Open type noise reduction earphone

Abstract

The utility model relates to the technical field of earphone equipment, in particular to an open type noise reduction earphone, which comprises an earphone main body, a microphone, a sound output assembly and a control unit assembly, the earphone main body comprises a wearing frame, a shell and a protective net, the microphone is embedded in the outer wall of the earphone main body, and the sound output assembly is embedded in the outer wall of the earphone main body. The camera is mounted at one end, away from the shell, of the wearing frame. According to the utility model, the microphone is far away from the horn sound cavity, and the auricle is used as a barrier, so that the sound short circuit phenomenon between the horn and the microphone can be effectively reduced, the howling problem of active noise reduction can be effectively solved, the isolation degree with the horn can be increased, sound leakage can be effectively prevented, and the integrity of sound received by a user can be improved; the earphone adopts a feed-forward active noise reduction function, not only can enjoy a non-comfortable wearing experience, but also can enjoy a quiet experience of active noise reduction and noise elimination, and meanwhile, the auricle is used as a barrier, so that the phenomenon that wind noise is directly blown to the microphone can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of earphone equipment, in particular to an open noise reduction earphone Background Art

[0002] Headphones are a pair of conversion units that receive electrical signals from a media player or receiver and convert them into audible sound waves using speakers close to the ears. Headphones can be separated from the media player and connected using only a plug, so you can listen to the audio without disturbing others. They can also block out the sounds of the surrounding environment, which is very helpful for people who use them in noisy environments such as recording studios, bars, travel, and sports. Headphones were originally used for telephones and radios, but with the popularity of portable electronic devices, headphones are mostly used in mobile phones, walkmans, radios, portable video games, and digital audio players.

[0003] At present, the headsets on the market are roughly divided into two types: wired headsets and Bluetooth headsets. Among the headsets used in mobile phones, the frequency of Bluetooth headsets is increasing day by day. Bluetooth headsets are the application of Bluetooth technology to hands-free headsets, allowing users to avoid the entanglement of annoying wires and make calls in various ways easily. Since the advent of Bluetooth headsets, they have been a good tool for mobile business people to improve efficiency.

[0004] However, the sound quality of current earphones varies greatly with the user experience during use, especially when making calls or listening to music, the noise reduction function of the earphones is particularly important. When the earphones are in use, the microphone and the earpiece are located close to each other, which can easily lead to an acoustic short circuit. At the same time, the existing earphones are easily affected by external air flow or noise, which can easily affect the user's ability to receive sound. In addition, most earphones adopt a fully open design with poor isolation, which can cause serious sound leakage. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an open-type noise reduction headset to solve the technical problems that, when the prior earphones are in use, the microphone and the earpiece are located close to each other, which easily leads to the occurrence of a sound short circuit phenomenon; at the same time, the prior earphones are easily affected by the flow of external air or noisy sounds, which easily affects the user's ability to receive sound; and most earphones adopt a fully open design with poor isolation, which causes serious technical problems such as serious sound leakage.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An open noise-cancelling headset, comprising:

[0008] The earphone body comprises a wearing frame, a shell and a protective net, and the wearing frame is designed to be curved to fit the auricle;

[0009] A microphone; the microphone is embedded in the outer wall of the earphone body and is installed at one end of the wearing frame away from the housing;

[0010] A sound output component; the sound output component is arranged inside the shell, and the sound output component includes a mounting frame, a speaker, a receiving frame, a metal connecting pin and a battery. The mounting frame is embedded inside the shell, one side of the speaker is snap-connected with the mounting frame, and the other side of the speaker is snap-connected with one side of the receiving frame. The battery is snap-connected inside the other side of the receiving frame, and the metal connecting pin is arranged inside the receiving frame for electrical connection between the battery and the speaker, so as to facilitate the power supply of the battery;

[0011] Control unit assembly; the control unit assembly is arranged in the shell, and the control unit assembly includes a control unit circuit board, a protective frame, a noise reduction unit circuit board and a clamping frame, the control unit circuit board is arranged on one side of the protective frame, the noise reduction unit circuit board is arranged on the other side of the protective frame, and is limitedly clamped by the clamping frame, the other side of the control unit circuit board is in contact with the battery, the control unit circuit board, the protective frame and the noise reduction unit circuit board are all located in the clamping frame, and the noise reduction unit circuit board, the microphone and the sound output assembly constitute a feedforward active noise reduction system.

[0012] Furthermore, a protective net is fixedly installed on the inner wall of one side of the shell close to the speaker for air conduction and passage of sound.

[0013] Furthermore, a protrusion is provided on one side of the support frame close to the battery, and a bayonet is provided on one side of the battery, and the bayonet is engaged with the protrusion.

[0014] Furthermore, a protrusion is provided at the edge of the supporting frame, and the protrusion is engaged with the inner wall of the shell.

[0015] Furthermore, a buckle is provided on one side of the clamping frame, and the buckle is clamped with an opening on one side of the shell, and a mounting cover is embedded and clamped on the other side of the clamping frame.

[0016] Furthermore, the wearing frame is fixedly connected to the shell, and an air leakage hole is opened on an outer wall of one side of the shell.

[0017] Beneficial effects of the utility model:

[0018] By keeping the microphone away from the speaker's sound cavity and using the auricle as a barrier, the acoustic short circuit between the speaker and the microphone can be effectively reduced, the howling problem of active noise reduction can be effectively solved, and the isolation from the speaker can be increased, which can effectively prevent sound leakage and improve the integrity of the sound received by the user. The earphones use a feedforward active noise reduction function, which not only allows you to enjoy a comfortable wearing experience without feeling, but also a quiet experience of active noise reduction. At the same time, using the auricle as a barrier can effectively block the wind noise from blowing directly to the microphone, effectively solving the problem of wind noise, facilitating the promotion and use of earphones, and giving users a better experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the exploded structure of the embodiment of the open-type noise-cancelling headphone;

[0021] Figure 2 This is a schematic diagram of the exploded structure of the shell of the open noise-cancelling headphone embodiment;

[0022] Figure 3 A schematic diagram of a front view of a shell of an open-type noise-cancelling headphone embodiment;

[0023] Figure 4 The open noise reduction headphone embodiment Figure 3 AA plane cross-sectional view;

[0024] Figure 5 is a rear perspective structural diagram of an embodiment of the open-type noise-cancelling headphone;

[0025] Figure 6 This is a top-down perspective structural diagram of an embodiment of the open-type noise-cancelling headphone;

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of the mounting frame and the supporting frame of the open-type noise-cancelling headphone embodiment;

[0027] Figure 8 is a front view schematic diagram of an embodiment of the open-type noise-cancelling headphone;

[0028] Fig. 9 This is a schematic diagram of the three-dimensional structure of the shell of the open-type noise-cancelling headphone embodiment;

[0029] Fig.10 This is a schematic diagram of the working principle of the active noise reduction system of the open-type noise reduction headset embodiment.

[0030] Explanation of the markings in the figure: 1. Earphone body; 11. Wearing frame; 12. Outer shell; 13. Air vent; 14. Protective net; 15. Mounting cover; 2. Microphone; 3. Sound output component; 31. Mounting frame; 32. Speaker; 33. Support frame; 34. Metal connecting pin; 35. Battery; 4. Control unit component; 41. Control unit circuit board; 42. Protective frame; 43. Noise reduction unit circuit board; 44. Snap-on frame. DETAILED DESCRIPTION

[0031] The following will be combined with the attached embodiment of the present utility model Figure 1-10 , the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0033] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0034] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0035] See also Figure 1-10As shown, an open noise reduction headset comprises: an earphone body 1, a microphone 2, a sound output component 3 and a control unit component 4, the earphone body 1 comprises a wearing frame 11, a shell 12 and a protective net 14, the microphone 2 is embedded in the outer wall of the earphone body 1, and is installed at the end of the wearing frame 11 away from the shell 12, the sound output component 3 is arranged inside the shell 12, the sound output component 3 comprises a mounting frame 31, a speaker 32, a receiving frame 33, a metal connecting pin 34 and a battery 35, the mounting frame 31 is embedded in the shell 12, one side of the speaker 32 is snap-connected with the mounting frame 31, and the sound output component 3 should also include components such as a diaphragm, a magnet and a voice coil, the other side of the speaker 32 is embedded in one side of the receiving frame 33, and the battery 35 is embedded in the other side of the receiving frame 33 The metal connecting pin 34 is arranged inside the receiving frame 33, which is used for the electrical connection between the battery 35 and the speaker 32, so as to facilitate the power supply of the battery 35. The control unit component 4 is arranged in the housing 12, and the control unit component 4 includes a control unit circuit board 41, a protective frame 42, a noise reduction unit circuit board 43 and a clamping frame 44. The control unit circuit board 41 is arranged on one side of the protective frame 42, and the noise reduction unit circuit board 43 is arranged on the other side of the protective frame 42, and the clamping frame 44 is used for limiting clamping. The other side of the control unit circuit board 41 is in contact with the battery 35. The control unit circuit board 41, the protective frame 42 and the noise reduction unit circuit board 43 are all located in the clamping frame 44. The noise reduction unit circuit board 43, the microphone 2 and the sound output component 3 form a feedforward active noise reduction system (whose working principle is as shown in FIG. Fig.10As shown), after the microphone 2 (FF_MIC) receives the voice emitted by the user, it is processed by the DAC in the control unit circuit board 41, and the sound signal is filtered by the filter, and then the control unit circuit board 41 sends it to the mobile phone end. The audio signal received by the mobile phone end is processed by the DAC and then by the filter, and then sent to the speaker 32 for playback and then received by the user's ear. The noise reduction unit circuit board 43 can eliminate noise to a certain extent. The control unit circuit board 41 and the noise reduction unit circuit board 43 are both PCB boards. The battery 35 is electrically connected to the speaker 32, the microphone 2, the control unit circuit board 41 and the noise reduction unit circuit board 43, providing the headset with Electric energy, the control unit circuit board 41 is electrically connected to the speaker 32 and the microphone 2, the control unit circuit board 41 is electrically connected to the noise reduction unit circuit board 43, and components such as a microchip and an audio decoder are arranged in the control unit circuit board 41. The microchip is used for the Bluetooth connection of the headset and is used to process the Bluetooth connection and decoding operations. The wearing frame 11 is fixedly connected to the shell 12, and an air vent 13 is provided on one side of the outer wall of the shell 12. The wearing frame 11 adopts a curved design for use with the auricle. The noise reduction unit circuit board 43, the microphone 2 and the sound output component 3 are all sealed and isolated to avoid acoustic short circuits between the microphone 2 and the speaker 32 as much as possible. DAC is a digital-to-analog converter, and it and the filter are both prior arts, and their principles of use are all known.

[0036] Specifically, by keeping the microphone 2 away from the acoustic cavity of the speaker 32 and using the auricle as a barrier, the acoustic short circuit phenomenon between the speaker 32 and the microphone 2 can be effectively reduced, the howling problem of active noise reduction can be effectively solved, and the isolation from the speaker 32 can be increased, thereby effectively preventing sound leakage and improving the integrity of the sound received by the user. The earphones adopt a feedforward active noise reduction function, which not only provides a comfortable wearing experience without feeling, but also a quiet experience of active noise reduction and noise elimination. At the same time, using the auricle as a barrier can effectively block the phenomenon of wind noise blowing directly to the microphone 2, effectively solving the problem of wind noise, facilitating the promotion and use of earphones, and providing users with a better experience.

[0037] In this embodiment, a protective net 14 is fixedly mounted on the inner wall of one side of the housing 12 close to the speaker 32 for air conduction and passage of sound.

[0038] Specifically, the protective net 14 can prevent foreign objects in the ear from entering the housing 12, which is helpful to protect the earphone for better use.

[0039] A protrusion is formed on one side of the support frame 33 close to the battery 35 , and a snap-in is provided on one side of the battery 35 , and the snap-in is snap-connected with the protrusion.

[0040] Specifically, the battery 35 is arranged in an embedded snap-in manner, so that the installation of the battery 35 is more stable, which is convenient for the long-term use of the battery 35, helps to improve its sealing performance, and prevents the power supply current of the battery 35 from affecting the earphone.

[0041] A protrusion is provided at the edge of the supporting frame 33, and the protrusion is snap-fitted with the inner wall of the shell 12. A buckle is provided on one side of the snap-fit ​​frame 44, and the snap-fit ​​is snap-fitted with an opening on one side of the shell 12. A mounting cover 15 is embedded and snap-fitted on the other side of the snap-fit ​​frame 44.

[0042] Specifically, the support frame 33 is installed in a snap-on manner, which facilitates the rapid assembly of the earphones and helps to improve the sealing of the earphones. A sealing ring can be added at the connection to help the earphones seal better. The installation cover 15 can be opened to facilitate observation of its internal components when the earphones are damaged.

[0043] In summary, compared with the prior art, the headset has at least the following beneficial effects: by keeping the microphone 2 away from the acoustic cavity of the speaker 32 and using the auricle as a barrier, the acoustic short circuit phenomenon between the speaker 32 and the microphone 2 can be effectively reduced, and the howling problem of active noise reduction can be effectively solved. The isolation from the speaker 32 can be increased, and the sound leakage can be effectively prevented, thereby improving the integrity of the sound received by the user. The headset adopts a feedforward active noise reduction function, which not only provides a comfortable wearing experience without feeling, but also a quiet experience of active noise reduction and noise elimination. At the same time, using the auricle as a barrier can effectively block the phenomenon of wind noise blowing directly to the microphone 2, effectively solving the problem of wind noise, facilitating the promotion and use of the headset, and providing the user with a better experience.

[0044] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An open noise-cancelling headset, characterized in that: include: An earphone body (1); the earphone body (1) comprises a wearing frame (11), a shell (12) and a protective net (14); the wearing frame (11) is designed to be curved to fit the auricle; A microphone (2); the microphone (2) is embedded in the outer wall of the earphone body (1), and is installed at one end of the wearing frame (11) away from the outer shell (12); A sound output component (3); the sound output component (3) is arranged inside the housing (12), the sound output component (3) comprises a mounting frame (31), a speaker (32), a receiving frame (33), a metal connecting pin (34) and a battery (35); the mounting frame (31) is embedded inside the housing (12); one side of the speaker (32) is snap-connected with the mounting frame (31); the other side of the speaker (32) is snap-connected with one side of the receiving frame (33); the battery (35) is snap-connected inside the other side of the receiving frame (33); the metal connecting pin (34) is arranged inside the receiving frame (33) and is used for electrical connection between the battery (35) and the speaker (32), so as to facilitate power supply of the battery (35); A control unit component (4); the control unit component (4) is arranged in a housing (12), the control unit component (4) comprises a control unit circuit board (41), a protective frame (42), a noise reduction unit circuit board (43) and a snap-on frame (44); the control unit circuit board (41) is arranged on one side of the protective frame (42), the noise reduction unit circuit board (43) is arranged on the other side of the protective frame (42), and is limitedly snap-on arranged by using the snap-on frame (44); the other side of the control unit circuit board (41) is in contact with a battery (35); the control unit circuit board (41), the protective frame (42) and the noise reduction unit circuit board (43) are all located in the snap-on frame (44); the noise reduction unit circuit board (43), the microphone (2) and the sound output component (3) form a feedforward active noise reduction system.

2. The open-type noise-cancelling headphone according to claim 1, characterized in that: A protective net (14) is fixedly mounted on the inner wall of one side of the housing (12) close to the speaker (32) for air conduction and passage of sound.

3. The open-type noise-cancelling headphone according to claim 2, characterized in that: A protrusion is provided on one side of the support frame (33) close to the battery (35), and a bayonet is provided on one side of the battery (35), and the bayonet is engaged with the protrusion.

4. The open-type noise-cancelling headphone according to claim 3, characterized in that: A protrusion is provided at the edge of the supporting frame (33), and the protrusion is engaged with the inner wall of the outer shell (12).

5. The open-type noise-cancelling headphone according to claim 4, characterized in that: A buckle is provided on one side of the clamping frame (44), and the buckle is clamped with an opening on one side of the housing (12), and a mounting cover (15) is embedded and clamped in the other side of the clamping frame (44).

6. The open-type noise-cancelling headphone according to claim 1, characterized in that: The wearing frame (11) is fixedly connected to the outer shell (12), and an air leakage hole (13) is opened on one side outer wall of the outer shell (12).

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