Noise reduction earphone abnormal sound elimination device based on rear cavity air guide structure

Abstract

The utility model relates to the technical field of electroacoustic devices, and discloses a noise reduction earphone abnormal sound elimination device based on a rear cavity air guide structure, an internal structure is composed of a connection main body, a buckle, a sound production unit, a shell, a clamping block, a sealing ring, a baffle plate and a diaphragm, the connection main body is connected to the interior of the shell, and the buckle is connected to the top of the connection main body. According to the noise reduction earphone abnormal sound elimination device based on the rear cavity air guide structure, when a user wears an earphone and generates a pressing action, impact air pressure is formed in the front cavity due to sudden increase of ear pressure, high-speed flowing air flow is driven by pressure difference to rapidly pass through the air leakage hole and the connecting hole to reach the rear cavity, and the large-capacity space of the rear cavity provides sufficient buffering space for the air flow, so that the noise reduction effect is improved. And the buffered air flow is gradually released out of the earphone body through the exhaust hole at a stable and controllable speed, so that the instant impact of air pressure on the diaphragm is avoided, the abnormal sound of puff generated by pressing is fundamentally eliminated, and pure and interference-free sound listening experience is brought to a user.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic device technology, specifically a noise reduction headphone noise elimination device based on a rear cavity air guide structure. Background Technology

[0002] As people's demands for audio quality and user experience continue to increase, noise-canceling headphones are being used more and more widely in the market. Active noise-canceling headphones cancel out noise by generating sound waves that are out of phase with external noise, thereby achieving a noise reduction effect.

[0003] However, in actual use, when users wear noise-canceling headphones for daily commutes, exercise, office work, or study, they often encounter annoying "popping" noises. These noises are not only loud and piercing, but also worsen with head movements, slight headphone shaking, or changes in external air pressure. For example, in crowded and noisy commuting environments like subways, frequent "popping" sounds can disrupt the rhythm of listening to music or podcasts, significantly diminishing the noise-canceling function intended to isolate external noise. During exercise, head movements and changes in airflow caused by breathing can further amplify the noise, distracting the user and ruining the workout atmosphere. In office work or study scenarios, "popping" noises can interrupt concentration and affect focus. Furthermore, these noises can lead users to question the quality of the headphones, lowering product reputation and user satisfaction. While some technologies exist to address these noise issues, most fail to fundamentally meet users' demands for a high-quality audio experience, severely impacting their auditory experience and failing to meet current needs. Utility Model Content

[0004] The purpose of this invention is to provide a noise-canceling headphone noise cancellation device based on a rear cavity air guide structure, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a noise-canceling headphone noise elimination device based on a rear cavity air-conducting structure, comprising a shell, a top plate, an earplug, and an internal structure, wherein the top plate is connected to the top of the shell, the earplug is connected to the bottom of the shell, and the internal structure is disposed inside the shell.

[0006] The internal structure consists of a connecting body, a buckle, a sound-generating unit, a housing, a locking block, a sealing ring, a baffle, and a diaphragm. The connecting body is connected to the inside of the housing, the buckle is connected to the top of the connecting body, the sound-generating unit is connected to the inside of the connecting body, the housing is connected to the top of the connecting body, the locking block is connected to the side of the housing, the sealing ring is connected to the bottom of the connecting body, the baffle is connected to the bottom of the sealing ring, and the diaphragm is connected to the top of the earpiece.

[0007] Preferably, the outer shell has a through-hole for ventilation, and a rear cavity is formed between the outer shell and the connecting body. The rear cavity is connected to the ventilation hole. The rear cavity serves as a buffer cavity to temporarily store airflow and prevent air pressure from impacting the diaphragm instantly. Subsequently, the airflow is gradually released to the outside of the earphone body through the ventilation hole through the outer shell.

[0008] Preferably, the interior of the connecting body is provided with a vent hole, and a front cavity is formed between the connecting body and the diaphragm. The front cavity and the vent hole are connected. When the earphone is worn and a pressing action is performed, the front cavity forms an impact air pressure due to the sudden increase in ear pressure, and the airflow quickly enters the vent hole.

[0009] Preferably, the housing has a through-hole, which allows airflow to be introduced into the rear cavity.

[0010] Preferably, the vent hole and the connecting hole are provided correspondingly, which allows the airflow in the vent hole to be guided away through the connecting hole.

[0011] Preferably, the buckles and blocks are correspondingly arranged, which facilitates the installation of the housing on top of the connecting body.

[0012] Preferably, the baffle is connected to the top of the earplug.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When the user presses the headphones, the front cavity experiences a sudden increase in ear pressure, creating an impact air pressure. Driven by the pressure difference, these high-speed airflows quickly reach the rear cavity through the vent and connection holes. The large capacity of the rear cavity provides ample buffer space for the airflow. The buffered airflow is gradually released to the outside of the headphones through the vent at a stable and controllable speed, avoiding the instantaneous impact of air pressure on the diaphragm. This fundamentally eliminates the "popping" noise caused by pressing, bringing users a pure and interference-free listening experience. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the connecting body and the buckle structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the shell and locking block structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the sealing ring, baffle, and diaphragm structure of this utility model.

[0019] In the diagram: 1. Outer shell; 101. Vent; 2. Top plate; 3. Earplug; 4. Internal structure; 401. Connecting body; 402. Buckle; 403. Vent hole; 404. Sound unit; 405. Shell; 406. Locking block; 407. Connecting hole; 408. Sealing ring; 409. Baffle; 410. Diaphragm. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-5 This utility model provides a technical solution: a noise-canceling headphone noise elimination device based on a rear cavity air-conducting structure, including a shell 1, a top plate 2, an earplug 3, and an internal structure 4. The top plate 2 is connected to the top of the shell 1, the earplug 3 is connected to the bottom of the shell 1, and the internal structure 4 is disposed inside the shell 1.

[0022] The internal structure 4 consists of a connecting body 401, a buckle 402, a sound unit 404, a housing 405, a locking block 406, a sealing ring 408, a baffle 409, and a diaphragm 410. The connecting body 401 is connected to the inside of the housing 1. An exhaust port 101 is provided through the side of the housing 1. A rear cavity is formed between the housing 1 and the connecting body 401, and the rear cavity is connected to the exhaust port 101. This rear cavity serves as a buffer cavity to temporarily store airflow and prevent air pressure from instantly impacting the diaphragm 410. Subsequently, the airflow is gradually released to the outside of the earphone body through the exhaust port 101 provided through the side of the housing 1. The buckle 402 is connected to the top of the connecting body 401. A vent 403 is provided through the inside of the connecting body 401. A front cavity is formed between the connecting body 401 and the diaphragm 410, and the front cavity is connected to the vent 403. When the earphone is worn and a pressing action is performed, the front cavity... Due to the sudden increase in ear pressure, an impact air pressure is formed, and the airflow quickly enters the vent hole 403. The sound unit 404 is connected to the inside of the connecting body 401. The housing 405 is connected to the top of the connecting body 401. The locking block 406 is connected to the side of the housing 405. The buckle 402 and the locking block 406 are correspondingly set. This setting facilitates the installation of the housing 405 on the top of the connecting body 401. The housing 405 has a through-hole 407. The connection hole 407 can guide the airflow into the rear cavity. The vent hole 403 and the connection hole 407 are correspondingly set. This setting can guide the airflow in the vent hole 403 through the connection hole 407. The sealing ring 408 is connected to the bottom of the connecting body 401. The baffle 409 is connected to the bottom of the sealing ring 408. The baffle 409 is connected to the top of the earplug 3. The diaphragm 410 is connected to the top of the earplug 3.

[0023] When the user presses the earphone while wearing it, the front cavity experiences a sudden increase in ear pressure, creating an impact air pressure. Driven by this pressure difference, the high-speed airflow quickly enters the connection hole 407 through the pre-set vent hole 403 in the front cavity. Subsequently, the airflow is guided into the rear cavity, which, as a crucial buffer cavity, allows the incoming airflow to continuously collide and dissipate energy, gradually slowing down the airflow and temporarily containing it, thus preventing the instantaneous impact of air pressure on the diaphragm 410. After being buffered, the airflow is gradually released at a stable and controllable speed through the vent hole 101 that runs through the side of the outer shell 1. Towards the outside of the earphone, the air-guiding structure, consisting of the front cavity, vent 403, connecting hole 407, rear cavity, and exhaust hole 101, plays a crucial role. Through a tortuous path, it significantly extends the distance of air pressure transmission, allowing the airflow to continuously dissipate energy during its flow. The large capacity of the rear cavity provides ample buffer space for the airflow, enabling the orderly release of airflow. In this way, before the diaphragm 410 feels the impact, the air pressure inside the earphone has already achieved dynamic balance, fundamentally eliminating the "popping" noise caused by pressing, and bringing users a pure and interference-free listening experience.

Claims

1. A noise-canceling headphone noise cancellation device based on a rear cavity air-conducting structure, comprising a shell (1), a top plate (2), an earplug (3), and an internal structure (4), characterized in that: The top plate (2) is connected to the top of the outer shell (1), the earplug (3) is connected to the bottom of the outer shell (1), and the internal structure (4) is disposed inside the outer shell (1); The internal structure (4) consists of a connecting body (401), a buckle (402), a sound-generating unit (404), a housing (405), a locking block (406), a sealing ring (408), a baffle (409), and a diaphragm (410). The connecting body (401) is connected to the inside of the outer shell (1). The buckle (402) is connected to the top of the connecting body (401). The sound-generating unit (404) is connected to the inside of the connecting body (401). The housing (405) is connected to the top of the connecting body (401). The locking block (406) is connected to the side of the housing (405). The sealing ring (408) is connected to the bottom of the connecting body (401). The baffle (409) is connected to the bottom of the sealing ring (408). The diaphragm (410) is connected to the top of the earplug (3).

2. The noise-canceling headphone noise cancellation device based on a rear cavity air-conducting structure according to claim 1, characterized in that: The outer shell (1) has an exhaust hole (101) through it on its side. A rear cavity is formed between the outer shell (1) and the connecting body (401), and the rear cavity is connected to the exhaust hole (101).

3. The noise-canceling headphone noise cancellation device based on a rear cavity air-conducting structure according to claim 1, characterized in that: The connecting body (401) has a through-hole (403) inside, and a front cavity is formed between the connecting body (401) and the diaphragm (410), and the front cavity is connected to the vent (403).

4. The noise-canceling headphone noise cancellation device based on a rear cavity air-conducting structure according to claim 3, characterized in that: A connecting hole (407) is provided through the interior of the housing (405).

5. The noise-canceling headphone noise cancellation device based on a rear cavity air-conducting structure according to claim 4, characterized in that: The vent (403) and the connection hole (407) are provided correspondingly.

6. The noise-canceling headphone noise cancellation device based on a rear cavity air-conducting structure according to claim 1, characterized in that: The buckle (402) and the locking block (406) are respectively provided.

7. The noise-canceling headphone noise cancellation device based on a rear cavity air-conducting structure according to claim 1, characterized in that: The baffle (409) is connected to the top of the earplug (3).

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