CN217037422U

CN217037422U - Earphone audio structure

Info

Publication number: CN217037422U
Application number: CN202123414889.2U
Authority: CN
Inventors: 黄洪平; 邱观福; 胡佩联
Original assignee: China Etech Technology Co ltd
Current assignee: China Etech Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-22
Anticipated expiration: 2031-12-31

Abstract

The embodiment of the utility model discloses an earphone audio structure, which comprises an earphone rear shell, an earphone front shell, a sealing support and a loudspeaker main body, wherein the sealing support is arranged on one side of the earphone rear shell, which faces the earphone front shell, a first sound leakage channel and a second sound leakage channel which are mutually isolated are formed on the sealing support, and a first sound leakage hole which can be communicated with the first sound leakage channel and a second sound leakage hole which can be communicated with the second sound leakage channel are formed on the earphone rear shell; the loudspeaker main body is arranged on one side of the earphone front shell facing the earphone rear shell; the earphone backshell can with the butt joint of shell before the earphone, the loudspeaker main part with it has the sound cavity to enclose between the seal holder, the sound cavity of leaking can with first sound channel of leaking reaches the second sound channel intercommunication of leaking. The earphone audio structure can form low frequency through the dissolved product of the first sound leaking channel, and form medium frequency through the dissolved product of the second sound leaking channel, so that the balance effect of high-low, medium-low and low-frequency is achieved.

Description

Earphone audio structure

Technical Field

The utility model relates to the technical field of earphones, in particular to an earphone audio structure.

Background

The audio system is a standard component of the TWS Bluetooth headset, and the performance of the whole machine is directly influenced by the quality of the audio system of one headset. The TWS Bluetooth headset is characterized in that the size is small, but the space of a cavity of the TWS Bluetooth headset is small, so that the size of the cavity of the TWS Bluetooth headset is limited, and the medium-frequency and low-frequency responses of sound output are directly influenced.

Therefore, how to make the audio output by the speaker of the bluetooth headset less prone to distortion is a focus of attention of those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an audio structure of an earphone, which is used to solve the problem in the prior art that the speaker of a bluetooth earphone is easily overloaded and distorted.

The utility model provides an earphone audio structure, which comprises an earphone rear shell, an earphone front shell, a sealing support and a loudspeaker main body, wherein the sealing support is arranged on one side of the earphone rear shell, which faces the earphone front shell, a first sound leakage channel and a second sound leakage channel which are mutually isolated are formed on the sealing support;

the loudspeaker main body is arranged on one side, facing the earphone rear shell, of the earphone front shell;

the earphone rear shell can be in butt joint with the earphone front shell, a sound leakage cavity is formed between the loudspeaker main body and the sealing support in a surrounding mode, and the sound leakage cavity can be communicated with the first sound leakage channel and the second sound leakage channel.

Preferably, a first sound venting port is formed at a position where the sound venting cavity is communicated with the first sound venting channel, a second sound venting port is formed at a position where the sound venting cavity is communicated with the second sound venting channel, and the length of the first sound venting port is smaller than that of the second sound venting port.

Preferably, the first vent hole is an arc-shaped hole, and the second vent hole is an arc-shaped hole.

Preferably, the sealing bracket includes a first sealing bracket and a second sealing bracket, the first sound outlet and the second sound outlet are formed on the first sealing bracket, the first sealing bracket is mounted on the earphone rear shell and surrounds a sound outlet chamber with the earphone rear shell, the second sealing bracket is mounted between the first sealing bracket and the earphone rear shell, and the second sealing bracket can divide the sound outlet chamber into a first sound outlet channel and a second sound outlet channel which are isolated from each other.

Preferably, the first sealing frame includes a first sealing plate and a ring-shaped sealing plate, the first sound leakage port and the second sound leakage port are formed on the first sealing plate, and the ring-shaped sealing plate is connected to a side of the first sealing plate facing away from the front case of the earphone and connected to the rear case of the earphone.

Preferably, the first sealing plate is circular.

Preferably, the second sealing frame includes a second sealing plate and a sealing end plate, the second sealing plate is connected to the annular sealing plate and connected to the earphone rear case, and the sealing end plate is connected between the first sealing plate, the second sealing plate and the annular sealing plate.

Preferably, the second seal plate is annular.

Preferably, the first vent hole may communicate with the second vent hole.

Preferably, a sound outlet is formed in the front shell of the earphone, and a sound outlet cavity communicated with the sound outlet is defined between the speaker body and the front shell of the earphone.

The embodiment of the utility model has the following beneficial effects:

this earphone audio frequency structure, will the sealing support is installed the earphone backshell is towards one side of earphone front shell makes be formed with first sound channel and the second sound channel that lets that keeps apart each other on the sealing support, and makes be formed with on the earphone backshell can with first sound hole that lets the sound channel intercommunication and can with the second sound hole that lets the sound channel intercommunication, when the loudspeaker main part is worked, audio frequency is exported first sound hole from first sound channel and is discharged, forms the low frequency through the solution accumulation of first sound channel, and audio frequency is exported second sound channel from the second sound channel and is discharged to the second sound hole simultaneously, forms the intermediate frequency through the solution accumulation of second sound channel, reaches the balanced effect of height, well low, low-frequency like this. The audio structure of the earphone can effectively solve the problems of low-frequency dive and sense measurement, has proper sense measurement matching and does not influence the performance of medium and high frequencies.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Wherein:

FIG. 1 is a schematic partial cross-sectional view of an audio structure of a headphone in one embodiment along its longitudinal direction;

fig. 2 is a schematic partial cross-sectional view of an audio structure of a headphone in one embodiment along its transverse direction.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

As shown in fig. 1 and 2, an embodiment of the present invention of an earphone audio structure includes an earphone rear housing 1, an earphone front housing 2, a sealing bracket 3 and a speaker body 4, wherein the sealing bracket 3 is installed on a side of the earphone rear housing 1 facing the earphone front housing 2, a first sound venting channel 301 and a second sound venting channel 302 which are isolated from each other are formed on the sealing bracket 3, and a first sound venting hole 11 which can be communicated with the first sound venting channel 301 and a second sound venting hole 12 which can be communicated with the second sound venting channel 302 are formed on the earphone rear housing 1.

Be formed with sound outlet 21 before the earphone on the shell 2, loudspeaker main part 4 is installed before the earphone shell 2 orientation one side of earphone backshell 1, loudspeaker main part 4 can with enclose between the shell 2 before the earphone have with sound outlet 22 that sound outlet 21 communicates.

The earphone rear shell 1 can be in butt joint with the earphone front shell 2, a sound leakage cavity 10 is enclosed between the loudspeaker main body 4 and the sealing support 3, and the sound leakage cavity 10 can be communicated with the first sound leakage channel 301 and the second sound leakage channel 302.

In the audio structure of the earphone, the sealing bracket 3 is installed at one side of the earphone rear shell 1 facing the earphone front shell 2, so that a first sound leaking channel 301 and a second sound leaking channel 302 which are isolated from each other are formed on the sealing bracket 3, and a first sound leaking hole 11 which can be communicated with the first sound leaking channel 301 and a second sound leaking hole 12 which can be communicated with the second sound leaking channel 302 are formed on the earphone rear shell 1, when the speaker main body 4 works, audio is output to the first sound leaking hole 11 from the first sound leaking channel 301 and is discharged, low frequency is formed by dissolving and accumulating the first sound leaking channel 301, and meanwhile audio is output to the second sound leaking hole 12 from the second sound leaking channel 302 and is discharged, and medium frequency is formed by dissolving and accumulating the second sound leaking channel 302, thus, a balance effect of high-low frequency, low-frequency and medium-low frequency is achieved. The audio structure of the earphone can effectively solve the problems of low-frequency dive and sense measurement, has proper sense measurement matching and does not influence the performance of medium and high frequencies.

Preferably, the space between the earphone front case 2 and the speaker body 4 can be sealed by gluing, so as to form a front cavity independent cavity (i.e. the sound outlet cavity 22), and the space between the sealing support 3 and the earphone rear case 1 can be sealed by gluing, so as to form a rear cavity independent cavity (i.e. the sound leakage cavity 10).

The working principle of the earphone audio structure provided by the embodiment of the utility model is as follows: generating an N-th harmonic signal and an N + M-th harmonic signal of the bass signal according to the bass signal, wherein N and M are positive integers, and N is more than or equal to 2; and outputting the N-order harmonic signal from a first sound channel, and simultaneously outputting the N + M-order harmonic signal from a second sound channel, wherein the N-order harmonic signal and the N + M-order harmonic signal generate an M-order harmonic signal by a difference frequency principle.

In an embodiment, as shown in fig. 1 and fig. 2, a first sound venting port 3111 is formed at a position where the sound venting chamber 10 communicates with the first sound venting channel 301, a second sound venting port 3112 is formed at a position where the sound venting chamber 10 communicates with the second sound venting channel 302, and a length of the first sound venting port 3111 is smaller than a length of the second sound venting port 3112.

Further, the first sound release hole 3111 is an arc-shaped hole, and the second sound release hole 3112 is an arc-shaped hole.

In an embodiment, as shown in fig. 1 and fig. 2, the sealing bracket 3 includes a first sealing frame 31 and a second sealing frame 32, the first sound outlet 3111 and the second sound outlet 3112 are formed on the first sealing frame 31, the first sealing frame 31 is mounted on the earphone rear shell 1 and forms a sound outlet cavity with the earphone rear shell 1, the second sealing frame 32 is mounted between the first sealing frame 31 and the earphone rear shell 1, and the second sealing frame 32 can divide the sound outlet cavity into a first sound outlet channel 301 and a second sound outlet channel 302 which are isolated from each other, so as to achieve audio balance.

In one embodiment, as shown in fig. 1 and 2, the first sealing frame 31 includes a first sealing plate 311 and a ring-shaped sealing plate 312, the first sound-leaking port 3111 and the second sound-leaking port 3112 are formed on the first sealing plate 311, and the ring-shaped sealing plate 312 is connected to a side of the first sealing plate 311 facing away from the earphone front housing 1 and is connected to the earphone rear housing 2, so that the sound-leaking air cavity is enclosed between the first sealing frame 31 and the earphone rear housing 1.

Preferably, the first sealing plate 3111 is rounded to better interface with the inner wall of the earphone rear case 1.

In an embodiment, as shown in fig. 1 and 2, the second sealing frame 32 includes a second sealing plate 321 and a sealing end plate 322, the second sealing plate 321 is connected to the annular sealing plate 312 and connected to the earphone rear case 1, and the sealing end plate 322 is connected between the first sealing plate 311, the second sealing plate 321 and the annular sealing plate 312 to separate the sound leakage air chambers, so as to form the first sound leakage channel 301 and the second sound leakage channel 302 which are independent of each other.

Preferably, the second sealing plate 321 is ring-shaped to better contact the ring-shaped sealing plate 312 and the inner wall of the earphone rear case 1.

In one embodiment, as shown in fig. 1 and 2, the first venting hole 11 can communicate with the second venting hole 12. It should be understood that, after the first vent hole 11 and the second vent hole 12 are communicated, a vent hole is formed which can be simultaneously communicated with the first vent channel 301 and the second vent channel 302.

While the utility model has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the utility model is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. An earphone audio structure, characterized by: the earphone comprises an earphone rear shell, an earphone front shell, a sealing support and a loudspeaker main body, wherein the sealing support is arranged on one side, facing the earphone front shell, of the earphone rear shell, a first sound discharge channel and a second sound discharge channel which are mutually isolated are formed on the sealing support, and a first sound discharge hole communicated with the first sound discharge channel and a second sound discharge hole communicated with the second sound discharge channel are formed on the earphone rear shell;

the loudspeaker main body is arranged on one side of the earphone front shell facing the earphone rear shell;

2. A headphone audio structure, as claimed in claim 1, wherein: a first sound venting port is formed at the position where the sound venting cavity is communicated with the first sound venting channel, a second sound venting port is formed at the position where the sound venting cavity is communicated with the second sound venting channel, and the length of the first sound venting hole is smaller than that of the second sound venting hole.

3. A headphone audio structure, as claimed in claim 2, wherein: the first vent hole is an arc-shaped hole, and the second vent hole is an arc-shaped hole.

4. A headphone audio structure as claimed in claim 3, wherein: the sealing support comprises a first sealing support and a second sealing support, the first sound leaking port and the second sound leaking port are formed in the first sealing support, the first sealing support is installed on the rear shell of the earphone, a sound leaking air cavity is formed between the first sealing support and the rear shell of the earphone in a surrounding mode, the second sealing support is installed between the first sealing support and the rear shell of the earphone, and the second sealing support can divide the sound leaking air cavity into a first sound leaking channel and a second sound leaking channel which are mutually isolated.

5. The headphone audio structure as recited in claim 4, wherein: the first sealing frame comprises a first sealing plate and an annular sealing plate, the first sound leakage port and the second sound leakage port are formed in the first sealing plate, and the annular sealing plate is connected to one side, back to the earphone front shell, of the first sealing plate and connected with the earphone rear shell.

6. The headphone audio structure as recited in claim 5, wherein: the first sealing plate is circular.

7. A headphone audio structure as recited in claim 5, wherein: the second sealing frame comprises a second sealing plate and a sealing end plate, the second sealing plate is connected to the annular sealing plate and connected with the earphone rear shell, and the sealing end plate is connected to the first sealing plate, the second sealing plate and the annular sealing plate.

8. A headphone audio structure as claimed in claim 7, wherein: the second sealing plate is annular.

9. A headphone audio structure as claimed in claim 1, wherein: the first vent hole may communicate with the second vent hole.

10. A headphone audio structure as claimed in claim 1, wherein: a sound outlet is formed on the front shell of the earphone, and a sound outlet cavity communicated with the sound outlet is formed between the loudspeaker main body and the front shell of the earphone in a surrounding manner.