CN105979419B

CN105979419B - Waterproof dirt-proof earphone of making an uproar that falls

Info

Publication number: CN105979419B
Application number: CN201610445289.7A
Authority: CN
Inventors: 赵燕鹏; 谢萍; 李文浩
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2016-06-20
Filing date: 2016-06-20
Publication date: 2022-06-10
Anticipated expiration: 2036-06-20
Also published as: CN105979419A

Abstract

The invention relates to a waterproof and dustproof noise reduction earphone which comprises a shell with an inner cavity, wherein a sound outlet channel is arranged on the shell, the noise reduction earphone also comprises a first waterproof film covering the sound outlet channel, and a sound production unit is arranged in the inner cavity of the shell; the microphone packaging structure is arranged on the inner wall of the shell and is communicated with the sound hole arranged on the side wall of the shell; and a second waterproof membrane covering the sound hole. According to the earphone, the first waterproof membrane and the second waterproof membrane are respectively arranged at the positions of the sound outlet channel and the sound hole, so that the waterproof effect of the earphone can be improved, the external environment noise of the earphone can be picked up through the arranged microphone packaging structure, the noise of the earphone can be reduced after the noise is subjected to subsequent processing, and the user experience is improved.

Description

Waterproof dirt-proof earphone of making an uproar that falls

Technical Field

The invention relates to a sound production device, in particular to a noise reduction earphone, and particularly relates to a waterproof and dustproof noise reduction earphone.

Background

The earphone generally comprises a loudspeaker, a front shell, a rear shell and an earphone line (one end of the earphone line is connected with the loudspeaker, and the other end of the earphone line is a plug); in order to meet the requirements of people, noise reduction earphones appear on the market. The main operating principle is to pick up a noise signal around the earphone by the microphone unit and to generate a noise cancellation signal from the noise signal, by which the noise in the sound transmission path is cancelled.

However, with the development of science and technology, the requirement of people on earphones is higher and higher, and in the field of earphones, the IPX 8-level waterproof requirement is the highest-level waterproof requirement, but the existing earphones cannot realize the compatibility of earphone waterproof and noise reduction.

Disclosure of Invention

An object of the present invention is to provide a noise reduction headphone that is waterproof and dustproof.

According to one aspect of the invention, a waterproof and dustproof noise reduction earphone is provided, which comprises a shell with an inner cavity, a sound outlet channel is arranged on the shell, a first waterproof membrane covering the sound outlet channel is further included, and a sound production unit is arranged in the inner cavity of the shell; the microphone packaging structure is arranged on the inner wall of the shell and is communicated with the sound hole arranged on the side wall of the shell; and a second waterproof membrane covering the sound hole.

Optionally, the casing includes an earphone casing for mounting the sound generating unit, and a rear cavity casing for mounting the microphone packaging structure; the sound outlet channel is arranged on the earphone shell, and the sound hole is arranged on the back cavity shell.

Optionally, the microphone packaging structure includes a circuit board, a microphone unit mounted on the circuit board, and a sealing rubber sleeve for packaging the microphone unit on the circuit board, wherein the sealing rubber sleeve is attached to the inner wall of the rear cavity shell.

Optionally, the second waterproof membrane is disposed between the sealant sleeve and the rear cavity housing.

Optionally, the earphone device further comprises a through hole communicating the earphone shell and the rear cavity shell.

Optionally, a wire outlet pipe is further arranged on the rear cavity shell, and a lead wire in the sound generating unit penetrates through the through hole, enters the inner cavity of the rear cavity shell, and is led out from the wire outlet pipe.

Optionally, the earphone shell includes an earphone front shell and an earphone rear shell which are buckled together, and the sound outlet channel is a sound outlet pipe arranged on the earphone front shell.

Optionally, a pressure relief groove is formed in the outer wall of the sound outlet pipe, extends in the length direction of the sound outlet pipe, and penetrates through the end of the sound outlet pipe.

Optionally, the two pressure relief grooves are symmetrically distributed on two sides of the sound outlet pipe.

Optionally, an earplug is further disposed at the end of the sound outlet pipe.

According to the earphone, the first waterproof membrane and the second waterproof membrane are respectively arranged at the positions of the sound outlet channel and the sound hole, so that the waterproof effect of the earphone can be improved, the external environment noise of the earphone can be picked up through the arranged microphone packaging structure, the noise of the earphone can be reduced after the noise is subjected to subsequent processing, and the user experience is improved.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic view of the structure of the earphone of the present invention.

Fig. 2 is a schematic structural view of a front case of the headset of fig. 1.

Fig. 3 is a schematic diagram of the rear chamber housing position of fig. 1.

Fig. 4 is a cross-sectional view of the microphone package location of fig. 3.

Fig. 5 is a graph of the frequency response of the headset of fig. 1.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1, the present invention provides a waterproof and dustproof noise reduction earphone, including a housing having an inner cavity, wherein a sound generating unit is disposed in the inner cavity of the housing; the sound generating unit may be a moving coil, electrodynamic, moving iron or other type of horn. The shell is provided with a sound outlet channel communicated with the inner cavity of the shell, so that the sound emitted by the sound generating unit can be transmitted to the ears of a human body from the sound outlet channel. In order to prevent water from entering the casing from the sound outlet channel, a first waterproof membrane 6 is further provided to cover the sound outlet channel, and the sound outlet channel is covered by the first waterproof membrane 6, so that the water resistance of the sound outlet channel is realized, and the first waterproof membrane 6 does not influence the sound emission of the sound generating unit, as shown in fig. 2.

And a microphone packaging structure is also arranged in the inner cavity of the shell, is arranged on the inner wall of the shell and is communicated with the sound hole 12 arranged on the side wall of the shell. For those skilled in the art, the microphone packaging structure includes a microphone unit packaged inside, and the microphone unit can pick up external noise from the sound hole 12, so that subsequent processing can be performed on the external noise, and finally, the noise reduction function of the earphone is achieved. The principle of using a microphone to pick up ambient noise to reduce noise of an earphone is well known to those skilled in the art, and will not be described in detail here. In order to prevent water from entering the interior of the housing from the sound hole 12, a second waterproof film 13 is provided to cover the sound hole 12, and the sound hole 12 is covered with the second waterproof film 13, thereby achieving waterproofing of the sound hole 12.

The first waterproof membrane 6 and the second waterproof membrane 13 of the present invention may be made of waterproof materials known to those skilled in the art, such as waterproof mesh cloth. The microphone unit is arranged in the shell in a packaging structure mode, so that the microphone unit can be isolated from the sound production unit, and the sound produced by the sound production unit cannot be picked up by the microphone unit, so that the earphone is prevented from outputting signals inhibiting the sound production unit.

According to the earphone, the first waterproof membrane and the second waterproof membrane are respectively arranged at the positions of the sound outlet channel and the sound hole, so that the sound outlet channel and the sound hole are blocked when the shell is communicated with the outside, and the waterproof effect of the earphone is greatly improved; the external ambient noise of the earphone can be picked up through the arranged microphone packaging structure, and after the noise is subjected to subsequent processing, the noise of the earphone can be reduced, and the user experience is improved.

In a specific embodiment of the present invention, the housing may include an earphone housing for mounting the sound generating unit, and a rear cavity housing 4 for mounting the microphone packaging structure. The earphone shell is connected with the back cavity shell 4, wherein the sound outlet channel is arranged on the earphone shell, and the sound hole 12 is arranged on the back cavity shell 4. With sound production unit, microphone packaging structure setting in two independent casings for sound production unit and microphone packaging structure accessible earphone shell, rear cavity casing 4 are isolated and are opened, bring the influence to microphone packaging structure with the sound that prevents sound production unit and send.

Wherein, the earphone casing can include casing 2, earphone backshell 1 before the earphone that the technical personnel in this field are familiar with, casing 2, earphone backshell 1 lock back have formed the earphone casing that has the inner chamber before the earphone, the sound production unit sets up in the inner chamber of this earphone casing, goes out the sound passageway and sets up before the earphone on casing 2 for the sound that the sound production unit sent can follow the earphone and spread to the external world out the sound passageway of casing 2.

It is obvious to those skilled in the art that the sound outlet channel can be a through hole provided on the front shell 2 of the earphone, and can also be a sound outlet pipe 5 structure, which is selected according to the type of earphone, with reference to fig. 2. When the sound outlet pipe 5 structure is adopted, the sound emitted by the sound emitting unit is emitted through the sound outlet pipe 5. An earplug 3 can be further arranged at the end of the sound outlet pipe 5, and the earplug 3 can be made of foam materials well known to those skilled in the art, and can also be made of plastic materials, and the like, so that the comfort level of wearing of a user can be improved through the earplug 3.

In the earphone of the invention, the first waterproof membrane 6 covering the sound outlet channel is arranged, and the low-frequency performance of the earphone can be influenced because the first waterproof membrane 6 has poor air permeability. In order to guarantee the performance of earphone, set up the intercommunication earphone shell and rear cavity casing 4's through-hole 11, through-hole 11 couples together earphone shell and rear cavity casing 4 to can make the rear chamber of sound generating unit extend to rear cavity casing 4 in, that is to say, improve the rear cavity volume of sound generating unit, thereby improve the low frequency effect of earphone. Fig. 5 shows a frequency response curve of the earphone when the through hole 11 is provided and when the through hole 11 is not provided, wherein a solid line shows a frequency response curve of the earphone after the through hole 11 is provided, and a dotted line shows a frequency response curve of the earphone when the through hole 11 is not provided. As can be seen from the test results of fig. 5, the through hole 11 can improve the response of the earphone at low frequency, for example, at low frequency of 20Hz, the earphone can be lifted by about 5dB by the through hole 11.

It is further preferred that an outlet tube 8 is also provided on the rear chamber housing 4, with reference to fig. 3, so that the leads of the microphone package can be led out from this outlet tube 8. Wherein, the lead wire that is arranged in the sound generating unit in the earphone shell passes through the through hole 11 enters into the inner cavity of the rear cavity shell 4, and is led out from the wire outlet pipe 8, thereby realizing the penetration of the lead wire of the sound generating unit.

Since the through hole 11 connects the earphone housing and the rear cavity housing 4 together, in order to further prevent the microphone package structure from picking up the sound emitted from the sound emitting unit, the microphone package structure is designed to: the microphone unit comprises a circuit board 10, a microphone unit 14 mounted on the circuit board 10 and a sealing rubber sleeve 9 for packaging the microphone unit 14 on the circuit board 10, wherein the sealing rubber sleeve 9 is attached to the inner wall of the rear cavity shell 4. Therefore, the microphone unit 14 can be further sealed through the sealing rubber sleeve 9, and the noise reduction performance of the earphone is ensured. The second waterproof film 13 described above may be provided outside the rear chamber case 4; preferably, a second waterproofing membrane 13 is provided in a position between the packing rubber 9 and the rear chamber housing 4, with reference to fig. 4.

In a preferred embodiment of the present invention, a pressure relief groove 7 may be provided on an outer wall of the sound outlet pipe 5, and the pressure relief groove 7 extends in a longitudinal direction of the sound outlet pipe 5 and penetrates to an end of the sound outlet pipe 5. The two pressure relief grooves 7 can be arranged and symmetrically distributed on two sides of the sound outlet pipe 5. After the user wears the earphone, the pressure relief groove 7 can balance the sound pressure in the ear of the human body, and the listening experience of the user is improved; and external noise can enter into the ear, so that the noise reduction function of the earphone microphone unit is improved, and active noise reduction of the earphone is realized. The advantage of the pressure relief groove 7 is even more pronounced when the earphone is of in-ear construction.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. The utility model provides a waterproof dirt-proof earphone of making an uproar that falls which characterized in that: the loudspeaker comprises a shell with an inner cavity, a sound outlet channel and a first waterproof membrane (6) covering the sound outlet channel, wherein a sound production unit is arranged in the inner cavity of the shell, and the sound production unit is a moving-coil type, electric type or moving-iron type loudspeaker; the microphone packaging structure is arranged on the inner wall of the shell and is communicated with a sound hole (12) formed in the side wall of the shell; further comprising a second waterproofing membrane (13) covering the sound hole (12); the shell comprises an earphone shell used for installing a sound production unit and a rear cavity shell (4) used for installing a microphone packaging structure; the sound outlet channel is arranged on the earphone shell, and the sound hole (12) is arranged on the rear cavity shell (4); the earphone shell is characterized by further comprising a through hole (11) for communicating the earphone shell with the rear cavity shell (4).

2. The noise reducing headset of claim 1, wherein: the microphone packaging structure comprises a circuit board (10) and a microphone unit (14) mounted on the circuit board (10), and further comprises a sealing rubber sleeve (9) packaging the microphone unit (14) on the circuit board (10), wherein the sealing rubber sleeve (9) is attached to the inner wall of the rear cavity shell (4).

3. The noise reducing headset of claim 2, wherein: the second waterproof membrane (13) is arranged between the sealing rubber sleeve (9) and the rear cavity shell (4).

4. The noise reducing headset of claim 1, wherein: still be provided with out spool (8) on back chamber casing (4), lead wire in the sound generating unit passes through-hole (11) enters into the inner chamber of back chamber casing (4), and follows it draws forth out spool (8).

5. The noise reducing headset of claim 1, wherein: the earphone shell comprises an earphone front shell (2) and an earphone rear shell (1) which are buckled together, and the sound outlet channel is a sound outlet pipe (5) arranged on the earphone front shell (2).

6. The noise reducing headset of claim 5, wherein: the outer wall of the sound outlet pipe (5) is provided with a pressure relief groove (7), and the pressure relief groove (7) extends in the length direction of the sound outlet pipe (5) and penetrates through the end of the sound outlet pipe (5).

7. The noise reducing headset of claim 6, wherein: the two pressure relief grooves (7) are symmetrically distributed on two sides of the sound outlet pipe (5).

8. The noise reducing headset of claim 5, wherein: an earplug (3) is also arranged at the end head of the sound outlet pipe (5).