Sealing structure of earphone rear cavity microphone

Abstract

The utility model relates to the technical field of acoustic engineering, and discloses a sealing structure of an earphone rear cavity microphone, which comprises an ear handle body, an upper connecting block is fixedly mounted on the outer surface of the ear handle body, a rear cavity shell is fixedly mounted on the outer surface, far away from the ear handle body, of the upper connecting block, and a threaded groove is formed in the inner wall of the rear cavity shell. Through the design of the thread groove and the limiting groove, the microphone module can be kept stable after being installed, and displacement caused by vibration or other external force is reduced, so that the working stability of the microphone is improved, the sealing performance of the microphone is improved, external dust, moisture and other impurities are prevented from entering the inside of the microphone, and the service life of the microphone is prolonged. Therefore, the acoustic performance of the microphone is protected, the service life of the microphone is prolonged, meanwhile, when the microphone module needs to be disassembled, the microphone module is more convenient to disassemble by utilizing the design of the thread groove, and subsequent maintenance and replacement are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to acoustics engineering technical field especially earphone rear cavity microphone's sealing structure. BACKGROUND

[0002] With the development of miniaturization and high performance of consumer electronics, with the increasing demand of consumers for earphone portability and sound quality, the volume of earphone is continuously reduced, and the internal structure is more compact, in this case, earphone rear cavity microphone sealing structure becomes particularly important, in the miniaturization earphone, the distance between microphone and other components is closer, and it is easy to be disturbed, the sealing structure can effectively isolate external interference when the microphone is acoustically optimized, and ensure that the microphone can accurately pick up sound signals.

[0003] But in actual use, earphone rear cavity still has many defects, such as: the existing earphone rear cavity may have sound leakage due to poor sealing, when the microphone picks up sound, part of the sound may leak out from the gap between the microphone and the surrounding structure, at the same time, the microphone in the existing earphone rear cavity may move in the use process, lack of effective positioning and fixing structure, so it is necessary to design the sealing structure of earphone rear cavity microphone. UTILITY MODEL CONTENT

[0004] In order to solve the above technical problems, the utility model provides earphone rear cavity microphone's sealing structure.

[0005] The utility model discloses the following technical scheme is realized: earphone rear cavity microphone's sealing structure, including ear handle body, the outer surface fixed mounting of ear handle body has upper connecting block, the outer surface fixed mounting of upper connecting block away from ear handle body has rear cavity shell, the inner wall of rear cavity shell is equipped with screw groove.

[0006] As a further improvement of the above scheme, the material of the outer surface of the ear handle body is polycarbonate.

[0007] Through the above technical scheme, polycarbonate has good mechanical properties, such as high strength, good toughness, etc., so that the ear handle can withstand certain external force in daily use without being easily damaged, ensuring the stability of the overall structure of the earphone, and it may also have certain chemical corrosion resistance, prolonging the service life of the earphone.

[0008] As a further improvement of the above scheme, the outer surface of the rear cavity shell is provided with a microphone sound collecting groove, and the microphone sound collecting groove is arranged at the rear of the rear cavity shell.

[0009] Through the above technical scheme, the sound signal from the environment behind the user can be more effectively received, and the influence of the possible interference source (such as the sound emitted by the user himself) in front is avoided.

[0010] As a further improvement of the above scheme, the top of the inner wall of the back cavity shell is provided with an embedded card slot, which is used to connect another shell.

[0011] Through the above technical scheme, the accurate card slot design can ensure the accuracy of the connection, ensure the good cooperation between various parts, avoid the gap or looseness caused by improper connection, and help to maintain the compactness of the earphone internal structure.

[0012] As a further improvement of the above scheme, the threaded groove is arranged at the central position of the inner wall of the back cavity shell.

[0013] Through the above technical scheme, the threaded groove located in the center can make the connection more stable, reduce the risk of deformation or damage of the connecting part caused by uneven stress, ensure the integrity of the earphone internal structure, and indirectly protect the sealing structure where the microphone assembly is located.

[0014] As a further improvement of the above scheme, the inner wall of the back cavity shell is provided with a placing groove, and the placing groove is matched with the size of the appearance of the microphone module.

[0015] Through the above technical scheme, the placing groove provides a specific placement position for the microphone assembly, which helps to position the microphone assembly and prevent it from moving randomly in the earphone, so as to ensure that the microphone is always in the best working position, thereby ensuring the stability of the sound receiving effect.

[0016] As a further improvement of the above scheme, the bottom of the inner wall of the back cavity shell is provided with a limiting groove, and the limiting groove is arranged below the embedded card slot.

[0017] Compared with the prior art, the beneficial effects of the present application are as follows:

[0018] The design of the threaded groove and the limiting groove can ensure that the microphone module remains stable after installation, reduce displacement caused by vibration or other external forces, thereby improving the working stability of the microphone, helping to improve the sealing performance of the microphone, preventing foreign matters such as dust and moisture from entering the microphone, thereby protecting the acoustic performance of the microphone and prolonging the service life. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 It is a schematic diagram of the placing groove structure of the present application;

[0021] Figure 3 It is the upper connecting block structure schematic view of the utility model;

[0022] Figure 4 It is the rear cavity shell internal structure schematic view of the utility model;

[0023] Figure 5 It is the utility model Figure 4 The structure amplification schematic view of A place in the middle.

[0024] Main symbol explanation:

[0025] 1, ear handle body;2, upper connecting block;3, rear cavity shell;4, microphone sound collecting groove;5, embedded slot;6, thread groove;7, placing groove;8, limiting groove. Specific implementation

[0026] Next, in combination with the drawings and specific implementation, the utility model is described further, it needs to be explained that, under the premise of not conflicting, the following described each embodiment or each technical feature between can be combined to form new embodiment.

[0027] Embodiment:

[0028] Please combine Figures 1-5 The sealing structure of the earphone rear cavity microphone of the embodiment, including ear handle body 1, the outer surface of ear handle body 1 is fixedly installed with upper connecting block 2, the outer surface of upper connecting block 2 away from ear handle body 1 is fixedly installed with rear cavity shell 3, and the inner wall of rear cavity shell 3 is provided with thread groove 6.

[0029] The material of the outer surface of ear handle body 1 is polycarbonate.

[0030] Through the above technical scheme, the molecular structure of polycarbonate contains rigid benzene ring and flexible carbonate bond, and the special structure makes polycarbonate have higher strength and toughness, the benzene ring provides the rigidity of molecular chain, so that it can resist deformation, and the carbonate bond endows the molecular chain with certain flexibility, so that it can absorb and disperse energy, thereby improving the impact resistance of the material.

[0031] The outer surface of rear cavity shell 3 is provided with microphone sound collecting groove 4, and microphone sound collecting groove 4 is arranged at the rear of rear cavity shell 3.

[0032] Through the above technical scheme, in the use scene of earphone, the sound emitted by the user himself such as speaking, breathing and the like mainly spreads towards the front, when microphone sound collecting groove 4 is arranged at the rear of rear cavity shell 3, according to the straight-line propagation characteristics of sound, the path of the sound from the front of the user to the rear microphone sound collecting groove is relatively long, and there is a large attenuation in the propagation process.

[0033] The top of the inner wall of the rear cavity shell 3 is provided with an embedded card slot 5, which is used to connect another shell.

[0034] Through the above technical solution, the embedded card slot 5 has a specific shape and size, which is specially designed according to the connecting part of the other shell connected thereto. The connection can only be achieved when the shapes of the two parts completely match. This precise shape matching ensures the accuracy of the connection.

[0035] The threaded groove 6 is arranged at the central position of the inner wall of the rear cavity shell 3.

[0036] The inner wall of the rear cavity shell 3 is provided with a placement slot 7, which matches the size of the appearance of the microphone module.

[0037] Through the above technical solution, the placement slot 7 has a specific shape and size, which is designed according to the contour of the microphone assembly. When the microphone assembly is accurately placed in the placement slot, it forms a relatively stable acoustic coupling relationship with the structure around the placement slot. This relationship helps to optimize the acoustic performance of the microphone. For example, the structure around the placement slot can be specially designed to reduce the influence of unnecessary external acoustic reflections on the microphone, ensuring that the sound signal received by the microphone is pure and stable.

[0038] The bottom of the inner wall of the rear cavity shell 3 is provided with a limiting slot 8, which is arranged below the embedded card slot 5.

[0039] The implementation principle of the sealing structure of the earphone rear cavity microphone in the embodiment of the application is as follows: the other shell can be embedded in the rear cavity shell 3 through the embedded card slot 5, the ear handle body 1 and the upper connecting block 2 can be used to facilitate the user to hold the rear cavity shell 3, the microphone module is placed on the top of the placement slot 7, and then the microphone module is installed on the top of the placement slot 7 by using the threaded groove 6 and the limiting slot 8. This can ensure that the microphone module remains stable after installation, reduces displacement caused by vibration or other external forces, and improves the working stability of the microphone. At this time, the microphone sound collecting groove 4 can ensure that the sound is recorded to the microphone module.

[0040] The above embodiment is only a preferred embodiment of the present application, and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and replacements made by those skilled in the art on the basis of the present application are within the scope of protection of the present application.

Claims

1. A sealing structure for a microphone in a back cavity of a headphone, characterized by, Including ear handle body (1), the outer surface of the ear handle body (1) is fixedly installed with an upper connecting block (2), the outer surface of the upper connecting block (2) is fixedly installed with a rear cavity shell (3) away from the ear handle body (1), and the inner wall of the rear cavity shell (3) is provided with a threaded groove (6).

2. The earphone back cavity microphone's sealing structure of claim 1, wherein: The material of the outer surface of the ear handle body (1) is polycarbonate.

3. The earphone back cavity microphone's sealing structure of claim 1, wherein: The outer surface of the rear cavity shell (3) is provided with a microphone sound collecting groove (4), and the microphone sound collecting groove (4) is arranged at the rear of the rear cavity shell (3).

4. The earphone back cavity microphone's sealing structure of claim 3, wherein: The top of the inner wall of the rear cavity shell (3) is provided with an embedded clamping groove (5), and the embedded clamping groove (5) is used for connecting another shell.

5. The earphone back cavity microphone's sealing structure of claim 1, wherein: The threaded groove (6) is arranged at the central position of the inner wall of the rear cavity shell (3).

6. The earphone back cavity microphone's sealing structure of claim 1, wherein: The inner wall of the rear cavity shell (3) is provided with a placing groove (7), and the placing groove (7) is matched with the size of the appearance of the microphone module.

7. The earphone back cavity microphone's sealing structure according to claim 6, wherein: The bottom of the inner wall of the rear cavity shell (3) is provided with a limiting groove (8), and the limiting groove (8) is arranged below the embedded clamping groove (5).

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