Bluetooth earphone and communication equipment

Abstract

The embodiment of the utility model relates to the technical field of earphones, and discloses a Bluetooth earphone and communication equipment, the Bluetooth earphone comprises a shell, a loudspeaker, a circuit board, a Bluetooth antenna and a Bluetooth chip, and the shell is provided with an accommodating cavity; the loudspeaker is arranged in the accommodating cavity; the circuit board is arranged in the accommodating cavity, and the circuit board is provided with a feeding point; the Bluetooth antenna is arranged on the circuit board, and the Bluetooth antenna is connected with the feeding point; the Bluetooth chip is arranged on the circuit board, and the Bluetooth chip is electrically connected with the Bluetooth antenna and the loudspeaker. Through the above mode, the embodiment of the utility model can overcome the limitation of the traditional design, avoid the influence of glue on the structural parameters of the Bluetooth antenna, and improve the performance, consistency and reliability of the product.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of earphones, and in particular, to a Bluetooth earphone and a communication device. Background Art

[0002] Earphones can generally be divided into wired earphones and wireless earphones. Since wired earphones are inconvenient to wear, wireless earphones are favored by more and more users. Among them, there are True Wireless Stereo (TWS) earphones, simply referred to as TWS earphones. TWS earphones are devices that transmit stereo signals based on Bluetooth technology. That is, without any wire connection, the left earphone and the right earphone receive stereo signals from playback devices such as mobile phones through Bluetooth technology to achieve playback. Bluetooth earphones generally include a Bluetooth antenna, a circuit board, a Bluetooth chip, a speaker, and a plastic housing. The Bluetooth antenna, the circuit board, the Bluetooth chip, and the speaker are installed in the plastic housing. The Bluetooth chips are all arranged on the circuit board, and the Bluetooth chips are respectively connected to the Bluetooth antenna and the speaker.

[0003] During the implementation of the embodiments of the present application, the inventors found that: the Bluetooth antenna of a Bluetooth earphone is usually adhered to the housing with glue. When the Bluetooth antenna is fixed to the housing with glue, the glue will change the structural parameters of the Bluetooth antenna, thereby affecting the resonance frequency of the antenna, resulting in unstable antenna performance and affecting the user experience. Summary of the Utility Model

[0004] The main technical problem to be solved by the embodiments of the present application is to provide a Bluetooth earphone. By arranging the Bluetooth antenna on the circuit board in the accommodating cavity, and the Bluetooth chip is electrically connected to the Bluetooth antenna and the speaker respectively, it can overcome the limitations of the traditional design, avoid the influence of glue on the structural parameters of the Bluetooth antenna, and improve the performance, consistency, and reliability of the product.

[0005] To solve the above technical problem, one technical solution adopted by the embodiments of the present application is: to provide a Bluetooth earphone, including a housing, a speaker, a circuit board, a Bluetooth antenna, and a Bluetooth chip. The housing is provided with an accommodating cavity; the speaker is arranged in the accommodating cavity; the circuit board is arranged in the accommodating cavity, and the circuit board is provided with a feeding point; the Bluetooth antenna is arranged on the circuit board, and the Bluetooth antenna is connected to the feeding point; the Bluetooth chip is arranged on the circuit board, and the Bluetooth chip is electrically connected to the Bluetooth antenna and the speaker respectively.

[0006] Optionally, the Bluetooth antenna includes a first communication antenna, a feeding part, and a second communication antenna. The first communication antenna is connected to the second communication antenna through the feeding part, and the second communication antenna is connected to the feeding point.

[0007] Optionally, the first communication antenna includes a first radiation branch, a second radiation branch, and a third radiation branch. The first radiation branch is connected to the third radiation branch through the second radiation branch, and the third radiation branch is connected to the feeding part. The first radiation branch and the third radiation branch are arranged in parallel.

[0008] Optionally, the second communication antenna includes a fourth radiation branch, a first connection part, a first rectangular radiation part, a second connection part, and a second rectangular radiation part. The first rectangular radiation part is connected to the second rectangular radiation part through the second connection part. The fourth radiation branch is connected to the first rectangular radiation part through the first connection part and the first rectangular radiation part, and the fourth radiation branch is arranged in parallel with the first rectangular radiation part and the second rectangular radiation part.

[0009] Optionally, the circuit board is provided with a clearance area, and the Bluetooth antenna is disposed in the clearance area.

[0010] Optionally, the area of the Bluetooth antenna is 9.4mm x 1.45mm.

[0011] Optionally, the housing includes a main body part and an earplug part. The main body part is provided with a first cavity, and the earplug part is provided with a second cavity. The first cavity and the second cavity communicate to form the accommodating cavity. The speaker is located in the second cavity, and the circuit board, the Bluetooth antenna, and the Bluetooth chip are all disposed in the first cavity.

[0012] Optionally, the main body part is provided with a groove. One side wall of the groove is provided with a limiting post, and the other side wall of the groove is provided with an elastic limiting block. The shape of the elastic limiting block is a right triangle. The first right side of the elastic limiting block is fixed to the other side wall of the groove. The second right side of the elastic limiting block is parallel to the bottom of the groove. The plane where the hypotenuse of the elastic limiting block is located constitutes a guiding plane. The guiding plane is used to guide the circuit board to be clamped into the gap between the second right side and the bottom of the groove. The elastic limiting block abuts against one side of the surface of the circuit board facing away from the bottom of the groove, and the limiting post abuts against the other side of the surface of the circuit board facing away from the bottom of the groove.

[0013] Optionally, the Bluetooth headset further includes a thimble, a battery, and a charging module. The battery and the charging module are both disposed in the first cavity, and the charging module is disposed on the circuit board. The charging module is connected to the thimble. The main body part is further provided with an opening communicating with the first cavity. One end of the thimble is connected to the charging module, and the other end of the thimble extends out of the housing through the opening.

[0014] To solve the above technical problems, another technical solution adopted in the embodiments of the present application is: to provide a communication device, including any one of the above Bluetooth headsets.

[0015] An embodiment of the present application provides a Bluetooth headset, which includes a housing, a speaker, a circuit board, a Bluetooth antenna, and a Bluetooth chip. The housing is provided with a receiving cavity; the speaker is disposed in the receiving cavity; the circuit board is disposed in the receiving cavity, and the circuit board is provided with a feeding point; the Bluetooth antenna is disposed on the circuit board, and the Bluetooth antenna is connected to the feeding point; the Bluetooth chip is disposed on the circuit board, and the Bluetooth chip is electrically connected to the Bluetooth antenna and the speaker respectively. By disposing the Bluetooth antenna on the circuit board in the receiving cavity and electrically connecting the Bluetooth chip to the Bluetooth antenna and the speaker respectively, the limitations of the traditional design can be overcome, the influence of glue on the structural parameters of the Bluetooth antenna can be avoided, and the performance, consistency, and reliability of the product can be improved. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally denoted by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 is a schematic diagram of the Bluetooth headset according to the embodiment of the present application;

[0018] Figure 2 is another schematic diagram of the Bluetooth headset according to the embodiment of the present application;

[0019] Figure 3 is a schematic diagram of the circuit board according to the embodiment of the present application;

[0020] Figure 4 is the simulation result of the head analog echo loss of the Bluetooth antenna according to the embodiment of the present application;

[0021] Figure 5 is a schematic diagram of the Bluetooth antenna according to the embodiment of the present application;

[0022] Figure 6 is a graph of the simulation result of the head analog efficiency of the Bluetooth antenna according to the embodiment of the present application.

[0023] The reference numerals in the specific embodiments are as follows: 100, Bluetooth headset; 10, housing; 101, accommodation cavity; 102, main body part; 103, earplug part; 131, second cavity; 20, speaker; 30, circuit board; 302, clearance area; 40, Bluetooth antenna; 401, first communication antenna; 402, feeding part; 403, second communication antenna; 411, first radiation branch; 412, second radiation branch; 413, third radiation branch; 431, fourth radiation branch; 432, first connection part; 433, first rectangular radiation part; 434, second connection part; 435, second rectangular radiation part; 60, ejector pin. Specific embodiments

[0024] To facilitate the understanding of the present application, the following further describes the present application in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application are only for the purpose of describing specific embodiments and are not used to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0026] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0027] Please refer to Figure 1The embodiment of the present application provides a Bluetooth headset 100, which includes a shell 10, a speaker 20, a circuit board 30, a Bluetooth antenna 40 and a Bluetooth chip (not shown in the figure). The shell 10 is provided with a accommodating cavity 101; the speaker 20 is arranged in the accommodating cavity 101, and is used to convert an electrical signal into a sound signal, so as to play audio. The circuit board 30 is arranged in the accommodating cavity 101, and the circuit board 30 is provided with a feeding point (not shown in the figure); the Bluetooth antenna 40 is arranged on the circuit board 30, and the Bluetooth antenna 40 is connected to the feeding point (not shown in the figure), which is a connection point for providing electric energy for the Bluetooth antenna 40. The Bluetooth chip (not shown in the figure) is arranged on the circuit board 30, and the Bluetooth chip (not shown in the figure) is electrically connected to the Bluetooth antenna 40 and the speaker 20 respectively. The Bluetooth antenna 40 is used to receive and send Bluetooth signals to realize the wireless communication function of the Bluetooth headset 100. The Bluetooth antenna 40 is disposed on the circuit board 30 and connected to a feeding point (not shown) to ensure its normal operation and avoid the influence of glue on the structural parameters of the Bluetooth antenna 40, thereby improving the performance, consistency and reliability of the product.

[0028] For details, please refer to Figure 2 The housing 10 includes a main body 102 and an earplug 103. The main body 102 is provided with a first cavity (not shown), and the earplug 103 is provided with a second cavity 131. The first cavity (not shown) and the second cavity 131 are connected to form the accommodating cavity 101. The speaker 20 is located in the second cavity. The circuit board 30, the Bluetooth antenna 40 and the Bluetooth chip (not shown) are all arranged in the first cavity (not shown). The speaker 20 is located in the second cavity 131 to ensure that the audio can be directly transmitted to the user's ears. The circuit board 30, the Bluetooth antenna 40 and the Bluetooth chip (not shown) are all arranged in the first cavity (not shown) for circuit connection and signal transmission. The Bluetooth antenna 40 is connected to the feeding point (not shown) of the circuit board 30 to ensure that the Bluetooth antenna 40 can obtain a stable power supply. The Bluetooth chip (not shown) is electrically connected to the Bluetooth antenna 40 and the speaker 20 respectively to control Bluetooth communication and audio playback.

[0029] See also Figure 2 The circuit board 30 is provided with a clearance area 302, and the Bluetooth antenna 40 is arranged in the clearance area 302. The clearance area 302 refers to a specific area on the circuit board 30 reserved for the Bluetooth antenna 40. There is no or minimal interference from other circuit elements in the clearance area 302 to ensure that the antenna can send and receive wireless signals without hindrance. By optimizing the position and size of the clearance area 302, the radiation efficiency, directivity and gain of the antenna can be improved, thereby improving the stability and distance of the communication of the Bluetooth antenna 40.

[0030] Please continue readingFigure 2 The main body 102 is provided with a groove (not shown in the figure), and the groove (not shown in the figure) provides a specific installation position for the circuit board 30, so that the circuit board 30 can be firmly installed inside the earphone. Furthermore, a side wall of the groove (not shown in the figure) is provided with a limiting column (not shown in the figure), and the limiting column can limit the horizontal movement of the circuit board 30 in the groove (not shown in the figure) to ensure that the circuit board 30 does not slide out from the side. When the circuit board 30 is placed in the groove (not shown in the figure), the limiting column will abut against one side of the circuit board 30 to provide a physical barrier to prevent the circuit board 30 from moving in that direction. The other side wall of the groove (not shown) is provided with an elastic limit block (not shown), and the shape of the elastic limit block is a right triangle. The first right-angled side of the elastic limit block is fixed to the other side wall of the groove (not shown), ensuring the stability of the elastic limit block. The second right-angled side of the elastic limit block is parallel to the bottom of the groove (not shown), and the plane where the hypotenuse of the elastic limit block is located constitutes a guiding plane. The guiding plane is used to guide the circuit board 30 to fit into the gap between the second right-angled side and the bottom of the groove (not shown). When the circuit board 30 is placed in the groove (not shown), the edge of the circuit board 30 will be tightly attached to the second right-angled side to form a stable support, and the guiding plane is on the circuit board When the circuit board 30 is put into the groove (not shown), it plays a guiding role, helping the circuit board 30 to smoothly fit into the gap between the second right-angled side and the bottom of the groove (not shown); the elastic limit block abuts against the side of the surface of the circuit board 30 away from the bottom of the groove (not shown), and the limit column abuts against the other side of the surface of the circuit board 30 away from the bottom of the groove (not shown). The groove (not shown) provides a specific installation position for the circuit board 30, so that the circuit board 30 can be stably installed inside the earphone. When the circuit board 30 is fully inserted, the hypotenuse of the elastic limit block will return to its original position and abut against the side of the surface of the circuit board 30 away from the bottom of the groove (not shown). In the above manner, the circuit board 30 is stably fixed in the groove (not shown), and will neither move up and down nor shake left and right. When installing the circuit board 30, the user only needs to align one end of the circuit board 30 with the opening of the groove (not shown) and push it in along the guide plane. As the circuit board 30 goes deeper, the elastic stopper will be temporarily compressed until the edge of the circuit board 30 is completely inserted into the gap between the second right-angled side and the bottom of the groove (not shown). At this time, the elastic stopper will restore its original shape and abut against the circuit board 30. At the same time, the stopper column will also abut against the other side of the circuit board 30, forming a double fixation. By designing a groove (not shown) in the main body 102 of the Bluetooth headset 100, a stopper column and an elastic stopper block are set in the groove (not shown) to fix and stabilize the circuit board 30.

[0031] See alsoFigure 3 and Figure 4 The Bluetooth antenna 40 includes a first communication antenna 401, a feeding part 402, and a second communication antenna 403. The first communication antenna 401 is connected to the second communication antenna 403 through the feeding part 402, and the second communication antenna 403 is connected to the feeding point (not shown in the figure). The first communication antenna 401 and the second communication antenna can improve the communication range and stability of the Bluetooth headset 100. These two antennas can work together to cover a wider communication area, reduce signal blind spots. By connecting the two communication antennas together through the feeding part 402, it can ensure efficient signal transmission between the two antennas, reduce signal loss and interference. Figure 4 It is the simulation result of the human head analog echo loss of the Bluetooth antenna 40. Echo loss represents the matching degree of the antenna system, and the smaller its value, the better the matching. Figure 4 The results in [[ ]] show that the echo loss of the Bluetooth antenna 40 is less than -13.9 dB, indicating that the antenna has a good matching effect above the human head.

[0032] Specifically, please refer to [[ ]] Figure 5 and Figure 6 The first communication antenna 401 includes a first radiation branch 411, a second radiation branch 412, and a third radiation branch 413. The first radiation branch 411 is connected to the third radiation branch 413 through the second radiation branch 412, and the third radiation branch 413 is connected to the feeding part 402. The first radiation branch 411 and the third radiation branch 413 are arranged in parallel, which can enhance the directivity and gain of the Bluetooth antenna 40. The parallel radiation branches can form a certain phase difference, which helps to concentrate the radiation energy in a specific direction, improving the communication distance and stability. The second communication antenna 403 includes a fourth radiation branch 431, a first connection part 432, a first rectangular radiation part 433, a second connection part 434, and a second rectangular radiation part 435. The first rectangular radiation part 433 is connected to the second rectangular radiation part 435 through the second connection part 434. The fourth radiation branch 431 is connected to the first rectangular radiation part 433 through the first connection part 432, and the fourth radiation branch 431 is arranged in parallel with the first rectangular radiation part 433 and the second rectangular radiation part 435, further enhancing the directivity and gain of the Bluetooth antenna 40. The parallel radiation branches can form a certain phase difference, which helps to concentrate the radiation energy in a specific direction, improving the communication distance and stability. Figure 6This is a simulation result graph of the efficiency of the Bluetooth antenna 40 for a human head model. The graph shows the simulation results of the efficiency of the Bluetooth antenna 40 at different frequencies, presented in the form of a curve graph. The X-axis in the curve graph represents the frequency range, while the Y-axis represents the efficiency value. It can be seen from the graph that in the frequency band range of 2400 - 2500 MHz, the efficiency value of the antenna is greater than -11.8 dB, and the Bluetooth antenna 40 can achieve a relatively high efficiency in the frequency band range of 2400 - 2500 MHz.

[0033] In some embodiments, the area of the Bluetooth antenna 40 is 9.4 mm x 1.45 mm.

[0034] Please refer back Figure 1 , the Bluetooth headset 100 further includes a thimble 60, a battery, and a charging module. The battery and the charging module are both disposed in the first cavity (not shown in the figure), and the charging module is disposed on the circuit board 30. The charging module is connected to the thimble 60. The main body portion 102 is further provided with an opening (not shown in the figure) communicating with the first cavity (not shown in the figure). One end of the thimble 60 is connected to the charging module, and the other end of the thimble 60 extends out of the housing 10 from the opening. The thimble 60 is a component in the Bluetooth headset 100 used for physical contact with an external charging device (such as a charger or a charging stand). One end of it is connected to the charging module to ensure that electrical energy can be transmitted from the external device to the charging module. The other end of the thimble 60 extends out of the opening of the headset housing 10, enabling the user to place the headset on a charger or a charging stand to achieve charging through the thimble 60.

[0035] An embodiment of the present application provides a Bluetooth headset 100, including a housing 10, a speaker 20, a circuit board 30, a Bluetooth antenna 40, and a Bluetooth chip (not shown in the figure). The housing 10 is provided with a receiving cavity 101; the speaker 20 is disposed in the receiving cavity 101; the circuit board 30 is disposed in the receiving cavity 101, and the circuit board 30 is provided with a feeding point (not shown in the figure); the Bluetooth antenna 40 is disposed on the circuit board 30, and the Bluetooth antenna 40 is connected to the feeding point (not shown in the figure); the Bluetooth chip (not shown in the figure) is disposed on the circuit board 30, and the Bluetooth chip (not shown in the figure) is electrically connected to the Bluetooth antenna 40 and the speaker 20 respectively. By disposing the Bluetooth antenna 40 on the circuit board 30 in the receiving cavity 101 and electrically connecting the Bluetooth chip (not shown in the figure) to the Bluetooth antenna 40 and the speaker 20 respectively, the limitations of the traditional design can be overcome, the influence of glue on the structural parameters of the Bluetooth antenna 40 can be avoided, and the performance, consistency, and reliability of the product can be improved.

[0036] The present application further provides an embodiment of a communication device. The communication device includes the above-mentioned Bluetooth headset 100. For the specific structure and function of the Bluetooth headset 100, reference can be made to the above embodiments, and details are not described herein again.

[0037] The above are only embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A Bluetooth headset, characterized in that, Comprising: A housing provided with a receiving cavity; A speaker disposed in the receiving cavity; A circuit board disposed in the receiving cavity, the circuit board being provided with a feeding point; A Bluetooth antenna disposed on the circuit board, and the Bluetooth antenna is connected to the feeding point; A Bluetooth chip disposed on the circuit board, the Bluetooth chip being electrically connected to the Bluetooth antenna and the speaker respectively. Wherein, the Bluetooth antenna includes a first communication antenna, a feeding portion and a second communication antenna, the first communication antenna is connected to the second communication antenna through the feeding portion, and the second communication antenna is connected to the feeding point; The first communication antenna includes a first radiation branch, a second radiation branch and a third radiation branch, the first radiation branch is connected to the third radiation branch through the second radiation branch, and the third radiation branch is connected to the feeding portion, the first radiation branch and the third radiation branch are arranged in parallel; the circuit board is provided with a clearance area, and the Bluetooth antenna is disposed in the clearance area.

2. The Bluetooth headset according to claim 1, wherein The second communication antenna includes a fourth radiation branch, a first connecting portion, a first rectangular radiation portion, a second connecting portion and a second rectangular radiation portion, the first rectangular radiation portion is connected to the second rectangular radiation portion through the second connecting portion, the fourth radiation branch is connected to the first rectangular radiation portion through the first connecting portion, and the fourth radiation branch is arranged in parallel with the first rectangular radiation portion and the second rectangular radiation portion.

3. The Bluetooth headset according to claim 1, wherein, The area of the Bluetooth antenna is 9.4mm x 1.45mm.

4. The Bluetooth headset according to any one of claims 1-3, characterized in that, The housing includes a main body portion and an earplug portion, the main body portion is provided with a first cavity, the earplug portion is provided with a second cavity, the first cavity and the second cavity communicate to form the receiving cavity, the speaker is located in the second cavity, the circuit board and the Bluetooth antenna are disposed in the first cavity, and the Bluetooth chip is disposed in the first cavity.

5. The Bluetooth headset according to claim 4, wherein The main body portion is provided with a groove, one side wall of the groove is provided with a limiting post, the other side wall of the groove is provided with an elastic limiting block, the shape of the elastic limiting block is a right triangle, the first right-angled side of the elastic limiting block is fixed to the other side wall of the groove, the second right-angled side of the elastic limiting block is parallel to the bottom of the groove, the plane where the hypotenuse of the elastic limiting block is located constitutes a guiding plane, the guiding plane is used to guide the circuit board to be clamped into the gap between the second right-angled side and the bottom of the groove, the elastic limiting block abuts against one side of the surface of the circuit board facing away from the bottom of the groove, and the limiting post abuts against the other side of the surface of the circuit board facing away from the bottom of the groove.

6. The Bluetooth headset according to claim 5, characterized in that, The Bluetooth headset further includes a thimble, a battery and a charging module, the battery and the charging module are both disposed in the first cavity, and the charging module is disposed on the circuit board, the charging module is connected to the thimble, the main body portion is further provided with an opening communicating with the first cavity, one end of the thimble is connected to the charging module, and the other end of the thimble extends out of the housing through the opening.

7. A communication device, characterized in that, Including the Bluetooth headset according to any one of claims 1-6.

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