CN213462209U

CN213462209U - Dual-microphone noise reduction earphone

Info

Publication number: CN213462209U
Application number: CN202022546227.XU
Authority: CN
Inventors: 董杰平
Original assignee: Shenzhen Ujerry Electronics Co ltd
Current assignee: Shenzhen Ujerry Electronics Co ltd
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-06-15
Anticipated expiration: 2030-11-06

Abstract

The utility model provides an earphone of making an uproar falls in two microphones belongs to the earphone structure field of making an uproar of falling. The utility model discloses a casing, the loudspeaker of setting in the casing, loudspeaker will antechamber and rear chamber are split into to the casing, loudspeaker go out the antechamber of sound direction and are equipped with the sound guide structure, the earphone play sound hole intercommunication of sound guide structure one end and antechamber, the other end with the rear chamber intercommunication, be equipped with in the rear chamber and fall the microphone of making an uproar, and with fall the PCBA board that the microphone of making an uproar links to each other, it can gather to fall the microphone of making an uproar the antechamber noise of sound guide structure output, and export and give the PCBA board is handled. The utility model has the advantages that: noise in the front cavity of the earphone can be offset through the sound guide structure, negative pressure is leaked out, and sound tone quality of the earphone is effectively improved.

Description

Dual-microphone noise reduction earphone

Technical Field

The utility model relates to an earphone structure of making an uproar falls especially relates to an earphone of making an uproar falls in two microphones.

Background

The method of noise reduction for headphones generally has two types, one is active noise reduction and the other is passive noise reduction. The active noise reduction earphone generates reverse sound waves equal to external noise through a noise reduction system, and neutralizes the noise, so that the noise reduction effect is achieved. The passive noise reduction earphone mainly forms a closed space by surrounding ears, or adopts sound insulation materials such as silica gel earplugs and the like to block external noise.

Among the prior art, the earphone of making an uproar falls for passive form usually, forms through sound insulation material and blocks the space around the ear to block the noise, but the effect of this mode separation noise is limited, and can only block high frequency noise usually, and it is not obvious to low frequency noise reduction effect. Moreover, the volume and weight of the earphone provided with the sound insulation material are usually large, which affects the use of users. The noise is reduced actively or passively, so that great negative pressure is caused to ears of people, and people feel dizzy, stuffy head and nervous mood.

SUMMERY OF THE UTILITY MODEL

For solving the problem among the prior art, the utility model provides a two microphones earphone of making an uproar falls.

The utility model discloses a casing, the loudspeaker of setting in the casing, loudspeaker will antechamber and rear chamber are split into to the casing, loudspeaker go out the antechamber of sound direction and are equipped with the sound guide structure, the earphone play sound hole intercommunication of sound guide structure one end and antechamber, the other end with the rear chamber intercommunication, be equipped with in the rear chamber and fall the microphone of making an uproar, and with fall the PCBA board that the microphone of making an uproar links to each other, it can gather to fall the microphone of making an uproar the antechamber noise of sound guide structure output, and export and give the PCBA board is handled.

The utility model discloses make further improvement, the sound piece of inhaling that inhales of noise absorption still is equipped with in the front chamber.

The utility model discloses make further improvement, it is cotton for inhaling the sound to inhale the sound spare, the casing is including setting up the protecgulum that the earphone goes out the sound hole, it is in to inhale the cotton setting of sound on the protecgulum.

The utility model discloses make further improvement, the leading tone structure is the leading tone pipe of setting at the intracavity in the front.

The utility model discloses make further improvement, the protecgulum lateral wall encloses synthetic sound guide groove with the sound guide bone, the sound guide pipe sets up in the sound guide groove.

The utility model discloses make further improvement, the casing still include with protecgulum complex back lid, be equipped with loudspeaker installation position in back lid and the protecgulum cooperation department, loudspeaker installation position is equipped with the leading tone clearance with the leading tone pipe intercommunication in antetheca, lead the both ends opening in sound groove, one of them open end and earphone play sound hole intercommunication, another open end and leading tone clearance intercommunication.

The utility model discloses make further improvement, PCBA board and PCBA mainboard of making an uproar fall including interconnect, the output of making an uproar microphone and the PCBA board input of making an uproar link to each other.

The utility model discloses make further improvement, it all is equipped with the row needle for interconnect to fall PCBA board and the bluetooth PCBA mainboard of making an uproar.

The utility model discloses make further improvement, the PCBA mainboard is the bluetooth PCBA mainboard including bluetooth wireless module, the earphone of making an uproar is fallen including setting up still to two microphones the conversation microphone and the battery of back chamber, the conversation microphone with bluetooth PCBA mainboard links to each other, the conversation microphone orientation the sound hole setting is picked up in the conversation, the battery does the earphone provides the power.

Compared with the prior art, the beneficial effects of the utility model are that: noise, the negative pressure in can be let out the earphone front cavity through leading the sound structure, have effectively improved the sound tone quality of earphone, have reduced the ambient noise of earphone, the conversation noise, improve the audio performance of earphone greatly, improve its tone quality effect, moreover effectual the inner space who has utilized the earphone, can not increase the earphone volume, convenience of customers uses.

Drawings

Fig. 1 is an exploded view of an embodiment of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view of the sound guiding structure of the present invention;

fig. 4 is a schematic view of the flow direction of the front cavity noise of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1-2, the present embodiment is an ear-hanging bluetooth wireless earphone as an embodiment of the present invention, the casing of the present invention includes a front cover 2 and a rear cover 7 fixedly connected to the front cover, a face cover 12 disposed outside the rear cover 7, and an ear hanging piece disposed on the face cover 12 of the present embodiment.

The front cover 2 of this embodiment is provided with a sound outlet part, and the periphery of the sound outlet part is also provided with an ear cap 1. A horn installation position for installing a horn is arranged at the matching position of the rear cover 7 and the front cover 2, after the horn is installed, the earphone is divided into a front cavity 16 and a rear cavity, a sound guide pipe 4 is arranged in the front cavity 16 in the sound outlet direction of the horn in the embodiment, one end 18 of the sound guide pipe 4 is communicated with an earphone sound outlet hole of the front cavity 16, and the other end 19 of the sound guide pipe is communicated with the rear cavity through a sound guide gap 7-1 arranged on the horn installation position, as shown in fig. 4.

Specifically, as shown in fig. 3, in this embodiment, a sound guiding rib 2-1 is disposed on one side of the front cover 2, and a sound guiding groove 2-2 is defined by the sound guiding rib 2-1 and the inner side of the side wall of the front cover 2, and is used for fixing the sound guiding tube 4. The sound guide tube 4 can be fixed, the sound guide tube 4 is ensured to be intact in work, and the consistency in work is ensured. In order to realize the transmission of noise in the sound guide tube, the two ends of the sound guide groove 2-2 of the embodiment are opened, wherein one open end is communicated with the sound outlet hole of the earphone, and the other open end 2-3 is communicated with the sound guide gap 7-1. Of course, in this embodiment, the sound guide duct may be directly adhered and fixed to the front cover 2 without providing the sound guide groove.

As shown in fig. 1 and fig. 2, in this embodiment, a noise reduction microphone 6 is disposed in the rear cavity, the noise reduction microphone 6 is disposed toward the direction of the output noise of the sound guide tube 5, and two PCBA boards are disposed in the rear cavity of this embodiment, including a noise reduction PCBA board 9 and a bluetooth PCBA motherboard 10, wherein the noise reduction PCBA board 9 is used for reducing noise, and the bluetooth PCBA motherboard 10 realizes the basic function of a bluetooth headset, preferably, the volume occupied by the two PCBA boards is reduced as much as possible by connecting the pin 11. Therefore, under the condition of ensuring that the volume of the original Bluetooth headset is unchanged, the noise reduction effect is realized, and the use satisfaction of a user is improved.

The noise reduction microphone 6 is connected with the noise reduction PCBA board 9 through a noise reduction microphone connecting wire 13, the noise reduction microphone 6 can collect front cavity noise transmitted by the sound guide pipe 4 and output the front cavity noise to the noise reduction PCBA board 9 for processing, active noise reduction is achieved, and the noise reduction effect is achieved.

In this example, the earphone is a combination of active and passive noise reduction, and a noise absorbing member is disposed in the front cavity 16. Specifically, the sound absorbing member of this example is the sound absorbing cotton 3, the inboard bottom of protecgulum 2 is equipped with the cotton bonding portion of sound absorbing, the sound absorbing cotton 3 is fixed on the cotton bonding portion of sound absorbing, realizes the utility model discloses a passive noise reduction effect.

The utility model discloses still be in including setting up conversation microphone 15 and the battery 14 of back chamber, conversation microphone 15 with bluetooth PCBA mainboard 10 links to each other, and the orientation the setting of conversation sound collecting hole, battery 14 does the earphone provides the power. If the earphone is a wired earphone, the call microphone 15 of the present embodiment may also be externally disposed and connected to the PCBA motherboard by a wire, thereby implementing the basic call function of the earphone.

Compared with the prior art, the utility model discloses a leading note pipe is with antechamber and back chamber intercommunication to can let out the negative pressure of the intracavity before the earphone, prevent the vexed scheduling problem of dizziness that causes because of the negative pressure, can also effectively fall the noise of making an uproar to the earphone antechamber, show the sound tone quality that has improved the earphone, the ambient noise of earphone has been reduced, the conversation noise, improve the audio performance of earphone greatly, improve its tone quality effect, and the effectual inner space who has utilized the earphone, can not increase the earphone volume, convenience of customers uses.

The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the present invention are within the protection scope of the present invention.

Claims

1. A dual-microphone noise-reducing headset, comprising: including the casing, set up the loudspeaker in the casing, loudspeaker will antechamber and rear chamber are split into to the casing, loudspeaker go out the antechamber of sound direction and are equipped with the sound guide structure, sound guide structure one end goes out the sound hole intercommunication with the earphone in antechamber, the other end with the rear chamber intercommunication, the rear chamber is equipped with in and falls the microphone of making an uproar, and with fall the PCBA board that the microphone links to each other, it can gather to fall the microphone of making an uproar the antechamber noise of sound guide structure output, and output gives the PCBA board is handled.

2. The dual microphone noise reducing headset of claim 1, wherein: and a sound absorbing piece for absorbing noise is arranged in the front cavity.

3. A dual microphone noise reducing headset according to claim 2, wherein: inhale the sound piece and be for inhaling the sound cotton, the casing is including setting up the protecgulum that the earphone goes out the sound hole, inhale the sound cotton setting and be in on the protecgulum.

4. A dual microphone noise reducing headset according to claim 3, wherein: the sound guide structure is a sound guide tube arranged in the front cavity.

5. The dual microphone noise reducing headset of claim 4, wherein: the side wall of the front cover and the sound guiding bone are encircled to form a sound guiding groove, and the sound guiding pipe is arranged in the sound guiding groove.

6. The dual microphone noise reducing headset of claim 5, wherein: the casing still includes the back lid with protecgulum complex, be equipped with loudspeaker installation position in back lid and the protecgulum complex department, loudspeaker installation position is equipped with the leading sound clearance with the leading sound pipe intercommunication of front chamber, lead the both ends opening of sound groove, one of them open end and earphone play sound hole intercommunication, another open end and leading sound clearance intercommunication.

7. A dual microphone noise reducing earphone according to any of claims 1-6, wherein: PCBA board and PCBA mainboard of making an uproar fall including interconnect, the output of the microphone of making an uproar falls PCBA board input and links to each other.

8. The dual microphone noise reducing headset of claim 7, wherein: the PCBA board of making an uproar and PCBA mainboard all are equipped with row needle for interconnect.

9. The dual microphone noise reducing headset of claim 7, wherein: PCBA mainboard is the bluetooth PCBA mainboard that includes bluetooth wireless module, the earphone of making an uproar still falls in two microphones is including setting up the conversation microphone and the battery of back chamber, the conversation microphone with bluetooth PCBA mainboard links to each other, the setting of sound hole is picked up towards the conversation to the conversation microphone, the battery does the earphone provides the power.