Off-ear type loudspeaker assembly and helmet

Abstract

The utility model discloses an off-ear type horn assembly and a helmet, the off-ear type horn assembly comprises a housing and a horn, the housing is provided with a sound guide port, the housing is internally provided with an accommodating cavity and a sound guide channel, and the sound guide channel is communicated with the sound guide port and the accommodating cavity; an abutting part is arranged in the accommodating cavity; the loudspeaker is arranged in the containing cavity, the loudspeaker is provided with a sound production side, the loudspeaker abuts against the abutting part so that a sound guide interval can be formed between the sound production side and the containing cavity, and the sound guide interval is communicated with the sound guide channel. A helmet comprises a helmet body and an off-ear type loudspeaker assembly arranged on at least one side of the helmet body, and a sound guiding opening is used for guiding sound towards human ears. According to the ear-separating type loudspeaker assembly, the directional acoustic technology is adopted, the sound wave propagation angle can be controlled, the helmet can guide sound to human ears through the ear-separating type loudspeaker assembly, the helmet does not cover the human ears, a user can hear environment sound while enjoying music, and use is safer; moreover, discomfort such as ear expansion and ear pressing can be avoided after long-time wearing.

Description

Technical Field

[0001] This utility model relates to the field of helmet technology, and in particular to an off-ear horn assembly and a helmet. Background Technology

[0002] With the continuous advancement of electronic product technology, portable communication devices and multimedia mobile terminals are increasingly appearing in people's lives. The demand for calls and music appreciation is particularly prominent during cycling. Therefore, the inclusion of headphones and microphones for listening to sound in cycling equipment is a current trend and is increasingly favored by users. In the current technology, these devices are usually placed in cycling helmets for easy carrying and use.

[0003] However, traditional headphones need to cover or be inserted into the user's ears during use to ensure that the sound is focused during cycling. However, this also isolates most of the external sound, which can easily cause danger during cycling.

[0004] Therefore, there is an urgent need for an off-ear speaker assembly and a helmet to overcome the above-mentioned defects. Utility Model Content

[0005] In order to overcome at least one of the defects described in the prior art, one of the objectives of this utility model is to provide an off-ear speaker assembly that can open both ears while controlling the propagation of sound waves to the human ear, allowing cyclists to enjoy music or make calls while still being able to clearly hear the sounds of the surrounding environment, thus enhancing safety during cycling.

[0006] The second objective of this invention is to provide a helmet that completely covers the user's head while leaving both ears open, and transmits sound to the ears through a speaker assembly inside the helmet, thereby improving riding safety and offering multiple functions.

[0007] One of the technical solutions adopted by this utility model to solve its problem is:

[0008] An off-ear speaker assembly, comprising,

[0009] The housing has a sound guide port, and the housing has a receiving cavity and a sound guide channel inside the housing. The sound guide channel connects the sound guide port and the receiving cavity. The receiving cavity has a stop part inside.

[0010] A loudspeaker is disposed within the accommodating cavity. The loudspeaker has a sound-emitting side. The loudspeaker and the abutting part abut against each other to form a sound-guiding interval between the sound-emitting side and the accommodating cavity. The sound-guiding interval is connected to the sound-guiding channel.

[0011] Furthermore, the accommodating cavity includes a bottom wall and a side wall, and a step is provided on the side wall, with the sound-emitting side abutting against the step; the sound-emitting side and the bottom wall are spaced apart to form the sound-guiding interval.

[0012] Furthermore, the accommodating cavity includes a bottom wall and a side wall. The inner diameter of the side wall gradually decreases from one end away from the bottom wall to one end near the bottom wall, so that the side wall forms the abutment portion. The outer periphery of the speaker abuts against the side wall, and the sound-emitting side is spaced apart from the bottom wall to form the sound-guiding interval.

[0013] Furthermore, the housing includes a base and a cover. The base is provided with a receiving groove, and the receiving groove is provided with the receiving cavity. The cover is detachably connected to the base and is placed on the receiving cavity.

[0014] Furthermore, an opening is provided on one side of the sidewall, and the sound guiding channel is provided outside the opening; a limiting arc-shaped rib is protruding on the cover, and the limiting arc-shaped rib is correspondingly provided with the opening.

[0015] Furthermore, the horn also has a sealing side, which is flush with the end of the receiving groove away from the bottom wall.

[0016] Furthermore, the base is provided with a first snap-fit ​​portion, and the cover is provided with a second snap-fit ​​portion, the first snap-fit ​​portion and the second snap-fit ​​portion snap-fit ​​together; the outer periphery of the cover has a protrusion extending outward, the protrusion being used to drive the cover to separate from the base when subjected to external force.

[0017] Furthermore, the base is provided with a plurality of sound guiding holes, which penetrate the base and communicate with the receiving groove.

[0018] Furthermore, the housing is provided with multiple sound guiding channels, and the housing is provided with multiple sound guiding ports, with each of the multiple sound guiding ports corresponding to one of the multiple sound guiding channels.

[0019] The second technical solution adopted by this utility model to solve its problem is:

[0020] A helmet includes a helmet body and an off-ear horn assembly as described above, the off-ear horn assembly being disposed on at least one side of the helmet body, the sound inlet being used to guide sound toward a human ear.

[0021] In summary, the off-ear speaker assembly and helmet provided by this utility model have the following technical effects:

[0022] 1) Off-ear speaker components can be applied to VR headsets, AR glasses, smart glasses, sports headbands, helmets, and other devices. These devices fix the speaker to the user's head or shoulders, leaving both ears open. This allows users to enjoy music and games while remaining aware of their surroundings and reducing ear discomfort. The speaker can be used vertically. The sound-guiding intervals and channels within the speaker housing guide the sound waves from the emitting side, allowing the sound emitted laterally by the diaphragm to be redirected by the sound-guiding intervals and then propagated longitudinally through the sound-guiding channels, thus directing the sound towards the user's ears below or above the device.

[0023] 2) Since the speaker of this application can be used vertically, the speaker can use a diaphragm with a larger diameter. This results in the speaker producing a sound with more bass, which can improve sound quality, increase sound thickness and improve the balance of sound. At the same time, the vertical placement of the speaker can make full use of the longitudinal space of the helmet without taking up too much lateral space.

[0024] 3) The sound guiding channel inside the housing can be integrated with the housing itself, improving the overall integrity and aesthetics of the product, while reducing production costs and processing difficulty; the sound guiding channel built into the housing can better focus the sound, making the sound more concentrated when it propagates in a specific direction; this helps to reduce the diffusion and loss of sound, and improve the directionality and penetration of the sound.

[0025] 4) When using a helmet with this off-ear horn assembly, the helmet can protect the user's head while the helmet body does not cover the ears, allowing the user to clearly hear the sounds of the surrounding environment, thus enhancing safety during riding. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the helmet according to an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the overall structure of the off-ear speaker assembly according to an embodiment of the present utility model;

[0028] Figure 3 This is a top view of the off-ear speaker assembly according to an embodiment of the present utility model;

[0029] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0030] Figure 5 This is a schematic diagram of the disassembled structure of the outer shell according to an embodiment of the present utility model;

[0031] Figure 6 This is a schematic diagram of the base structure according to an embodiment of the present utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the cover body according to an embodiment of the present utility model.

[0033] The meanings of the reference numerals in the attached figures are as follows:

[0034] 1. Shell; 11. Sound inlet; 12. Receiving cavity; 121. Bottom wall; 122. Side wall; 13. Sound channel; 131. Reinforcing rib; 14. Abutment part; 2. Base; 21. First snap-fit ​​part; 22. Sound inlet; 3. Cover; 31. Second snap-fit ​​part; 32. Protrusion; 33. Limiting arc rib; 4. Helmet body; 5. Horn. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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.

[0038] Example 1

[0039] See Figure 2 and Figure 3 This utility model discloses an off-ear speaker assembly, which includes a housing 1 and a speaker 5. Specifically, the housing 1 is provided with a sound guide 11. (See reference...) Figure 4 and Figure 5 The housing 1 has a receiving cavity 12 and a sound guiding channel 13, and the sound guiding channel 13 connects the sound guiding port 11 and the receiving cavity 12. The receiving cavity 12 has a stop portion 14. A speaker is disposed within the receiving cavity 12, and the speaker has a sound-emitting side. The speaker and the stop portion 14 abut against each other to form a sound guiding gap between the sound-emitting side and the receiving cavity 12, and the sound guiding gap is connected to the sound guiding channel 13.

[0040] Based on this structure, the off-ear speaker assembly of this invention can be applied to devices such as VR headsets, AR glasses, smart glasses, sports headbands, and helmets. These devices fix the speaker to the user's head or shoulders, leaving both ears open, allowing the user to enjoy music and games while remaining aware of their surroundings and reducing ear discomfort. The following explanation uses the combination of the off-ear speaker assembly and a helmet as an example:

[0041] Specifically, the sound-emitting side of the speaker is the side of the diaphragm that directly faces and interacts with the air; that is, the side that directly pushes air molecules to generate sound waves when the diaphragm vibrates. When the speaker is placed inside the accommodating cavity 12, the diaphragm vibrates to generate sound waves. Since a sound-guiding space is formed between the sound-emitting side of the speaker and the accommodating cavity 12, the sound waves are initially diffused and organized in this space. After initial diffusion, the sound waves are then guided through the sound-guiding channel 13 to the sound-guiding port 11, and then directed to the ear by the sound-guiding port 11.

[0042] It should be noted that if the abutment part 14 is not provided, and there is no sound-guiding gap between the sound-emitting side of the speaker and the accommodating cavity 12, then a sound guide port 11 needs to be opened in front of the sound-emitting side of the speaker to allow the sound waves to propagate forward. When the speaker needs to propagate sound upwards or downwards, it needs to be placed horizontally to ensure that the sound-emitting side is facing upwards or downwards. However, placing the speaker horizontally will occupy a large amount of lateral space, and the installation space for some devices is limited, so a long bar speaker is used. However, the diaphragm diameter of the long bar speaker is smaller, and it emits more high-frequency sounds, resulting in poorer sound quality.

[0043] To solve the above problems, this application allows the speaker to be used vertically. By providing a stop part 14 in the accommodating cavity 12, when the speaker is installed in the accommodating cavity 12, a sound guiding interval is formed between the speaker's sound-emitting side and the accommodating cavity 12 by abutting against the stop part 14. Thus, the sound guiding interval and the sound guiding channel 13 can be used to guide the sound waves on the sound-emitting side in a different direction.

[0044] Specifically, the extension direction of the sound guide channel 13 can control the directivity of the sound. In this application, the sound guide channel 13 can be extended longitudinally, and the speaker can be placed vertically, so that the sound emitted by the diaphragm in the lateral direction can be redirected by the sound guide interval and then propagated longitudinally by the sound guide channel 13, improving the compatibility between the speaker assembly and the equipment. At the same time, the sound guide channel 13 helps to reduce the energy loss and distortion of sound during propagation, ensuring that the sound can be transmitted smoothly and evenly to the external environment.

[0045] Since the speaker of this application can be used vertically, the speaker can use a diaphragm with a larger diameter, so that the sound emitted by the speaker has more bass, which can improve the sound quality, increase the thickness of the sound and improve the listening balance.

[0046] Furthermore, the sound guiding channel 13 within the housing 1 can be integrated with the housing 1 itself, improving the product's overall integrity and aesthetics while reducing production costs and processing difficulty. The sound guiding channel 13, built into the housing 1, allows for better sound focusing, making the sound more concentrated when propagating in a specific direction; this helps reduce sound diffusion and loss, improving sound directionality and penetration. When this off-ear speaker assembly is used in conjunction with a helmet, the user can clearly hear the sound emitted by the speaker assembly even in noisy environments or while riding.

[0047] Furthermore, the accommodating cavity 12 includes a bottom wall 121 and a side wall 122, see reference. Figure 4 and Figure 5 A step is protruding on the side wall 122, and the speaker rests against the step via the sound-emitting side. The sound-emitting side and the bottom wall 121 are spaced apart to form the sound-guiding interval.

[0048] The inner diameter of the side wall 122 is the same at all points from the end closest to the bottom wall 121 to the end furthest from the bottom wall 121, and the outer diameter of the horn is adapted to the inner diameter of the side wall 122. A step is provided on the side wall 122 so that after the horn is installed in the accommodating cavity 12, the periphery of the horn's sound-emitting side can abut against the step, thus creating the sound-guiding interval between the sound-emitting side surface and the bottom wall 121.

[0049] Therefore, the sound-guiding interval formed between the sound-emitting side and the bottom wall 121 can play a role in guiding the sound, helping to control the direction of sound propagation, reducing sound scattering and reflection, making the sound more focused and directional, and improving the listening experience. At the same time, the sound-emitting side resting against the step can ensure the stability of the speaker's position within the accommodating cavity 12, making it less likely to shift due to vibration or external impact, thereby ensuring the stability and accuracy of the sound.

[0050] In other embodiments, the accommodating cavity 12 includes a bottom wall 121 and a side wall 122. The inner diameter of the side wall 122 gradually decreases from the end away from the bottom wall 121 to the end near the bottom wall 121, so that the side wall 122 forms an abutment portion 14. The outer periphery of the speaker abuts against the side wall 122, and the sound-emitting side is spaced apart from the bottom wall 121 to form the sound-guiding interval.

[0051] As the inner diameter of the sidewall 122 gradually decreases, the sound is guided during propagation, which helps to focus the sound in the narrowing direction, improving the sound's directivity and clarity. Compared to a flat sidewall 122, this design reduces sound scattering and reflection within the accommodating cavity 12, making the sound more concentrated and reducing unnecessary sound energy loss.

[0052] In addition, the gradual reduction in the inner diameter of the side wall 122 enhances the support of the accommodating cavity 12 for the speaker, improves the overall structural strength of the accommodating cavity 12, helps protect the speaker from damage by external impacts or vibrations, and maintains a stable acoustic environment.

[0053] It should be noted that this configuration also improves the flexibility of the housing 1. The accommodating cavity 12 can accommodate speakers of different sizes. Specifically, by adjusting the variation range of the inner diameter of the side wall 122 and the position of the abutment part 14, it can be ensured that the speaker can be stably installed in the accommodating cavity 12 under different sizes.

[0054] Further, see Figure 5 The housing 1 includes a base 2 and a cover 3. The base 2 has a receiving groove, and the receiving groove has the receiving cavity 12. In addition, the cover 3 is detachably connected to the base 2, and the cover 3 covers the receiving cavity 12.

[0055] Based on this structure, during assembly, the speaker's sound-emitting side can be oriented towards the receiving groove and installed on the base 2. Then, the cover 3 is connected to the base 2 and the receiving cavity 12 is sealed. Finally, the housing 1 is installed on devices such as helmets and smart glasses.

[0056] The detachable connection between the base 2 and the cover 3 makes it convenient to replace or maintain the speaker. The receiving slot is located on the base 2. After the speaker is installed inside the receiving cavity 12, a sound-guiding interval is formed between the speaker's sound-emitting side and the base 2, allowing the speaker to transmit sound through this interval. The cover 3, by sealing the receiving cavity 12, creates a certain degree of sealing, reducing sound leakage and reflection within the cavity 12, thereby optimizing acoustic performance.

[0057] Furthermore, an opening is provided on one side of the sidewall 122, and the aforementioned sound guiding channel 13 is provided outside the opening; see reference. Figure 7 The cover 3 is also provided with a limiting arc rib 33, and the limiting arc rib 33 is set to correspond to the opening of the receiving groove.

[0058] When the cover 3 is connected to the base 2, the limiting arc rib 33 extends into the upper end of the opening, so that the limiting arc rib 33 and the upper end of the side wall 122 form a complete circular groove. In this way, when the speaker is installed in the receiving groove, the limiting arc rib 33 and the upper end of the side wall 122 together surround the outer periphery of the speaker, thereby completely separating the front and rear cavities of the speaker to prevent the sound waves from interfering with and canceling each other in the front and rear directions.

[0059] Therefore, the sound emitted from the speaker's sound-emitting side, after being redirected within the sound-guiding interval, can be guided into the sound-guiding channel 13 through the opening on the side wall 122. Furthermore, in the sound-guiding channel 13, low-frequency sounds, due to their longer wavelength, are more likely to resonate and be amplified within the channel; thus, the setting of the sound-guiding channel 13 helps to improve the performance of low-frequency sounds, making the low frequencies fuller and more powerful.

[0060] Furthermore, the horn also has a cover side, and the cover side is flush with the end of the receiving groove away from the bottom wall 121.

[0061] The fact that the cover side is flush with the receiving groove can reduce sound reflection between the rear of the speaker and the receiving groove. Since such reflection can interfere with the propagation of sound and reduce sound quality, reducing reflection can make the sound purer and clearer.

[0062] Furthermore, since the side wall 122 of the accommodating cavity 12 has an opening, and the cover side of the speaker is flush with the accommodating groove, the sound emitted from the cover side of the speaker will not enter the accommodating cavity 12, so that the sound transmitted through the opening is emitted from the sound-emitting side of the speaker.

[0063] Furthermore, the base 2 is provided with a first latching part 21, and the cover 3 is provided with a second latching part 31, and the first latching part 21 and the second latching part 31 are latched together. In addition, a protrusion 32 extends outward from the outer periphery of the cover 3, and the protrusion 32 is used to drive the cover 3 to separate from the base 2 when subjected to external force.

[0064] Based on this structure, see Figure 5 and Figure 6 The first snap-fit ​​portion 21 includes a slot on the base 2 and a snap-fit ​​protrusion at the upper edge of the base 2; see reference Figure 7 The second snap-fit ​​portion 31 includes a plug-in post located on the cover 3 and a snap-fit ​​groove located at the lower edge of the cover 3. (See reference...) Figure 4 When the base 2 is connected to the cover 3, the plug is inserted into the plug groove and the snap-fit ​​protrusion is snapped into the snap-fit ​​groove.

[0065] Thus, the correct positioning of the base 2 and the cover 3 is achieved through the engagement of the snap-fit ​​protrusion and the snap-fit ​​groove, facilitating the alignment and connection of the insertion post and the insertion slot, and enabling a detachable connection between the base 2 and the cover 3. Furthermore, by applying force to the protrusion 32, the cover 3 can be moved away from the base 2, thereby allowing maintenance of the speaker or electronic module inside the housing 1.

[0066] Further, see Figure 6 The base 2 is provided with several sound guide holes 22, and the sound guide holes 22 penetrate the base 2 and are connected to the receiving groove.

[0067] Based on this structure, when the speaker is used vertically, part of the sound emitted from the speaker's sound-emitting side can be laterally exported through the sound guide hole 22 in front of the sound-emitting side, and the other part emitted from the sound-emitting side can be longitudinally exported through the sound guide channel 13 after changing direction within the sound guide interval.

[0068] Therefore, by guiding sound in both horizontal and vertical directions, the sound can be diffused more widely into the surrounding space, avoiding the problem of sound being too concentrated or missing in certain directions, thus improving the balance and listening experience of the sound. Especially when this off-ear speaker assembly is applied to a helmet, the vertically guided sound can be directed towards the ear, while the horizontally guided sound can reach the vicinity of the ear through the head, helping to create a more three-dimensional sound field effect, allowing users to experience a more realistic and richer sound experience.

[0069] Furthermore, the housing 1 is provided with multiple sound guiding channels 13, see reference. Figure 2 The housing 1 is provided with multiple sound guide ports 11, and the multiple sound guide ports 11 are configured one-to-one with multiple sound guide channels 13.

[0070] Specifically, the base 2 is provided with an arc-shaped rib, which is arranged in a circle and forms the side wall 122 of the accommodating cavity 12. The base 2 forms the bottom wall 121 of the accommodating cavity 12. There is an opening between the beginning and end of the arc-shaped rib, and multiple reinforcing ribs 131 are provided at the opening. The multiple reinforcing ribs 131 are arranged at intervals along the circumferential direction, and a sound guiding channel 13 is formed between two adjacent reinforcing ribs 131.

[0071] The multiple sound guide channels 13 enable better guidance and propagation of sound within the housing 1. Each sound guide channel 13 corresponds to a sound guide port 11, achieving 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.

[0072] Thus, the circumferential arrangement of the arc-shaped ribs forms a stable ring structure, providing good support and stability for the entire housing 1, helping to resist external impacts and vibrations, and protecting the internal speaker from damage. Furthermore, the reinforcing ribs 131 further enhance the structural strength at the opening, dispersing and bearing stress from both inside and outside the housing 1, reducing stress concentration, and preventing structural deformation or damage that may result from the opening, thereby extending the service life of the housing 1.

[0073] In addition, see Figure 6 The reinforcing rib 131 has a notch at one end near the receiving groove. When the cover 3 is connected to the base 2, the limiting arc rib 33 on the cover 3 is connected with the notch to seal the upper end of the opening and separate the front and rear cavities of the speaker.

[0074] Example 2

[0075] Unlike Embodiment 1, this embodiment discloses a helmet, see reference. Figure 1 The helmet includes a helmet body 4 and an off-ear horn assembly as described in Embodiment 1, wherein the off-ear horn assembly is disposed on at least one side of the helmet body 4, and the sound guide 11 is used to guide sound toward the human ear.

[0076] Based on this structure, when using the helmet of this application, the user can wear the helmet on their head. At this time, the off-ear speaker assembly is above the ear, and the speaker is vertically placed on at least one side of the helmet body 4. When the speaker is in use, the sound emitted from the speaker's sound-emitting side is guided and redirected through the sound-guiding interval within the housing 1 when propagating laterally, and is then longitudinally guided to the sound-guiding port 11 through the sound-guiding channel 13 within the housing 1, thereby guiding the sound towards the ear downwards.

[0077] Because the speaker can be vertically mounted, it can utilize a larger diameter diaphragm, making full use of the longitudinal space of the helmet body 4 without occupying excessive lateral space, ensuring that the shape of the helmet is not affected by the size of the speaker. Simultaneously, the larger diameter diaphragm can emit more low-frequency sounds, providing users with superior sound quality. Furthermore, when wearing the helmet, the user's ears are not covered by the helmet body 4, allowing them to clearly hear ambient sounds and enhancing safety during riding.

[0078] 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 off-ear speaker assembly, characterized in that: include, The housing has a sound guide port, and the housing has a receiving cavity and a sound guide channel inside the housing. The sound guide channel connects the sound guide port and the receiving cavity. The receiving cavity has a stop part inside. A loudspeaker is disposed within the accommodating cavity. The loudspeaker has a sound-emitting side. The loudspeaker and the abutting part abut against each other to form a sound-guiding interval between the sound-emitting side and the accommodating cavity. The sound-guiding interval is connected to the sound-guiding channel.

2. The off-ear speaker assembly according to claim 1, characterized in that: The accommodating cavity includes a bottom wall and a side wall, and a step is provided on the side wall. The sound-emitting side abuts against the step. The sound-emitting side and the bottom wall are spaced apart to form the sound-guiding interval.

3. The off-ear speaker assembly according to claim 1, characterized in that: The accommodating cavity includes a bottom wall and a side wall. The inner diameter of the side wall gradually decreases from one end away from the bottom wall to one end near the bottom wall, so that the side wall forms the abutment portion. The outer periphery of the speaker abuts against the side wall, and the sound-emitting side is spaced apart from the bottom wall to form the sound-guiding interval.

4. The off-ear speaker assembly according to claim 2 or 3, characterized in that: The housing includes a base and a cover. The base has a receiving groove and a receiving cavity inside the receiving groove. The cover is detachably connected to the base and covers the receiving cavity.

5. The off-ear speaker assembly according to claim 4, characterized in that: An opening is provided on one side of the sidewall, and the sound guiding channel is provided outside the opening; a limiting arc rib is protruding on the cover, and the limiting arc rib is provided corresponding to the opening.

6. The off-ear speaker assembly according to claim 4, characterized in that: The horn also has a cover side, which is flush with the end of the receiving groove away from the bottom wall.

7. The off-ear speaker assembly according to claim 4, characterized in that: The base is provided with a first snap-fit ​​part, and the cover is provided with a second snap-fit ​​part, and the first snap-fit ​​part snaps with the second snap-fit ​​part; the outer periphery of the cover extends outward with a protrusion, which is used to drive the cover to separate from the base when subjected to external force.

8. The off-ear speaker assembly according to claim 4, characterized in that: The base is provided with a number of sound guiding holes, which penetrate the base and communicate with the receiving groove.

9. The off-ear speaker assembly according to claim 1, characterized in that: The housing has multiple sound guiding channels inside and multiple sound guiding ports on the housing, with each of the multiple sound guiding ports corresponding to one of the multiple sound guiding channels.

10. A helmet, characterized in that: The helmet includes a helmet body and an off-ear horn assembly as described in any one of claims 1-9, the off-ear horn assembly being disposed on at least one side of the helmet body, the sound guide being used to guide sound toward the human ear.

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