earphone

Abstract

This utility model discloses an earphone, including a housing and a sound-generating component; the housing is provided with a first sound outlet and a second sound outlet located on the same side wall; the sound-generating component is disposed inside the housing, and the sound-generating component and the housing form a first cavity and a second cavity, the first cavity communicating with the first sound outlet, and the second cavity being close to and communicating with the second sound outlet; the sound-generating component includes a bracket, a first woofer, a second woofer, and a tweeter; the bracket is connected to the housing, and the second cavity is located on the side of the bracket close to the second sound outlet; the first woofer and the second woofer are spaced apart on the bracket, and the diaphragms of the first woofer and the second woofer are far apart from each other; the first cavity is formed between the diaphragm of the first woofer and the housing, and between the diaphragm of the second woofer and the housing; the tweeter is mounted on the housing or the bracket and is located in the second cavity. This application can improve the sound quality of the earphone.

Description

Technical Field

[0001] This utility model relates to the field of acoustic device technology, and in particular to an earphone. Background Technology

[0002] In related technologies, headphones may use a combination of multiple speakers, with different speakers outputting sounds in different frequency bands. However, low-frequency sound waves have strong diffusion and gradually attenuate before entering the user's ear. Under the interference of high-frequency sound waves, distortion is easily caused, resulting in poor sound quality. Utility Model Content

[0003] This application provides an earphone that can improve sound quality.

[0004] This application provides an earphone, including a housing and a sound-generating assembly. The housing has a first sound outlet and a second sound outlet, which are located on the same side wall of the housing. The sound-generating assembly is disposed within the housing, and the sound-generating assembly and the housing form a first cavity and a second cavity. The first cavity communicates with the first sound outlet, and the second cavity is adjacent to and communicates with the second sound outlet. The sound-generating assembly includes a bracket, a first woofer, a second woofer, and a tweeter. The bracket is connected to the housing, and the second cavity is located on the side of the bracket near the second sound outlet. The first woofer and the second woofer are spaced apart on the bracket, with the diaphragms of the first woofer and the second woofer being far apart from each other. The first cavity is formed between the diaphragm of the first woofer and the housing, and between the diaphragm of the second woofer and the housing. The tweeter is mounted on the housing or the bracket and is located within the second cavity.

[0005] Secondly, embodiments of this application also provide an earphone, including a housing and a sound-generating assembly; the housing is provided with a first sound outlet and a second sound outlet, the first sound outlet and the second sound outlet being located on the same side wall of the housing; the sound-generating assembly is disposed within the housing, the sound-generating assembly and the housing forming a first cavity and a second cavity, the first cavity communicating with the first sound outlet, and the second cavity being close to and communicating with the second sound outlet; the sound-generating assembly includes a bracket, a first woofer, a second woofer, and a tweeter; the bracket is connected to the housing, the first woofer and the second woofer are spaced apart on the bracket, the diaphragm of the first woofer and the diaphragm of the second woofer are close to each other; the first cavity is located between the diaphragm of the first woofer and the diaphragm of the second woofer; the tweeter is mounted on the housing or the bracket and located within the second cavity.

[0006] The headphones based on this application embodiment employ a first woofer and a second woofer spaced apart on a bracket, with the sound waves from the two woofers forming a phase superposition within a first cavity. Compared to a single woofer configuration, this solution improves the mid-to-low frequency sound pressure level by up to 6dB, a magnitude far exceeding the human hearing threshold. This effectively solves the problem of low-frequency attenuation caused by sound leakage in headphones, making the bass more powerful and layered, meeting users' needs for low-frequency performance in music, movies, and other scenarios. Especially for open-back headphones, since they do not extend into the user's ear canal, their acoustic path is more open, allowing low-frequency energy to easily diffuse outwards. Traditional single-woofer designs often struggle to balance "open-back wearing" with "low-frequency performance." This application uses dual woofers to concentrate low-frequency sound waves through the first sound outlet to the ear. At the same time, it compensates for sound leakage loss through phase superposition, thereby improving the low-frequency effect of the headphones. The sound waves of the woofers in this application propagate outward from the first sound outlet, and the sound waves of the tweeters propagate outward from the second sound outlet. The high-frequency sound wave path is completely separated from the mid- and low-frequency sound wave path, avoiding distortion caused by phase interference, thereby effectively improving the overall sound quality of the headphones.

[0007] Furthermore, the vibration directions of the two subwoofers can be set in opposite directions, thus canceling out the vibrations caused by the subwoofers when playing bass. The first and second subwoofers generate mechanical vibrations in opposite directions under electromagnetic drive. The vibration energy of the two within the housing counteracts each other, reducing the overall vibration intensity of the housing and solving the ear discomfort caused by housing vibration during bass playback. Even if worn for a long time, users will not experience numbness, itching, or other discomfort in their ears due to continuous vibration, thus improving wearing comfort. Attached Figure Description

[0008] 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 utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the structure of the earphone in the first embodiment of this application. Figure 2 A schematic diagram of the structure of the earphone (with filling material) provided in the first embodiment of this application; Figure 3 for Figure 1 A schematic diagram of the structure of the sound-generating component in the diagram; Figure 4 for Figure 3 An exploded view of the sound-generating component; Figure 5This is a schematic diagram of the structure of the earphone in the second embodiment provided in this application. Figure 6 The middle image is a schematic diagram of the headphone structure in Figure 5; Figure 7 for Figure 6 A schematic diagram of the structure of the first and second sound outlets.

[0010] Explanation of icon numbers: 1. Earphone; 10. Shell; 111. First sound outlet; 112. Second sound outlet; 1121. First sub-port; 1122. Second sub-port; 120. First cavity; 130. Second cavity; 131. First sub-cavity; 132. Second sub-cavity; 140. Pressure relief hole; 150. Pressure relief chamber; 20. Sound-generating component; 210. Bracket; 211. Vent hole; 212. First tube body; 213. Second tube body; 220. First woofer; 230. Second woofer; 240. Tweeter; 250. Filler; First direction XX; Second direction YY.

[0011] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0012] To make the objectives, technical solutions and advantages of this utility model clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0013] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this invention as detailed in the appended claims.

[0014] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0016] This application provides an earphone 1. It is understood that the earphone 1 includes in-ear earphones 1 and open-ear earphones 1. In-ear earphones 1 are worn inside the external auditory canal of the user's ear, while open-ear earphones 1 are worn using other parts of the ear besides the external auditory canal. For example, they can be worn using the cymba conchae, triangular fossa, antihelix, scaphoid fossa, or a combination thereof. Depending on the wearing method, earphone 1 can also include clip-on earphones 1, ear-hook earphones 1, and neckband earphones 1, etc. Earphone 1 can also communicate with devices such as mobile phones, computers, MP3 players, and wearable audio devices.

[0017] Please see Figure 1The earphone 1 may include a housing 10 and a sound-generating component 20 disposed within the housing 10. The housing 10 has a first sound outlet 111 and a second sound outlet 112, located on the same side wall of the housing 10. The sound-generating component 20 is disposed within the housing 10, forming a first cavity 120 and a second cavity 130 with the housing 10. The first cavity 120 communicates with the first sound outlet 111, and the second cavity 130 is adjacent to and communicates with the second sound outlet 112. The sound-generating component 20 includes a bracket 210, a first woofer 220, a second woofer 230, and a tweeter 240. The bracket 210 is connected to the housing 10. The first woofer 220 and the second woofer 230 are disposed on the bracket 210 at a relative interval. The sound emitted by the woofers propagates outward through the first cavity 120 and the first sound outlet 111. In this embodiment, the first subwoofer 220 can have one subwoofer, and the second subwoofer 230 can also have one subwoofer, arranged opposite each other in pairs. Alternatively, the first subwoofer 220 can have two or more subwoofers, in which case the number of subwoofers in the second subwoofer 230 can be the same as the number of subwoofers in the first subwoofer 220. This achieves the opposite arrangement of the subwoofers in the first subwoofer 220 and the second subwoofer 230, although the number of subwoofers in the second subwoofer 230 can also differ from the number of subwoofers in the first subwoofer 220. The tweeter is mounted on the housing 10 or the bracket 210 and located within the second cavity 130. The sound emitted by the tweeter 240 propagates outward through the second sound outlet 112. The subwoofer's frequency band can be mid-low frequency (e.g., 20Hz-800kHz) sound waves, while the tweeter 240 is primarily used to output high frequency (800Hz-5kHz) sound waves. Furthermore, both the woofer and the tweeter 240 can be moving-coil loudspeakers, but they can also be condenser loudspeakers, electromagnetic loudspeakers, piezoelectric loudspeakers, etc. This application does not impose any restrictions on them.

[0018] To improve the sound quality of headphones, firstly, embodiments of this application provide a headphone 1, please refer to... Figures 1 to 4 The first woofer 220 and the second woofer 230 of the earphone 1 are spaced apart on the bracket 210, with the diaphragms of the first woofer 220 and the second woofer 230 being far apart from each other. A first cavity 120 is formed between the diaphragm of the first woofer 220 and the housing 10, and between the diaphragm of the second woofer 230 and the housing 10. The first woofer 220 and the second woofer 230 can be coaxially arranged. In some embodiments, there is a gap A between the first woofer 220 and the second woofer 230; wherein the gap A is not less than 0 mm and not greater than 3 mm.

[0019] Taking a moving-coil loudspeaker as an example, a moving-coil loudspeaker can include a frame, a spider (centering support), a magnetic circuit system, a voice coil, a surround, and a diaphragm. The frame is used to fix and support all components (diaphragm, voice coil, magnetic circuit system, etc.). The magnetic circuit system can include permanent magnets (magnets), magnetic pole pieces (washers), and magnetic guide plates (T-irons). The permanent magnets are placed on the magnetic guide plates with a gap between them. The magnetic pole pieces are placed on the permanent magnets. When the voice coil is energized, it generates a magnetic field, interacts with the permanent magnets, and moves within the gap, thereby driving the diaphragm to vibrate. The spider is used to maintain the vertical position of the voice coil in the magnetic gap, constrain the axial movement of the voice coil, and, together with the surround, position the diaphragm and provide restoring force.

[0020] In the above embodiment, the diaphragm of the first woofer 220 is positioned away from the diaphragm of the second woofer 230. The distance A is the gap between the frames of the first woofer 220 and the second woofer 230. Setting the gap between the frames of the two woofers to be no less than 0mm and no more than 3mm avoids excessive spacing between the two woofers, which would make installation difficult. Furthermore, the smaller gap between the two woofers allows the sound waves emitted by the two woofers to quickly merge within the first cavity 120, preventing a time lag between the sound waves reaching the user's ear due to excessive spacing.

[0021] In some embodiments, the support 210 is cylindrical, and the first woofer 220, the second woofer 230, and the support 210 together form a pressure relief chamber 150. The housing 10 is provided with a pressure relief hole 140, and the support 210 is provided with a vent hole 211. The pressure relief hole 140 communicates with the pressure relief chamber 150 through the vent hole 211. It is understood that when the woofer is operating, the diaphragm vibration causes air pressure fluctuations within the pressure relief chamber 150 (the air pressure changes are more significant at low frequencies with large amplitude). The pressure relief hole 140 and the vent hole 211 allow air to freely enter and exit the pressure relief chamber 150, preventing air pressure buildup from creating resistance to the diaphragm and reducing nonlinear distortion caused by air pressure resistance.

[0022] Please see Figure 2In some embodiments, the pressure relief cavity 150 is filled with a porous filler 250, the volume of which accounts for no less than 10% of the volume of the pressure relief cavity 150. Optionally, the filler 250 includes at least one of sponge, polyurethane sponge, foam, porous particles, Nbass (nanomaterial), or zeolite powder. The porous nature of the porous filler 250 can absorb the energy of high-frequency sound waves (short wavelengths), reduce the reflection and resonance of sound waves in the pressure relief cavity 150, thereby reducing the peak sound pressure level in the high-frequency range, making the high-frequency response smoother, and avoiding the "harshness" caused by excessively strong high frequencies (such as sibilance in human voices and distortion of instrument overtones). Based on the principle of "Helmholtz resonance" in loudspeakers, the reduction in volume of the second cavity 130 will increase the low-frequency resonant frequency. The filling material 250 in the pressure relief cavity 150 can balance the resonant frequency and the low-frequency extension depth, achieving "low-frequency bandwidth expansion" and providing users with a sound quality experience of "high frequencies that are not harsh, low frequencies that are deep, and an overall natural listening experience".

[0023] In some embodiments, the frames of the first woofer 220 and the second woofer 230 are spaced apart from each other along the axial direction of the support 210, and the frames of the first woofer 220, the second woofer 230, and the support 210 together form a pressure relief cavity 150. In this example, it is convenient to install the first woofer 220 and the second woofer 230 while also facilitating the formation of the pressure relief cavity 150.

[0024] Please see Figure 2 In some embodiments, the pressure relief hole 140 and the second sound outlet 112 are located on two opposite side walls of the housing 10. In this example, the question is whether the impact of pressure relief on the user's ear can be reduced, thereby improving the sound quality of the headphones.

[0025] In some embodiments, there are at least two first woofers 220 and two woofers 230, and the first woofers 220 and the second woofers 230 are arranged in pairs. In this way, the bass audio effect of the headphones 1 can be effectively improved.

[0026] In some embodiments, there is one first sound outlet 111, which is arranged in a ring and located on the outer periphery of the second sound outlet 112. In some embodiments, there are two first sound outlets 111, which are located on both sides of the second sound outlet 112. In this example, the sound output is centered on the bass and positioned on the outer periphery of the bass, or the treble is positioned on both sides of the bass, thus providing consumers with a stereo listening experience.

[0027] To improve the sound quality of the headphones, secondly, embodiments of this application also provide a headphone 1, please refer to... Figures 5 to 7The first woofer 220 and the second woofer 230 of the earphone 1 are spaced apart on the bracket 210, with the diaphragms of the first woofer 220 and the second woofer 230 close to each other; the first cavity 120 is located between the diaphragms of the first woofer 220 and the second woofer 230. In this example, there is a gap B between the woofers of the first woofer 220 and the second woofer 230; wherein the gap B is not less than 0.5 mm and not greater than 15 mm. The diaphragm of the first woofer 220, the diaphragm of the second woofer 230, and the inner wall of the bracket 210 together define the first cavity 120. The woofer frame of the first woofer 220, the woofer frame of the second woofer 230, the bracket 210, and the housing 10 together define the second cavity 130. The bracket 210 is provided with an opening that connects the first sound outlet 111 and the first cavity 120. The sound emitted by the woofers of the two woofers is propagated outward through the opening on the bracket 210 and the first sound outlet 111. The spacing B defined in this application refers to the distance between the diaphragm of the first woofer 220 and the diaphragm of the second woofer 230. Setting the spacing B to be no less than 0.5mm ensures sufficient space between the diaphragms for vibration and prevents collisions. Setting the spacing B to be no more than 15mm ensures sufficient assembly space for components such as the bracket 210 and tweeter 240, maintaining a compact overall size of the housing 10. It also prevents excessive spacing between the two woofers, which could lead to significant loss of mid-to-low frequency sound waves within the first cavity 120. Please see Figure 5 In some embodiments, the first subwoofer 220 and the second subwoofer 230 are not coaxially arranged. In this case, a first sound outlet 111 can be provided for the first subwoofer 220 and a first sound outlet 111 can be provided for the second subwoofer 230. The non-coaxial arrangement of the first subwoofer 220 and the second subwoofer 230 allows the two first sound outlets 111 to be partially offset, thus providing a wider coverage of mid-low frequency sound waves. Users can effectively capture mid-low frequency sound waves, providing users with a better acoustic experience.

[0028] Please see Figure 5 In some embodiments, the bracket 210 includes a first cylindrical body 212 and a second cylindrical body 213 connected to the first cylindrical body 212. A first woofer 220 is mounted on the first cylindrical body 212, a second woofer 230 is mounted on the second cylindrical body 213, and a tweeter 240 is located between the first cylindrical body 212 and / or the second cylindrical body 213 and the housing 10. This facilitates the installation of the tweeter 240 and ensures complete separation of the high-frequency sound wave path from the mid-to-low-frequency sound wave path, avoiding distortion caused by phase interference.

[0029] Please see Figure 5 In some embodiments, there are two tweeters 240, one of which is located between the first cylindrical body 212 and the housing 10, and the other is located between the second cylindrical body 213 and the housing 10. This increases the probability that the user's ear can capture high-frequency audio.

[0030] Please see Figure 6 In some embodiments, the second cavity 130 includes a first sub-cavity 131 and a second sub-cavity 132. The housing 10 and the first woofer 220 form the first sub-cavity 131, and the housing 10 and the second woofer 230 form the second sub-cavity 132. One tweeter 240 is located in the first sub-cavity 131, and the other tweeter 240 is located in the second sub-cavity 132. The second sound outlet 112 includes a first outlet 1121 and a second outlet 1122. The first outlet 1121 communicates with the first sub-cavity 131, and the second outlet 1122 communicates with the second sub-cavity 132.

[0031] In some embodiments, the earphone 1 is defined to have a first direction, a second direction, and a third direction that are mutually perpendicular; a first woofer 220 and a second woofer 230 are spaced apart along the first direction, and in the first direction, a first sub-port 1121 and a second sub-port 1122 are located on both sides of a first sound outlet 111; the first sound outlet 111, the first sub-port 1121, and the second sub-port 1122 are all located on the same side of the housing 10 along the third direction. It is understood that the size of the ear canal opening of each user's ear is not consistent in the height direction. Therefore, when different people wear the open-back earphone 1, it cannot be guaranteed that the first sound outlet 111 and the second sound outlet 112 are accurately aligned with the ear canal opening. However, even if there is a slight misalignment between the ear canal opening and the sound outlet, the multiple sound outlets designed in this application can effectively increase the probability of the sound outlet and the ear canal opening being aligned. Optionally, the first sub-port 1121 and the second sub-port 1122 are located on the upper and lower sides of the first sound outlet 111, which can ensure that a high-frequency sound outlet can face the ear canal opening to provide consumers with high-frequency sound.

[0032] Please see Figure 7 In some embodiments, in the first direction, the two second sound outlets 112 have a distance C between them, which is not less than 0 mm and not more than 15 mm.

[0033] Please see Figure 7 In some embodiments, in the second direction, the two second sound outlets 112 have a distance D between them, which is not less than 3 mm and not more than 45 mm.

[0034] Please see Figure 7In some embodiments, in the first direction, the second sound outlet 112 has a size M, which is not less than 0.2 mm and not more than 35 mm.

[0035] Please see Figure 7 In some embodiments, in the second direction, the second sound outlet 112 has a size K, which is not less than 1 mm and not more than 35 mm.

[0036] In some embodiments, the area of ​​the pressure relief hole 140 discussed above is not less than 1 mm². 2 and no more than 50mm 2 This application specifies that the area of ​​the pressure relief hole 140 is greater than or equal to 1 mm². 2 This ensures that the air pressure inside and outside the housing 10 quickly balances when the woofer diaphragm vibrates, preventing diaphragm movement from being obstructed due to air pressure buildup, thereby reducing distortion. The area of ​​the pressure relief hole 140 is less than or equal to 50 mm². 2 It can limit the excessive escape of low-frequency sound waves (long wavelengths) and reduce the ineffective loss of low-frequency energy.

[0037] In some embodiments, the area of ​​the first sound outlet 111 discussed above is not less than 1 mm. 2 and no more than 40mm 2 The area of ​​the second sound outlet 112 is not less than 1 mm². 2 and no more than 10mm 2 The areas of the first sound outlet 111 and the second sound outlet 112 are greater than or equal to 1 mm². 2 To avoid sound wave blockage due to excessively small aperture; the first sound outlet 111 is used to conduct low-frequency sound waves, and its area is less than or equal to 40mm². 2 The diffusion angle of the low-frequency sound outlet can be controlled to reduce the reflection interference of low-frequency sound waves on the tweeter 240, and it is also compatible with the size of the woofer, while avoiding an increase in the volume of the housing 10 due to an excessively large aperture. The second sound outlet 112 is used to conduct high-frequency sound waves, and its area is less than or equal to 10mm². 2 It can be adapted to the size of a 240 tweeter and avoids increasing the volume of the housing 10 due to excessively large aperture.

[0038] In this embodiment, dual subwoofers (a first subwoofer 220 and a second subwoofer 230) are used, and the sound waves from the two subwoofers are superimposed in phase within the first cavity 120. Compared to a single subwoofer, this solution improves the mid-to-low frequency sound pressure level by up to 6 dB, which far exceeds the human hearing threshold (typically 1 dB is perceptible). This effectively solves the low-frequency attenuation problem caused by sound leakage in the headphones 1, making the bass more powerful and layered, meeting the user's needs for low-frequency performance in music, movies, and other scenarios. In particular, for open-back headphones 1, since they do not extend into the user's ear canal, their acoustic path is more open, and low-frequency energy easily diffuses outward. Traditional single subwoofer designs often struggle to balance "open-back wearing" and "low-frequency performance." This application, through the dual subwoofers facing each other and utilizing the acoustic guidance of the first cavity 120, allows low-frequency sound waves to be more concentratedly transmitted to the ear through the first sound outlet 111. At the same time, phase superposition compensates for sound leakage loss, achieving a significant improvement in low-frequency sound pressure level. Furthermore, the vibration directions of the two subwoofers can be set in opposite directions, thus canceling out the vibrations caused by the subwoofers when playing bass. Specifically, the first subwoofer 220 and the second subwoofer 230 generate mechanical vibrations in opposite directions under electromagnetic drive. The vibration energy of the two within the housing 10 counteracts each other, reducing the overall vibration intensity of the housing 10 and solving the ear discomfort problem caused by the vibration of the housing 10 during bass playback. Even if the user wears the headphones for a long time, the ears will not experience numbness, itching, or other discomfort due to continuous vibration, thus improving wearing comfort.

[0039] 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 utility model, 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 utility model and simplifying the description, and do not indicate or imply that the device or element 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 utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An earphone, characterized in that, include: The housing is provided with a first sound outlet and a second sound outlet, the first sound outlet and the second sound outlet being located on the same side wall of the housing; A sound-generating component is disposed within the housing. The sound-generating component and the housing form a first cavity and a second cavity. The first cavity communicates with the first sound outlet, and the second cavity is adjacent to and communicates with the second sound outlet. The sound-generating component includes: A bracket is connected to the housing, and the second cavity is located on the side of the bracket near the second sound outlet; A first woofer and a second woofer are spaced apart on the bracket, with the diaphragms of the first and second woofers being far apart from each other; a first cavity is formed between the diaphragm of the first woofer and the housing, and between the diaphragm of the second woofer and the housing; and A tweeter is mounted on the housing or the bracket and located within the second cavity.

2. The headphones as described in claim 1, characterized in that, The first woofer and the second woofer are coaxially arranged.

3. The headphones as described in claim 2, characterized in that, The bracket is cylindrical, and the first woofer, the second woofer, and the bracket together form a pressure relief chamber. The housing is provided with a pressure relief hole, and the bracket is provided with a vent hole. The pressure relief hole communicates with the pressure relief chamber through the vent hole.

4. The headphones as described in claim 3, characterized in that, The pressure relief chamber is filled with a porous material, and the volume of the filling material accounts for not less than 10% of the volume of the pressure relief chamber.

5. The headphones as described in claim 3, characterized in that, The frame of the first woofer and the frame of the second woofer are arranged at intervals relative to each other along the axial direction of the support, and the frame of the first woofer, the frame of the second woofer, and the support together form the pressure relief cavity.

6. The headphones as described in claim 3, characterized in that, The pressure relief hole and the second sound outlet are located on two opposite side walls of the housing.

7. The headphones as described in claim 2, characterized in that, There are at least two of both the first and second subwoofers, and the first and second subwoofers are arranged in pairs.

8. The headphones as described in claim 1, characterized in that, The number of the first sound outlets is one, the first sound outlets are arranged in a ring shape, and the first sound outlets are located on the outer periphery of the second sound outlets; Alternatively, there may be two first sound outlets, with the two first sound outlets located on either side of the second sound outlet.

9. The headphones as described in claim 1, characterized in that, The distance between the first woofer and the second woofer is not less than 0 mm and not more than 3 mm.

10. An earphone, characterized in that, include: The housing is provided with a first sound outlet and a second sound outlet, the first sound outlet and the second sound outlet being located on the same side wall of the housing; A sound-generating component is disposed within the housing, the sound-generating component forming a first cavity, and the sound-generating component and the housing forming a second cavity. The first cavity is connected to a first sound outlet, and the second cavity is connected to a second sound outlet. The sound-generating component includes: The bracket is connected to the housing; A first subwoofer and a second subwoofer are disposed on the bracket at a distance, with the diaphragms of the first subwoofer and the second subwoofer close to each other; the first cavity is located between the diaphragms of the first subwoofer and the second subwoofer. A tweeter is mounted on the housing or the bracket and located within the second cavity.

11. The headphones as claimed in claim 10, characterized in that, The first woofer and the second woofer are not coaxially arranged.

12. The headphones as claimed in claim 10, characterized in that, The bracket includes a first cylindrical body and a second cylindrical body connected to the first cylindrical body. The first woofer is mounted on the first cylindrical body, the second woofer is mounted on the second cylindrical body, and the tweeter is located between the first cylindrical body and / or the second cylindrical body and the housing.

13. The headphones as described in claim 12, characterized in that, The number of tweeters is two, with one tweeter located between the first cylinder and the housing, and the other tweeter located between the second cylinder and the housing.

14. The headphones as claimed in claim 13, characterized in that, The second cavity includes a first sub-cavity and a second sub-cavity. The housing and the first woofer form the first sub-cavity, and the housing and the second woofer form the second sub-cavity. One tweeter is located in the first sub-cavity, and the other tweeter is located in the second sub-cavity. The second sound outlet includes a first sub-port and a second sub-port, the first sub-port being connected to the first sub-cavity, and the second sub-port being connected to the second sub-cavity.

15. The headphones as claimed in claim 14, characterized in that, The headphones are defined to have a first direction, a second direction, and a third direction that are mutually perpendicular to each other; The first subwoofer and the second subwoofer are spaced apart along a first direction, and in the first direction, the first sub-port and the second sub-port are located on both sides of the first sound outlet; The first sound outlet, the first sub-port, and the second sub-port are all located on the same side of the housing along a third direction.

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