ANC earphone receiver

Abstract

The utility model discloses an ANC earphone receiver, which relates to the technical field of ANC earphone receivers and comprises a cover, a support is fixedly mounted at the bottom of the cover, and a first tuning net is fixedly mounted at the bottom of the support. In order to ensure the performance of high low frequency, smooth curve, low distortion / high frequency ductility, ensure that the diaphragm vibrates under high power and has good rebound resilience under pressure, and ensure that the sound is clear and natural on the premise of strong bass, the compression-resistant sponge between the diaphragm and the washer can be used for preventing the diaphragm and the washer from falling off, so that the diaphragm and the washer are not prone to falling off, and the service life of the diaphragm and the washer is prolonged. The sponge has no influence on product performance, the height of the compression-resistant sponge is larger than the vibration distance of the product at the maximum volume, it can be guaranteed that the diaphragm bears the diaphragm firstly under the condition of external air pressure or direct pressure of an external object, the center of the diaphragm and the center of the voice coil cannot make contact with other components, and therefore it can be guaranteed that the diaphragm is in a normal working state all the time.

Description

Technical Field

[0001] This utility model relates to the field of ANC headset receiver technology, and in particular to an ANC headset receiver. Background Technology

[0002] ANC (Active Noise Cancellation) receivers are a crucial audio component, playing a vital role in ANC headphones. An ANC receiver typically consists of a speaker unit and noise-canceling circuitry. The speaker unit converts electrical signals into sound signals, while the noise-canceling circuitry collects ambient noise and generates sound waves with the opposite phase to the noise, thus achieving active noise cancellation. When ANC is enabled, the microphone in the receiver collects ambient noise signals and transmits them to the noise-canceling chip for processing. The noise-canceling chip analyzes the frequency and amplitude characteristics of the noise and then generates an anti-noise signal that cancels it out, which is then played back through the speaker. The anti-noise signal cancels out the ambient noise, thereby reducing the noise level perceived by the user.

[0003] Current wireless headphones are divided into in-ear and over-ear types. Over-ear headphones are approximately 28mm-50mm in size, with low power ratings ranging from 10mW to 20mW, and maximum power from 20mW to 30mW. During PNC testing and positive / negative pressure testing, the receiver of current ANC headphones may experience diaphragm sagging, causing the voice coil and diaphragm to become stuck in the magnetic gap, or the center adhesive of the voice coil and diaphragm to bond with the washer-York joint, resulting in low volume and ANC malfunction, which is inconvenient for operators. Utility Model Content

[0004] The purpose of this invention is to provide an ANC headset receiver to solve at least one of the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an ANC headset receiver, including a cover, a bracket fixedly installed at the bottom of the cover, a first tuning mesh fixedly installed at the bottom of the bracket, a PCB fixedly installed at the bottom of the bracket, a magnet disposed at the bottom of the bracket, an headset assembly disposed outside the magnet, the headset assembly including a pressure-resistant sponge fixedly installed on the top of the magnet, and a second tuning mesh fixedly installed at the bottom of the magnet.

[0006] Preferably, a diaphragm is fixedly installed on the top of the bracket, and a central adhesive is provided on the top of the bracket, with the diaphragm in contact with the central adhesive.

[0007] Preferably, a washer is provided on the top of the magnet, and voice coils are provided on both sides of the washer.

[0008] Preferably, the diaphragm is a three-layer composite, wherein the top layer is PU material, the middle layer is a damping adhesive layer, and the bottom layer is PEEK material.

[0009] Preferably, the number of the pressure-resistant sponges is two, and they are symmetrically distributed.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. The diaphragm in this utility model adopts a three-layer composite diaphragm design. The top layer of the diaphragm is made of PU material, the middle layer is a damping adhesive layer, and the bottom layer is made of PEEK material. The dome design has reinforcing ribs to ensure high low frequency, smooth curve, low distortion and good high frequency extension performance. It also ensures that the diaphragm has good resilience under high power vibration and pressure, and can also ensure clear and natural sound while maintaining strong bass.

[0012] 2. The pressure-resistant sponge between the diaphragm and the washer in this utility model has no impact on product performance. The height of the pressure-resistant sponge is greater than the vibration distance of the product at maximum volume, and it ensures that the diaphragm bears the diaphragm first under external air pressure or direct pressure from external objects. This prevents the center of the diaphragm and voice coil from contacting other components, thus ensuring the diaphragm operates normally. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a three-dimensional sectional view of the present invention;

[0015] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0016] In the diagram: 1. Cover; 2. Bracket; 3. First tuning mesh; 4. PCB; 5. Center adhesive; 6. Second tuning mesh; 7. Magnet; 8. Washer; 9. Voice coil; 10. Compression foam; 11. Diaphragm. 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] This utility model provides, for example Figure 1-3The ANC headset receiver shown includes a cover 1, with a bracket 2 fixedly mounted on the bottom of the cover 1. The bracket 2 is made of metal stamping and has an outer diameter of 28mm, a height of 2.8mm, a 2mm center hole, and edge holes for uniform ventilation. It uses two types of tuning mesh fabric for tuning to achieve a more perfect sound quality. A first tuning mesh 3 is fixedly mounted on the bottom of the bracket 2. A PCB 4 is fixedly mounted on the bottom of the bracket 2. A magnet 7 is set on the bottom of the bracket 2. An earphone assembly is set on the outside of the magnet 7. The earphone assembly includes two pressure-resistant sponges 10 fixedly mounted on the top of the magnet 7. The magnets 7 are symmetrically distributed, and the bottom of the magnet 7 is fixedly installed with a second tuning mesh 6. The anti-pressure sponge 10 ensures that the glue between the diaphragm 11 and the voice coil 9 will not stick to the gap of the magnetic circuit and the washer 8 during the positive and negative air pressure test of the ANC headphones. The anti-pressure sponge 10 between the diaphragm 11 and the washer 8 has no impact on the product performance. The height of the anti-pressure sponge 10 is greater than the vibration distance of the product at the maximum volume, and it can also ensure that the diaphragm 11 bears the pressure first when the external air pressure or the direct pressure of the external object is applied. The center of the diaphragm 11 and the voice coil 9 cannot contact other components, thus ensuring that the diaphragm 11 is in normal working condition.

[0019] Specifically, a diaphragm 11 is fixedly installed on the top of the bracket 2, and a central adhesive 5 is set on the top of the bracket 2. The diaphragm 11 is in contact with the central adhesive 5. The diaphragm 11 is made of composite diaphragm material, which has good low-frequency extension and low distortion. The special composite diaphragm and shape design adopts a three-layer composite diaphragm design. The top layer of the diaphragm is made of PU material, the middle layer is a damping adhesive layer, and the bottom layer is made of PEEK material. The dome design has reinforcing ribs to ensure high low frequency, smooth curve, low distortion and good high frequency extension performance. It also ensures that the diaphragm has good elasticity under high power vibration and pressure, and can also ensure clear and natural sound while having strong bass.

[0020] Specifically, a washer 8 is provided on the top of the magnet 7, and voice coils 9 are provided on both sides of the washer 8.

[0021] Specifically, diaphragm 11 is a three-layer composite. The top layer of diaphragm 11 is made of PU material, the middle layer is a damping adhesive layer, and the bottom layer is made of PEEK material. PEEK is polyetheretherketone, a high-temperature thermoplastic with a high glass transition temperature (143°C) and melting point (334°C). Its load heat distortion temperature is as high as 316°C. Reinforced with 30% glass fiber or carbon fiber, it can be used for extended periods at 250°C. Compared with other high-temperature resistant plastics such as PI, PPS, PTFE, and PPO, its upper limit of operating temperature exceeds that by approximately 50°C. PEEK is a high-performance special engineering plastic with excellent comprehensive properties such as high temperature resistance, wear resistance, corrosion resistance, and high strength. Its applications are very wide, and it is widely used in aerospace, automotive manufacturing, electronics, medical, and food processing. PU is an abbreviation for Polyurethane, also known as polyurethane ester.

[0022] Specifically, there are two anti-compression sponges 10, which are symmetrically distributed.

[0023] In practical implementation, the rated power of the ANC earphone receiver can reach 30mW, and the maximum power can reach 50mW. This effectively solves the problem of low power and prevents inconvenience caused by insufficient maximum volume. The product is thin, only 3mm, approaching the limit of a miniature speaker. The diaphragm 11 consists of a PEEK intermediate composite damping rubber layer plus composite PU material, with a dome design for reinforcement. This ensures high low-frequency response, a smooth curve, low distortion, and good high-frequency extension, guaranteeing excellent resilience under high power and vibration, and ensuring clear and natural sound while maintaining powerful bass.

[0024] The bracket 2 is made of metal stamping and one-piece molding process, with an outer diameter of 28MM, a height of 2.8MM, a 2MM central hole, and edge holes, which are uniformly breathable. It also uses two types of tuning mesh cloth to make the sound quality more perfect.

[0025] Diaphragm 11 is made of composite diaphragm material, which has good low-frequency extension and low distortion. The special composite diaphragm and shape design adopt a three-layer composite diaphragm design. The top layer of the diaphragm is made of PU material, the middle layer is a damping rubber layer, and the bottom layer is made of PEEK material. The dome design has reinforcing ribs to ensure high low-frequency performance, smooth curve, low distortion and good high-frequency extension. It also ensures that the diaphragm has good elasticity under high power vibration and pressure, and can also ensure clear and natural sound while having powerful bass.

[0026] The newly designed ANC headphone receiver incorporates a pressure-resistant sponge 10 between the receiver diaphragm 11 and the washer 8 in the magnetic circuit. This ensures that during positive and negative air pressure tests of the ANC headphone, the adhesive between the diaphragm 11 and the voice coil 9 will not stick to the gap in the magnetic circuit or the washer 8. The pressure-resistant sponge 10 between the diaphragm 11 and the washer 8 does not affect product performance. The height of the pressure-resistant sponge 10 is greater than the product's vibration distance at maximum volume, ensuring that the diaphragm 11 can withstand external air pressure or direct pressure from external objects. The center of circle 9 cannot contact other components, thus ensuring that diaphragm 11 is in normal working condition. This invention effectively improves the maximum power of wireless earphone receiver products from 10MW to 50mW. This invention adopts a new cover 1 with special ventilation holes and locking positions, which facilitates assembly and improves sound quality. While ensuring sound quality, it is easy to assemble. The pressure-resistant sponge 10 structure ensures the normal displacement of diaphragm 11 under the extreme pressure of external air pressure, and glue cannot stick to other components.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An ANC headset receiver, comprising a cover (1), characterized in that: A bracket (2) is fixedly installed at the bottom of the cover (1), a first tuning mesh (3) is fixedly installed at the bottom of the bracket (2), a PCB (4) is fixedly installed at the bottom of the bracket (2), a magnet (7) is provided at the bottom of the bracket (2), an earphone assembly is provided on the outside of the magnet (7), the earphone assembly includes a pressure-resistant sponge (10) fixedly installed on the top of the magnet (7), and a second tuning mesh (6) is fixedly installed at the bottom of the magnet (7).

2. The ANC headset receiver according to claim 1, characterized in that: A diaphragm (11) is fixedly installed on the top of the bracket (2), and a central adhesive (5) is provided on the top of the bracket (2). The diaphragm (11) is in contact with the central adhesive (5).

3. The ANC headset receiver according to claim 1, characterized in that: The top of the magnet (7) is provided with a washer (8), and the sides of the washer (8) are provided with voice coils (9).

4. The ANC headset receiver according to claim 2, characterized in that: The diaphragm (11) is a three-layer composite. The top layer of the diaphragm (11) is made of PU material, the middle layer is a damping adhesive layer, and the bottom layer is made of PEEK material.

5. An ANC headset receiver according to claim 2, characterized in that: The number of the pressure-resistant sponge (10) is two, and they are symmetrically distributed.

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