Hearing protector

Abstract

The utility model discloses a listening protector which comprises two earmuffs, a head clamp and noise reduction mechanisms installed in the two earmuffs, one side of the inner wall of a noise reduction inner container is fixedly provided with an installation frame, one side of each installation frame is connected with a loudspeaker in a penetrating mode, the outer wall of each installation frame is sleeved with a sound insulation cover, the inner wall of each sound insulation cover is provided with a first vacuum groove, and the inner wall of each sound insulation cover is provided with a second vacuum groove. Sound insulation cotton is filled between the inner wall of the noise reduction liner and the outer wall of the sound insulation cover; according to the utility model, the loudspeaker in the earmuff makes a sound, the audio frequency is transmitted in the noise reduction liner, the sound insulation cover with the first vacuum groove is arranged on the rear side of the earmuff, and the sound insulation cotton is arranged between the sound insulation cover and the noise reduction liner, so that the audio frequency is effectively prevented from being lost from the rear side of the earmuff; and the noise reduction inner container and the earmuffs are internally provided with the second vacuum grooves and the third vacuum grooves respectively, so that audio loss of the loudspeaker is effectively prevented, external noise is prevented from entering to interfere the audio effect of the loudspeaker, the noise reduction effect of the hearing protector is improved, and communication among workers is not affected.

Description

Technical Field

[0001] This utility model relates to the technical field of hearing protectors, specifically to a hearing protector. Background Technology

[0002] Hearing protectors are devices placed in the external auditory canal, inside the auricle, covering the ear, or covering a large part of the head to protect the auditory organs from noise damage. They are frequently used, especially in airports and large equipment testing sites. In the use of existing hearing protectors, to ensure communication between staff, speakers and microphones are usually installed inside the hearing protector, which isolates equipment noise without affecting communication between staff.

[0003] However, existing hearing protectors are used in noisy environments. Although they can block most of the equipment noise, the sound transmission of the speaker inside the hearing protector is easily obstructed by the internal structure, which affects the audio transmission. This makes the sound heard by the staff inside the hearing protector quite noisy, and the frequency of the sound waves entering the ear is low, which affects communication between staff. In order to address this issue, this design proposes a new type of hearing protector. Utility Model Content

[0004] The purpose of this invention is to provide a hearing protector to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model proposes a hearing protector, comprising two earmuffs, a headband, and a noise reduction mechanism installed inside the two earmuffs, wherein the headband is rotatably connected between the outer walls of the two earmuffs.

[0006] The noise reduction mechanism includes a noise reduction inner liner installed inside two earcups. A mounting bracket is fixedly provided on one side of the inner wall of each noise reduction inner liner. A speaker is inserted and connected to one side of each mounting bracket. A soundproof cover is fitted on the outer wall of the mounting bracket. A first vacuum groove is formed on the inner wall of the soundproof cover. Soundproof cotton is filled between the inner wall of the noise reduction inner liner and the outer wall of the soundproof cover. A wrapping layer is fixedly provided on the edge of the inner wall of the noise reduction inner liner outside the soundproof cotton. A second vacuum groove is formed at the edge of the inner wall of the noise reduction inner liner. A third vacuum groove is formed at the edge of the inner wall of the earcups.

[0007] In one example, the inner wall of the second vacuum chamber is provided with multiple support shafts at equal intervals.

[0008] In one example, a buffer shaft is fixed at equal intervals on one side of the speaker, and multiple buffer holes are opened at equal intervals on one side of the mounting bracket.

[0009] In one example, the outer wall of each buffer shaft is interlocked with the inner wall of each buffer hole, and a spring is fitted on the outer wall of each buffer shaft, with both ends of each spring fixedly connected to one side of the speaker and one side of the mounting bracket, respectively.

[0010] In one example, a protective film is fixedly provided on one edge of the inner wall of both earcups, and a silicone filling ring is fixedly provided on one edge of the outer wall of both earcups.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting a noise reduction mechanism inside the earcups, when the hearing protector is worn, the speaker inside the earcups emits sound and the audio is transmitted in the noise reduction liner. By setting a soundproof cover with a first vacuum groove on its rear side and setting sound insulation cotton between the soundproof cover and the noise reduction liner, the audio is effectively prevented from leaking out from the rear side of the earcups. Furthermore, the noise reduction liner and the inside of the earcups are respectively provided with a second vacuum groove and a third vacuum groove, which effectively prevents the speaker audio from leaking out and isolates external noise from interfering with the speaker's audio effect, thereby improving the noise reduction effect of the hearing protector without affecting communication between staff. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the earcup of this utility model;

[0014] Figure 3 This is a schematic diagram of the noise reduction mechanism of this utility model;

[0015] Figure 4 Appendix to the specification of this utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0016] In the diagram: 1. Earmuffs; 2. Headband; 3. Noise reduction mechanism; 301. Noise reduction inner tube; 302. Mounting bracket; 303. Speaker; 304. Soundproof cover; 305. First vacuum chamber; 306. Sound insulation cotton; 307. Wrapping layer; 308. Second vacuum chamber; 309. Third vacuum chamber; 310. Support shaft; 4. Buffer shaft; 5. Buffer hole; 6. Spring; 7. Protective membrane; 8. Silicone filler ring. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-4 The present invention provides a technical solution: a hearing protector, comprising two earmuffs 1, a headband 2, and a noise reduction mechanism 3 installed inside the two earmuffs 1, wherein the headband 2 is rotatably connected between the outer walls of the two earmuffs 1.

[0019] The noise reduction mechanism 3 includes a noise reduction inner tube 301 installed inside the two ear cups 1. A mounting bracket 302 is fixedly provided on one side of the inner wall of the noise reduction inner tube 301. A speaker 303 is inserted and connected to one side of each mounting bracket 302. A sound insulation cover 304 is fitted on the outer wall of the mounting bracket 302. A first vacuum groove 305 is opened on the inner wall of the sound insulation cover 304. Sound insulation cotton 306 is filled between the inner wall of the noise reduction inner tube 301 and the outer wall of the sound insulation cover 304. A wrapping layer 307 is fixedly provided on the edge of the inner wall of the noise reduction inner tube 301 outside the sound insulation cotton 306. A second vacuum groove 308 is opened at the edge of the inner wall of the noise reduction inner tube 301. A third vacuum groove 309 is opened at the edge of the inner wall of the ear cup 1.

[0020] When in use, the two earmuffs 1 are worn on the head using the head clip 2 to cover the user's ears for sound insulation. During the sound insulation process, each earmuff 1 has a noise-canceling inner tube 301 inside. Inside the noise-canceling inner tube 301, a speaker 303 is connected through the mounting bracket 302. Staff communicate through the audio conversion of the speaker 303. When the speaker 303 emits sound, the sound is transmitted through the noise-canceling inner tube 301. Some audio is transmitted to the back of the noise-canceling inner tube 301 during transmission. Sound-absorbing cotton 306 is installed in the noise-canceling inner tube 301, and a sound-absorbing cover 304 with a first vacuum groove 305 is installed on the outside of the mounting bracket 302. This effectively isolates the audio from being transmitted from the back of the earmuff 1. In conjunction with the sound-absorbing cotton 306, the audio loss is greatly reduced, so that the audio is uniformly transmitted from the front protective membrane 7 of the earmuff 1 and enters the user's ear, reducing the audio loss of the speaker 303 and improving the noise reduction effect of the hearing protector.

[0021] Furthermore, the inner wall of the second vacuum groove 308 is fixed with multiple support shafts 310 at equal intervals, and the edge of the inner wall of the earcup 1 is provided with a third vacuum groove 309. In the future, it will not only prevent the internal audio loss, but also prevent external noise from entering. In addition, the noise-canceling inner tube 301 is filled with multiple support shafts 310 while the second vacuum groove 308 is provided, making the noise-canceling inner tube 301 more supportive and less prone to compression damage.

[0022] Furthermore, a buffer shaft 4 is fixed at equal intervals on one side edge of the speaker 303, and multiple buffer holes 5 are opened at equal intervals on one side edge of the mounting bracket 302.

[0023] The outer wall of each buffer shaft 4 is inserted and connected to the inner wall of each buffer hole 5. Each buffer shaft 4 is fitted with a spring 6 on its outer wall. The two ends of each spring 6 are fixedly connected to one side of the speaker 303 and one side of the mounting bracket 302, respectively. When the user wears the hearing protector, the two earcups 1 are hung on the ears and the ears do not press against them, thus causing the speaker 303 to be pressed. By opening buffer holes 5 on the mounting bracket 302, the speaker 303 is buffered by the buffer shaft 4 passing through the buffer hole 5 and compressing the spring 6, thus avoiding damage to the speaker 303 by compression and improving the protective performance of the hearing protector.

[0024] Furthermore, a protective film 7 is fixedly provided on one edge of the inner wall of each of the two earcups 1, and a silicone filling ring 8 is fixedly provided on one edge of the outer wall of each of the two earcups 1. The audio of the speaker 303 is filtered by the protective film 7 to improve the user's hearing comfort. At the same time, the silicone filling ring 8 is provided on the outer side of the earcup 1 so that it can be more comfortable to contact the user's ear, thus improving the overall comfort of using the hearing protector.

[0025] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0026] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A hearing protector, comprising two earmuffs (1), a headband (2), and a noise reduction mechanism (3) installed inside the two earmuffs (1), wherein the headband (2) is rotatably connected between the outer walls of the two earmuffs (1); Its features are: The noise reduction mechanism (3) includes a noise reduction inner liner (301) installed inside the two ear cups (1). A mounting bracket (302) is fixedly provided on one side of the inner wall of the noise reduction inner liner (301). A speaker (303) is inserted and connected to one side of each of the two mounting brackets (302). A soundproof cover (304) is fitted on the outer wall of the mounting bracket (302). A first vacuum groove (305) is opened on the inner wall of the soundproof cover (304). Soundproof cotton (306) is filled between the inner wall of the noise reduction inner liner (301) and the outer wall of the soundproof cover (304). A wrapping layer (307) is fixedly provided on the edge of the inner wall of the noise reduction inner liner (301) outside the soundproof cotton (306). A second vacuum groove (308) is opened at the edge of the inner wall of the noise reduction inner liner (301). A third vacuum groove (309) is opened at the edge of the inner wall of the ear cup (1).

2. The hearing protector according to claim 1, characterized in that: The inner wall of the second vacuum tank (308) is provided with multiple support shafts (310) at equal intervals.

3. A hearing protector according to claim 1, characterized in that: A buffer shaft (4) is fixed at equal intervals on one side edge of the speaker (303), and multiple buffer holes (5) are opened at equal intervals on one side edge of the mounting bracket (302).

4. A hearing protector according to claim 3, characterized in that: The outer wall of each buffer shaft (4) is inserted and connected to the inner wall of each buffer hole (5). A spring (6) is sleeved on the outer wall of each buffer shaft (4), and the two ends of each spring (6) are fixedly connected to one side of the speaker (303) and one side of the mounting bracket (302).

5. A hearing protector according to claim 1, characterized in that: A protective film (7) is fixedly provided on one edge of the inner wall of each of the two earmuffs (1), and a silicone filling ring (8) is fixedly provided on one edge of the outer wall of each of the two earmuffs (1).

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