CN219478121U - Bone conduction earphone with wind noise resistant structure - Google Patents

Abstract

The utility model discloses a bone conduction earphone with an anti-wind noise structure, which relates to the technical field of bone conduction earphone equipment, and comprises a radio microphone, wherein a noise reduction structure is arranged at the position of an earphone shell corresponding to the radio microphone; the noise reduction structure comprises a nonlinear sound receiving pipeline and a front-end rectifying part, one end of the nonlinear sound receiving pipeline faces the sound receiving microphone, and the other end of the nonlinear sound receiving pipeline is provided with the front-end rectifying part. According to the bone conduction earphone with the wind noise resistant structure, the noise reduction structure is arranged at the pick-up position of the sound receiving microphone, so that sound receiving quality can be optimized, and conversation quality can be improved. The channel bending of the nonlinear sound receiving pipeline effectively avoids wind noise from being directly transmitted to the sound receiving microphone, and the output amplitude of low-frequency wind noise in the transmission process is reduced by increasing the fluid reflection times. The front-end rectifying part can reduce wind resistance, reduce vortex phenomenon of wind flow and reduce wind noise in the input process.

Description

Bone conduction earphone with wind noise resistant structure

Technical Field

The utility model relates to the technical field of bone conduction earphone equipment, in particular to a bone conduction earphone with a wind noise resistant structure.

Background

The bone conduction earphone is made by using a bone conduction sound transmission mode, comprises a bone conduction sound production device used for producing sound, and compared with the traditional mode of transmitting sound through sound waves, the bone conduction sound transmission mode directly transmits vibration to an acoustic nerve through bones, so that a plurality of sound wave transmission steps are omitted, ears can be opened, eardrums are not damaged, and clear sound reduction can be realized in a noisy environment. It is widely appreciated by consumers in the sports consumer market because of its non-blocking properties to ambient sound and to ear canal health.

Compared with the common earphone, the bone conduction earphone is placed on the cheekbones in the front of the ear when in use, and directly conducts sound to the inner ear through the skull, so that the ears are always in an open state, any external environmental sound can not be influenced to enter the ear, and the noise transmission such as external environmental wind noise and the like is more direct in the movement process.

Chinese patent CN 202010446028.3 discloses a bone conduction earphone, which comprises a connecting piece, a first rotation adjusting mechanism and a first sound generating portion, wherein the connecting piece is used for supporting on the head or the ear of a wearer, the first rotation adjusting mechanism is connected with the connecting piece, the first sound generating portion is connected with the first rotation adjusting mechanism, and the first sound generating portion is used for being lapped on the tragus part on one side of the wearer. The first sound generating part is driven by the first rotation adjusting mechanism to rotate and press the tragus part on one side of the wearer, so that the tragus part seals the external auditory canal of the wearer.

Because of the characteristics of the open structure of the bone conduction earphone, when a call is conducted in a windy environment, the low frequency of wind noise can influence the sound receiving effect of the microphone, so that the voice call quality is reduced, and the user experience is reduced.

Disclosure of Invention

The utility model aims to at least solve the technical problems that the sound receiving effect of a microphone is affected by low frequency of wind noise when a call is conducted in a wind environment due to the characteristic of an open structure of a bone conduction earphone, so that the voice call quality is reduced and the user experience is reduced in the prior art. Therefore, the utility model provides the bone conduction earphone with the wind noise resistant structure, which optimizes a microphone sound receiving channel and reduces wind resistance, thereby improving the conversation quality and the user experience of the bone conduction earphone.

According to some embodiments of the utility model, the bone conduction earphone comprises an earphone shell, wherein a sound generating unit and a control panel are arranged in the earphone shell, and the control panel is electrically connected with the sound generating unit; comprising the following steps:

the sound receiving microphone is arranged on the control panel, a noise reduction structure is arranged at the position, corresponding to the sound receiving microphone, of the earphone shell, one end of the noise reduction structure faces the sound receiving microphone, and the other end of the noise reduction structure penetrates through the earphone shell to be communicated with the outside;

the noise reduction structure comprises a nonlinear sound receiving pipeline and a front-end rectifying part, one end of the nonlinear sound receiving pipeline faces the sound receiving microphone, the other end of the nonlinear sound receiving pipeline is provided with the front-end rectifying part, and the end face of the front-end rectifying part is attached to the surface radian of the earphone shell.

According to some embodiments of the utility model, the nonlinear radio channel comprises an air inlet channel and an air guide channel, wherein the air inlet channel is vertically communicated with the air guide channel, and the length of the air guide channel is longer than that of the air inlet channel; one end of the air guide pipeline faces the sound receiving microphone, and one end of the air inlet pipeline faces the front-end rectifying part.

According to some embodiments of the utility model, the diameter of the air inlet pipeline gradually increases from the front end rectifying part side to the air guide pipeline side, and the end with the smallest diameter of the air inlet pipeline is attached to the front end rectifying part.

According to some embodiments of the utility model, a channel diameter between the air guide duct and the acoustic microphone is tapered.

According to some embodiments of the utility model, the air guide pipeline is hollowed out towards one side of the control panel, a noise reduction sponge is arranged between the air guide pipeline and the control panel, the noise reduction sponge is tightly attached to the air guide pipeline, and the noise reduction sponge is subjected to hole digging treatment at positions corresponding to the air guide pipeline and the radio microphone.

According to some embodiments of the utility model, the end face of the front-end rectifying part is attached to the surface radian of the earphone shell, the front-end rectifying part comprises a woven steel mesh and a polyester tuning mesh, the polyester tuning mesh is located between the nonlinear radio pipeline and the woven steel mesh, and the pipe orifice of the nonlinear radio pipeline, the polyester tuning mesh and the woven steel mesh are attached in sequence.

According to some embodiments of the utility model, the surface curvature of the woven steel mesh matches the surface curvature of the earphone housing.

According to some embodiments of the utility model, the woven steel mesh is woven in a 3D reverse twill structure.

According to some embodiments of the utility model, the surface of the earphone housing on which the woven steel mesh is mounted is designed in a circular arc.

According to some embodiments of the utility model, the earphone housing is provided with a plug hole, which is connected with a connection wire.

According to the wind noise resistant structure bone conduction earphone provided by the embodiment of the utility model, the bone conduction earphone has at least the following beneficial effects: the noise reduction structure is arranged at the pick-up position of the sound receiving microphone, so that sound receiving quality can be optimized, and conversation quality is improved. The channel bending of the nonlinear sound receiving pipeline effectively avoids wind noise from being directly transmitted to the sound receiving microphone, and the output amplitude of low-frequency wind noise in the transmission process is reduced by increasing the fluid reflection times. The front-end rectifying part can reduce wind resistance, reduce vortex phenomenon of wind flow and reduce wind noise in the input process. Wind noise and low frequency output are reduced from the source and the transmission process, the pickup effect of equipment is effectively improved, and the conversation quality is improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a first perspective view of a bone conduction headset with a wind noise resistant structure according to an embodiment of the present utility model;

fig. 2 is a first cross-sectional view of a bone conduction headset with a wind noise resistant structure according to an embodiment of the present utility model;

FIG. 3 is a second cross-sectional view of a bone conduction headset with wind noise resistant structure according to an embodiment of the present utility model;

FIG. 4 is an enlarged schematic view of portion A of FIG. 2;

fig. 5 is a second perspective view of a bone conduction headset with a wind noise resistant structure according to an embodiment of the present utility model;

fig. 6 is a front-side air-blowing frequency decibel curve of a bone conduction earphone with an anti-wind-noise structure according to an embodiment of the present utility model;

fig. 7 is a graph showing a decibel plot of a lateral blow frequency of a bone conduction headset with a wind noise resistant structure according to an embodiment of the present utility model;

fig. 8 is a graph showing a decibel plot of a back side of a bone conduction headset with a wind noise resistant structure according to an embodiment of the present utility model.

Reference numerals:

a cambered surface steel net structural curve 10, a straight surface structural curve 20, a cambered surface structural curve 30,

Earphone shell 100, plug hole 101, sounding unit 110, control panel 120, sound receiving microphone 130, noise reduction sponge 140,

A nonlinear sound receiving pipeline 210, an air inlet pipeline 211, an air guide pipeline 212, a front end rectifying part 220, a woven steel mesh 221 and a polyester tuning mesh 222.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, top, bottom, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

A bone conduction headset with a wind noise resistant structure according to an embodiment of the present utility model is described below with reference to fig. 1 to 8.

As shown in fig. 1 to 8, the bone conduction earphone with the wind noise resistant structure comprises an earphone shell 100, a sound generating unit 110 and a control panel 120 are installed in the earphone shell 100, and the control panel 120 is electrically connected with the sound generating unit 110. The microphone 130 is disposed on the control panel 120, and the microphone 130 is electrically connected to the control panel 120. The sound receiving microphone 130 receives an external sound source input, processes the external sound source input through the control panel 120, and outputs the processed external sound source input to the sound generating unit 110, and the sound generating unit 110 generates sound through vibration.

In order to reduce wind noise of the sound receiving microphone 130, a noise reduction structure is disposed at a position of the earphone housing 100 corresponding to the sound receiving microphone 130, one end of the noise reduction structure faces the sound receiving microphone 130, and the other end penetrates through the earphone housing 100 to be communicated with the outside. The external sound source is received by the sound receiving microphone 130 after the physical noise reduction processing of the noise reduction structure, and then is finally output to the sound generating unit 110 after the software noise reduction processing of the control panel 120. The radio microphone 130 reduces the frequency sensitivity attenuation by high-pass filtering, thereby reducing the output amplitude of low-frequency wind noise, which is a well-known solution to those skilled in the art, and will not be described in detail in this embodiment.

According to the utility model, the conversation quality of the bone conduction earphone is improved by optimizing the physical noise reduction part. Specifically, the noise reduction structure includes a nonlinear sound receiving pipe 210 and a front end rectifying portion 220, one end of the nonlinear sound receiving pipe 210 faces the sound receiving microphone 130, the other end is provided with the front end rectifying portion 220, the nonlinear sound receiving pipe 210 is used for preventing wind from directly blowing the sound receiving microphone 130, and the front end rectifying portion 220 is used for reducing the air inlet quantity and reducing the wind resistance coefficient. In the present utility model, the nonlinear radio pipe 210 may be an L-shaped radio pipe structure or an S-shaped radio pipe structure, and the shape of the nonlinear radio pipe 210 is not described in detail, and it should be understood that the shape of the nonlinear radio pipe 210 is flexibly changed without departing from the basic concept of the present utility model, and the nonlinear radio pipe 210 is considered to be within the scope of protection defined by the present utility model.

The acoustic wave transmission path is extended by the nonlinear acoustic pickup pipe 210, the wind is prevented from blowing straight through the acoustic pickup microphone 130, and the low frequency output amplitude of wind noise is reduced by reflection of acoustic waves in the pipe. The front-end rectifying portion 220 can effectively reduce the eddy current phenomenon generated when wind enters the nonlinear sound receiving pipeline 210, and effectively reduce the low frequency of wind noise.

In the frequency response decibel curve, the structure of the utility model is an arc-surface steel mesh structural curve 10, and the comparison group is a straight-surface structural curve 20 and an arc-surface structural curve 30.

As shown in fig. 7, in the test of the bone conduction headset side blowing, the cambered surface steel mesh structural curve 10 sound full frequency band optimization is close to 5dB, and the frequency band optimization is close to 3dB at 300Hz-2500 Hz. As shown in fig. 6, in the test of the front blowing, the cambered surface steel wire net structural curve 10 is optimized to be close to 3dB-5dB in the frequency band of 300Hz-4000 Hz. As shown in fig. 8, in the back blowing test, the cambered surface steel wire net structural curve 10 was optimized to be close to 10dB in the frequency band of 300Hz-4000 Hz. Through the noise reduction structure, the physical noise reduction structure can effectively reduce the wind noise input of the radio microphone 130, and can provide better conversation quality for users, improve the voice definition and improve the user experience by matching with the noise reduction processing of the back-end software.

In some embodiments of the present utility model, as shown in fig. 2-4, the nonlinear acoustic duct 210 includes an air intake duct 211 and an air guide duct 212, the air intake duct 211 being in vertical communication with the air guide duct 212, the air guide duct 212 having a length greater than the air intake duct 211. One end of the air guide pipe 212 faces the sound receiving microphone 130, and one end of the air inlet pipe 211 faces the front rectifying part 220.

Specifically, the air inlet pipe 211 is a pipe penetrating through the side wall of the earphone housing 100, the air guide pipe 212 is formed by grooving the inner wall of the earphone housing 100, the two pipes are vertically connected and communicated, and the acoustic microphone 130 is located at the end of the air guide pipe 212. When external sound waves pass through the front-end rectifying part 220 and enter the nonlinear sound receiving pipeline 210 to be transmitted, the corners of the air inlet pipeline 211 and the air guide pipeline 212 are touched first, and the wind noise is prevented from being directly blown into the sound receiving microphone 130 to form interference. The sound waves are reflected at the corners and then transmitted through the long channels of the air guide duct 212 and finally enter the radio microphone 130.

In some embodiments of the present utility model, as shown in fig. 2 to 4, the diameter of the air inlet pipe 211 gradually increases from the front rectifying portion 220 side to the air guide pipe 212 side, and the end of the air inlet pipe 211 having the smallest diameter is fitted to the front rectifying portion 220.

Specifically, the diameter of the air intake duct 211 is gradually increased, that is, the cross-sectional area is increased, and when the wind enters the air intake duct 211, the flow velocity is reduced, the low frequency output amplitude of the wind noise is reduced, and the wind noise is reduced.

In some embodiments of the present utility model, as shown in fig. 2-4, the channel diameter between the air guide duct 212 and the radio microphone 130 gradually decreases. Specifically, the channel diameter between the air guide channel 212 and the sound pickup microphone 130 is narrowed, so that the sound waves are more concentrated, and the sound pickup accuracy of the sound pickup microphone 130 is improved.

In some embodiments of the present utility model, as shown in fig. 2-4, a side of the air guide pipeline 212 facing the control panel 120 is hollowed out, a noise reduction sponge 140 is disposed between the air guide pipeline 212 and the control panel 120, the noise reduction sponge 140 is tightly attached to the air guide pipeline 212, and the noise reduction sponge 140 is hollowed out corresponding to positions of the air guide pipeline 212 and the radio microphone 130.

Specifically, in order to reduce low-frequency noise during the transmission process of the air guide pipeline 212, the noise reduction sponge 140 is tightly attached to the hollowed side of the air guide pipeline 212, so that the earphone shell 100 and the noise reduction sponge 140 form a channel of the air guide pipeline 212. The noise reduction sponge 140 can effectively absorb wind noise, and further reduce noise.

In some embodiments of the present utility model, as shown in fig. 2-4, the end surface of the front rectifying portion 220 is disposed to conform to the surface curvature of the earphone housing 100. Specifically, the front-end rectifying portion 220 includes a woven steel mesh 221 and a polyester tuning mesh 222, the polyester tuning mesh 222 is located between the nonlinear radio pipe 210 and the woven steel mesh 221, and the pipe orifice of the nonlinear radio pipe 210, the polyester tuning mesh 222 and the woven steel mesh 221 are sequentially attached. The polyester tuning net 222 is made of polyester, and is a well known technical solution for those skilled in the art, and will not be described in detail in this embodiment.

Specifically, the woven steel mesh 221 is embedded into the inner wall of the earphone housing 100, the polyester tuning mesh 222 is attached to the inner wall of the woven steel mesh 221, and the orifice of the air inlet pipe 211 of the non-linear radio pipe 210 is attached to the polyester tuning mesh 222. The polyester tuning net 222 can enable sound wave transmission to be more uniform, the woven steel net 221 can weaken vortex phenomenon generated by wind current, the polyester tuning net 222 and the woven steel net 221 work to reduce wind resistance, and wind noise is reduced from the source.

In some embodiments of the present utility model, as shown in fig. 1-3, the surface curvature of the woven steel mesh 221 matches the surface curvature of the earphone housing 100. Specifically, the surface radians of the surface ironing earpiece housing 100 of the woven steel mesh 221 are matched with each other, so that the appearance of the bone conduction earpiece is smoother, and hands are avoided.

In some embodiments of the present utility model, knitted steel mesh 221 is knitted in a 3D reverse twill structure. Specifically, the woven steel mesh 221 is woven by adopting 3D steel wires, that is, the cross section of the steel wire of the woven steel mesh is circular or elliptical, so that the resistance of wind passing through the woven steel mesh 221 can be reduced, and the noise can be reduced. And each mesh of the woven steel mesh 221 is in a prismatic structure by twill weaving, so that the area of the mesh is reduced, and impurities such as dust are prevented from falling into the woven steel mesh 221.

In some embodiments of the present utility model, as shown in fig. 1-3, the surface of the earphone housing 100 to which the woven steel mesh 221 is mounted is designed in a circular arc. Specifically, the outer surface of the bone conduction earphone housing 100 is made smoother, air flow resistance is reduced, and wind noise is reduced.

In some embodiments of the present utility model, as shown in fig. 5, the earphone housing 100 is provided with a jack 101, and the jack 101 is connected with a connection wire. Specifically, the power supply cable or the data cable is connected to the control panel 120 through the jack 101, and the jack 101 is a technical solution well known to those skilled in the art, which is not described in detail in this embodiment.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The bone conduction earphone with the wind noise resistant structure comprises an earphone shell (100), wherein a sound generating unit (110) and a control panel (120) are arranged in the earphone shell (100), and the control panel (120) is electrically connected with the sound generating unit (110); characterized by comprising the following steps:

the sound receiving microphone (130) is arranged on the control panel (120), a noise reduction structure is arranged at the position, corresponding to the sound receiving microphone (130), of the earphone shell (100), one end of the noise reduction structure faces the sound receiving microphone (130), and the other end of the noise reduction structure penetrates through the earphone shell (100) to be communicated with the outside;

the noise reduction structure comprises a nonlinear sound receiving pipeline (210) and a front-end rectifying part (220), one end of the nonlinear sound receiving pipeline (210) faces the sound receiving microphone (130), and the front-end rectifying part (220) is arranged at the other end of the nonlinear sound receiving pipeline.

2. The bone conduction headset of claim 1, wherein the non-linear acoustic conduit (210) comprises an air inlet conduit (211) and an air guide conduit (212), the air inlet conduit (211) being in vertical communication with the air guide conduit (212), the air guide conduit (212) having a length greater than the air inlet conduit (211); one end of the air guide pipeline (212) faces the sound receiving microphone (130), and one end of the air inlet pipeline (211) faces the front-end rectifying part (220).

3. The bone conduction headset of claim 2, wherein the diameter of the air intake duct (211) gradually increases from the front-end rectifying portion (220) side to the air guide duct (212) side, and the end of the air intake duct (211) with the smallest diameter is attached to the front-end rectifying portion (220).

4. The bone conduction headset of claim 2, wherein a channel diameter between the air guide duct (212) and the acoustic microphone (130) is tapered.

5. The bone conduction headset of claim 2, wherein the air guide pipe (212) is hollowed out towards one side of the control panel (120), a noise reduction sponge (140) is arranged between the air guide pipe (212) and the control panel (120), the noise reduction sponge (140) is tightly attached to the air guide pipe (212), and the noise reduction sponge (140) corresponds to the air guide pipe (212) and the position hole digging treatment of the radio microphone (130).

6. The wind noise resistant structure bone conduction earphone of claim 1, wherein the end face of the front end rectifying portion (220) is attached to the surface radian of the earphone housing (100), the front end rectifying portion (220) comprises a woven steel mesh (221) and a polyester tuning mesh (222), the polyester tuning mesh (222) is located between the nonlinear sound receiving pipeline (210) and the woven steel mesh (221), and the pipe orifice of the nonlinear sound receiving pipeline (210), the polyester tuning mesh (222) and the woven steel mesh (221) are attached in sequence.

7. The bone conduction headset of claim 6, wherein the surface curvature of the woven steel mesh (221) matches the surface curvature of the headset housing (100).

8. The wind noise resistant structural bone conduction headset of claim 6 wherein said woven steel mesh (221) is woven in a 3D reverse twill weave.

9. The bone conduction headset of claim 6, wherein the surface of the headset housing (100) on which the woven steel mesh (221) is mounted is of a circular arc design.

10. The bone conduction headset of wind noise resistant construction according to any one of claims 1 to 9, wherein the headset housing (100) is provided with a plug hole (101), the plug hole (101) being connected with a connection wire.