Earphone

Abstract

The utility model relates to the technical field of earphones, in particular to an earphone. The earphone comprises a shell, a battery, a battery support, a loudspeaker, a loudspeaker support, a main control circuit board, a noise reduction microphone and a flexible circuit board. The shell is provided with a sound outlet, and a sound cavity is formed in the shell; the flexible circuit board comprises a first in-ear detection area and a second in-ear detection area which are used for in-ear detection. The loudspeaker support is installed in the sound cavity and close to the sound outlet, and the loudspeaker is installed on the loudspeaker support and the shell. The battery bracket is mounted in a sound cavity on one side of the loudspeaker deviating from the loudspeaker bracket; the circuit board is arranged in the shell; the flexible circuit board is arranged in the sound cavity and is electrically connected with the main control circuit board. The first in-ear detection area is attached to the side face of the battery support, and the second in-ear detection area is attached to the side face, facing the sound outlet, of the loudspeaker support. The second in-ear detection area extends to form a first extension portion, the first extension portion extends to the side face, facing the loudspeaker, of the loudspeaker support, and the noise reduction microphone is electrically connected to the first extension portion.

Description

Technical Field

[0001] The utility model relates to the technical field of earphones, in particular to an earphone. Background Art

[0002] A Bluetooth earphone is a wireless earphone that wirelessly connects to various devices such as mobile phones, tablet computers, computers, etc. through Bluetooth technology to achieve audio transmission and call functions. The design styles of Bluetooth earphones are diverse, including in-ear, earplug, over-ear, etc., to meet the needs and preferences of different users.

[0003] At present, the existing Bluetooth earphones use an FPC to set an ear-in detection area to achieve ear-in detection of the earphones. However, due to the narrow sound cavity space of the Bluetooth earphones and the large number of parts in the sound cavity, the overall design needs to take into account many parts including FPC, speaker, connecting wires, etc. Under the condition of ensuring the miniaturization of the earphones and the stability and rationality of the assembly of each part, the design and assembly are difficult. Summary of the Utility Model

[0004] An embodiment of the utility model provides an earphone to solve the problem in the prior art that the overall design needs to take into account many parts including FPC, speaker, connecting wires, etc., and the design and assembly are difficult under the condition of ensuring the miniaturization of the earphones and the stability and rationality of the assembly of each part.

[0005] The utility model discloses an earphone, which includes a housing, a battery, a battery bracket, a speaker, a speaker bracket, a main control circuit board, a noise reduction microphone and a flexible circuit board; an sound outlet is formed on the housing, and a sound cavity is formed inside the housing; the flexible circuit board includes a first ear-in detection area and a second ear-in detection area for ear-in detection;

[0006] The speaker bracket is installed in the sound cavity near the sound outlet, and the speaker is installed on the speaker bracket and the housing; the battery bracket is installed in the sound cavity on the side of the speaker away from the speaker bracket; the circuit board is installed inside the housing; the flexible circuit board is arranged in the sound cavity and electrically connected to the main control circuit board;

[0007] The first ear-in detection area is attached to the side surface of the battery bracket, and the second ear-in detection area is attached to the side surface of the speaker bracket facing the sound outlet; the second ear-in detection area extends out a first extension part, and the first extension part extends to the side surface of the speaker bracket facing the speaker, and the noise reduction microphone is electrically connected to the first extension part to be installed on the side surface of the speaker bracket facing the speaker.

[0008] Optionally, the earphone further includes a transfer circuit board, the transfer circuit board is located in the sound cavity on the side of the battery away from the battery bracket and is electrically connected and installed on the flexible circuit board; the first ear-in detection area extends out a second extension part, the second extension part is electrically connected to the transfer circuit board, and the transfer circuit board is electrically connected to the main control circuit board.

[0009] Optionally, the flexible circuit board includes a third extension portion that is electrically connected to the adapter circuit board and the main control circuit board respectively.

[0010] Optionally, the flexible circuit board includes a fourth extension portion that is electrically connected to the speaker and the adapter circuit board respectively.

[0011] Optionally, the flexible circuit board includes a support portion, and the fourth extension portion extends to the speaker through the support portion and is electrically connected to the speaker; the support portion is attached to one side of the speaker close to the battery holder.

[0012] Optionally, a first wire groove extending in the directions of the adapter circuit board and the speaker is formed on the side surface of the battery holder, and the fourth extension portion extends to the speaker through the first wire groove.

[0013] Optionally, a fifth extension portion extends from the support portion, and the fifth extension portion is connected to the second in-ear detection area.

[0014] Optionally, a guiding support block is provided at the edge of the speaker holder, and the fifth extension portion is connected to the second in-ear detection area through the guiding support block.

[0015] Optionally, a front pressure relief hole is provided at the housing. The speaker holder, the speaker and the housing are hermetically connected to form a front cavity on one side of the sound outlet, and the front cavity communicates with the front pressure relief hole.

[0016] Optionally, the battery holder, the speaker and the housing are hermetically connected to form a rear cavity in some areas of the sound cavity.

[0017] Compared with the prior art, the beneficial effect of the earphones provided by the embodiments of the utility model is that: the earphones of the utility model are equipped with a battery, a battery holder, a speaker, a speaker holder, a main control circuit board, a noise reduction microphone and a flexible circuit board in the sound cavity, wherein, considering the stability and rationality of the overall parts assembly in the sound cavity and the miniaturization of the earphones, a speaker holder is arranged near the sound outlet, and a special speaker holder is cooperated with the shell to provide a stable installation for the speaker, and the speaker can be reasonably placed near the sound outlet, and at the same time, a battery holder is arranged in the sound cavity on the side of the speaker away from the speaker holder, so as to rationally utilize the sound cavity space, and the battery is installed on a special battery holder, which is stably installed. That is, the overall installation coordination and spatial layout of the battery, battery holder, speaker, speaker holder and shell ensure the stability of speaker and battery installation, and at the same time, rationally utilize the space, ensure the performance of the corresponding parts while facilitating miniaturization, and on this basis, further attach the first in-ear detection area and the second in-ear detection area of ​​the flexible circuit board to the side of the battery holder and the side of the speaker holder facing the sound outlet, respectively, and the first extension portion extends to the side of the speaker holder facing the speaker to realize the electrical connection of the noise reduction microphone and install it on the side of the speaker holder facing the speaker, and use the speaker holder and battery holder to provide installation positions for the flexible circuit board and the noise reduction microphone, and at the same time, realize the stable assembly of the flexible circuit board and the noise reduction microphone and the reasonable layout, and reduce the complexity of the structure. Therefore, the assembly of the various parts of the earphone of the utility model is stable and reasonable, which is conducive to the miniaturization of the earphone and reduces the difficulty of design and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The technical solution of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0019] Figure 1 is a schematic diagram of an earphone according to an embodiment of the utility model;

[0020] Figure 2 is a cross-sectional view of an earphone according to an embodiment of the utility model;

[0021] Figure 3 It is an exploded schematic diagram of the earphone of the embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of a flexible circuit board and a speaker bracket according to an embodiment of the utility model;

[0023] Figure 5 is another schematic diagram of a flexible circuit board and a speaker bracket according to an embodiment of the utility model;

[0024] Figure 6 It is a schematic diagram of a flexible circuit board, a battery, a battery bracket, a speaker and a speaker bracket of an embodiment of the utility model;

[0025] Figure 7It is a cross-sectional view of the earphone according to another embodiment of the present utility model;

[0026] Figure 8 It is Figure 7 a schematic diagram of part A in

[0027] Figure 9 a schematic diagram of the horn bracket according to the embodiment of the present utility model;

[0028] Figure 10 a schematic diagram of the battery bracket according to the embodiment of the present utility model;

[0029] Figure 11 a schematic diagram of the flexible circuit board, battery, battery bracket, horn and horn bracket according to another embodiment of the present utility model;

[0030] Figure 12 a schematic diagram of the battery bracket according to another embodiment of the present utility model;

[0031] Figure 13 another schematic diagram of the battery bracket according to another embodiment of the present utility model;

[0032] Figure 14 another exploded schematic diagram of the earphone according to the embodiment of the present utility model;

[0033] Figure 15 It is Figure 14 a schematic diagram of part B in

[0034] Figure 16 a schematic diagram of the carrier sheet mounted on the rear shell according to the embodiment of the present utility model;

[0035] Figure 17 an exploded schematic diagram of the carrier sheet and the rear shell according to the embodiment of the present utility model.

[0036] The reference numerals in the figure are as follows:

[0037] 1. Shell; 11. Sound cavity; 111. Front cavity; 112. Rear cavity; 12. Rear shell; 121. Limiting column; 122. Limiting rib; 123. First rib; 13. Front shell; 131. Sound outlet; 132. Mounting opening; 133. Second supporting edge; 1331. Second step surface; 14. Middle shell; 141. Rear pressure relief hole; 142. Limiting groove; 2. Battery holder; 21. Raised frame edge; 211. Hole channel; 212. Recessed area; 22. Sound guide tube; 23. Connecting seat; 231. Connecting channel; 24. First wiring groove; 3. Main control circuit board; 31. Antenna pin; 311. Antenna signal pin; 312. Antenna ground pin; 32. Microphone; 33. Connecting pin; 4. Load sheet; 41, touch area; 42, limit hole; 43, first avoidance gap; 44, second avoidance gap; 45, third avoidance gap; 5, speaker bracket; 51, first through port; 52, mounting protrusion; 521, front pressure relief hole; 53, first through hole; 54, guide support block; 55, guide groove; 56, first support edge; 561, first step surface; 57, mounting column; 6, noise reduction microphone; 7, flexible circuit board; 71, first in-ear detection area; 72, second in-ear detection area; 73, first extension part; 74, second extension part; 75, third extension part; 76, fourth extension part; 77, support part; 78, fifth extension part; 8, battery; 9, speaker; 10, adapter circuit board; 20, mesh cloth. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.

[0039] The utility model embodiment provides a headset, such as Figures 1 to 5 As shown, the earphone includes a shell 1, a battery 8, a battery holder 2, a speaker 9, a speaker holder 5, a main control circuit board 3, a noise reduction microphone 6 and a flexible circuit board 7; a sound outlet 131 is opened on the shell 1, and a sound cavity 11 is formed in the shell 1; the flexible circuit board 7 includes a first in-ear detection area 71 and a second in-ear detection area 72 for in-ear detection.

[0040] The speaker bracket 5 is installed in the sound cavity 11 near the sound outlet 131, and the speaker 9 is installed on the speaker bracket 5 and the housing 1. The battery bracket 2 is installed in the sound cavity 11 on the side of the speaker 9 away from the speaker bracket 5; the circuit board is installed in the housing 1. The flexible circuit board 7 is arranged in the sound cavity 11 and is electrically connected to the main control circuit board 3.

[0041] The first in-ear detection area 71 is attached to the side of the battery holder 2, and the second in-ear detection area 72 is attached to the side of the speaker holder 5 facing the sound outlet 131. The second in-ear detection area 72 extends a first extension portion 73, and the first extension portion 73 extends to a side surface of the speaker holder 5 facing the speaker 9. The noise reduction microphone 6 is electrically connected to the first extension portion 73 to be installed on a side surface of the speaker holder 5 facing the speaker 9.

[0042] The earphone of the utility model is provided with a battery 8, a battery holder 2, a speaker 9, a speaker holder 5, a main control circuit board 3, a noise reduction microphone 6 and a flexible circuit board 7 in the sound cavity 11. Among them, considering the stability and rationality of the assembly of the overall parts in the sound cavity 11 and the miniaturization of the earphone, the speaker holder 5 is provided near the sound outlet 131, and the speaker 9 is provided with a stable installation through the cooperation of the special speaker holder 5 and the shell 1, and the speaker 9 can be reasonably placed near the sound outlet 131. At the same time, the battery holder 2 is provided in the sound cavity 11 on the side of the speaker 9 away from the speaker holder 5, so as to reasonably utilize the space of the sound cavity 11, and the battery 8 is installed on the special battery holder 2, and the installation is stable. That is, the overall installation and spatial arrangement of the battery 8, the battery holder 2, the speaker 9, the speaker holder 5 and the housing 1 ensure the stability of the installation of the speaker 9 and the battery 8, and at the same time, the space is reasonably used to ensure the performance of the corresponding parts while facilitating miniaturization. On this basis, the first in-ear detection area 71 and the second in-ear detection area 72 of the flexible circuit board 7 are further attached to the side of the battery holder 2 and the side of the speaker holder 5 facing the sound outlet 131, respectively. The first extension part 73 extends to the side of the speaker holder 5 facing the speaker 9 to realize the electrical connection of the noise reduction microphone 6 and to install it on the side of the speaker holder 5 facing the speaker 9. The speaker holder 5 and the battery holder 2 provide installation positions for the flexible circuit board 7 and the noise reduction microphone 6, and at the same time, the flexible circuit board 7 and the noise reduction microphone 6 are stably assembled and the layout is reasonable, reducing the complexity of the structure. Therefore, the assembly of the various parts of the earphone of the utility model is stable and reasonable, which is conducive to the miniaturization of the earphone and reduces the difficulty of design and assembly.

[0043] Specifically, with reference to the sound outlet 131, the first ear-in detection area 71 is on one side of the sound cavity 11, and the second ear-in detection area 72 is on the other side of the sound cavity 11. In this solution, the earphone can ensure the accuracy of ear-in detection through the two ear-in detections of the first ear-in detection area 71 and the second ear-in detection area 72, avoiding the error of ear-in detection of the earphone caused by accidental touch. The earphone uses the first ear-in detection area 71 and the second ear-in detection area 72 to detect and judge whether the earphone is in the ear. For example, when it is detected that the earphone is in the ear, the audio playback can be controlled, and when it is detected that the earphone is taken out of the ear canal, the pause of the audio playback can be controlled. Specifically, in one of its alternative embodiments, the first ear-in detection area 71 and the second ear-in detection area 72 can be provided with capacitive sensors, and the capacitance change between the earphone and the user's skin is detected by the capacitive sensors to judge whether the earphone is worn, so as to realize the ear-in detection and judgment of the earphone. Of course, in other embodiments, the first ear-in detection area 71 and the second ear-in detection area 72 can be provided with optical sensors, pressure sensors, etc. to realize the ear-in detection and judgment of the earphone. The optical sensor uses the principle of light emission and reception, and judges whether the earphone is in the wearing state by detecting whether the optical signal is blocked. The pressure sensor identifies the wearing state by detecting the pressure change of the earphone on the ear. Of course, different adaptability designs of the earphone structure may be required when using different sensors for detection. For example, the optical sensor needs to open small holes at the corresponding positions of the housing 1. Since these sensors are all conventional parts, their specific applications adopt conventional technologies and will not be elaborated here. The above noise reduction microphone 6 can be a feed-back (FB) noise reduction silicon microphone. In earphone design, the feed-back noise cancelling technology is an active noise reduction technology used to reduce the impact of external environmental noise on the audio experience. The environmental noise is captured by the noise reduction microphone 6, and the internal audio processor of the earphone generates a reverse sound wave to eliminate or reduce the propagation of the environmental noise. The silicon microphone is a microphone made of silicon material, which has the characteristics of high sensitivity, low noise and good stability. The silicon microphone can be used in the earphone to capture the environmental noise to support the realization of the feed-back noise reduction technology.

[0044] The flexible circuit board 7, also known as the flexible printed circuit (FPC), is a flexible circuit board composed of a flexible substrate (usually a polyester film or a polyamide film) and a conductive circuit. The flexible circuit board 7 can be folded and bent, and can better adapt to complex internal structures and space limitations, so as to achieve a more flexible and compact layout.

[0045] Further, in combination with Figure 6As shown, the earphone further includes an adapter circuit board 10, which is located in the sound cavity 11 on the side of the battery 8 away from the battery holder 2 and is electrically connected to the flexible circuit board 7. The first ear detection area 71 extends out a second extension 74, and the second extension 74 is electrically connected to the adapter circuit board 10, and the adapter circuit board 10 is electrically connected to the main control circuit board 3, that is, the flexible circuit board 7 is electrically connected to the main control circuit board 3 through the adapter circuit board 10. The connection between the flexible circuit board 7 and the main control circuit board 3 is realized through the setting of the adapter circuit board 10, which is convenient for connection and can further improve the installation convenience and firmness of the flexible circuit board 7. For example, the positive and negative electrodes of the battery 8 can be connected to the adapter circuit board 10. The adapter circuit board 10 is a rigid circuit board, which can be installed on the rear shell 12 of the housing 1 so that it is located in the sound cavity 11 on the side of the battery 8 away from the battery holder 2. Specifically, an FB ambient noise reduction microphone is also provided on the adapter circuit board 10. The FB ambient noise reduction microphone is a microphone that combines a feedback mechanism and an ambient noise reduction function. In an earphone, this type of microphone is usually used to capture the noise signals in the surrounding environment and transmit them to the processor of the device for processing. It is a conventional technical application and will not be elaborated here.

[0046] More specifically, as Figure 3 shown, the housing 1 further includes a rear shell 12, a front shell 13, and a middle shell 14. The front shell 13 and the middle shell 14 are assembled together, for example, by glue bonding, to form the above-mentioned sound cavity 11. The rear shell 12 is assembled on the side of the middle shell 14 away from the front shell 13, for example, by glue bonding. The front shell 13 and the middle shell 14 are the parts of the earphone inserted into the ear canal, and the sound outlet 131 is opened on the front shell 13. The speaker 9 and the speaker holder 5 are both installed in the front shell 13, for example, by glue bonding. The battery 8, the battery holder 2, and the adapter circuit board 10 are all installed in the middle shell 14, for example, by glue bonding. The main control circuit board 3 is installed at the position where the middle shell 14 is assembled with the rear shell 12.

[0047] The flexible circuit board 7 includes a third extension portion 75, and the third extension portion 75 is electrically connected to the adapter circuit board 10 and the main control circuit board 3 respectively. The adapter circuit board 10 is connected through the third extension portion 75 of the flexible circuit board 7, which is convenient for layout and installation. The flexible circuit board 7 includes a fourth extension portion 76, and the fourth extension portion 76 is electrically connected to the speaker 9 and the adapter circuit board 10 respectively. The flexible circuit board 7 realizes the electrical connection between the adapter circuit board 10 and the speaker 9 by providing the fourth extension portion 76, and the fourth extension portion 76 is connected to the positive and negative electrodes of the speaker 9 respectively. Further, the flexible circuit board 7 includes a support portion 77, and the fourth extension portion 76 extends to the speaker 9 through the support portion 77 and is electrically connected to the speaker 9; the support portion 77 is attached to one side of the speaker 9 close to the battery holder 2. The setting of the support portion 77 facilitates the installation and fixation at the fourth extension portion 76, and ensures the regular fixation of the flexible circuit board 7 introduced between the speaker 9 and the battery holder 2. The support portion 77 can be attached and fixed to one side of the speaker 9 close to the battery holder 2 by glue. Specifically, a first wire groove 24 extending in the direction of the adapter circuit board 10 and the speaker 9 is formed on the side surface of the battery holder 2, and the fourth extension portion 76 extends to the speaker 9 through the first wire groove 24. The first wire groove 24 facilitates the wiring of the fourth extension portion 76, improves the utilization rate of the space inside the earphone at the same time, and can also play a role in limiting the fourth extension portion 76.

[0048] Further, a fifth extension portion 78 extends from the support portion 77, and the fifth extension portion 78 is connected to the second ear detection area 72, which further improves the overall connection rationality of the flexible circuit board 7 and further utilizes the support portion 77.

[0049] Combined Figure 7 and Figure 8 As shown, there is a front pressure relief hole 521 at the housing 1. The speaker bracket 5, the speaker 9, and the front shell 13 are hermetically connected on one side of the sound outlet 131 to form a front cavity 111, and the front cavity 111 is communicated with the front pressure relief hole 521. The speaker 9, the speaker bracket 5 and the housing 1 are hermetically connected together to form the front cavity 111. In this way, while ensuring the normal function of the front pressure relief hole 521, the space of the front cavity 111 is relatively small, which can save the remaining space of the sound cavity 11. The remaining space can be used to assemble other accessories, which is beneficial to the further miniaturization of the earphone. The front pressure relief hole 521 is used to balance the pressure inside and outside the sound cavity 11 and ensure the sound quality of the earphone. Specifically, when the speaker 9 and the speaker bracket 5 are installed on the front shell 13, the front cavity 111 is formed on the front shell 13 and communicated with the sound outlet 131. There is a front pressure relief hole 521 at the front shell 13, and the front pressure relief hole 521 is communicated with the front cavity 111.

[0050] Further, the battery holder 2, the speaker 9 and the housing 1 are hermetically connected to form a rear cavity 112 in a partial area of the sound cavity 11. By arranging the battery holder 2, the battery 8, the speaker 9 and the housing 1 to cooperate together to form an independent rear cavity 112, while ensuring the normal function of the rear pressure relief hole 141, the space of the rear cavity 112 is relatively small, which can save the remaining space of the sound cavity 11. The remaining space can be used to assemble other accessories, which is beneficial to the further miniaturization of the earphone. The rear pressure relief hole 141 is used to balance the pressure inside and outside the sound cavity 11 to ensure the sound quality of the earphone. Specifically, when the battery holder 2 and the battery 8 are installed on the middle shell 14, the rear cavity 112 is formed on the middle shell 14, and the rear pressure relief hole 141 is also opened on the middle shell 14 and communicated with the rear cavity 112.

[0051] Specifically, the gaps at the assembly positions of the battery holder 2, the speaker 9 and the middle shell 14 can be sealed with glue to achieve the hermetic connection of the assembly between the battery holder 2, the speaker 9 and the housing 1 and ensure the tightness of the rear cavity 112. Similarly, the gaps at the assembly positions of the speaker 9 with the front shell 13 and the speaker bracket 5 can also be sealed with glue to achieve the hermetic connection of the assembly between the speaker 9, the housing 1 and the speaker bracket 5 and ensure the tightness of the front cavity 111. The battery 8 powers the earphone and it is a rechargeable battery, which will not be elaborated here. The sound generated by the speaker 9 is transmitted out through the sound outlet 131.

[0052] Further combined with Figure 9 As shown, a guiding support block 54 is provided at the edge of the speaker bracket 5, and the fifth extension 78 is connected to the second ear detection area 72 through the guiding support block 54. The guiding support block 54 helps to guide the fifth extension 78 to the correct position, ensuring that the fifth extension 78 is correctly connected to the speaker bracket 5 and is in an appropriate position. Further, the edge of the speaker 9 is supported on the guiding support block 54, which can provide additional support and stability for the speaker 9, preventing the speaker 9 from loosening or being damaged due to vibration or movement during use. By supporting the edge of the speaker 9 on the guiding support block 54, the connection between the speaker 9 and the fifth extension 78 can also be ensured to be firm and reliable, avoiding performance problems caused by improper connection.

[0053] Specifically, an installation convex portion 52 embedded in the installation opening 132 of the front shell 13 is provided on the speaker bracket 5, and a front pressure relief hole 521 is opened on the installation convex portion 52, so that there is a front pressure relief hole 521 at the front shell 13.

[0054] Generally, a Bluetooth headset needs to be provided with a pressure relief hole on the housing 1 to keep the pressure inside and outside the headset balanced to ensure the sound quality. Since the pressure relief hole needs to communicate with the sound cavity 11 inside the headset, when it is opened on the housing 1, the layout of other internal components such as the speaker 9 needs to be considered to avoid blocking the pressure relief hole by these components. This imposes greater restrictions on the layout of other components inside the headset and the opening of the pressure relief hole, making it inconvenient for the design of the Bluetooth headset. In this solution, the speaker bracket 5 is installed on the front shell 13 of the headset. As one of the components inside the headset, the speaker bracket 5 provides an installation position for the speaker 9 to ensure that the speaker 9 is firmly installed in the correct position. Since the speaker bracket 5 is located in the front cavity 111, the present invention further opens a front pressure relief hole 521 on the mounting protrusion 52 of the speaker bracket 5, and at the same time opens a mounting opening 132 on the front shell 13, and installs the mounting protrusion 52 in the mounting opening 132. In this way, firstly, the speaker bracket 5 can be quickly, conveniently and firmly assembled on the front shell 13; secondly, by arranging the front pressure relief hole 521 on the mounting protrusion 52, the front cavity 111 is connected to the outside, and there is no need to open a pressure relief hole on the front shell 13. And since the speaker bracket 5 itself is located in the front cavity 111 to support and install the speaker 9, there is no need to consider the problem that the front pressure relief hole 521 will be blocked; thirdly, as one of the components inside the housing 1, the speaker bracket 5 not only plays its own role but also solves the problem of the arrangement of the pressure relief hole. When arranging other components such as the speaker 9, the battery 8 and the battery bracket 2, it can be more flexible. Therefore, the headset of the present invention can avoid internal components from blocking the pressure relief hole, and at the same time, the layout of internal components and the opening of the pressure relief hole are relatively flexible, which is convenient for the design of the headset.

[0055] Furthermore, since the speaker bracket 5 itself is located in the front cavity 111, as long as the front pressure relief hole 521 is opened on the mounting protrusion 52, the front cavity 111 can be connected to the outside to ensure the pressure balance inside and outside the headset. There are no major requirements for the design of the mounting protrusion 52 and the mounting opening 132 on the front shell 13, and there will be no interference or influence on the layout or use of other components. Therefore, the design of the mounting protrusion 52 and the mounting opening 132 is relatively free, which can ensure the overall design freedom of the headset.

[0056] Further, two front pressure relief holes 521 are opened on the mounting protrusion 52. In this solution, two front pressure relief holes 521 are opened on the mounting protrusion 52. Without affecting the layout of other components during the opening of the two front pressure relief holes 521, the front cavity 111 has a dual-tuning hole structure, which can improve the mid-frequency and high-frequency effects of the sound and bring an excellent user experience.

[0057] Such as Figure 6As shown, a first through-hole 51 is formed in the speaker bracket 5, and the first through-hole 51 is arranged corresponding to the sound outlet 131. In this solution, the first through-hole 51 is further formed in the speaker bracket 5, and the first through-hole 51 can ensure the connection between the front cavity 111 and the sound outlet 131, avoiding the blocking of the sound outlet 131 by the speaker bracket 5. Specifically, the opening size of the first through-hole 51 can be slightly smaller than that of the sound outlet 131. A mesh cover can be further arranged at the sound outlet 131 to block the first through-hole 51 and the speaker bracket 5. The shape of the first through-hole 51 can be set as required and is not specifically limited here.

[0058] As Figures 6 to 8 shown, beside the first through-hole 51, a first through-hole 53 is formed in the speaker bracket 5, and the noise reduction microphone 6 is installed on the speaker bracket 5 at the first through-hole 53, and the first through-hole 53 is located at the sound outlet 131. In this solution, the first through-hole 53 is formed in the speaker bracket 5 and is arranged at the sound outlet 131, facilitating the sound collection of the noise reduction microphone 6. Specifically, installing the noise reduction microphone 6 at a position close to the sound outlet 131 can more effectively capture the audio signal for noise reduction processing. This position can more accurately capture the sound signal for noise reduction processing when the user is speaking or listening to sound, helping to reduce interference and improve the accuracy of sound collection, and minimizing the noise impact from the external environment as much as possible, thereby improving the noise reduction effect.

[0059] Installation posts 57 are arranged on both sides of the first through-hole 53, and the first extension 73 is installed on the two installation posts 57. By arranging the installation posts 57 on both sides of the first through-hole 53, the first extension 73 can be stably installed inside the earphone, providing good support and protection, thus effectively preventing the first extension 73 from being damaged due to accidental collision or vibration during use. The noise reduction microphone 6 is electrically connected and installed on the first extension 73, and the first extension 73 is fixed by the installation posts 57. This design can ensure the stable and reliable connection between the noise reduction microphone 6 and the first extension 73, avoiding functional problems caused by poor connection. And by using the installation posts 57 to fix the first extension 73 in position, the assembly process can be made more simple and efficient. The installation posts 57 help to ensure the correct position of the first extension 73 and also contribute to subsequent maintenance and repair.

[0060] Further, on the side of the speaker bracket 5 facing the front cavity 111, a guiding groove 55 extending from the edge to the mounting post 57 is provided. The flexible circuit board 7 is led to the noise reduction microphone 6 through the guiding groove 55 and electrically connected to the noise reduction microphone 6. The provision of the guiding groove 55 can help accurately position the first extension portion 73 to ensure its connection to the noise reduction microphone 6 at a specific position, contributing to improving the accuracy and stability of the connection. Through the setting of the guiding groove 55, the first extension portion 73 can also be effectively protected from accidental damage or excessive bending, thereby extending its service life and improving the reliability of the earphone, and also facilitating the assembly between the speaker bracket 5 and the first extension portion 73.

[0061] On the opposite side of the guiding support block 54, the edge of the speaker bracket 5 is provided with a first support edge 56. The inner side surface of the first support edge 56 is provided with a first stepped surface 561. The edge of the speaker 9 is supported on the first stepped surface 561. The edge of the speaker 9 being supported on the first stepped surface 561 can provide stable support to ensure that the speaker 9 can be correctly aligned and maintain a stable connection during installation, avoiding problems caused by loosening or displacement. Through the design of the first stepped surface 561, the edge of the speaker bracket 5 can be more easily aligned with the first support edge 56 to ensure the correct positioning of the speaker 9. Correspondingly, a second support edge 133 is provided inside the front shell 13. The side surface of the second support edge 133 is provided with a second stepped surface 1331. The second support edge 133, the second stepped surface 1331, the first support edge 56, and the first stepped surface 561 jointly support and limit the speaker 9, and the speaker 9 can be further adhesively bonded with glue.

[0062] Further combined Figure 10 As shown, for the setting of the side of the battery bracket 2 corresponding to the rear pressure relief hole 141, in one embodiment, specifically, as Figure 2 and Figure 5As shown in the figure, a raised frame edge 21 is provided on the side of the battery holder 2 corresponding to the rear pressure relief hole 141. A hole passage 211 communicating the rear pressure relief hole 141 and the rear cavity 112 is formed on the part of the raised frame edge 21 extending towards the rear cavity 112. The raised frame edge 21 can facilitate the arrangement of a mesh 20 between the rear pressure relief hole 141 and the battery holder 2, and further forming the hole passage 211 on the part of the raised frame edge 21 extending towards the rear cavity 112 can ensure the communication between the rear pressure relief hole 141 and the rear cavity 112. Further, a recessed area 212 is provided on the part of the raised frame edge 21 corresponding to the side of the battery holder 2. The arrangement of the recessed area 212 can further increase the gap between the raised frame edge 21 and the rear pressure relief hole 141, improving the communication degree between the rear cavity 112 and the outside. In addition, considering the installation and space utilization of the internal components such as the speaker 9, the battery 8 and the battery holder 2 in the sound cavity 11, on the premise of ensuring the installation and layout of these components, especially the battery holder 2, the hole passage 211 is provided on the raised frame edge 21 to ensure the communication between the rear pressure relief hole 141 and the rear cavity 112, so as to ensure the normal function of the rear pressure relief hole 141 while reducing the requirement for the design space, avoiding space waste, facilitating miniaturization and improving the wearing comfort.

[0063] Regarding the setting of the side of the battery holder 2 corresponding to the rear pressure relief hole 141, in another embodiment, as Figures 11 to 13 shown, a sound guide tube 22 is provided on the battery holder 2 corresponding to the rear pressure relief hole 141. The sound guide tube 22 is docked with the rear pressure relief hole 141, and the sound guide tube 22 communicates the rear pressure relief hole 141 into the rear cavity 112. When the sound guide tube 22 is provided on the battery holder 2 corresponding to the rear pressure relief hole 141 and the battery holder 2 is installed, the sound guide tube 22 is docked with the rear pressure relief hole 141, and the sound guide tube 22 communicates the rear pressure relief hole 141 into the sound cavity 11. In this way, when the middle shell 14 and the front shell 13 are adhesively bonded and installed, even if the glue overflows, due to the blocking of the battery holder 2 and the sound guide tube 22, the glue is not easily flowed to the rear pressure relief hole 141 to block the rear pressure relief hole 141, improving the convenience of assembly. In addition, since the rear pressure relief hole 141 is communicated into the sound cavity 11 through the sound guide tube 22, when arranging other components, the concern about the rear pressure relief hole 141 being blocked can be reduced, facilitating the arrangement of the components in the sound cavity 11 and reducing the difficulty of the internal layout of the earphone.

[0064] Further, a communication seat 23 is provided on the battery bracket 2. A through communication channel 231 is provided on the communication seat 23. The sound guide tube 22 is installed at one end of the communication channel 231 away from the rear pressure relief hole 141. The sound guide tube 22 is connected and communicated with the rear pressure relief hole 141 through the communication channel 231. By providing the communication seat 23 and the through communication channel 231, the sound guide tube 22 can be stably installed on the communication channel 231, which is convenient for the sound guide tube 22 to be connected and communicated with the rear pressure relief hole 141, helps to ensure the connection stability between the sound guide tube 22 and the rear pressure relief hole 141, and ensures the effective connection of the rear pressure relief hole 141, thereby maintaining the sound quality and sound effect of the earphone. A convex frame edge 21 is also provided on the outer side surface of the communication seat 23. The convex frame edge 21 surrounds the communication channel 231 to form a concave area 212. The communication channel 231 is located in the concave area 212. In this solution, the convex frame edge 21 surrounds the communication channel 231 to form the concave area 212, which can increase the gap at one end of the communication channel 231 close to the rear pressure relief hole 141, increase the alignment area with the rear pressure relief hole 141, and make it easy for the communication channel 231 to be aligned and communicated with the rear pressure relief hole 141. Specifically, the convex frame edge 21 can be rectangular or in other shapes, which is not specifically limited herein.

[0065] On the other hand, an antenna needs to be provided inside the Bluetooth earphone for wireless transmission of audio signals. Currently, the antenna is generally integrated on the circuit board. The antenna design is affected by the circuit board, with low design freedom and great design difficulty.

[0066] In the present utility model, as Figures 14 to 17 shown, the earphone further includes a carrier sheet 4. The carrier sheet 4 is installed between the main control circuit board 3 and the rear shell 12. Antenna pins 31 are provided on the main control circuit board 3. An antenna is provided on the carrier sheet 4. The antenna has antenna contacts corresponding to the antenna pins 31. The antenna contacts are abutted against the antenna pins 31. In the earphone of the present utility model, the carrier sheet 4 is provided between the rear shell 12 and the middle shell 14, so that the carrier sheet 4 is between the main control circuit board 3 and the rear shell 12. Antenna pins 31 are provided on the main control circuit board 3, and an antenna is provided on the carrier sheet 4. The antenna has antenna contacts corresponding to the antenna pins 31. After the rear shell 12 is covered on the middle shell 14, while the installation of the carrier sheet 4 is completed, the antenna contacts are abutted against the antenna pins 31, thereby completing the connection between the antenna and the antenna pins 31. Since the antenna is provided on the carrier sheet 4, the carrier sheet 4 provides an independent design space for the antenna and is not attached to the main control circuit board 3 and affected by the main control circuit board 3. Therefore, the design freedom is high and the antenna design difficulty is reduced.

[0067] Moreover, since the antenna is disposed on the carrier sheet 4, the carrier sheet 4 is non-integrally connected to the antenna pins 31 through antenna contacts. The carrier sheet 4 and the main control circuit board 3 are detachably connected. During assembly, after the carrier sheet 4 and the main control circuit board 3 are respectively installed, the rear case 12 can be covered onto the middle case 14, and thus the installation and connection of the antenna can be completed while installing the rear case 12, which is convenient for assembly and subsequent disassembly.

[0068] Specifically, on the Bluetooth headset, the antenna is responsible for wirelessly transmitting the audio signal in the Bluetooth headset to a paired device, such as a smart phone, a tablet computer or other audio sources. In addition to transmitting signals, the antenna can also be responsible for receiving signals from the paired device to ensure two-way communication of the audio stream. The technical solution of the present utility model is particularly applicable to earphones integrating true wireless stereo technology and active noise reduction function (TWS+ANC dual-feed noise reduction earphones). The middle case 14 and the rear case 12 can be further bonded by glue, and the main control circuit board 3 can be installed in the middle case 14 by screws, limit studs, etc.

[0069] The antenna pins 31 include an antenna signal pin 311 and an antenna ground pin 312, and two antenna contacts are provided corresponding to the antenna signal pin 311 and the antenna ground pin 312. The antenna signal pin 311 is the part for transmitting or receiving wireless signals. In the antenna system of the earphone, the antenna signal pin 311 transmits audio signals or other data signals for communication with other devices, carrying the signal transmission function from the earphone to an external device (such as a smart phone or other audio sources). The antenna ground pin 312 is used to form a complete circuit loop to ensure the correct transmission and reception of signals. In the earphone antenna system, the antenna ground pin 312 provides a reference point and a return path for the circuit to ensure that the signal can smoothly complete the loop. The antenna ground pin 312 also helps to reduce interference and noise in the circuit and improve the anti-interference ability of the whole system. The antenna signal pin 311 and the antenna ground pin 312 together constitute the signal transmission and loop closing parts in the antenna system. The antenna signal pin 311 is responsible for signal transmission and reception, while the antenna ground pin 312 ensures the correct flow and stability of the signal in the circuit. Both of them jointly ensure the normal operation of the antenna system and the effectiveness of signal transmission. In this solution, two antenna contacts are provided on the antenna to achieve connection with the antenna signal pin 311 and the antenna ground pin 312.

[0070] Specifically, the antenna signal pin 311 and the antenna ground pin 312 are elastic pins. During the connection process, due to their elastic force, the elastic pins can provide a firm contact, ensuring the stability and quality of signal transmission and reducing problems caused by poor contact. Moreover, when the elastic pins elastically press against the carrier sheet 4, they can also play a role in tightly fixing the carrier sheet 4. Specifically, the elastic pins are metal elastic pins. The metal elastic pins have good electrical conductivity, can effectively transmit signals, and reduce the resistance during signal transmission, thereby improving the stability and reliability of signal transmission.

[0071] The carrier sheet 4 is an FPC. FPC (Flexible Printed Circuit) is flexible, can adapt to the design requirements of various shapes and sizes, is lightweight, does not add too much weight, and can be bent and folded according to design needs to adapt to complex mechanical structure designs. Applied to this solution, it can be designed and installed between the rear shell 12 and the middle shell 14 more easily. Specifically, the shape of the FPC can adapt to the shape of the rear shell 12.

[0072] Furthermore, a touch control area 41 for touching the earphone is also provided on the carrier sheet 4, and connection pins 33 are provided on the main control circuit board 3 corresponding to the electrical connection contacts of the touch control area 41; the electrical connection contacts of the touch control area 41 abut against the connection pins 33. The setting of the touch control area 41 enables users to control the earphone through touch operations, improving the convenience and intuitiveness of operation and enhancing the user experience. Integrating the touch control area 41 on the carrier sheet 4 can save space and make more efficient use of the internal space of the earphone, which is beneficial for a more compact design. The connection pins 33, as the electrical connection points on the main control circuit board 3 corresponding to the touch control area 41, play a role in connecting the electrical connection contacts of the touch control area 41 on the carrier sheet 4, realizing the electrical connection between the touch control area 41 and the main control circuit board 3, ensuring the transmission quality and stability of the touch control signal, and thus guaranteeing the accuracy and reliability of the touch control function. Specifically, when in use, users can control the earphone by touching at the position of the rear shell 12 corresponding to the touch control area 41. For example, a single click is for play / pause switching, answering a call (left earphone), hanging up a call (right earphone), a double click is for switching to the previous track (left earphone), switching to the next track (right earphone), a triple click is for waking up the voice assistant of the mobile phone (left earphone), switching to the game mode (right earphone), and a long press for a certain number of seconds is for rejecting an incoming call. Of course, different touch control methods can also be designed according to actual control needs, which will not be elaborated here. Specifically, the touch control area 41 can be provided with a capacitive touch sensor to realize the touch control function of the touch control area 41.

[0073] In an alternative embodiment, the touch area 41 is located at one end of the carrier 4, and the antenna contacts are located at the other end of the carrier 4. By arranging the touch area 41 and the antenna contacts at the two ends of the carrier 4 respectively, the space of the carrier 4 can be maximally utilized to ensure the layout of different functional modules within the limited space of the carrier 4. Separating the layout of the touch area 41 and the antenna contacts can also reduce the risk of electromagnetic interference between them, reduce the interference between the two, especially the interference to the antenna, and improve the stability and reliability of the overall headphone system.

[0074] As Figure 2 , Figure 4 and Figure 5 shown, limiting posts 121 are provided on the inner wall surface of the rear shell 12, and limiting holes 42 are provided on the carrier 4. The carrier 4 is mounted on the limiting posts 121 through the limiting holes 42. Through the design of the limiting posts 121 and the limiting holes 42, accurate positioning can be achieved, the position of the carrier 4 can be fixed during the assembly process, the correct alignment of the carrier 4 and its cooperation with the main control circuit board 3 can be ensured, and unnecessary movement or shaking of the carrier 4 during use can be effectively prevented, ensuring the structural stability of the headphones. Specifically, two limiting holes 42 are arranged at intervals along the length direction of the carrier 4, and the limiting posts 121 are correspondingly arranged.

[0075] The housing 1 further includes a front shell 13, and the front shell 13 and the middle shell 14 are fitted and installed; a microphone 32 is provided at one end of the main control circuit board 3 away from the front shell 13, and a first avoidance notch 43 is provided on the carrier 4 corresponding to the microphone 32 at the end away from the front shell 13. The setting of the first avoidance notch 43 can function to avoid the microphone 32 by the carrier 4 and prevent the carrier 4 from pressing on the microphone 32 when the assembly may not be in place. The microphone 32 (Microphone) is a component on the headphones for receiving sound.

[0076] In an alternative embodiment, a limiting rib 122 is provided at one end of the rear shell 12 close to the front shell 13, a limiting groove 142 is provided on the middle shell 14 corresponding to the limiting rib 122, and the limiting rib 122 is embedded in the limiting groove 142; a second avoidance notch 44 is provided on the carrier 4 corresponding to the limiting rib 122 at the end close to the front shell 13. In this solution, through the design of the limiting rib 122 and the limiting groove 142, accurate alignment between the rear shell 12 and the middle shell 14 can be achieved, ensuring the correct position of the rear shell 12 and the middle shell 14 during the assembly process and simplifying the assembly process. The design of the limiting rib 122 and the limiting groove 142 can also increase the connection strength between the rear shell 12 and the middle shell 14, improve the stability of the overall structure of the product, and reduce problems caused by looseness. The second avoidance notch 44 corresponding to the limiting rib 122 can ensure the convenient installation of the carrier 4.

[0077] In an optional embodiment, a first rib 123 is provided on the inner wall surface along the edge of one end of the rear shell 12 close to the front shell 13, and a third avoidance notch 45 is provided on the carrier sheet 4 corresponding to the first rib 123 at one end close to the front shell 13. The second avoidance notch 44 can ensure the convenient installation of the carrier sheet 4.

[0078] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. For those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some of the technical features can be equivalently replaced; and all such modifications and replacements should fall within the protection scope of the appended claims of the present invention.

Claims

1. A headset, characterized in that: It includes a housing, a battery, a battery holder, a speaker, a speaker holder, a main control circuit board, a noise reduction microphone and a flexible circuit board; the housing is provided with a sound outlet, and a sound cavity is formed inside the housing; the flexible circuit board includes a first in-ear detection area and a second in-ear detection area for in-ear detection; The speaker bracket is installed in the sound cavity near the sound outlet, and the speaker is installed on the speaker bracket and the shell; the battery bracket is installed in the sound cavity on the side of the speaker away from the speaker bracket; the circuit board is installed in the shell; the flexible circuit board is arranged in the sound cavity and is electrically connected to the main control circuit board; The first in-ear detection area is attached to the side of the battery holder, and the second in-ear detection area is attached to the side of the speaker holder facing the sound outlet; the second in-ear detection area extends a first extension portion, and the first extension portion extends to the side of the speaker holder facing the speaker, and the noise reduction microphone is electrically connected to the first extension portion to be installed on the side of the speaker holder facing the speaker.

2. The earphone according to claim 1, characterized in that The earphone further comprises a transfer circuit board, which is located in the sound cavity on a side of the battery away from the battery holder and is electrically connected and mounted on the flexible circuit board; A second extension portion extends from the first in-ear detection area, the second extension portion is electrically connected to the adapter circuit board, and the adapter circuit board is electrically connected to the main control circuit board.

3. The earphone according to claim 2, characterized in that The flexible circuit board includes a third extending portion, and the third extending portion is electrically connected to the adapter circuit board and the main control circuit board respectively.

4. The earphone according to claim 2, characterized in that The flexible circuit board includes a fourth extending portion, and the fourth extending portion is electrically connected to the speaker and the adapter circuit board respectively.

5. The earphone according to claim 4, characterized in that: The flexible circuit board includes a supporting portion, and the fourth extending portion extends to the speaker through the supporting portion and is electrically connected to the speaker; the supporting portion is attached to a side of the speaker close to the battery bracket.

6. The earphone according to claim 4, characterized in that A first wiring groove extending toward the adapter circuit board and the speaker is formed on the side surface of the battery bracket, and the fourth extension portion extends to the speaker through the first wiring groove.

7. The earphone according to claim 5, characterized in that A fifth extension portion extends from the support portion, and the fifth extension portion is connected to the second in-ear detection area.

8. The earphone according to claim 7, characterized in that: A guide support block is disposed on the edge of the speaker bracket, and the fifth extension portion is connected to the second in-ear detection area through the guide support block.

9. The earphone according to any one of claims 1 to 8, characterized in that: The shell is provided with a front pressure relief hole, and the speaker bracket, the speaker and the shell are sealed and connected at one side of the sound outlet to form a front cavity, and the front cavity is communicated with the front pressure relief hole.

10. The earphone according to claim 9, characterized in that The battery holder, the speaker and the housing are sealed and connected to form a rear cavity in a partial area of ​​the sound cavity.

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