Hearing protection structure and device based on porous earmuffs
By using a multi-hole earmuff structure, combined with noise reduction channels and ventilation ports, the earmuffs are made breathable while maintaining noise reduction capabilities, solving the problem of ear stuffiness during wear and improving wearing comfort and health.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-13
AI Technical Summary
Existing hearing protection devices can easily cause ear stuffiness and skin problems during wear, making it difficult to combine good noise reduction capabilities with breathability.
A porous earmuff structure is designed, comprising a main body, earmuffs, a sound-absorbing part, and a cavity. The earmuffs are connected to the vents through a vent. A sound-absorbing channel and sound-absorbing cotton are provided to achieve gas circulation and noise isolation. By combining the sound-absorbing channel and the vent, the noise reduction capability is maintained while the breathability is improved.
While maintaining noise reduction capabilities, the airflow channels effectively reduce stuffiness inside the earcups, preventing skin diseases and improving wearing comfort.
Smart Images
Figure CN121647897A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of hearing protection wearable devices, specifically a hearing protection structure and device based on a porous earmuff. Background Technology
[0002] Hearing protection devices are wearable devices used to protect the hearing of workers in special environments. Examples include ground staff at airports, frontline workers in factories, and workers in other noisy environments. These workers are exposed to noise pollution in their work environments and therefore need to wear hearing protection devices for extended periods.
[0003] In related technologies, noise-canceling earmuffs are commonly used for hearing protection. Workers wear earmuffs that can block out sound to adapt to and resist environmental noise. However, many workers in these environments engage in a lot of physical labor, which can cause their ears to become hot and stuffy due to sweating and other issues, potentially leading to skin diseases or other ear problems. Summary of the Invention
[0004] The purpose of this invention is to overcome the shortcomings of existing hearing protection devices, which cause ear stuffiness and illness in workers when wearing them, and to provide a hearing protection device based on a porous earmuff.
[0005] The objective of this invention is mainly achieved through the following technical solutions:
[0006] In a first aspect, this application provides a hearing protection structure based on a porous earmuff, specifically including a main body, an earmuff on one side of the main body, a sound-absorbing part between the main body and the earmuff, and the main body and the earmuff fixedly connected to both sides of the sound-absorbing part respectively.
[0007] The main body of the structure has a cavity inside, and the main body of the structure has a vent. The vent connects to the cavity, and the cavity connects to the earmuff.
[0008] Furthermore, the silencing section is equipped with several silencing channels that connect the cavity and the earcups.
[0009] Furthermore, several noise reduction channels are parallel to each other and evenly spaced.
[0010] Furthermore, the port connecting the noise-canceling channel to the earmuff is provided with an end seal, which completely covers the port. Several connecting ends are provided on the end seal, which are used to connect the noise-canceling channel and the earmuff.
[0011] Furthermore, the inner diameter of the connecting end is smaller than the height of the silencing channel.
[0012] Furthermore, the inner wall of the sound-absorbing channel is evenly covered with sound-absorbing cotton.
[0013] Furthermore, the earmuff includes a contact portion, which is fixedly connected to the noise-absorbing portion. The contact portion has a receiving cavity, the inner diameter of which gradually decreases from the noise-absorbing portion toward the side away from the main structure.
[0014] Furthermore, there are multiple vents, all of which are located on one side of the main structure.
[0015] Furthermore, it also includes several sound-absorbing fillers, which are fixedly connected to the inner wall of the cavity.
[0016] Secondly, this application provides a hearing protection device based on a perforated earmuff, specifically including two hearing protection structures based on the perforated earmuff as described in the first aspect, with a headband provided between the two hearing protection structures based on the perforated earmuff, and the two ends of the headband being fixedly connected to the hearing protection structures based on the perforated earmuff respectively.
[0017] In summary, the present invention has the following advantages compared with the prior art:
[0018] This application utilizes a cavity within the main structure and a sound-absorbing section as a spacer to continuously replace the air inside the earcups, thus eliminating stuffiness within the earcups while maintaining sufficient noise reduction capabilities. Effective airflow between the earcups and the cavity effectively expels humid air from the earcups and replaces the air within the cavity. The sound-absorbing section suppresses noise transmission from the cavity to the earcups, thereby ensuring that the noise reduction capability of the hearing protection structure also provides hearing protection. Attached Figure Description
[0019] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:
[0020] Figure 1 This is a schematic diagram of the hearing protection structure disclosed in the embodiments of this application;
[0021] Figure 2 This is a cross-sectional view of the hearing protection structure disclosed in the embodiments of this application;
[0022] Figure 3 This is a schematic diagram of the structure of the earcups and noise-absorbing parts disclosed in the embodiments of this application;
[0023] Figure 4 This is a schematic diagram of the hearing protection device disclosed in the embodiments of this application;
[0024] The reference numerals in the attached figures indicate:
[0025] 100. Headband;
[0026] 200. Connecting part;
[0027] 300. Main structural element; 310. Noise-absorbing filling;
[0028] 400, Silencing section; 410, Connecting end; 420, Silencing channel;
[0029] 500. Earcup; 510. Receptacle; 520. Contact part;
[0030] 600. Vent. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.
[0032] The following section explains a hearing protection structure based on a porous earmuff provided in this application, using a practical application scenario as an example.
[0033] In related technologies, noise pollution in the environment where people are active necessitates hearing protection. The main methods employed are wearing earplugs or hearing protection earmuffs. However, individual ears vary considerably, so some people experience excessive sweating when wearing hearing protection products. Whether using earplugs or regular earmuffs, this sweat can become trapped, potentially leading to skin problems and other issues if it remains trapped on the skin for extended periods.
[0034] Through research, the inventors discovered that the reason why hearing protection products cause sweating is that the need for noise reduction in the product design led the designers to reduce the product's breathability. This provides users with more stable noise cancellation, but the sweating problem becomes more severe.
[0035] When faced with this problem, the optimal solution for related technologies is to improve materials technology to achieve both noise reduction and breathability in products. This would ensure high hearing protection while preventing skin problems or other physical harm caused by stuffiness. However, material development is generally quite difficult, while the need for hearing protection among relevant personnel is urgent. Therefore, the inventors improved the hearing protection structure of the earmuff using porous materials, thereby achieving a certain degree of ability to both protect hearing and eliminate stuffiness.
[0036] The embodiments of this application are intended to address the issue of sweating and discomfort when using hearing protection structures in noisy environments to a certain extent, but they cannot completely eliminate the impact of noise.
[0037] Therefore, please see Figure 1As shown, this application provides a hearing protection structure based on a porous earmuff 500 in its first aspect, specifically including a structural body 300. The structural body 300, as the main load-bearing structure and main functional component of the hearing protection structure, needs to possess sufficient structural strength to ensure overall structural stability. An earmuff 500 is provided on one side of the structural body 300, and a sound-absorbing part 400 is provided between the structural body 300 and the earmuff 500. The two sides of the sound-absorbing part 400 are respectively fixedly connected to the structural body 300 and the earmuff 500. The earmuff 500 on the structural body 300 is used to directly cover the outside of the ear, thereby isolating external noise using the earmuff 500, the sound-absorbing part 400, and the structural body 300. The original structure of the earmuff 500 and the structural body 300 already possesses a certain noise isolation capability, and the noise reduction capability can be further enhanced by filling the structural body 300 and the earmuff 500 with sound-absorbing cotton. Therefore, the main structure 300 and the earcups 500 themselves can provide basic noise reduction capabilities for the hearing protection structure.
[0038] The main body 300 has a cavity inside, and a vent 600 is provided on the main body 300, connecting the cavity to the earcups 500. The cavity is connected to the outside through the vent 600, ensuring continuous gas circulation within it. However, the cavity within the main body 300 would reduce noise reduction capability, so a sound-absorbing section 400 is used to prevent noise from the cavity from being transmitted to the earcups 500. Since the cavity and earcups 500 are connected, the gas inside the cavity can circulate with the gas inside the earcups 500, improving breathability and preventing stuffiness. The amount of gas circulating between the cavity and earcups 500 needs to be strictly limited to avoid excessively reducing noise reduction capability while improving breathability.
[0039] In practical use, the external structure 300 of this embodiment can be squeezed or pressed to compress the cavity, thereby changing the air pressure inside the cavity. When the air pressure inside the cavity changes, the speed of gas flow increases, allowing for faster gas replacement within the earcups 500 without removing them. The basic structure of this embodiment effectively protects hearing through noise reduction. An airflow channel is established to address the problem of ear stuffiness and sweating, reducing stuffiness by improving airflow. Since noise transmission requires air vibration, the use of the silencing part 400 and the silencing channel 420 effectively suppresses vibration during airflow, achieving the goal of enhancing ventilation without causing uncontrolled noise reduction.
[0040] For some embodiments of this application, please refer to Figure 2As shown, the silencing section 400 is provided with several silencing channels 420, which connect the cavity and the earcups 500. The silencing channels 420 are rigid structures, and their inner walls have numerous fine perforations for sound absorption. With the entire silencing section 400 constructed of sound-insulating material, the silencing channels 420 effectively facilitate gas flow while preventing noise transmission into the earcups 500.
[0041] In some embodiments of this application, several noise-absorbing channels 420 are parallel to each other and evenly spaced. This effectively avoids the problem of unresolved stuffiness and sweating in certain areas inside the earcups 500. Because the noise-absorbing channels 420 are evenly spaced, the gas exchanged through the noise-absorbing channels 420 is also evenly distributed to all areas inside the earcups 500, thus achieving a balanced improvement in the stuffiness and sweating situation inside the earcups 500.
[0042] The sound insulation materials and sound-absorbing cotton used in the embodiments of this application are all materials that are applicable to the fields of headphones, earmuffs and so on, in order to meet the requirements of human wear.
[0043] For some embodiments of this application, please refer to Figure 3 As shown, the port of the silencing channel 420 connecting to the earmuff 500 is equipped with an end seal. The port of the silencing channel 420 is isolated by the end seal, which helps to further improve the control capability of gas flow. When the end seal completely covers the port, several connecting ends 410 are provided on the end seal, which connect the cavity and the inside of the earmuff 500. When the connecting ends 410 are used to connect the silencing channel 420 and the earmuff 500, the flow path of gas flow can be effectively adjusted by the number and position of the connecting ends 410. For example, when the noise in the application environment is low but the temperature is high, the number of connecting ends 410 can be increased to increase the gas flow; when the noise in the application environment is high and the temperature is high, the number of connecting ends 410 can be increased and the size of the connecting port of the connecting ends 410 can be reduced to reduce noise transmission while maintaining the gas flow as much as possible; when the noise in the application environment is high but the temperature is low, the number of connecting ends 410 can be reduced to improve the noise reduction capability. The specifications and quantity of the connecting terminals 410 in this embodiment can be designed differently depending on the specific environment, and no specific limitations are imposed here. It is worth noting that the changes in the specifications of the connecting terminals in this application are adjustments that can be made during product design, and do not refer to adjustability during use.
[0044] For some embodiments of this application, please refer to Figure 2As shown, the inner diameter of the connecting end 410 is smaller than the height of the noise-canceling channel 420. By reducing the inner diameter at the connecting end 410, a blockage is formed at the connecting end 410, which effectively prevents gas vibration from being transmitted into the earcups 500 without affecting the flow of gas, further reducing the loss of noise reduction capability.
[0045] In some embodiments of this application, the inner wall of the silencing channel 420 is uniformly lined with sound-absorbing cotton. The sound-absorbing cotton within the silencing channel 420 effectively enhances its ability to absorb vibrations during sound wave transmission. The silencing channel 420 is a rigid structure; when the entire silencing channel 420 is encased in sound-absorbing material, the vibration of gas within the silencing channel 420 is further reduced, meaning that the probability of noise being transmitted from the silencing channel 420 to the earmuff 500 is further reduced.
[0046] For some embodiments of this application, please refer to Figure 2 and Figure 3 As shown, the earmuff 500 includes a contact portion 520, which is used for direct contact with the human body. Therefore, the material of the contact portion 520 needs to meet the standards for contact with the human body. Furthermore, the contact portion 520 needs to fit snugly against the human skin, so the material of the contact portion 520 is flexible to prevent noise from entering through gaps between the contact portion 520 and the human body. The contact portion 520 is fixedly connected to the noise-absorbing portion 400, and a receiving cavity 510 is provided within the contact portion 520. The receiving cavity 510 is used to accommodate the human ear. The inner diameter of the receiving cavity 510 gradually decreases from the noise-absorbing portion 400 towards the side away from the main structure 300. The size variation of the receiving cavity 510 conforms to the structure of the human ear, and the closer it is to the root of the ear, the narrower the inner diameter of the receiving cavity 510 becomes. This effectively enhances the noise resistance of the human ear, thereby providing stronger hearing protection in this embodiment. The relevant technology maintains the space of the accommodating cavity 510 at a stable size, preventing the accommodating cavity 510 from narrowing and increasing the feeling of stuffiness. The accommodating cavity 510 of this application can avoid the feeling of stuffiness through the continuous replacement of internal gas, so the change in the inner diameter of the accommodating cavity 510 also enhances the noise resistance within the accommodating cavity 510.
[0047] For some embodiments of this application, please refer to Figure 1 As shown, multiple vents 600 are provided, all located on one side of the main structure 300. Positioning the vents 600 on one side of the main structure 300 effectively prevents gas convection within the cavity, thus avoiding wind noise. The multiple vents 600 also prevent problems such as the narrowing effect that cause rapid increases in flow velocity when the gas flow rate increases. This makes the overall gas flow process more controllable.
[0048] For some embodiments of this application, please refer to Figure 2 As shown, it also includes several sound-absorbing fillers 310, which are fixedly connected to the inner wall of the cavity. The main structure 300 itself contains sound-absorbing material, but noise transmission may occur inside the cavity due to gas flow or noise transmission. Setting sound-absorbing fillers 310 inside the cavity can effectively prevent sound transmission, thereby effectively maintaining the hearing protection capability of this embodiment.
[0049] Please see Figure 4 As shown, the second aspect of this application provides a hearing protection device based on a porous earmuff 500, comprising two hearing protection structures based on the porous earmuff 500 of the first aspect, with a headband 100 provided between the two hearing protection structures. The two ends of the headband 100 are fixedly connected to the hearing protection structures based on the porous earmuff 500. Because the hearing protection structure acts directly on the ear and requires a certain pressure to prevent noise from entering the ear by pressing against the surface of the body, the two hearing protection structures based on the porous earmuff 500 are fixedly connected by the headband 100, forming overall protection for both ears. The headband 100 has elasticity, thereby enabling it to exert pressure on the hearing protection structures based on the porous earmuff 500. The hearing protection structure based on the porous earmuff 500 includes a connecting part 200. The connecting part 200 is located on top of the noise-canceling part 400 and is recessed into the noise-canceling part 400. The connection is achieved by fixing the connecting part 200 to the headband. At the position of the noise-canceling part 400, the headband can effectively apply pressure to the earmuff 500, thereby making the edge of the earmuff 500 fit snugly against the human body.
[0050] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A hearing protection structure based on a porous earmuff (500), characterized in that, The device includes a main body (300), an earmuff (500) on one side of the main body (300), a noise reduction part (400) between the main body (300) and the earmuff (500), and the main body (300) and the earmuff (500) are fixedly connected to each other on both sides of the noise reduction part (400). The main body (300) has a cavity inside, and the main body (300) has a vent (600) on it. The vent (600) is connected to the cavity, and the cavity is connected to the earmuff (500).
2. The hearing protection structure based on the porous earmuff (500) according to claim 1, characterized in that, The silencing part (400) is provided with a plurality of silencing channels (420), and the silencing channels (420) connect the cavity and the earmuff (500).
3. The hearing protection structure based on the porous earmuff (500) according to claim 2, characterized in that, The silencing channels (420) are parallel to each other and evenly spaced.
4. The hearing protection structure based on the porous earmuff (500) according to claim 2 or 3, characterized in that, The port of the silencing channel (420) connecting to the earmuff (500) is provided with an end seal, the end seal completely covers the port, and a plurality of connecting ends (410) are provided on the end seal, the connecting ends (410) being used to connect the silencing channel (420) and the earmuff (500).
5. The hearing protection structure based on the porous earmuff (500) according to claim 4, characterized in that, The inner diameter of the connecting end (410) is smaller than the height of the silencing channel (420).
6. The hearing protection structure based on the porous earmuff (500) according to claim 2, characterized in that, The inner wall of the silencing channel (420) is evenly covered with silencing cotton.
7. The hearing protection structure based on the porous earmuff (500) according to claim 1, characterized in that, The earmuff (500) includes a contact portion (520) which is fixedly connected to the noise-reducing portion (400). The contact portion (520) has a receiving cavity (510) inside, and the inner diameter of the receiving cavity (510) gradually decreases from the noise-reducing portion (400) toward the side away from the main body of the structure (300).
8. The hearing protection structure based on the porous earmuff (500) according to claim 1, characterized in that, The ventilation ports (600) are provided in multiple ways, and each of the multiple ventilation ports (600) is located on one side of the main body of the structure (300).
9. The hearing protection structure based on the porous earmuff (500) according to claim 1 or 8, characterized in that, It also includes several sound-absorbing fillers (310), which are fixedly connected to the inner wall of the cavity.
10. A hearing protection device based on a porous earmuff (500), characterized in that, The invention includes two hearing protection structures based on porous earmuffs (500) as described in any one of claims 1 to 9, wherein a headband (100) is provided between the two hearing protection structures based on porous earmuffs (500), and the two ends of the headband (100) are respectively fixedly connected to the hearing protection structures based on porous earmuffs (500).