A headset

Abstract

The earphone comprises a shell, a sound production assembly, a feedback microphone and a support, the shell has a containing cavity and a sound outlet communicating with the containing cavity; the sound production assembly comprises a first sound production unit and a second sound production unit, the first sound production unit is connected with the shell and divides the containing cavity into a front cavity and a rear cavity, the front cavity communicates with the sound outlet, the second sound production unit, the feedback microphone and the support are arranged in the front cavity, the support is connected with the shell, the feedback microphone and the second sound production unit are arranged on the support, a sound pickup channel is arranged in the support, and the sound pickup channel communicates a sound pickup opening of the feedback microphone with the sound outlet. The sound pickup channel is arranged in the support, the front cavity space is not additionally occupied, the acoustic paths of the sound production assembly and the feedback microphone are separated in the limited front cavity space, resonance of the sound production assembly and the feedback microphone is reduced, and the front cavity space utilization rate is improved.

Description

Technical Field

[0001] This application relates to the field of headphone technology, and more particularly to a type of headphone. Background Technology

[0002] In related technologies, Bluetooth headsets come in various types, such as in-ear headsets, semi-in-ear headsets, and open-back headsets. Bluetooth headsets require the installation of various acoustic components, batteries, circuit boards, and other parts. In order to reduce mutual interference between various acoustic components, some Bluetooth headsets separate the placement of various acoustic components, but this can easily make the Bluetooth headsets larger in size. Utility Model Content

[0003] This application provides an earphone that can improve the space utilization of the earphone shell while reducing the impact of resonance on the feedback microphone.

[0004] This application provides an earphone, characterized in that it includes:

[0005] The housing has a receiving cavity and a sound outlet communicating with the receiving cavity;

[0006] A sound-generating assembly is disposed in the receiving cavity. The sound-generating assembly includes a first sound-generating unit and a second sound-generating unit. The first sound-generating unit is connected to the housing and divides the receiving cavity into a front cavity and a rear cavity. The front cavity is connected to the sound outlet, and the second sound-generating unit is disposed in the front cavity.

[0007] A feedback microphone is disposed in the front cavity;

[0008] A bracket is located in the front cavity and connected to the housing. The feedback microphone and the second sound-emitting unit are both mounted on the bracket. The bracket has a pickup channel that connects the pickup port of the feedback microphone to the sound output port.

[0009] Based on the headphones in this embodiment, a feedback microphone is set in the front cavity, thereby making full use of the front cavity space, making the overall structure of the headphones more compact and effectively reducing the volume. At the same time, a pickup channel is set in the bracket, so that the feedback microphone can pick up the sound signal outside the sound port through the pickup channel on the bracket. Thus, the bracket does not occupy additional front cavity space within the limited front cavity space, and forms a physical isolation between the acoustic path of the sound-generating component and the feedback microphone. While ensuring the independence of the sound propagation path, it significantly reduces the resonance interference generated between the sound-generating component and the feedback microphone. In other words, this embodiment optimizes the setting and layout of each component in the front cavity. Within the limited front cavity space, the acoustic path is effectively separated by the bracket, thereby reducing the resonance interference between the sound-generating component and the feedback microphone and achieving the goal of improving the utilization rate of the front cavity space. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the headphone structure in one embodiment of this application;

[0012] Figure 2 This is a schematic diagram of the exploded structure of the headphones in one embodiment of this application;

[0013] Figure 3 This is a schematic diagram of the first cross-sectional structure of the earphone in one embodiment of this application;

[0014] Figure 4 This is an exploded view of the housing of a portion of the earphones in one embodiment of this application;

[0015] Figure 5 This is a schematic diagram of the first-view structure of some of the headphones in one embodiment of this application;

[0016] Figure 6 This is a schematic diagram of the second-view structure of some of the headphones in one embodiment of this application;

[0017] Figure 7 This is a schematic diagram of the second cross-sectional structure of the earphone in one embodiment of this application.

[0018] Figure label:

[0019] 1. Headphones;

[0020] 10. Housing; 11. Receiving cavity; 111. Front cavity; 112. Rear cavity; 12. Sound outlet; 121. First outlet; 122. Second outlet; 13. Pressure relief hole; 14. Sound outlet gap;

[0021] 20. Sound-producing component; 21. First sound-producing unit; 22. Second sound-producing unit; 221. Sound outlet;

[0022] 30. Bracket; 31. Sound pickup channel; 32. First mounting slot; 33. Second mounting slot;

[0023] 40. Feedback microphone;

[0024] 50. Filter structure. Detailed Implementation

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, a clear and complete description will be provided below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] In related technologies, Bluetooth headsets need to incorporate various acoustic components, batteries, circuit boards, and other parts. To reduce interference between these components, some Bluetooth headsets separate the placement of these components, but this can easily make the headsets larger.

[0027] For the above situation, please refer to Figures 1-4 This application proposes an earphone 1, including a housing 10, a sound-generating component 20, a bracket 30, and a feedback microphone 40.

[0028] The housing 10 has a receiving cavity 11 and a sound outlet 12 communicating with the receiving cavity 11; the sound-generating assembly 20 is disposed in the receiving cavity 11, and the sound-generating assembly 20 includes a first sound-generating unit 21 and a second sound-generating unit 22. The first sound-generating unit 21 is connected to the housing 10 and divides the receiving cavity 11 into a front cavity 111 and a rear cavity 112. The front cavity 111 is communicating with the sound outlet 12, and the second sound-generating unit 22 is disposed in the front cavity 111. Both the first sound-generating unit 21 and the second sound-generating unit 22 are communicating with the sound outlet 12 through the front cavity 111; the feedback microphone 40 is disposed in the front cavity 111; the bracket 30 is disposed in the front cavity 111 and is connected to the housing 10. Both the feedback microphone 40 and the second sound-generating unit 22 are disposed on the bracket 30. The bracket 30 is provided with a pickup channel 31, which connects the pickup port of the feedback microphone 40 and the sound outlet 12.

[0029] Specifically, the housing 10 provides a base and installation space for the sound-emitting component 20, the bracket 30, and the feedback microphone 40. The first sound-emitting unit 21 and the second sound-emitting unit 22 can emit sound and transmit it to the outside of the sound outlet 12 through the front cavity 111. The bracket 30 has a pickup channel 31, which separates the acoustic paths of the sound-emitting component 20 and the feedback microphone 40. The acoustic paths of the sound-emitting component 20 and the feedback microphone 40 are independent, effectively reducing acoustic interference and improving sound quality. At the same time, both the bracket 30 and the feedback microphone 40 are located in the front cavity 111 to fully utilize the installation space in the front cavity 111, thereby reducing the size of the earphone 1. This compact structural design not only improves the portability of the earphone 1 but also achieves a perfect combination of high performance and aesthetics through efficient space utilization. The second sound-emitting unit 22 can work in conjunction with the first sound-emitting unit 21 to create richer sound layers, enhance the stereo effect and clarity of the sound, and thus bring users a more immersive listening experience. The first sound-producing unit 21 can be a dynamic coil unit or a balanced armature unit, and the second sound-producing unit 22 can be a dynamic coil unit or a balanced armature unit.

[0030] It should be noted that, compared to setting up a separate space on the side of the sound-generating component 20 to install the feedback microphone 40, this embodiment of the application sets up the feedback microphone 40 in the front cavity 111, thereby making full use of the space in the front cavity 111, making the overall structure of the earphone 1 more compact and effectively reducing the volume; at the same time, the sound pickup channel 31 inside the bracket 30 does not occupy additional space in the front cavity 111, thus reducing the occupation of the space in the front cavity 111 and reducing the obstruction to the sound propagation of the sound-generating component 20. The feedback microphone 40 picks up the sound signal outside the sound port 12 through the pickup channel 31 on the bracket 30, thereby enabling the bracket 30 to physically isolate the acoustic path of the sound-generating component 20 and the feedback microphone 40 within the limited space of the front cavity 111. While ensuring the independence of the sound propagation path, it significantly reduces the resonance interference generated between the sound-generating component 20 and the feedback microphone 40. In other words, the embodiment of this application optimizes the setting and layout of each component in the front cavity 111. Within the limited space of the front cavity 111, the bracket 30 effectively separates the acoustic path, thereby reducing the resonance interference between the sound-generating component 20 and the feedback microphone 40, and achieving the goal of improving the space utilization of the front cavity 111, thus achieving high-efficiency acoustic performance in a compact structure.

[0031] It should also be noted that the active noise cancellation system of the earphone 1 has the best control effect when the sound pressure signal collected by the feedback microphone 40 can accurately reflect the actual sound field state at the eardrum. In this embodiment, by setting a bracket 30 with an independent pickup channel 31, the feedback microphone 40 can be directly connected to the sound outlet 12 through the pickup channel 31, so that the sound waves outside the sound outlet 12 can be directly transmitted to the feedback microphone 40 through the independent pickup channel 31, and the sound emitted by the sound-generating component 20 can also be transmitted to the outside of the sound outlet 12 through the sound outlet cavity. In this embodiment, the sound outlet cavity and the pickup channel 31 are both located in the front cavity 111, but they are independent of each other. This layout not only ensures the accurate sampling of the ear canal sound field by the active noise cancellation system, but also reserves a lossless acoustic propagation path for the sound-generating component 20, ultimately achieving a synergistic effect of high sound quality and excellent noise cancellation performance.

[0032] In some embodiments, such as Figures 1-3 As shown, the housing 10 also has a pressure relief hole 13, which communicates with the rear cavity 112. The design of the pressure relief hole 13 helps to balance the air pressure inside and outside the rear cavity 112, reducing sound wave interference and ensuring air pressure balance between the front cavity 111 and the rear cavity 112 in the earphone 1. This reduces distortion caused by air pressure imbalance and improves the sensitivity of the earphone 1. Furthermore, the pressure relief hole 13 effectively prevents damage to internal components of the earphone 1 due to air pressure changes, extending its service life.

[0033] Furthermore, such as Figures 2-3 As shown, the earphone 1 also includes a filter structure 50 disposed on the housing 10, the filter structure 50 covering the sound outlet 12 and / or the pressure relief hole 13.

[0034] Specifically, the filter structure 50 located at the sound outlet 12 and the pressure relief hole 13, after the earphone 1 is partially inserted into the ear canal, can prevent earwax, dust, and other foreign objects in the ear canal from entering the front cavity 111 and the pickup channel 31 through the sound outlet 12, and can also prevent dust from entering the rear cavity 112, thus extending the service life of the earphone 1. The filter structure 50 located at the sound outlet 12 also has a sound tuning function. The filter structure 50 uses breathable material to ensure smooth sound wave transmission, increasing the low-frequency response and reducing harshness in the high frequencies, thereby improving the overall sound quality.

[0035] Please see Figure 4 In some embodiments of this application, the bracket 30 and the first sound-emitting unit 21 are arranged at a distance from each other, and the distance between the bracket 30 and the first sound-emitting unit 21 forms a sound outlet gap 14. Both the first sound-emitting unit 21 and the second sound-emitting unit 22 can communicate with the sound outlet 12 through the sound outlet gap 14.

[0036] Specifically, the bracket 30 and the second sound-emitting unit are disposed in the front cavity 111. The space formed by the bracket 30, the first sound-emitting unit 21 and part of the housing 10 in the front cavity 111 is the sound outlet gap 14. The bracket 30 is provided with a sound pickup channel 31, so that the bracket 30 separates the acoustic path of the sound-emitting component 20 and the feedback microphone 40. The sound pickup channel 31 and the sound outlet gap 14 are independent of each other, effectively reducing acoustic interference.

[0037] The bracket 30 and the first sound-emitting unit 21 are positioned at a distance from each other, forming a sound outlet gap 14. This reduces the obstruction of sound emitted by the first sound-emitting unit 21 at different locations, ensuring optimized sound wave transmission paths, improving sound purity and penetration, and resulting in more delicate sound quality. Simultaneously, the pickup channel 31 is located inside the bracket 30, reducing its space occupation in the sound outlet gap 14, further improving the space utilization of the front cavity 111, ensuring efficient and coordinated operation of all components, optimizing the overall acoustic layout, and delivering a more balanced and clearer sound quality.

[0038] Please see Figures 5-6 In some embodiments of this application, the bracket 30 is provided with a first mounting groove 32 on the side facing the first sound-emitting unit 21, and the second sound-emitting unit 22 is disposed in the first mounting groove 32.

[0039] Specifically, the first mounting groove 32 can provide a base and installation space for the second sound unit 22. The depth and width of the first mounting groove 32 are matched with the size of the second sound unit 22 to ensure the stable installation of the second sound unit 22 and prevent the second sound unit 22 from shifting during vibration, thus affecting the stability of the sound quality.

[0040] Please see Figures 5-6 In some embodiments of this application, the bracket 30 is provided with a second mounting groove 33 on the side facing the first sound-emitting unit 21, and the feedback microphone 40 is disposed in the second mounting groove 33. The second mounting groove 33 is connected to the pickup channel 31.

[0041] Specifically, the second mounting slot 33 provides a base and installation space for the feedback microphone 40. The depth and width of the second mounting slot 33 match the size of the feedback microphone 40 to ensure a stable installation of the feedback microphone 40 and prevent displacement of the feedback microphone 40 during vibration, which would affect the stability of the sound quality. At the same time, the orientation of the pickup port of the feedback microphone 40 towards the side wall of the second mounting slot 33 can reduce interference from the sound output cavity and ensure the pickup accuracy of the feedback microphone 40.

[0042] Furthermore, in some embodiments of this application, the first sound-producing unit 21 is a moving coil unit, and the second sound-producing unit 22 is a moving iron unit.

[0043] Specifically, the dynamic driver unit mainly consists of a magnet, a metal coil, and a diaphragm. The dynamic driver unit has low distortion and a wide frequency response, and performs well in low-frequency output. The balanced armature driver unit generates sound by vibrating through the direction and strength of magnetic fields. The balanced armature driver unit is small in size and highly sensitive, and performs well in high-frequency output. The combination of the two can ensure the bass output effect and improve the treble output effect, thereby achieving balanced output across all frequency bands of the earphone 1 and meeting the user's pursuit of high-quality sound effects.

[0044] In some embodiments of this application, such as Figure 5 As shown, the second sound-emitting unit 22 is located in the middle of the bracket 30, and the feedback microphone 40 is located on one side of the second sound-emitting unit 22. The location of the second sound-emitting unit 22 in the middle of the bracket 30 results in a larger distance between the second sound-emitting unit 22 and the surrounding sidewall of the housing 10, providing more spacious space for the second sound-emitting unit 22 and reducing the obstruction of sound emitted by the housing 10. At this time, the second sound-emitting unit 22 and the feedback microphone 40 are spaced apart on the bracket 30. The sound emitted from the sound outlet 221 is transmitted to the outside of the sound outlet 12 via the sound outlet gap 14, and the feedback microphone 40 picks up the sound in the ear canal through the independent path of the pickup channel 31. The spaced arrangement between the sound outlet 221 of the second sound-emitting unit 22 and the outlet of the pickup channel 31 ensures independent operation of the second sound-emitting unit 22 and the feedback microphone 40, reducing mutual interference.

[0045] In some embodiments, such as Figure 2 As shown, a separator is also provided on the housing 10 at the sound outlet 12, dividing the sound outlet 12 into a first outlet 121 and a second outlet 122. The first outlet 121 is connected to the sound outlet cavity and is correspondingly arranged with the sound outlet 221 of the second sound unit 22. The second outlet 122 is connected to one end of the pickup channel 31, thereby ensuring that the sound is transmitted separately, reducing mixing interference, and further improving the clarity and layering of the sound. The area of ​​the first outlet 121 is larger than that of the second outlet 122, which makes the sound transmission of the first outlet 121 more direct, reduces the energy loss of sound waves in the sound outlet cavity, and ensures efficient output of sound in the sound outlet cavity. At the same time, the area of ​​the second outlet 122 is smaller, which helps to accurately control the sound wave transmission in the pickup channel 31, avoids unnecessary reflections, ensures that the sound picked up by the feedback microphone 40 is purer, further improves the accuracy and timeliness of sound feedback, and optimizes the overall sound effect performance.

[0046] Please see Figure 7In some embodiments of this application, the second sound-emitting unit 22 has a sound-emitting port 221 facing the sound outlet 12. The sound-emitting port 221 is connected to the sound outlet 12 through the front cavity 111. The maximum distance between the sound-emitting port 221 and the sound outlet 12 is d1, and d1 satisfies: d1≤1.7mm.

[0047] Specifically, setting d1 ensures a short sound transmission path from the second sound unit 22 to the sound outlet 12, which helps improve sound transmission efficiency, reduce sound signal attenuation, and further enhance sound quality. By precisely controlling d1, the sound wave energy emitted from the sound outlet 221 of the second sound unit 22 is closer to the ear canal entrance, which reduces excessive reflection and diffraction of sound waves during transmission, thereby ensuring the immediacy and accuracy of sound transmission, effectively enhancing high-frequency resolution and sound field extension, and further optimizing sound quality performance.

[0048] In some embodiments of this application, such as Figure 4 As shown, the minimum distance from the feedback microphone 40 to the first sound unit 21 is d2, and the minimum distance from the second sound unit 22 to the first sound unit 21 is d3. d2 and d3 satisfy: d2 < d3.

[0049] Specifically, within the limited space of the front cavity 111, the distance between the second sound unit 22 and the first sound unit 21 is relatively large. That is, the sound outlet 221 of the second sound unit 22 is far from the first sound unit 21, which helps to reduce the mutual interference between the first sound unit 21 and the second sound unit 22. On the other hand, the distance between the feedback microphone 40 and the first sound unit 21 is relatively small. This is because the pickup port of the feedback microphone 40 is directly connected to the pickup channel 31. The pickup channel 31 and the sound outlet cavity are independent of each other. The distance between the feedback microphone 40 and the first sound unit 21 will not affect the pickup effect of the feedback microphone 40. Therefore, within the limited space of the front cavity 111, placing the second sound unit 22 at a position far from the first sound unit 21 can reduce the sound wave interference between the first sound unit 21 and the second sound unit 22, and also ensure the independent operation of the sound-emitting component 20 and the feedback microphone 40, thereby achieving a purer sound quality output.

[0050] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0051] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An earphone, characterized in that, include: The housing has a receiving cavity and a sound outlet communicating with the receiving cavity; A sound-generating assembly is disposed in the receiving cavity. The sound-generating assembly includes a first sound-generating unit and a second sound-generating unit. The first sound-generating unit is connected to the housing and divides the receiving cavity into a front cavity and a rear cavity. The front cavity is connected to the sound outlet, and the second sound-generating unit is disposed in the front cavity. A feedback microphone is disposed in the front cavity; A bracket is located in the front cavity and connected to the housing. The feedback microphone and the second sound-emitting unit are both mounted on the bracket. The bracket has a pickup channel that connects the pickup port of the feedback microphone to the sound output port.

2. The headphones according to claim 1, characterized in that, The bracket is positioned at a distance from the first sound-emitting unit, and the gap between the bracket and the first sound-emitting unit forms a sound emission gap.

3. The headphones according to claim 1, characterized in that, The bracket has a first mounting groove on the side facing the first sound-generating unit, and the second sound-generating unit is disposed in the first mounting groove.

4. The headphones according to claim 1, characterized in that, The bracket has a second mounting slot on the side facing the first sound-generating unit, and the feedback microphone is disposed in the second mounting slot, which is connected to the pickup channel.

5. The headphones according to any one of claims 1 to 4, characterized in that, The second sound-emitting unit is located in the middle of the bracket, and the feedback microphone is located on one side of the second sound-emitting unit.

6. The headphones according to any one of claims 1 to 4, characterized in that, The first sound-producing unit is a moving coil unit, and the second sound-producing unit is a moving iron unit.

7. The headphones according to claim 6, characterized in that, The second sound-emitting unit has a sound-emitting port, which is connected to the sound outlet through the front cavity. The maximum distance between the sound-emitting port and the sound outlet is d1, and d1 satisfies: d1≤1.7mm.

8. The headphones according to any one of claims 1 to 4, characterized in that, The minimum distance from the feedback microphone to the first sound unit is d2, and the minimum distance from the second sound unit to the first sound unit is d3. d2 and d3 satisfy: d2 < d3.

9. The headphones according to any one of claims 1 to 4, characterized in that, The housing also has a pressure relief hole, which communicates with the rear cavity.

10. The headphones according to claim 9, characterized in that, The earphone also includes a filter structure disposed on the housing, the filter structure covering the sound outlet and / or the pressure relief hole.

Images