over-ear and over-ear Bluetooth headphones

Abstract

This utility model relates to the field of Bluetooth headset technology, and particularly to an earcup and a Bluetooth headset. The earcup includes a first shell, a second shell, a sound-emitting element, and a rear cover. The second shell and the first shell are connected together, forming a receiving cavity between them. The sound-emitting element is disposed within the receiving cavity. The rear cover is disposed within the receiving cavity and configured to seal the sound-emitting element within the receiving cavity. The rear cover has an outwardly protruding portion, the interior of which forms a sound cavity. The sound cavity and the sound-emitting element are disposed opposite each other for receiving sound emitted by the sound-emitting element. The Bluetooth headset includes the aforementioned earcup. The Bluetooth headset using this earcup has good sound quality and sound effects.

Description

Technical Field

[0001] This utility model relates to the field of Bluetooth headset technology, and in particular to an earcup and a Bluetooth headset. Background Technology

[0002] Most existing OWS headphones use the enclosed space formed by the upper and lower shells of the earcups as the rear acoustic chamber. The main function of the rear acoustic chamber is to adjust and improve the low-frequency range. However, if a part of the rear acoustic chamber is flat, thin, and long, then that part may generate standing waves in a certain frequency range, causing the sound quality of the headphones to deteriorate drastically. Therefore, it is necessary to improve the structure of the headphone speaker in the rear acoustic chamber to improve the sound quality and sound effects of the headphones. Utility Model Content

[0003] The main purpose of this utility model is to propose an earcup and over-ear Bluetooth headset, which aims to solve the technical problem of poor sound effect or sound quality caused by the unreasonable structural design of the speaker in the rear sound cavity of the existing headset.

[0004] To achieve the above objectives, this utility model proposes an earmuff, comprising:

[0005] First shell;

[0006] A second housing is connected to the first housing, and a receiving cavity is formed between the second housing and the first housing;

[0007] A sound-emitting body, wherein the sound-emitting body is disposed within the receiving cavity;

[0008] A rear cavity cover is disposed within the receiving cavity and configured to seal the sound-emitting body within the receiving cavity. The rear cavity cover has an outwardly oriented protrusion, the interior of which forms a sound cavity. The sound cavity and the sound-emitting body are disposed opposite to each other and are used to receive the sound emitted by the sound-emitting body.

[0009] In some embodiments, the protrusion has a columnar structure so that the sound cavity is a columnar sound cavity.

[0010] In some embodiments, the rear cavity cover is provided with a connecting groove along the circumference, the connecting groove being adapted to be filled with sealant, the sealant being used to bond the rear cavity cover to the receiving cavity.

[0011] In some embodiments, the rear cavity cover is provided with a first snap-fit ​​portion, and the receiving cavity is provided with a second snap-fit ​​portion, wherein the first snap-fit ​​portion and the second snap-fit ​​portion are adapted to snap the rear cavity cover into the receiving cavity;

[0012] A sealing gasket is provided between the first snap-fit ​​part and the second snap-fit ​​part.

[0013] In some embodiments, the cover of the rear cavity cover is provided with a first connecting hole and a second connecting hole. The first connecting hole is adapted to pass through a first pole post, and the second connecting hole is adapted to pass through a second pole post. The ends of the first pole post and the second pole post are both connected to the sound-generating body.

[0014] In some embodiments, the first housing is provided with a third snap-fit ​​portion, and the second housing is provided with a fourth snap-fit ​​portion, wherein the third snap-fit ​​portion and the fourth snap-fit ​​portion are adapted to achieve snap-fit ​​between the first housing and the second housing.

[0015] In some embodiments, the first housing is provided with a first magnetic attraction part, and the second housing is provided with a second magnetic attraction part. The first magnetic attraction part and the second magnetic attraction part are adapted to achieve a magnetic connection between the first housing and the second housing.

[0016] In some embodiments, the first housing is provided with a first threaded hole, the second housing is provided with a second threaded hole, and a connector is provided in the first threaded hole and the second threaded hole, the connector being used to achieve a fast connection between the first housing and the second housing.

[0017] In some embodiments, the outer wall of the first housing or the second housing is provided with a hanging member, which is suitable for hanging ornaments.

[0018] Correspondingly, this utility model also proposes a Bluetooth headset, comprising:

[0019] The earmuffs described in either of the above embodiments,

[0020] A connecting rod, one end of which is connected to one of the earmuffs and the other end of which is connected to the other earmuff.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] In the technical solution of this utility model, the sound-generating element can be sealed by the rear cavity cover, preventing sound leakage and other defects. This reliable sealing structure formed by the rear cavity cover ensures that the acoustic cavity formed by the protrusion is a closed and stable acoustic environment, effectively isolating external air interference and internal sound wave leakage. This airtight seal is the foundation for the stable realization of acoustic optimization effects, avoiding acoustic short circuits, low-frequency loss, or sound coloration caused by poor sealing, thereby ensuring the sound performance and sound quality of the earcups.

[0023] By designing a rear cover with an outwardly protruding portion, and forming a sound cavity inside the protrusion that is positioned opposite the sound source, a sealed rear sound cavity space of a specific shape and volume is provided for the rear of the sound source. Compared to existing planar or poorly structured rear cover designs, this structural design can more effectively control sound wave reflection, resonant frequency, and damping characteristics within the rear sound cavity. This significantly improves the low-frequency response of the sound source, reduces mid-to-high frequency distortion, and enhances the overall clarity, layering, and dynamic range of the sound, ultimately achieving a comprehensive improvement in headphone sound effects and quality.

[0024] Setting the acoustic cavity and the sound-generating body relative to each other helps guide the sound waves to reflect and dissipate in an orderly manner within the acoustic cavity. This reduces the random reflection of sound waves within the cavity, stray reflections caused by collisions with the shell or other components, and standing wave interference, further reducing sound coloration and improving the purity of the sound.

[0025] The Bluetooth headphones with the aforementioned earcups have excellent sound effects and quality, and can avoid generating noise, thereby improving the user experience. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model 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.

[0027] Figure 1 A schematic diagram of the overall structure of the earmuff provided in an embodiment of the present invention from a first-view perspective;

[0028] Figure 2 A schematic diagram of the overall structure of the earmuff provided in an embodiment of the present invention from a second perspective;

[0029] Figure 3 This is a cross-sectional view of the overall structure of the earmuff provided in an embodiment of the present invention;

[0030] Figure 4 An exploded view of the overall structure of the earmuff provided in an embodiment of this utility model from a third-person perspective;

[0031] Figure 5 An exploded view of the overall structure of the earmuff provided in an embodiment of this utility model from a fourth-person perspective;

[0032] Figure 6 This is a schematic diagram of the structure of the first shell in an earmuff provided in an embodiment of the present invention;

[0033] Figure 7This is a schematic diagram of the structure of the second shell in an earmuff provided in an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the rear cavity cover of the earmuff provided in an embodiment of the present invention from a first perspective;

[0035] Figure 9 This is a schematic diagram of the structure of the rear cavity cover of the earmuff provided in an embodiment of the present invention from a second perspective;

[0036] Figure 10 This is a schematic diagram of the overall structure of a Bluetooth headset provided in an embodiment of the present invention.

[0037] Explanation of icon numbers:

[0038] 10. Earmuffs;

[0039] 20. Over-ear Bluetooth headphones;

[0040] 100. First shell;

[0041] 110. Receiving cavity; 120. Hanging component; 130. Third snap-fit ​​part;

[0042] 200. Second shell;

[0043] 210. Fourth connecting part;

[0044] 300. Sound-producing body;

[0045] 400. Rear cavity cover;

[0046] 410. Protrusion; 420. Sound cavity; 430. Connecting groove; 440. Cover;

[0047] 441. First connecting hole; 442. Second connecting hole;

[0048] 500, connecting rod.

[0049] 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

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0051] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0052] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where A and B are simultaneously satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0053] Most existing OWS headphones use the enclosed space formed by the upper and lower shells of the earcups as the rear acoustic chamber. The main function of the rear acoustic chamber is to adjust and improve the low-frequency range. However, if a part of the rear acoustic chamber is flat, thin, and long, then that part may generate standing waves in a certain frequency range, causing the sound quality of the headphones to deteriorate drastically. Therefore, it is necessary to improve the structure of the headphone speaker in the rear acoustic chamber to improve the sound quality and sound effects of the headphones.

[0054] Based on this, in order to solve the technical problem of poor headphone sound effect or sound quality caused by the unreasonable structural design of the headphone speaker at the rear acoustic cavity 420 in the existing technology, referring to... Figures 1 to 10This utility model provides an earcup 10, which includes a first housing 100, a second housing 200, a sound-emitting element 300 (i.e., the headphone speaker), and a rear cover 400. The second housing 200 and the first housing 100 are connected together, forming a receiving cavity 110 between them. The receiving cavity 110 is used to assemble the electronic components of the headphone. The sound-emitting element 300 is disposed within the receiving cavity 110. The rear cover 400 is disposed within the receiving cavity 110 and is configured to seal the sound-emitting element 300 within the receiving cavity 110. The rear cover 400 has an outwardly protruding portion 410, and a sound cavity 420 is formed inside the protruding portion 410. The sound cavity 420 is disposed opposite to the sound-emitting element 300 and is used to receive the sound emitted by the sound-emitting element 300. For example, a sound outlet can be provided on the first housing 100 or the second housing 200. When the sound emitter 300 emits sound, part of the sound can be directly transmitted from the sound outlet to the ear so that the ear can receive the sound. Part of the sound can be transmitted into the sound cavity 420 and continuously reflected within the sound cavity 420, so that the sound emitted by the earmuff 10 is more robust and achieves the 3D surround sound effect of the earmuff 10.

[0055] Specifically, in this embodiment, the rear cavity cover 400 seals the sound-emitting element 300, preventing sound leakage and other defects. This reliable sealing structure formed by the rear cavity cover 400 ensures that the acoustic cavity 420 formed by the protrusion 410 is a closed and stable acoustic environment, effectively isolating external air interference and internal sound wave leakage. This airtight seal is fundamental to the stable realization of acoustic optimization effects, avoiding acoustic short circuits, low-frequency loss, or sound coloration caused by poor sealing, thereby ensuring the sound output and sound quality of the earcups 10.

[0056] By providing a rear cavity cover 400 with an outwardly protruding protrusion 410, and forming a sound cavity 420 opposite to the sound generator 300 inside the protrusion 410, a sealed rear sound cavity 420 space of a specific shape and volume is provided for the rear of the sound generator 300. Compared to existing planar or poorly structured rear cavity covers 400, this structural design can more effectively control the sound wave reflection, resonant frequency, and damping characteristics within the rear sound cavity 420, thereby significantly improving the low-frequency response of the sound generator 300, reducing mid-to-high frequency distortion, and enhancing the overall clarity, layering, and dynamic range of the sound, ultimately achieving an overall improvement in headphone sound effects and quality.

[0057] Setting the acoustic cavity 420 and the sound-generating body 300 opposite each other helps to guide the sound waves to be reflected and dissipated in an orderly manner within the acoustic cavity 420. This reduces the random reflection of sound waves within the housing cavity 110, stray reflections caused by collisions with the shell or other components, and standing wave interference, further reducing sound coloration and improving the purity of the sound.

[0058] In some embodiments, refer to Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9 The protrusion 410 has a columnar structure, making the acoustic cavity 420 a columnar acoustic cavity 420. Specifically, in this embodiment, the columnar acoustic cavity 420 structure has a relatively uniform cross-section and a regular sound wave propagation path. Compared with irregularly shaped or non-columnar (such as spherical, conical, etc.) acoustic cavities 420, the columnar acoustic cavity 420 structure can more effectively control and guide the reflection and propagation mode of the sound waves generated at the rear of the sound generator 300 within the acoustic cavity 420. This helps to suppress abnormal resonance peaks (standing waves) at specific frequencies (especially in the mid-to-high frequency range) and improve the dissipation characteristics (damping) of sound wave energy, making the sound frequency response curve smoother and more balanced. This effectively reduces the coloration and distortion in specific frequency bands, thereby significantly improving the clarity, detail reproduction ability, and overall sound quality purity of the sound.

[0059] In some embodiments, refer to Figure 8 The rear cavity cover 400 is provided with a connecting groove 430 around its circumference. The connecting groove 430 is suitable for filling with sealant, which is used to bond the rear cavity cover 400 to the receiving cavity 110.

[0060] Specifically, in this embodiment, when assembling the rear cavity cover 400, the connecting groove 430 of the rear cavity cover 400 is first filled with sealant (the sealant can be in solid form to prevent it from spreading and affecting the bonding effect of the rear cavity cover 400). Then, the sealant can be heated using ultrasonic technology so that it can flow evenly after melting. Finally, the melted sealant can be cooled so that it is finally bonded between the rear cavity cover 400 and the housing (the housing can be the first housing 100 or the second housing 200), thus achieving stable fixation of the rear cavity cover 400 within the receiving cavity 110.

[0061] The rear cover 400 is glued into the receiving cavity 110. On the one hand, this can improve the stability of the rear cover 400 in the receiving cavity 110, prevent the rear cover 400 from falling off the receiving cavity 110 after being impacted, and ensure the structural strength of the earmuff 10. On the other hand, it can reduce the connection gap of the rear cover 400 in the receiving cavity 110, improve the sealing of the rear cover 400 to the sound source 300, avoid sound leakage and other adverse conditions of the sound source 300, and ensure the sound output effect of the earmuff 10.

[0062] In some embodiments, the rear cover 400 is provided with a first snap-fit ​​portion, and the receiving cavity 110 is provided with a second snap-fit ​​portion. The first snap-fit ​​portion and the second snap-fit ​​portion are adapted to snap the rear cover 400 into the receiving cavity 110. For example, the first snap-fit ​​portion may be in the form of a snap-fit ​​block, and the second snap-fit ​​portion may be in the form of a snap-fit ​​groove. Alternatively, if the first snap-fit ​​portion is in the form of a snap-fit ​​groove, the second snap-fit ​​portion may be in the form of a snap-fit ​​block.

[0063] Specifically, in this embodiment, the structure in which the rear cover 400 is snapped into the receiving cavity 110 simplifies the installation steps of the rear cover 400 in the receiving cavity 110, reduces the installation difficulty of the rear cover 400 in the receiving cavity 110, and improves the installation efficiency of the rear cover 400 in the receiving cavity 110. On the other hand, it can effectively resist vibration and other conditions, ensuring that the rear cover 400 will not easily fall off from the receiving cavity 110, and improving the connection stability of the rear cover 400 in the receiving cavity 110.

[0064] Preferably, a sealing gasket is provided between the first snap-fit ​​portion and the second snap-fit ​​portion. The sealing gasket can eliminate the connection gap of the rear cover 400 in the receiving cavity 110, improve the sealing effect of the rear cover 400 on the sound-generating body 300, and ensure that the sound emitted by the sound-generating body 300 only propagates and reflects within the sealed space formed between the rear cover 400 and the housing.

[0065] In some embodiments, refer to Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9 The rear cavity cover 400 has a cover body 440 with a first connecting hole 441 and a second connecting hole 442. A first electrode post is adapted to pass through the first connecting hole 441, and a second electrode post is adapted to pass through the second connecting hole 442. The ends of both the first and second electrodes are connected to the sound generator 300. For example, the first electrode post can be a positive electrode post, and the second electrode post can be a negative electrode post. Alternatively, the first electrode post can be a negative electrode post, and the second electrode post can be a positive electrode post. Power can be supplied to the sound generator 300 through the first and second electrodes.

[0066] Specifically, in this embodiment, the first connecting hole 441 and the second connecting hole 442 serve as clearance devices, allowing the first and second poles to pass through the rear cavity cover 400 and achieve electrical connection with the sound generator 300. This structure simplifies the structural arrangement within the earcup 10 and improves the rationality of the internal structural layout. Preferably, sealing rings (made of insulating material) can be provided in the first connecting hole 441 and the second connecting hole 442 to further improve the sealing performance of the rear cavity cover 400 to the sound generator 300.

[0067] In some embodiments, refer to Figure 6 and Figure 7 The first housing 100 is provided with a third snap-fit ​​portion 130, and the second housing 200 is provided with a fourth snap-fit ​​portion 210. The third snap-fit ​​portion 130 and the fourth snap-fit ​​portion 210 are adapted to achieve snap-fit ​​between the first housing 100 and the second housing 200. For example, the third snap-fit ​​portion 130 can be in the form of a snap-fit ​​block, and the fourth snap-fit ​​portion 210 can be in the form of a snap-fit ​​groove. Alternatively, if the third snap-fit ​​portion 130 can be in the form of a snap-fit ​​groove, the fourth snap-fit ​​portion 210 can be in the form of a snap-fit ​​block.

[0068] Specifically, in this embodiment, the first housing 100 and the second housing 200 adopt a snap-fit ​​structure. On the one hand, this simplifies the installation steps of the first housing 100 and the second housing 200, reduces the installation difficulty of the first housing 100 and the second housing 200, and improves the installation efficiency of the first housing 100 and the second housing 200. On the other hand, it can improve the connection strength of the first housing 100 and the second housing 200, ensuring that the first housing 100 and the second housing 200 will not easily separate after being impacted, thereby improving the structural stability of the earmuff 10.

[0069] In some embodiments, the first housing 100 is provided with a first magnetic attraction part, and the second housing 200 is provided with a second magnetic attraction part. The first magnetic attraction part and the second magnetic attraction part are adapted to each other to realize a magnetic connection between the first housing 100 and the second housing 200.

[0070] Specifically, in this embodiment, the first housing 100 and the second housing 200 are connected by magnetic attraction. On the one hand, this saves time and effort, as the first magnetic part and the second magnetic attraction part can be brought close to each other to achieve automatic attraction between the first housing 100 and the second housing 200, which can further improve the installation accuracy and efficiency of the first housing 100 and the second housing 200. On the other hand, it can ensure that the first housing 100 and the second housing 200 achieve a non-destructive connection, so that the first housing 100 and the second housing 200 will not suffer physical damage during connection, thereby improving the structural stability of the first housing 100 and the second housing 200.

[0071] In some embodiments, the first housing 100 is provided with a first threaded hole, and the second housing 200 is provided with a second threaded hole. A connector (e.g., a bolt, screw, etc.) is inserted into the first threaded hole and the second threaded hole. The connector is used to achieve a fast connection between the first housing 100 and the second housing 200.

[0072] Specifically, in this embodiment, the first housing 100 and the second housing 200 are fastened together by a connector. On the one hand, the connection is simple and can be quickly assembled and disassembled. When assembling the first housing 100 and the second housing 200, the connector is first inserted into the first threaded hole and the second threaded hole in sequence, and then the connector is screwed on until it is tightened in the first threaded hole and the second threaded hole, thus achieving a fast connection between the first housing 100 and the second housing 200. When disassembling the first housing 100 and the second housing 200, the connector is loosened and removed from the first threaded hole and the second threaded hole. On the other hand, this can improve the connection strength between the first housing 100 and the second housing 200. Even if the earmuff 10 is dropped or impacted, the first housing 100 and the second housing 200 can still maintain a stable connection, preventing them from separating and cracking, and extending the service life of the earmuff 10.

[0073] In some embodiments, the first housing 100 and the second housing 200 may also be bonded together, that is, an adhesive layer may be provided at the connection between the first housing 100 and the second housing 200, and the adhesive layer may be heat-melted by ultrasonic technology, so that the adhesive layer can be uniformly and stably bonded to the connection between the first housing 100 and the second housing 200.

[0074] In some embodiments, refer to Figures 1 to 10 The outer wall of the first housing 100 or the second housing 200 is provided with a hanging member 120, which is suitable for hanging ornaments. For example, the hanging member 120 may include a screw and a hanging ring, with the hanging ring connected to the end of the screw. Correspondingly, the first housing 100 or the second housing 200 may have a threaded hole, through which the screw can pass to achieve the connection between the screw and the first housing 100 or the second housing 200. Ornaments, such as earrings, can be hung on the hanging ring.

[0075] Specifically, in this embodiment, by hanging ornaments on the earcups 10, users can DIY the earcups 10, improving their aesthetics and achieving personalized customization. By attaching the ornaments to the hooks 120, quick installation and removal of the ornaments from the earcups 10 is possible. When attaching ornaments to the earcups 10, simply hook the hooks on the ornaments onto the hooks 120. When removing ornaments from the earcups 10, simply remove the hooks from the hooks 120.

[0076] Correspondingly, another embodiment of this utility model also provides a Bluetooth headset 20, see reference. Figure 10The over-ear Bluetooth headset 20 includes earcups 10 as described in any of the above embodiments. The over-ear Bluetooth headset 20 also includes a connecting rod 500, one end of which is connected to one of the earcups 10, and the other end of which is connected to the other earcup 10. The connecting rod 500 has an overall arc-shaped structure, and the curvature of the connecting rod 500 matches the curvature of the human head. When a user wears the over-ear Bluetooth headset 20, one earcup 10 fits against the left ear, the other earcup 10 fits against the right ear, and the connecting rod 500 fits against the top of the user's head.

[0077] Specifically, in this embodiment, the Bluetooth headset 20 with the earcups 10 described above has good sound effects and sound quality, and can avoid generating noise, thereby improving the user experience.

[0078] Thanks to the improvements to the earcups 10 described above, the Bluetooth headset 20 of this embodiment has the same technical effects as the earcups 10 described above, which will not be repeated here.

[0079] It should be noted that other aspects of the earcups 10 and the over-ear Bluetooth headset 20 disclosed in this utility model can be found in the prior art, and will not be repeated here.

[0080] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An earmuff, characterized in that include: First shell; A second housing is connected to the first housing, and a receiving cavity is formed between the second housing and the first housing; A sound-emitting body, wherein the sound-emitting body is disposed within the receiving cavity; A rear cavity cover is disposed within the receiving cavity and configured to seal the sound-emitting body within the receiving cavity. The rear cavity cover has an outwardly oriented protrusion, the interior of which forms a sound cavity. The sound cavity and the sound-emitting body are disposed opposite to each other and are used to receive the sound emitted by the sound-emitting body.

2. The earmuff of claim 1, wherein The protrusion has a columnar structure, so that the sound cavity is a columnar sound cavity.

3. The earmuff of claim 1, wherein The rear cavity cover has a circumferential connecting groove, which is suitable for filling with sealant. The sealant is used to bond the rear cavity cover to the receiving cavity.

4. The earmuff of claim 1, wherein The rear cavity cover is provided with a first snap-fit ​​portion, and the receiving cavity is provided with a second snap-fit ​​portion. The first snap-fit ​​portion and the second snap-fit ​​portion are adapted to snap the rear cavity cover into the receiving cavity. A sealing gasket is provided between the first snap-fit ​​part and the second snap-fit ​​part.

5. The earmuff of claim 1, wherein The rear cavity cover has a first connecting hole and a second connecting hole. The first connecting hole is suitable for inserting a first pole post, and the second connecting hole is suitable for inserting a second pole post. The ends of the first pole post and the second pole post are both connected to the sound-generating body.

6. The earmuff of claim 1, wherein The first housing is provided with a third snap-fit ​​portion, and the second housing is provided with a fourth snap-fit ​​portion. The third snap-fit ​​portion and the fourth snap-fit ​​portion are adapted to achieve snap-fit ​​between the first housing and the second housing.

7. The earmuff of claim 1, wherein The first housing is provided with a first magnetic attraction part, and the second housing is provided with a second magnetic attraction part. The first magnetic attraction part and the second magnetic attraction part are adapted to achieve a magnetic connection between the first housing and the second housing.

8. The earmuff of claim 1, wherein The first housing is provided with a first threaded hole, and the second housing is provided with a second threaded hole. A connector is inserted into the first threaded hole and the second threaded hole, and the connector is used to achieve a fast connection between the first housing and the second housing.

9. The earmuff of claim 1, wherein The outer wall of the first housing or the second housing is provided with a hanging member, which is suitable for hanging ornaments.

10. A Bluetooth headset, characterized in that include: Two earmuffs as described in any one of claims 1 to 9, A connecting rod, one end of which is connected to one of the earmuffs and the other end of which is connected to the other earmuff.

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