Open type earphone

Abstract

The embodiment of the utility model provides an open type earphone, and relates to the technical field of earphones, a sound outlet hole is formed in a sound production part shell, a machine core is arranged in the sound production part shell, a first loudspeaker on the machine core corresponds to the sound outlet hole, the first loudspeaker serves as an audio loudspeaker, an audio signal can be transmitted to the ear of a user through the sound outlet hole, and the user experience is improved. The second loudspeaker is arranged on the side, deviating from the sound outlet hole, of the first loudspeaker and is spaced from the first loudspeaker, so that the first loudspeaker and the second loudspeaker form a tandem double-loudspeaker structure, interference between the first loudspeaker and the second loudspeaker can be effectively reduced, and the definition and the quality of audio output are guaranteed; the second loudspeaker and the first loudspeaker jointly construct the rear sound cavity of the first loudspeaker, and the second loudspeaker can detect the environmental noise in real time and generate reverse sound waves to offset the environmental noise, so that the noise reduction performance of the open type earphone is further optimized, and the sound quality performance is remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field of earphones, and in particular to an open earphone. Background Art

[0002] With the rapid development of science and technology and the improvement of people's quality of life, headphones, as a commonly used audio device, are constantly enriching and improving their functions and performance, especially in terms of wearing comfort, users have higher and higher requirements for headphones.

[0003] In the related art, in order to improve wearing comfort, the earphones are designed as open-type earphones. The open-type earphones convert the audio signals into air vibrations and transmit them directly to the user's ears. There is no need to insert the earplugs into the ear canal to close the entire ear canal like insert earphones.

[0004] However, open-back headphones generally have a single-speaker structure and are not sealed between the open-back headphones and the ear canal. When transmitting sound to the user's ears, external noise can easily penetrate into the user's ears and interfere with the audio the user is listening to, resulting in poor noise reduction performance. Utility Model Content

[0005] The present application provides an open-type earphone, which can solve the problem of poor noise reduction performance of the open-type earphone.

[0006] An embodiment of the present application provides an open-type earphone, which includes a sound-emitting shell and a movement, the sound-emitting shell is provided with a sound outlet, the movement is arranged in the sound-emitting shell, and the movement includes a first speaker and a second speaker, the first speaker is arranged corresponding to the sound outlet, the second speaker is arranged on the side of the first speaker away from the sound outlet, and the second speaker is spaced apart from the first speaker and together constitutes a rear sound cavity of the first speaker.

[0007] Optionally, in some embodiments, the first speaker and the second speaker are arranged to face the same direction.

[0008] Optionally, in some embodiments, the distance between the axis of the first speaker and the axis of the second speaker ranges from greater than or equal to 0 mm to less than or equal to 5 mm.

[0009] Optionally, in some embodiments, along the axial direction of the first speaker, the distance between the first speaker and the second speaker ranges from greater than or equal to 0.01 mm to less than or equal to 5 mm.

[0010] Optionally, in some embodiments, the movement further includes a bracket, which is disposed between the first speaker and the second speaker, and is used to at least support the second speaker, and together with the first speaker and the second speaker, form the rear sound cavity.

[0011] Optionally, in some embodiments, the bracket includes a hard bracket, which is used to support at least the second speaker, and together with the first speaker and the second speaker, the rear sound cavity is constructed, the hard bracket is provided with a sound guide hole connected to the rear sound cavity, and the sound guide hole is arranged opposite to the acoustic hole on the sound-emitting part shell; and a soft part, which is arranged at one end of the sound guide hole facing the acoustic hole, and the soft part is provided with a connecting hole, the sound guide hole, the connecting hole and the acoustic hole are connected in sequence, and the soft part is used to seal the sound guide hole and the acoustic hole.

[0012] Optionally, in some embodiments, the soft part includes an extension part and a sealing part, the extension part is inserted into the sound guide hole to form the connecting hole, the sealing part is connected to the extension part and is located between the hard bracket and the inner side wall of the sound-emitting part shell, and the sealing part is arranged around the circumference of the connecting hole.

[0013] Optionally, in some embodiments, a convex rib is provided on the sealing portion, the convex rib is pressed on the inner wall of the sound-emitting portion shell, and the convex rib is arranged around the circumference of the acoustic hole.

[0014] Optionally, in some embodiments, a glue filling groove is provided on the inner side wall of the sound-emitting part shell, the glue filling groove is arranged around the circumference of the first speaker, and glue is provided in the glue filling groove to bond the first speaker to the sound-emitting part shell.

[0015] Optionally, in some embodiments, the movement further includes a circuit board and a bracket, the circuit board is mounted on the bracket, and the circuit board and the second speaker are located on the same side of the bracket.

[0016] Optionally, in some embodiments, the circuit board includes a main control board and a sub-control board electrically connected to the main control board, the main control board is mounted on the bracket and layered with the sub-control board, and the main control board and the sub-control board are at least partially overlapped.

[0017] Optionally, in some embodiments, the plane where the main control board is located is parallel to the plane where the sub-control board is located in space; or, the plane where the main control board is located is intersecting with the plane where the sub-control board is located in space.

[0018] Optionally, in some embodiments, the main control board and the sub-control board are electrically connected via a flexible printed circuit board.

[0019] Optionally, in some embodiments, the flexible printed circuit board has a redundant section, and the redundant section is connected to the sub-control board.

[0020] Optionally, in some embodiments, the flexible printed circuit board is in a tensioned state when connecting the main control board and the sub-control board.

[0021] Optionally, in some embodiments, the movement further includes at least two sound receiving parts, each of the sound receiving parts is arranged corresponding to a sound receiving hole on the sound emitting part shell, one of the sound receiving parts is arranged adjacent to the sound output hole, and the other sound receiving part is arranged on the side opposite to the sound output hole, and the sound inlet holes of the two sound receiving parts are arranged in opposite directions.

[0022] Optionally, in some embodiments, at least one of the sound receiving parts includes two sound receiving channels that are connected to each other, and the two sound receiving channels are arranged at an angle.

[0023] The technical effect of an open-type earphone provided by an embodiment of the present application is as follows: by setting a sound outlet hole on the sound-emitting shell and setting the movement in the sound-emitting shell, the first speaker on the movement corresponds to the sound outlet hole, and the first speaker, as an audio speaker, can transmit the audio signal to the user's ear through the sound outlet hole, and the second speaker is set on the side of the first speaker away from the sound outlet hole, and is spaced apart from the first speaker, so that the first speaker and the second speaker form a series-type dual-speaker structure, which can effectively reduce the interference between the two and ensure the clarity and quality of the audio output, and the second speaker is a noise reduction speaker, the second speaker and the first speaker jointly construct the rear sound cavity of the first speaker, the second speaker can detect ambient noise in real time and generate reverse sound waves to offset the ambient noise, which helps to further optimize the noise reduction performance of the open-type earphone, thereby significantly improving the sound quality performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the structure of an open-type earphone in an embodiment of the present application;

[0026] Figure 2 A schematic cross-sectional structure diagram of an open-type earphone in one embodiment of the present application;

[0027] Figure 3A schematic diagram of the structure of an open-type headset at an upward viewing angle in one embodiment of the present application;

[0028] Figure 4 This is a schematic diagram of a structure in which a first speaker, a bracket and a second speaker are assembled together in one embodiment of the present application;

[0029] Figure 5 This is a schematic cross-sectional structure diagram of a first speaker, a bracket, and a second speaker assembled together in one embodiment of the present application;

[0030] Figure 6 This is a schematic diagram of the structure of a bracket in one embodiment of the present application;

[0031] Figure 7 This is a schematic diagram of the structure of the soft part in one embodiment of the present application;

[0032] Figure 8 This is a schematic diagram of the structure of a movement in an embodiment of the present application;

[0033] Fig. 9 This is a schematic diagram of the structure of a sound receiving unit in an embodiment of the present application;

[0034] Fig.10 It is a schematic diagram of the cross-sectional structure of a sound receiving part in an embodiment of the present application.

[0035] Description of Figure Numbers:

[0036] 100. Open-type headphones; 1. Sound-emitting housing; 11. Sound outlet; 12. Acoustic hole; 13. Glue-filling groove; 14. Sound receiving hole; 2. Movement; 21. First speaker; 22. Second speaker; 23. Bracket; 231. Hard bracket; 2311. Sound guide hole; 232. Soft part; 2321. Connecting hole; 2322. Insertion part; 2323. Sealing part; 24. Circuit board; 241. Main control board; 242. Sub-control board; 25. Sound receiving part; 251. Sound receiving channel; 3. Rear sound cavity; 4. Convex rib; 5. Flexible printed circuit board; 51. Redundant section. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] See also Figure 1-3 The embodiment of the present application provides an open-type earphone 100, which includes two core parts: a sound-emitting housing 1 and a movement 2.

[0039] Specifically, the sound-emitting shell 1, as the external structure of the open earphone 100, not only has a beautiful appearance, but also has a sound hole 11 on the side wall of the sound-emitting shell 1. Preferably, the sound hole 11 is a circular hole to ensure that the sound can be transmitted smoothly and evenly, and an ultrasonic mesh steel can be provided in the sound hole 11. The ultrasonic mesh steel can effectively prevent foreign matter from entering the sound hole to avoid interfering with the sound quality, and allow sound waves to pass smoothly to ensure the clarity and purity of the sound transmission.

[0040] The movement 2 bears the heavy task of sound output and is arranged inside the sound-emitting shell 1 and corresponds to the sound outlet 11. The movement 2 is integrated with a first speaker 21 and a second speaker 22, wherein the first speaker 21, as an audio speaker, can correspond to the sound outlet 11 and transmit the audio signal to the user's ear through the sound outlet 11, and the second speaker 22 is arranged on the side of the first speaker 21 away from the sound outlet 11 and is spaced apart from the first speaker 21, so that the first speaker 21 and the second speaker 22 form a series dual speaker structure, which can effectively reduce the interference between the two and ensure the clarity and quality of the audio output, and the second speaker 22 is not only an ordinary audio output device, but also a noise reduction speaker. The second speaker 22 and the first speaker 21 jointly construct the rear sound cavity 3 of the first speaker 21, and the second speaker 22 can detect ambient noise in real time and generate reverse sound waves to offset the ambient noise, which helps to further optimize the noise reduction performance of the open earphones 100, thereby significantly improving the sound quality performance.

[0041] See also Figure 2 In some embodiments, the first speaker 21 can be set in the same direction as the second speaker 22. When the first speaker 21 plays sound, the second speaker 22 can perform noise reduction at the same time, which can effectively reduce the noise from the same direction, so that the user can hear the audio content more clearly. The synergistic effect of the first speaker 21 and the second speaker 22 not only improves the sound quality, but also enhances the noise reduction effect, bringing a purer auditory experience to the user.

[0042] See also Figure 2 In some embodiments, the distance between the axis of the first speaker 21 and the axis of the second speaker 22 may range from greater than or equal to 0 mm to less than or equal to 5 mm.

[0043] Specifically, when the distance between the axis of the first speaker 21 and the axis of the second speaker 22 is 0 mm, the axis of the first speaker 21 and the axis of the second speaker 22 are coaxially arranged. Figure 2The Z-axis in the figure is the common axis of the first speaker 21 and the second speaker 22. Since the axes of the first speaker 21 and the second speaker 22 coincide with each other, the second speaker 22 can more accurately identify and eliminate the noise that conflicts with the first speaker 21, thereby improving the noise reduction effect and further improving the sound quality and listening experience.

[0044] When the distance between the axis of the first speaker 21 and the axis of the second speaker 22 is greater than 0 mm and less than 5 mm, the axis of the first speaker 21 can be set parallel to the axis of the second speaker 22. Since the distance between the axes of the first speaker 21 and the second speaker 22 is small, their sound waves can overlap and enhance each other during propagation, thereby improving the directivity and penetration of the sound. This enables users to feel clearer and vivid sound details when listening, and enhances the layering and three-dimensional sense of the sound.

[0045] See also Figure 2 In some embodiments, along the axial direction of the first speaker 21, the spacing range between the first speaker 21 and the second speaker 22 can be greater than or equal to 0.01 mm and less than or equal to 5 mm. Specifically, this spacing range ensures that the first speaker 21 and the second speaker 22 can fit closely together, and due to the extremely small spacing, the first speaker 21 and the second speaker 22 can work together almost seamlessly, which helps to reduce the loss and distortion of sound during the transmission process, making the sound quality purer and clearer.

[0046] See also Figure 4 and Figure 5 In some embodiments, the movement 2 may further include a bracket 23 , and the bracket 23 may be disposed between the first speaker 21 and the second speaker 22 .

[0047] Specifically, one end of the bracket 23 is arranged opposite to the first speaker 21, ensuring the precise alignment between the two, which not only makes the installation of the first speaker 21 more stable, but also ensures the efficiency and clarity of sound transmission. At the same time, the other end of the bracket 23 is used to support the second speaker 22, so that the first speaker 21, the bracket 23 and the second speaker 22 can be arranged in sequence along the same straight line, so that the first speaker 21, the bracket 23 and the second speaker 22 can form a series-connected dual speaker structure, which not only reduces the sound interference between the first speaker 21 and the second speaker 22, but also enhances the stability of the overall structure.

[0048] In addition, the function of the bracket 23 is not limited to support and fixation. The bracket 23 can also construct the rear sound cavity 3 of the first speaker 21 together with the first speaker 21 and the second speaker 22. The rear sound cavity 3 has a crucial impact on the sound quality. It can optimize the sound propagation path, reduce sound reflection and interference, and thus improve the sound quality. Through the close cooperation between the bracket 23 and the dual speakers, the construction of the rear sound cavity 3 is more reasonable and efficient, bringing a more excellent sound quality effect to the open earphone 100.

[0049] See also Figures 5 to 7 In some embodiments, the bracket 23 may include a hard bracket 231 and a soft part 232. The hard bracket 231, as the main structure of the bracket 23, plays a role in supporting the second speaker 22, and can effectively prevent the second speaker 22 from shifting or deforming during use, thereby ensuring the stability and durability of the sound quality. At the same time, the hard bracket 231 can also form a rear sound cavity 3 of the first speaker 21 together with the first speaker 21 and the second speaker 22. The rear sound cavity 3 can optimize the propagation path of the sound, reduce the reflection and interference of the sound, and make the sound quality purer and clearer.

[0050] It is worth mentioning that the hard bracket 231 is also provided with sound guide holes 2311 connected to the rear sound cavity 3. These sound guide holes 2311 can be arranged opposite to the acoustic holes 12 on the sound-emitting shell 1, so that the rear sound cavity 3 can be connected to the acoustic holes 12. The coordinated use of the sound guide holes 2311 and the acoustic holes 12 further enhances the sound propagation effect and makes the sound quality fuller and more three-dimensional.

[0051] Specifically, the acoustic hole 12 is usually a pressure relief hole or a tuning hole. When the acoustic hole 12 is used as a pressure relief hole, it can reduce the pressure in the ear canal and make the wearer feel more comfortable. If there is no pressure relief hole, the bass may be improved, but the pressure in the ear canal will increase, which may easily cause hearing fatigue. In addition, if the pressure relief hole is closed, the diaphragm may be slightly deformed during vibration, resulting in slight abnormal distortion of the sound.

[0052] When the acoustic hole 12 is used as a tuning hole, the ultra-high frequency phase characteristics can be adjusted, the high frequency diffusion can be improved and the high frequency standing waves can be eliminated, so that the sound diffusion is more uniform, and a tuning net and tuning cotton are usually attached to the inside of the tuning hole to more accurately adjust the sound. Without these structures, the sound may become turbid.

[0053] The soft part 232 is arranged at one end of the sound guide hole 2311 facing the acoustic hole 12, and a connecting hole 2321 is arranged inside the soft part 232 to ensure that the sound guide hole 2311, the connecting hole 2321 and the acoustic hole 12 can be smoothly connected in sequence, so that the sound can be transmitted unimpeded, ensuring the fluency and clarity of the sound quality. At the same time, the soft part 232 is made of a soft and elastic material, which can fit tightly between the sound guide hole 2311 and the acoustic hole 12 to form an effective sealing structure, which not only effectively prevents the intrusion of external noise, but also avoids the leakage of internal sound, thereby significantly improving the noise reduction performance of the earphone.

[0054] See also Figures 5 to 7 In some embodiments, the soft portion 232 may include an extending portion 2322 and a sealing portion 2323 , and one end of the extending portion 2322 is connected to the sealing portion 2323 .

[0055] Specifically, the extension portion 2322, as a part of the soft portion 232, can be inserted into the sound guide hole 2311, and the outer wall of the extension portion 2322 is tightly fitted with the inner wall forming the sound guide hole 2311, and the extension portion 2322 is formed with a connecting hole 2321, so that the connecting hole 2321 and the sound guide hole 2311 are connected, which not only ensures that the sound can pass smoothly, but also enhances the stability of the structure.

[0056] The sealing portion 2323 is located between the hard bracket 231 and the inner wall of the sound-emitting shell 1, and the sealing portion 2323 is arranged around the connecting hole 2321, which not only ensures that the connecting hole 2321 can effectively connect the sound guide hole 2311 and the acoustic hole 12 to form a complete sound propagation channel, but also through its soft and elastic material, the sound guide hole 2311 and the acoustic hole 12 are tightly sealed.

[0057] See also Figure 7 In some embodiments, a convex rib 4 may be provided on the side of the sealing portion 2323 facing the sound-emitting portion shell 1, and the convex rib 4 is squeezed on the inner wall of the sound-emitting portion shell 1. In this embodiment, the convex rib 4 is arranged around the circumference of the acoustic hole 12 and forms a square-like structure, which not only enhances the connection stability between the sealing portion 2323 and the sound-emitting portion shell 1, but also further improves the sealing effect.

[0058] See also Figure 2 In some embodiments, a glue filling groove 13 may be provided on the inner wall of the sound-emitting housing 1, and the glue filling groove 13 may be arranged around the first speaker 21, and the opening end of the glue filling groove 13 is also arranged toward the first speaker 21, so that the glue can be easily squeezed into the glue filling groove 13.

[0059] When the glue filling groove 13 is filled with glue, the glue can tightly bond the first speaker 21 to the sound-emitting housing 1. This bonding method not only enhances the stability of the first speaker 21 in the sound-emitting housing 1, but also prevents it from shifting or falling off during use. At the same time, the setting of the glue filling groove 13 also improves the sealing of the overall structure, effectively preventing the intrusion of external noise and the leakage of internal sound. This design not only improves the noise reduction performance of the earphone, but also makes the sound quality purer and clearer.

[0060] See also Figure 8 In some embodiments, the movement 2 may further include a circuit board 24 and a bracket 23. The circuit board 24 may be mounted on the bracket 23, and the circuit board 24 and the second speaker 22 may be located on the same side of the bracket 23, and the circuit board 24 and the first speaker 21 may be located on opposite sides of the bracket 23. By fixing the circuit board 24 on the bracket 23, the circuit board 24 may be effectively prevented from being displaced or damaged during use, thereby ensuring the normal operation of the open earphone 100.

[0061] In addition, the circuit board 24 and the second speaker 22 are located on the same side of the bracket 23, which makes the layout of the components more compact and reasonable, which not only improves the internal space utilization of the sound-emitting shell 1, but also makes it more convenient to connect the circuit board 24, the bracket 23, the first speaker 21 and the second speaker 22 together during the assembly process, thereby improving production efficiency.

[0062] See also Figure 8 In some embodiments, the circuit board 24 may also include a main control board 241 and a sub-control board 242. The main control board 241 can be electrically connected to the circuit board 24. The main control board 241 serves as the "brain" of the open earphone 100 and is responsible for processing various audio signals and control instructions to ensure the sound quality performance and functional stability. The sub-control board 242 may be a touch circuit board, an antenna circuit board, a charging board, etc. In this embodiment, the sub-control board 242 is a charging board responsible for providing a continuous power supply to the earphone to ensure that the earphone can work stably for a long time.

[0063] Specifically, the main control board 241 is assembled on the bracket 23, and is also layered with the sub-control board 242, and the main control board 241 and the sub-control board 242 are at least partially overlapped. To be more clear, the main control board 241 is located above the sub-control board 242, and the main control board 241 and the sub-control board 242 are arranged in parallel. Along a direction that is perpendicular to both the main control board 241 and the sub-control board 242, part of the main control board 241 is projected onto the sub-control board 242, which not only optimizes the internal space utilization and makes the circuit board 24 more compact, but also the overlapping arrangement is conducive to the dissipation of heat, thereby improving the durability and stability of the open earphones 100.

[0064] See also Figure 8 In some embodiments, the plane where the main control board 241 is located can be arranged parallel to the plane where the sub-control board 242 is located in space. When the main control board 241 and the sub-control board 242 are parallel, the electromagnetic field distribution between them is more uniform, reducing signal distortion or noise caused by electromagnetic field cross interference. This helps to improve the purity and stability of the audio signal.

[0065] It should be noted that the parallel arrangement of the main control board 241 and the sub-control board 242 does not mean that the two boards must be completely fitted or completely separated. In actual design, it is necessary to comprehensively consider factors such as the overall structure of the device, functional requirements, heat dissipation, and electromagnetic interference to determine the optimal board spacing and layout.

[0066] In some other embodiments, the plane where the main control board 241 is located can be arranged to intersect with the plane where the sub-control board 242 is located in space. By arranging the main control board 241 and the sub-control board 242 to intersect, limited space can be more effectively utilized, higher integration can be achieved, and it helps to save space.

[0067] See also Figure 8 In some embodiments, the main control board 241 and the sub-control board 242 are electrically connected via a flexible printed circuit board 5. The flexible printed circuit board 5, with its thin, bendable and foldable characteristics, can realize complex circuit connections in a limited space, thereby establishing a reliable electrical connection between the main control board 241 and the sub-control board 242, ensuring smooth transmission of audio signals and control commands.

[0068] See also Figure 8 In some embodiments, the flexible printed circuit board 5 has a redundant section 51 , and the redundant section 51 is connected to the sub-control board 242 .

[0069] In actual applications, the existence of the redundant segment 51 means that even if the flexible printed circuit board 5 is worn, broken or other abnormal conditions occur in a certain part, the sub-control board 242 can still maintain an electrical connection with the main control board 241 through the redundant segment 51, thereby enhancing the fault tolerance of the circuit and improving the durability and stability of the open earphones 100.

[0070] In addition, the redundant section 51 can also disperse stress. When the open earphone 100 is in use, the flexible printed circuit board 5 may be stretched or compressed due to various external forces. The design of the redundant section 51 can absorb these stresses and reduce the risk of damage to the circuit board 24 due to stress concentration. At the same time, the redundant section 51 also makes the layout and installation of the flexible printed circuit board 5 more flexible. The length and position of the redundant section 51 can be adjusted according to actual needs to adapt to different installation spaces and connection methods.

[0071] In some other embodiments, when the flexible printed circuit board 5 is connected to the main control board 241 and the sub-control board 242, the flexible printed circuit board 5 can be in a taut state, which can make the structure of the movement 2 more compact, reduce the overall volume of the movement 2, and improve the utilization of space; and the taut flexible printed circuit board 5 can connect the main control board 241 and the sub-control board 242 more securely, and can avoid noise or abnormal sound caused by vibration or impact.

[0072] See also Figure 8 In some embodiments, the movement 2 may further include at least two sound receiving parts 25 , which may be microphones, and each sound receiving part 25 may be arranged corresponding to a sound receiving hole 14 on the sound-emitting part housing 1 .

[0073] Specifically, the sound-emitting shell 1 is composed of a main shell and a cover body, and the cover body covers the main shell. A sound receiving hole 14 is respectively provided on the main shell and the cover body, and a sound outlet hole 11 is also provided on the main shell. The sound receiving hole 14 on the main shell is adjacent to the sound outlet hole 11, and the sound receiving hole 14 on the cover body is opposite to the sound outlet hole 11, so that one of the two sound receiving parts 25 is also adjacent to the sound outlet hole 11 and corresponds to the sound receiving hole 14 on the main shell, and the other of the two sound receiving parts 25 is opposite to the sound outlet hole 11 and corresponds to the sound receiving hole 14 on the cover body, so that the sound inlet holes of the two sound receiving parts 25 are arranged in opposite directions, so that the earphones can receive ambient sound more comprehensively, whether it is conversation in front or sound from the side, can be clearly captured, which can ensure that the open earphones 100 can more effectively capture sounds from different directions when worn.

[0074] Specifically, setting the sound inlet holes of the two sound receiving parts 25 in opposite directions can also help reduce sound interference and echo. To be more specific, when the sound inlet holes of the sound receiving parts 25 face the same direction, sounds from certain directions may cause interference due to reflection and superposition, affecting the sound receiving quality. Setting the sound inlet holes in opposite directions can effectively reduce such interference, making the recording purer and clearer. In addition, when the earphones are worn on the head, the two sound receiving parts 25 can be located on both sides of the user, and setting the sound inlet holes in opposite directions can better adapt to the head contour, reduce the sense of oppression, and improve wearing comfort.

[0075] See also Figures 8 to 10In some embodiments, at least one sound receiving portion 25 includes two sound receiving channels 251 that are interconnected, and the two sound receiving channels 251 are arranged at an angle. Preferably, the two sound receiving channels 251 are perpendicular to each other, so that the two sound receiving channels 251 can form an L-shaped sound receiving channel 251. When wind blows through the earphone, due to the curved structure of the sound receiving channel 251, the wind noise will be reflected and attenuated in the channel, thereby reducing the interference to the sound receiving quality. In addition, one of the two sound receiving channels 251 corresponds to the sound receiving hole 14, ensuring that the sound can smoothly enter the sound receiving channel 251, which not only improves the sensitivity of the sound receiving, but also makes the sound more stable and clear during the propagation process.

[0076] By adopting this L-shaped sound receiving channel 251 design, the open-ear headphones 100 have significantly improved their sound receiving performance. Whether listening to music, making calls or recording, users can get a clearer and purer sound experience without being disturbed by external factors such as wind noise.

[0077] The same or similar numbers in the drawings of this embodiment correspond to the same or similar items; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this 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. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0078] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An open-type headphone, characterized in that: include: The sound-emitting housing (1) is provided with a sound outlet (11); as well as The movement (2) is arranged in the sound-generating housing (1), and the movement (2) comprises: A first speaker (21), arranged corresponding to the sound outlet hole (11); The second speaker (22) is arranged on a side of the first speaker (21) away from the sound outlet (11), and is spaced apart from the first speaker (21) and together forms a rear sound cavity (3) of the first speaker (21).

2. The open earphone according to claim 1, characterized in that The first horn (21) and the second horn (22) are arranged facing the same direction.

3. The open earphone according to claim 1, characterized in that The distance between the axis of the first speaker (21) and the axis of the second speaker (22) is greater than or equal to 0 mm and less than or equal to 5 mm.

4. The open earphone according to claim 1, characterized in that Along the axial direction of the first horn (21), the spacing between the first horn (21) and the second horn (22) is greater than or equal to 0.01 mm and less than or equal to 5 mm.

5. The open earphone according to claim 1, characterized in that: The movement (2) further comprises a bracket (23), which is arranged between the first speaker (21) and the second speaker (22), and is used to at least support the second speaker (22), and together with the first speaker (21) and the second speaker (22) form the rear sound cavity (3).

6. The open earphone according to claim 5, characterized in that The support (23) comprises: a hard support (231) for supporting at least the second speaker (22) and forming the rear sound cavity (3) together with the first speaker (21) and the second speaker (22); the hard support (231) is provided with a sound guide hole (2311) communicating with the rear sound cavity (3); the sound guide hole (2311) is arranged opposite to the acoustic hole (12) on the sound-emitting housing (1); and The soft part (232) is arranged at one end of the sound guide hole (2311) facing the acoustic hole (12), and the soft part (232) is provided with a connecting hole (2321). The sound guide hole (2311), the connecting hole (2321) and the acoustic hole (12) are connected in sequence, and the soft part (232) is used to seal the sound guide hole (2311) and the acoustic hole (12).

7. The open earphone according to claim 6, characterized in that The soft part (232) comprises: The extending portion (2322) is inserted into the sound guide hole (2311) and forms the communicating hole (2321); The sealing portion (2323) is connected to the extending portion (2322) and is located between the hard support (231) and the inner side wall of the sound-emitting portion shell (1). The sealing portion (2323) is arranged around the circumference of the connecting hole (2321).

8. The open earphone according to claim 7, characterized in that: The sealing portion (2323) is provided with a convex rib (4), the convex rib (4) is pressed onto the inner side wall of the sound-emitting portion shell (1), and the convex rib (4) is arranged around the circumference of the acoustic hole (12).

9. The open earphone according to claim 1, characterized in that: A glue filling groove (13) is provided on the inner side wall of the sound-emitting housing (1), and the glue filling groove (13) is arranged around the circumference of the first speaker (21). Glue is provided in the glue filling groove (13) to bond the first speaker (21) to the sound-emitting housing (1).

10. The open earphone according to claim 1, characterized in that: The movement (2) further comprises a circuit board (24) and a bracket (23), wherein the circuit board (24) is mounted on the bracket (23), and the circuit board (24) and the second speaker (22) are located on the same side of the bracket (23).

11. The open earphone according to claim 10, characterized in that: The circuit board (24) comprises a main control board (241) and a sub-control board (242) electrically connected to the main control board (241); the main control board (241) is mounted on the bracket (23) and arranged in layers with the sub-control board (242); and the main control board (241) and the sub-control board (242) are arranged to overlap at least partially.

12. The open earphone according to claim 11, characterized in that The plane where the main control panel (241) is located is arranged parallel to the plane where the sub-control panel (242) is located in space; or, The plane where the main control panel (241) is located and the plane where the sub-control panel (242) is located are arranged to intersect in space.

13. The open earphone according to claim 11, characterized in that The main control board (241) and the sub-control board (242) are electrically connected via a flexible printed circuit board (5).

14. The open earphone according to claim 13, characterized in that The flexible printed circuit board (5) has a redundant section (51), and the redundant section (51) is connected to the sub-control board (242).

15. The open earphone according to claim 13, characterized in that: The flexible printed circuit board (5) is in a tensioned state when connected to the main control board (241) and the sub-control board (242).

16. The open earphone according to claim 1, characterized in that The movement (2) further comprises at least two sound receiving parts (25), each of the sound receiving parts (25) being arranged corresponding to a sound receiving hole (14) on the sound emitting part housing (1), one of the sound receiving parts (25) being arranged adjacent to the sound output hole (11), another of the sound receiving parts (25) being arranged on the side opposite to the sound output hole (11), and the sound inlet holes of the two sound receiving parts (25) being arranged in opposite directions.

17. The open earphone according to claim 16, characterized in that At least one of the sound receiving parts (25) comprises two sound receiving channels (251) that are connected to each other, and the two sound receiving channels (251) are arranged at an angle.

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