Earphone assembly and helmet

By designing a sound-guiding channel within the helmet shell and an external sound-damping plate for the headphone assembly, the problem of sound diffusion in existing helmet headphones has been solved, achieving efficient sound transmission and safe riding.

CN223584331UActive Publication Date: 2025-11-21SHENZHEN DYNAMOTION TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202423148243.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-18
Publication Date
2025-11-21
Estimated Expiration
2034-12-18

AI Technical Summary

Technical Problem

The current helmet headphone design causes sound to diffuse into the surrounding environment, affecting sound transmission efficiency and making it difficult for cyclists to hear ambient sounds while riding, posing a safety hazard.

Method used

Design an earphone assembly comprising a housing, a speaker assembly, a sound guide channel, and a sound baffle. The housing has a receiving cavity and a sound guide channel. The sound emitted by the speaker assembly is exported through the sound guide channel and the sound outlet. The sound baffle is located on the outside of the housing to block the sound from spreading outward. The direction of sound transmission is controlled by directional acoustic technology.

Benefits of technology

It improves the directionality and penetration of sound transmission, ensuring that sound is transmitted to the human ear with high efficiency. Riders can still hear the sounds of the surrounding environment clearly while enjoying music or making calls, thus improving riding safety and user comfort.

✦ Generated by Eureka AI based on patent content.

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Abstract

The earphone assembly comprises an earphone and a sound blocking plate, the earphone comprises a shell and a loudspeaker assembly, the shell is provided with a sound outlet hole, a containing cavity and a sound guiding channel are arranged in the shell, the sound outlet hole is communicated with the containing cavity through the sound guiding channel, and the loudspeaker assembly is arranged in the containing cavity. The loudspeaker assembly is arranged in the accommodating cavity so as to make a sound which is led out through the sound guide channel and the sound outlet hole in sequence; the sound baffle plate is arranged on one side of the shell provided with the sound outlet hole and extends away from the shell. The helmet comprises a helmet body and earphone assemblies, the earphone assemblies are arranged on at least one side of the helmet body, the sound outlet holes are used for conducting sound towards human ears, and the sound baffle is located on the outer side of the helmet body. According to the earphone assembly, the directional acoustic technology is utilized to control the transmission direction of the sound, so that the earphone assembly is applied to the helmet to open the two ears and transmit the sound to the human ears at high efficiency, a user can clearly hear the sound of the surrounding environment while enjoying music or conversation, the safety in the riding process is ensured, and the user experience is improved. Moreover, discomfort such as ear expansion and ear pressing can be avoided after long-time wearing.
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Description

Technical Field

[0001] This utility model relates to the field of cycling helmet technology, and in particular to an earphone assembly and a helmet. Background Technology

[0002] Electric bicycles are widely used due to their green, economical, convenient, and fast characteristics. Wearing a helmet while riding can protect the head and reduce injury. Users often need to make or receive phone calls while riding. If one hand is holding the phone to talk while the other is holding the handlebars to control the direction, it can easily lead to accidents. Furthermore, with the continuous advancement of electronic technology, portable communication devices and multimedia mobile terminals are increasingly appearing in people's lives, making the demand for music enjoyment during cycling particularly prominent. Therefore, incorporating headphones into helmets is a popular trend and is increasingly favored by users.

[0003] Current helmet headsets are generally off-ear type, meaning they don't need to cover or insert into the rider's ears to avoid isolating them from ambient sound and causing safety accidents while riding. The drawback of this is that the sound transmitted through the headset diffuses into the surrounding environment, resulting in very low sound levels and affecting the headset's efficiency in transmitting sound to the rider's ears. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art, one of the objectives of this utility model is to provide an earphone assembly that can achieve a sound focusing effect while opening both ears, so as to control the sound to be transmitted to the human ear with high efficiency, allowing users to hear the sounds of the surrounding environment clearly while enjoying music or making calls, and ensuring safety during cycling.

[0005] The second objective of this utility model is to provide a helmet that completely covers the user's head and leaves both ears open, which not only ensures riding safety but also allows users to enjoy music or make calls, thus having multiple functions.

[0006] One of the technical solutions adopted by this utility model to solve its problem is:

[0007] An earphone assembly, comprising:

[0008] The headphones include a housing and a speaker assembly. The housing has a sound outlet and a housing cavity and a sound guide channel inside the housing. The sound outlet and the housing cavity are connected through the sound guide channel. The speaker assembly is located inside the housing cavity to emit sound that is sequentially emitted through the sound guide channel and the sound outlet.

[0009] A sound-absorbing plate is located on the side of the housing where the sound outlet is located and extends away from the housing.

[0010] Furthermore, the housing includes a detachably connected bottom shell and a top cover, which close together to form a receiving cavity in the closed space and a sound outlet is formed on the closed side. A sound baffle is provided on the side of the top cover corresponding to the sound outlet and extends away from the top cover.

[0011] Furthermore, the sound-damping plate is provided with a latching protrusion, and the upper cover is provided with a corresponding latching groove. The latching protrusion and the latching groove engage to make the sound-damping plate and the upper cover detachably connected.

[0012] Furthermore, the top cover includes a main body and a connecting part. The main body is adapted to fit the bottom shell to cover it. The connecting part is located on the side of the main body, and a slot is formed in the connecting part.

[0013] Furthermore, the bottom shell has an opening on its side to form a sound outlet, and a sound guiding channel is provided inside the opening corresponding to the sound outlet.

[0014] Furthermore, at least two reinforcing ribs are provided on the inner side of the opening. The at least two reinforcing ribs are spaced apart along the extension direction of the opening, and both reinforcing ribs extend from the opening toward the interior of the bottom shell. A sound guiding channel is formed between two adjacent reinforcing ribs, and a corresponding sound outlet is formed at the opening.

[0015] Furthermore, the bottom shell is provided with a first cover portion, and the top cover is provided with a second cover portion, the first cover portion and the second cover portion being engaged and / or inserted.

[0016] The second technical solution adopted by this utility model to solve its problem is:

[0017] A helmet includes: a helmet body and an earphone assembly, the earphone assembly being disposed on at least one side of the helmet body, a sound outlet for guiding sound toward a human ear, and a sound shield located on the outer side of the helmet body.

[0018] Furthermore, the helmet body has a mounting cavity for the headphone assembly, which is detachably mounted in the mounting cavity.

[0019] Furthermore, the helmet body includes an outer shell and an inner shell, with the outer shell fitted over the inner shell. The outer shell includes a bottom shell and a top cover that are fitted together, with the top cover and the inner shell being an integral structure.

[0020] The beneficial effects of the headphone assembly and helmet provided by this utility model are as follows:

[0021] (1) The sound guide channel is built into the housing, which can concentrate the sound emitted by the speaker assembly inside the housing so that the sound is concentrated and transmitted to the sound outlet; the sound baffle is placed on one side of the housing, which can concentrate the sound emitted from the sound outlet and prevent it from spreading to the surrounding environment, so that the sound is concentrated and transmitted to the human ear. The sound guide channel and the sound baffle work together to make the transmission of sound in a specific direction more concentrated, which helps to improve the directivity and penetration of sound transmission, thereby improving the efficiency of sound transmission to the human ear.

[0022] (2) The earphone assembly can be applied to VR headsets, AR glasses, smart glasses, sports headbands, helmets and other devices. The earphone assembly is fixed to the user's head or shoulders through these devices, while opening both ears, so that the user can still hear the sounds of the surrounding environment clearly while enjoying music, games or making calls, thereby maintaining awareness of the surrounding environment, improving safety, and reducing ear discomfort.

[0023] (3) When the helmet with the earphone assembly is in use, the helmet can cover the user's head to provide protection, while the helmet does not cover the ears, so the user can hear the sounds of the surrounding environment clearly. It not only ensures the safety of riding, but also allows the user to enjoy music or make calls, and has multiple functions. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the helmet structure in Example 2;

[0025] Figure 2 This is a schematic diagram of the headphone assembly in Example 1;

[0026] Figure 3 This is an exploded view of the headphone assembly of Example 1;

[0027] Figure 4 This is a structural schematic diagram of the helmet in Example 3;

[0028] Figure 5 This is an exploded view of the helmet in Example 3.

[0029] The meanings of the reference numerals in the attached figures are as follows:

[0030] 1. Shell; 11. Sound outlet; 12. Receiving cavity; 13. Sound guide channel; 131. Reinforcing rib; 14. Bottom shell; 141. Columnar groove; 142. Protruding edge; 15. Top cover; 151. Slot; 152. Main body; 153. Connecting part; 154. Insertion post; 155. Groove. 2. Sound baffle; 21. Snap protrusion; 3. Helmet body; 31. Outer shell; 32. Inner shell. Detailed Implementation

[0031] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0032] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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, they should not be construed as limitations on this utility model.

[0033] 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.

[0034] Example 1

[0035] See Figure 2 and Figure 3 This embodiment discloses an earphone assembly, which includes earphones and a sound-damping plate 2. The earphones include a housing 1 and a speaker assembly (not shown). The housing 1 has a sound outlet 11, and a receiving cavity 12 and a sound guiding channel 13 are provided inside the housing 1. The sound outlet 11 and the receiving cavity 12 are connected through the sound guiding channel 13. The speaker assembly is disposed within the receiving cavity 12 to emit sound that is sequentially discharged through the sound guiding channel 13 and the sound outlet 11. The sound-damping plate 2 is disposed on the side of the housing 1 with the sound outlet 11 and extends away from the housing 1. The sound-damping plate 2 is positioned on the outside of the housing 1 to prevent the sound discharged from the sound outlet 11 from diffusing into the surrounding environment.

[0036] In this embodiment, the sound guide channel 13 is built into the housing 1, which can concentrate the sound emitted by the speaker assembly inside the housing 1, so that the sound is concentrated and transmitted to the sound outlet 11; the sound baffle 2 is externally placed on one side of the housing 1, which can concentrate the sound emitted from the sound outlet 11 to prevent it from spreading to the surrounding environment, so that the sound is concentrated and transmitted to the ear. This headphone assembly uses directional acoustic technology to control the direction of sound transmission. The sound guide channel 13 and the sound baffle 2 work together to make the sound transmission in a specific direction more concentrated, which helps to improve the directivity and penetration of sound transmission, thereby improving the efficiency of sound transmission to the ear.

[0037] Therefore, this off-ear headphone component can be applied to devices such as VR headsets, AR glasses, smart glasses, sports headbands, and helmets. By fixing the headphone component to the user's head or shoulders through these devices, and opening both ears, the user can still clearly hear the sounds of the surrounding environment while enjoying music, games, or making calls, thereby maintaining awareness of the surrounding environment, improving safety, and reducing ear discomfort.

[0038] The specific structure of the headphone assembly is explained in detail below:

[0039] The housing 1 includes a detachably connected bottom shell 14 and a top cover 15. The bottom shell 14 and the top cover 15 are closed to form a receiving cavity 12 in the closed space, and a sound outlet 11 is formed on the closed side. A sound baffle 2 is provided on the side of the top cover 15 corresponding to the sound outlet 11 and extends away from the top cover 15.

[0040] The closing arrangement of the bottom shell 14 and the top cover 15 allows the housing 1 to be disassembled, facilitating the installation and removal of the speaker assembly within the housing cavity 12. The sound emitted by the speaker assembly can be focused by the sound guide channel 13 within the housing cavity 12. The extension direction of the sound guide channel 13 controls the direction of sound transmission, thus focusing the sound and transmitting it to the sound outlet 11. The sound outlet 11 is oriented towards the human ear, and the sound emitted from the sound outlet 11 is blocked and focused by the outer sound baffle 2, reducing sound diffusion into the surrounding environment and ensuring efficient sound transmission to the human ear.

[0041] The bottom shell 14 and the top cover 15 have a closing structure in which the bottom shell 14 is provided with a first closing part and the top cover 15 is provided with a second closing part, and the first closing part and the second closing part are engaged and / or inserted.

[0042] Specifically, the first cover includes a plurality of spaced columnar grooves 141 located on the bottom shell 14, and the second cover includes a plurality of spaced insertion posts 154 located on the top cover 15. The number of columnar grooves 141 and the number of insertion posts 154 are equal, and their positions correspond to each other and face each other. When the bottom shell 14 and the top cover 15 are closed, the insertion posts 154 are inserted into the corresponding columnar grooves 141, so that the bottom shell 14 can be detachably covered on the top cover 15.

[0043] Alternatively, the first cover portion includes a protruding edge 142 located on the circumferential edge of the bottom shell 14, and the second cover portion includes a groove 155 located on the circumferential edge of the top cover 15. The protruding edge 142 is adapted to the groove 155, and the positions of the protruding edge 142 and the groove 155 correspond and face each other. When the bottom shell 14 and the top cover 15 are closed, the protruding edge 142 engages in the corresponding groove 155, so that the bottom shell 14 can be detachably covered on the top cover 15.

[0044] It should be noted that the protruding edge 142 can be continuously provided on the circumferential edge of the bottom shell 14, and correspondingly, the groove 155 can be continuously provided on the circumferential edge of the top cover 15. Of course, the protruding edge 142 and the groove 155 can be provided intermittently, as long as the number is equal and the positions are matched one-to-one.

[0045] Furthermore, the first cover portion may simultaneously include a columnar groove 141 and a protruding edge 142, and the second cover portion may simultaneously include a plug-in post 154 and a groove 155. The plug-in post 154 and the columnar groove 141 are engaged, and the protruding edge 142 and the groove 155 are engaged, thereby improving the tightness of the connection between the bottom shell 14 and the top cover 15. This prevents the bottom shell 14 from separating from the top cover 15 during the use of the headphone assembly, which would cause the speaker assembly inside the housing 1 to detach from the receiving cavity and affect the normal use of the headphone assembly.

[0046] Based on the above structure, the sound baffle 2 is provided with a latching protrusion 21, and the upper cover 15 is provided with a matching latching groove 151 corresponding to the latching protrusion 21. The latching protrusion 21 and the latching groove 151 are engaged to make the sound baffle 2 and the upper cover 15 detachably connected.

[0047] The upper cover 15 has a slot 151 on the side corresponding to the sound outlet 11. The slot 151 extends from the side into the upper cover 15. The edge of the sound baffle 2 extends outward to form a protrusion 21. The protrusion 21 is engaged in the slot 151 so that the sound baffle 2 is connected to the side of the upper cover 15 corresponding to the sound outlet 11, thereby blocking the sound from the sound outlet 11 from spreading to the surrounding environment, so as to ensure that the sound is directionally and concentratedly transmitted to the human ear.

[0048] It is worth noting that after the card protrusion 21 is inserted into the card slot 151, the edge of the sound baffle 2 should abut against the side of the upper cover 15 corresponding to the sound outlet 11 to ensure the sound baffle 2's sound-blocking effect.

[0049] Furthermore, to avoid the connection between the protrusion 21 and the slot 151 affecting the sound output effect of the sound outlet 11, the connection structure between the protrusion 21 and the slot 151 is located on the side of the sound outlet 11. Specifically, the upper cover 15 includes a main body 152 and a connecting part 153. The main body 152 is adapted to fit the bottom shell 14 to cover it. The connecting part 153 is located on the side of the main body 152, and the slot 151 is formed in the connecting part 153. The main body 152 has connecting parts 153 on both opposite sides, and each connecting part 153 has a slot 151. The sound baffle 2 has two matching protrusions 21 corresponding to the two slots 151, so that the protrusions 21 are engaged in the corresponding slots 151. Furthermore, the two protrusions 21 are located at opposite ends of the edge of the sound baffle 2, so that the sound baffle 2 can be stably engaged with the upper cover 15. Meanwhile, since the sound baffle 2 is exposed and easily damaged, the detachable connection between the sound baffle 2 and the top cover 15 facilitates the replacement of the sound baffle 2 to ensure the sound focusing effect of the headphone assembly.

[0050] Based on this, since the edge of the sound-damping plate 2 abuts against the side of the upper cover 15 corresponding to the sound outlet 11, if the sound outlet 11 were located on the upper cover 15, the sound-damping plate 2 might interfere with the sound outlet. Therefore, the side of the bottom shell 14 is provided with an opening to form the sound outlet 11, and a sound-guiding channel 13 is provided inside the opening corresponding to the sound outlet 11. With the sound outlet 11 located on the side of the bottom shell 14, even if the sound-damping plate 5 completely abuts against the side of the upper cover 15, it will not interfere with the sound outlet 11, thus ensuring that the sound outlet 11 smoothly discharges sound outwards, and also ensuring a tight connection between the sound-damping plate 5 and the upper cover 15.

[0051] Specifically, at least two reinforcing ribs 131 are provided on the inner side of the opening. The at least two reinforcing ribs 131 are spaced apart along the extension direction of the opening, and both reinforcing ribs 131 extend from the opening toward the interior of the bottom shell 14. A sound guiding channel 13 is formed between two adjacent reinforcing ribs 131, and a corresponding sound outlet hole 11 is formed at the opening.

[0052] In this embodiment, multiple reinforcing ribs 131 are provided to form multiple sound guiding channels 13 and multiple sound outlets 11. The number of sound guiding channels 13 and the number of sound outlets 11 are equal and their positions correspond one-to-one. Multiple sound guiding channels 13 enable better guidance and transmission of sound within the housing 1. Each sound guiding channel 13 corresponds to one sound outlet 11, realizing directional sound output, reducing sound loss and reflection, and allowing sound to diffuse more evenly into the external space. This avoids excessive concentration or loss of sound in certain directions, making the sound sound more natural and balanced.

[0053] In addition, the reinforcing rib 131 can improve the strength of the shell 1, so as to achieve the effect of preventing drops and impacts.

[0054] Example 2

[0055] See Figure 1 This embodiment discloses a helmet, including a helmet body 3 and an earphone assembly of embodiment 1. The earphone assembly is disposed on at least one side of the helmet body 3, the sound outlet 11 is used to guide sound toward the human ear, and the sound shield 2 is located on the outside of the helmet body 3.

[0056] To ensure better sound transmission, earphone assemblies are provided on both sides of the helmet 3 near the ears. The earphones are installed in the lower part of the helmet 3 and above the ears. The sound shield 2 extends downward and blocks the outside of the sound path from the sound outlet 11 to the ears, thereby preventing the sound from the sound outlet 11 from spreading to the surrounding environment and ensuring that the sound is transmitted to the ears efficiently.

[0057] Based on this, when using a helmet with this earphone assembly, the user wears the helmet, and the helmet body 3 completely covers the user's head for protection. Furthermore, both the helmet body 3 and the earphone assembly are located above the ears, without covering them, allowing the user to clearly hear ambient sounds while riding, ensuring cycling safety. Simultaneously, the sound emitted by the speaker assembly is efficiently transmitted to the user's ears via the sound guide channel 13, sound outlet 11, and sound baffle 2, enabling the user to enjoy music or make calls, providing versatility. In addition, the off-ear design prevents discomfort such as ear pressure or swelling during prolonged wear.

[0058] In this embodiment, the helmet body 3 is a one-piece structure. The helmet body 3 has a mounting cavity for the headphone assembly, which is detachably mounted in the mounting cavity. The headphones of the headphone assembly are mounted in the mounting cavity using a snap-fit ​​method. The sound-blocking plate 2 extends downwards relative to the headphones and is positioned on the outside of the headphones, thereby achieving a directional sound-focusing effect. Furthermore, the headphone assembly is mounted on the one-piece helmet body 3, making the helmet's structure simple and easy to assemble and disassemble.

[0059] Example 3

[0060] See Figure 4 and Figure 5 This embodiment also discloses a helmet, including a helmet body 3 and an earphone assembly of embodiment 1. The earphone assembly is located on at least one side of the helmet body 3, the sound outlet 11 is used to guide sound toward the human ear, and the sound shield 2 is located on the outside of the helmet body 3.

[0061] To ensure better sound transmission, earphone assemblies are provided on both sides of the helmet 3 near the ears. The earphones are installed in the lower part of the helmet 3 and above the ears. The sound shield 2 extends downward and blocks the outside of the sound path from the sound outlet 11 to the ears, thereby preventing the sound from the sound outlet 11 from spreading to the surrounding environment and ensuring that the sound is transmitted to the ears efficiently.

[0062] Based on this, when using a helmet with this earphone assembly, the user wears the helmet, and the helmet body 3 completely covers the user's head for protection. Furthermore, both the helmet body 3 and the earphone assembly are located above the ears, without covering them, allowing the user to clearly hear ambient sounds while riding, ensuring cycling safety. Simultaneously, the sound emitted by the speaker assembly is efficiently transmitted to the user's ears via the sound guide channel 13, sound outlet 11, and sound baffle 2, enabling the user to enjoy music or make calls, providing versatility. In addition, the off-ear design prevents discomfort such as ear pressure or swelling during prolonged wear.

[0063] In this embodiment, the helmet body 3 has a split structure, including an outer shell 31 and an inner shell 32, with the outer shell 31 fitted over the inner shell 32. The outer shell 31 and the inner shell 32 can be snapped together. The helmet body 3 is designed with a double-layer structure, which can improve the protective effect of the helmet body 3.

[0064] The housing 1 includes a bottom shell 14 and a top cover 15 that are fitted together. The top cover 15 and the inner shell 32 are an integral structure. The top cover 15 of the earphone is designed as an integral structure with the housing 1. During installation, it is only necessary to install the speaker assembly in the receiving cavity 12, then close the bottom shell 14, and snap the sound baffle 2 into the corresponding slot 151, which improves the convenience of disassembling and assembling the earphone assembly.

[0065] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. An earphone assembly, characterized in that, include: The earphone includes a housing and a speaker assembly. The housing has a sound outlet and a receiving cavity and a sound guiding channel inside the housing. The sound outlet and the receiving cavity are connected through the sound guiding channel. The speaker assembly is disposed in the receiving cavity to emit sound that is sequentially discharged through the sound guiding channel and the sound outlet. A sound-damping plate is provided on the side of the housing where the sound outlet is located and extends away from the housing.

2. The headphone assembly according to claim 1, characterized in that: The housing includes a detachably connected bottom shell and a top cover, the bottom shell and the top cover being closed to form the receiving cavity in the closed space, and the sound outlet being formed on the closed side, the sound baffle being disposed on the side of the top cover corresponding to the sound outlet and extending away from the top cover.

3. The headphone assembly according to claim 2, characterized in that: The sound-damping plate has a latching protrusion, and the upper cover has a corresponding latching groove. The latching protrusion and the latching groove engage to make the sound-damping plate and the upper cover detachably connected.

4. The headphone assembly according to claim 3, characterized in that: The top cover includes a main body and a connecting part. The main body is adapted to fit the bottom shell to cover it. The connecting part is located on the side of the main body, and the slot is formed in the connecting part.

5. The headphone assembly according to claim 2, characterized in that: The bottom shell has an opening on its side to form the sound outlet, and the sound guide channel is provided inside the opening corresponding to the sound outlet.

6. The headphone assembly according to claim 5, characterized in that: At least two reinforcing ribs are provided on the inner side of the opening. The at least two reinforcing ribs are spaced apart along the extension direction of the opening, and both of the at least two reinforcing ribs extend from the opening toward the interior of the bottom shell. The sound guiding channel is formed between two adjacent reinforcing ribs, and a corresponding sound outlet is formed at the opening.

7. The headphone assembly according to claim 2, characterized in that: The bottom shell is provided with a first cover portion, and the top cover is provided with a second cover portion, wherein the first cover portion and the second cover portion are engaged and / or inserted.

8. A helmet, characterized in that, include: The helmet and the headphone assembly according to any one of claims 1-7, the headphone assembly being disposed on at least one side of the helmet, the sound outlet being for guiding sound toward the human ear, and the sound shield being located on the outer side of the helmet.

9. The helmet according to claim 8, characterized in that: The helmet body has a mounting cavity adapted to the headphone assembly, and the headphone assembly is detachably mounted in the mounting cavity.

10. The helmet according to claim 8, characterized in that: The helmet body includes an outer shell and an inner shell. The outer shell is fitted over the inner shell. The outer shell includes a bottom shell and a top cover that are fitted together. The top cover and the inner shell are an integral structure.