CN210274456U

CN210274456U - Earphone set

Info

Publication number: CN210274456U
Application number: CN201921559129.0U
Authority: CN
Inventors: 卢华庭; 邓田力; 黑春亮; 陈日成; 贺胜军; 杨胜吟
Original assignee: Jiangxi Lianchuang Sound Macro Electronic Co ltd
Current assignee: Jiangxi Lianchuang Sound Macro Electronic Co ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-04-07
Anticipated expiration: 2029-09-18

Abstract

The utility model provides an earphone, include the shell and set firmly the conversation microphone subassembly in the shell, this microphone subassembly is including setting firmly the first mounting in the shell, set firmly the PCB board at first mounting lower extreme, and the first microphone of being connected with the PCB board, set up the pickup hole of the first microphone of intercommunication on this PCB board, set up the outside first sound inlet hole and the first sound hole of letting out of intercommunication earphone on this shell respectively, the inside first sound inlet hole of intercommunication, first sound hole and the first sound pipe of leading of picking up the sound hole of seting up of this first mounting. The embodiment of the utility model provides an in, through setting up first leading sound pipeline and first sound hole of letting out, the acoustic pressure that will follow the wind sound that first sound hole on the route between the first microphone arouses disperses to the outside through this passageway, reduces the wind pressure to prevent that wind from forming the vortex on the route, thereby realize reducing the effect of wind noise, mention speech quality.

Description

Earphone set

Technical Field

The utility model relates to an electronic product technical field especially relates to an earphone.

Background

The existing earphone has the function of communication besides the function of audio playing. The earphone with the conversation function is internally provided with microphones for receiving audio, and the conversion between sound signals and electric signals is carried out through a series of circuit designs so as to transmit the sound signals to a receiving party. Correspondingly, a sound pickup hole is arranged on the shell part of the earphone, and external sound is conducted to the microphone through the sound pickup hole.

In general, when a microphone receives an acoustic signal emitted by a user, external noise signals, especially wind noise, are inevitably received synchronously. The main frequency component of wind noise is low frequency, the frequency is generally below 200Hz, and the main energy component is concentrated around 45 Hz. Because wind noise contains many bass components, the energy density is very high, which easily causes microphone overload distortion, resulting in low voice call quality.

Wind noise is different from mechanical noise (such as airplane sound, bus sound and train sound), and can be weakened or offset by generating a reverse sound wave through an active noise reduction circuit or achieve a passive noise reduction effect by isolating high-frequency noise through a sealing material. Therefore, no earphone in the prior art can well reduce wind noise so as to improve the conversation quality.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a headphone for the voice quality of a voice-over headphone with wind noise in the prior art.

The utility model provides an earphone, includes the shell and sets firmly in the conversation microphone subassembly in the shell, the conversation microphone subassembly including set firmly in first mounting in the shell, set firmly in the PCB board of first mounting lower extreme, and with the first microphone that the PCB board is connected, set up the intercommunication on the PCB board the pickup hole of first microphone, set up first sound inlet hole and the first sound hole of letting out of intercommunication earphone on the shell respectively, set up inside the intercommunication of first mounting first sound inlet hole, first sound hole of letting out and the first sound pipe that leads of sound hole.

Further, in the above earphone, the first sound guiding pipe includes a first sound guiding portion arranged in a horizontal direction, and a second sound guiding portion and a third sound guiding portion which are perpendicular to the first sound guiding portion, the first sound guiding portion is communicated with the first sound inlet, the second sound guiding portion is located at an end of the first sound guiding portion and is communicated with the first sound outlet, and the third sound guiding portion is communicated with the sound pickup hole.

Further, in the above earphone, the first sound leading portion is in coaxial communication with the first sound inlet hole or in communication with the first sound inlet hole through a vertical pipe.

Further, in the above earphone, the first sound outlet hole is coaxially communicated with the first sound leading part or communicated with the first sound leading part through a transverse pipeline.

Further, in the above earphone, an accommodating groove is formed in the upper end of the housing, a decoration sheet is fixedly arranged in the accommodating groove, and the decoration sheet covers a part of the first sound release hole.

Further, in the above earphone, two ends of the first sound guiding pipe on the first fixing member are respectively provided with a sound leakage waterproof net.

Further, in the above earphone, the first fixing member is made of rubber.

Further, the earphone further comprises a feedforward microphone assembly fixedly arranged in the casing, the feedforward microphone assembly comprises a second fixing piece and a second microphone fixedly arranged on the second fixing piece, a second sound inlet hole and a second sound outlet hole communicated with the outside of the earphone are formed in the casing, and a second sound guide pipeline communicated with the second sound inlet hole, the second sound outlet hole and the second microphone is formed in the second fixing piece.

Further, above-mentioned earphone, wherein, the pick-up hole of second microphone deviates from the central line 1 ~ 3mm of second sound guide pipe.

The embodiment of the utility model provides an in, through setting up first leading sound pipeline and first sound hole of letting out, the acoustic pressure that will follow the wind sound that first sound hole on the route between the first microphone arouses disperses to the outside through this passageway, reduces the wind pressure to prevent that wind from forming the vortex on the route, thereby realize reducing the effect of wind noise. And ordinary human voice, the energy is low, the frequency spectrum is high, generally not influenced, can keep the conversation quality better.

Drawings

Fig. 1 is a schematic structural diagram of an earphone according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged schematic view of region A of FIG. 2;

fig. 4 is a schematic structural view of a first fixing member according to a first embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 1;

FIG. 6 is an enlarged structural view of the area A in FIG. 5;

fig. 7 is a schematic structural view of a second fixing member according to a second embodiment of the present invention;

fig. 8 is a schematic side view of a second fixing member according to a second embodiment of the present invention;

fig. 9 is a schematic sectional view taken along line C-C in fig. 8.

Description of the main elements

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The embodiment of the invention is given in the attached drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, this embodiment is provided so that this disclosure will be thorough and complete.

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. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

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 invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, an earphone according to a first embodiment of the present invention includes a housing 10 and a microphone assembly fixed in the housing 10. The earphone can be a head-wearing earphone, comprises an ear cover and a head band, and the conversation microphone assembly is used for receiving a voice signal and converting the voice signal into an acousto-electric signal.

As shown in fig. 2 to 4, the microphone assembly includes a first fixing member 21 fixed in the housing 10, a PCB 22 fixed at a lower end of the first fixing member 21, and a first microphone 23 connected to the PCB 22. The PCB 22 is provided with a sound collecting hole 24 communicating with the first microphone 24. The casing 10 is provided with a first sound inlet hole 11 and a first sound outlet hole 12, and the first sound inlet hole 11 and the first sound outlet hole 12 are disposed at one end of the casing far away from the head band and are disposed at adjacent positions. Specifically, the housing 10 includes a flat plate portion 13 and an inclined portion 14 connected around an edge of the flat plate portion 13, the first sound inlet hole 11 is formed in the inclined portion 14, and the first sound outlet hole 12 is formed in an edge of the flat plate portion 13.

The first fixing member 21 is provided therein with a first sound guiding duct 30 communicating the first sound inlet hole 11, the first sound outlet hole 12, and the sound collecting hole 24. The user's conversation voice enters the inside of the earphone through the first sound inlet hole 11 and enters the sound pickup hole 24 through the first sound guide duct 30 to be conducted to the first microphone 23, and at the same time, the wind noise entering the earphone from the first sound inlet hole 11 enters the first sound discharge hole 12 from the first sound guide duct 30 to be dispersed to the outside.

Specifically, the first sound guide duct 30 includes a first sound guide portion 31 disposed in a horizontal direction, and a second sound guide portion 32 and a third sound guide portion 33 vertically on the first sound guide portion 31. The first sound inlet hole 11 is provided in the horizontal direction and coaxially communicates with the first sound guiding portion 31. The second sound leading part 32 is vertically connected to an end of the first sound leading part 31 and communicates with the first venting hole 12. The third sound leading portion 33 is directed vertically downward and communicates with the sound pickup hole 24. The first sound guide pipeline is internally provided with a larger cavity volume, the cross sections of the first sound guide part and the second sound guide part are in a runway shape, and the widths of the first sound guide part and the second sound guide part are larger than the width of the third sound guide part. The change of the inner dimension of the first sound guide pipeline enables the entering wind pressure to be rapidly reduced and dispersed to the outside through the sound leakage hole.

The present embodiment changes the direction of the wind noise between the first sound inlet hole 11 and the first microphone 23 by the structure of providing the first sound guiding duct 30 and the first sound discharging hole 12 to prevent the wind noise from generating a vortex air flow in the process of entering the pickup hole 24. And through the change of the volume of the acoustic cavity of the first pickup pipeline and the arrangement of the sound leakage channel, the sound pressure and the energy density of the sound entering the first microphone are obviously reduced, most of wind noise components are filtered, and the adverse effect generated by wind noise is effectively reduced.

The upper end of the casing 10 is provided with a containing groove, a decoration sheet 40 is fixedly arranged in the containing groove, and the decoration sheet covers part of the first sound release hole 12, so that the exposed area of the first sound release hole 12 is reduced, and the appearance of the earphone is not affected.

Further, a sound leakage waterproof net 50 is respectively arranged at two ends of the first sound guide pipe 30 on the first fixing member 21. The sound leakage and water proof net 50 has the functions of restraining the energy of wind noise and reducing the influence of the wind noise on the sound collection of the microphone under the condition of normal sound inlet, and the other function of preventing water drops or sweat from entering a sound guide pipeline to generate adverse effect on the quality of the microphone.

Further, the first fixing member 21 may be made of rubber. Guarantee the tight fit between the first mounting of rubber material and the shell of plastic material, enable the waterproof net of sound leakage and take place the hidden danger that the pine takes off like this.

Further, the shape of the first sound inlet hole and the first sound outlet hole may be circular, square, racetrack, or oval.

In this embodiment, by providing the first sound guide duct and the first sound discharge hole, the sound pressure caused by the wind sound on the path from the first sound inlet hole to the first microphone is dispersed to the outside through the passage, the wind pressure is reduced, and the wind is prevented from forming a vortex on the path, thereby achieving the effect of reducing the wind noise. And ordinary human voice, the energy is low, the frequency spectrum is high, generally not influenced, can keep the conversation quality better.

Referring to fig. 5 to 7, a headset according to a second embodiment of the present invention has a structure substantially the same as that of the headset according to the first embodiment, except that the headset further includes a feedforward microphone assembly. The feed forward microphone assembly is disposed on the housing 10 of the headset and is disposed generally at one end of the housing 10 adjacent the headband. The feedforward microphone assembly includes a second fixing member 61 and a second microphone 62 fixedly arranged in the casing 10, a groove adapted to the second microphone 62 is formed at the lower end of the second fixing member 61, and the second microphone 62 is fixedly arranged in the groove. The casing 10 is provided with a second sound inlet hole 15 and a second sound outlet hole 16 communicated with the outside of the earphone, and the second fixing member 61 is provided with a second sound guide pipe 70 communicated with the second sound inlet hole 15, the second sound outlet hole 16 and the groove. The sound entering the earphone from the second sound inlet hole 15 is conducted to the second microphone 62 after entering the groove from the second sound leading channel 70; and the wind noise entering from the second sound inlet hole 15 is dispersed to the outside after entering the second sound discharge hole 16 from the second sound guide passage 70.

The second sound guiding duct 70 is configured according to the positions of the second sound inlet hole and the second sound outlet hole, and has substantially the same structure as the first sound guiding duct 30, including a first sound guiding portion arranged in a horizontal direction, and a second sound guiding portion and a third sound guiding portion arranged vertically on the first sound guiding portion. Except that the first sound leading part is communicated with the second sound inlet hole 15 through a vertical duct 71; the second vent hole 16 communicates with the first sound leading portion through a lateral duct 72.

Further, the second fixing member 61 may be made of rubber, and two ends of the second sound guiding pipe 70 on the second fixing member 61 are respectively provided with a sound leakage waterproof net, which has the same function as the sound leakage waterproof net in the first embodiment, and will not be described herein.

In this embodiment, the sound entering the inside of the earphone from the second sound inlet hole reduces the wind noise by arranging the second sound guiding pipe and the second sound discharging hole, so as to improve the communication quality.

Further, as shown in fig. 8 and 9, in order to prevent the energy density of the wind noise directly transmitted to the second microphone through the second sound guiding duct from being too high, the sound pickup holes of the second microphone are shifted from the center line of the second sound guiding duct by 1 to 3mm in this embodiment, that is, the horizontal distance d between the center position of the third sound guiding part 70b and the center line of the first sound guiding part 70a is 1 to 3mm as shown in fig. 9.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides an earphone, includes the shell and sets firmly in the conversation microphone subassembly in the shell, its characterized in that, conversation microphone subassembly including set firmly in first mounting in the shell, set firmly in the PCB board of first mounting lower extreme, and with the first microphone that the PCB board is connected, set up the intercommunication on the PCB board the pickup hole of first microphone respectively, set up first sound inlet and the first sound hole of letting out of intercommunication earphone on the shell, first mounting is inside set up the intercommunication first sound inlet, first sound hole of letting out and the first sound pipe that leads of sound hole.

2. The earphone according to claim 1, wherein the first sound guiding duct includes a first sound guiding portion disposed in a horizontal direction, and a second sound guiding portion and a third sound guiding portion disposed perpendicularly to the first sound guiding portion, the first sound guiding portion communicating with the first sound inlet hole, the second sound guiding portion being located at an end portion of the first sound guiding portion and communicating with the first sound outlet hole, the third sound guiding portion communicating with the sound pickup hole.

3. The earphone according to claim 2, wherein the first sound leading portion is in coaxial communication with the first sound inlet hole or in communication through a vertical duct.

4. The earphone according to claim 2, wherein the first vent hole is in coaxial communication with the first sound leading part or in communication through a lateral duct.

5. The earphone according to claim 1, wherein the upper end of the housing defines a receiving groove, and a decoration plate is fixedly disposed in the receiving groove and covers a portion of the first venting hole.

6. The earphone as claimed in claim 1, wherein a sound-leaking waterproof net is provided on each of both ends of the first sound-guiding duct on the first fixing member.

7. The headset of claim 1, wherein the first mount is formed of rubber.

8. The earphone according to claim 1, further comprising a feedforward microphone assembly fixed in the casing, wherein the feedforward microphone assembly comprises a second fixing member and a second microphone fixed on the second fixing member, the casing is provided with a second sound inlet hole and a second sound outlet hole communicated with the outside, and the second fixing member is provided with a second sound guide pipe communicated with the second sound inlet hole, the second sound outlet hole and the second microphone.

9. The earphone according to claim 8, wherein the pickup hole of the second microphone is offset from a center line of the second sound guide duct by 1 to 3 mm.