CN213152322U - Leading note pipe and bluetooth headset - Google Patents

Abstract

The application relates to the technical field of earphones, and provides a sound guide tube and a Bluetooth earphone. The sound guide pipe is provided with a sound guide channel which is arranged along the axial direction in a penetrating mode, the sound guide channel is used for transmitting audio to the auditory meatus and is also used for transmitting noise signals in the auditory meatus to the noise reduction microphone, at least one ring sound hole which is arranged along the radial direction in a penetrating mode and is used for communicating the sound guide channel to the outside is formed in the inner surface of the sound guide pipe, the ring sound hole is used for enabling the audio to surround the auditory meatus and is also used for transmitting the noise signals outside the auditory meatus to the noise reduction microphone. The sound guide tube can enable the audio frequency conducted through the sound hole to form a surrounding sound effect relative to the audio frequency conducted through the sound guide channel, and the whole listening feeling is influenced; the noise reduction microphone is also beneficial to integrating noise signals inside and outside the auditory canal so as to send out a sound signal with a phase opposite to that of the noise signal after processing the noise signal, thereby realizing audio tuning; therefore, the overall sound effect of the audio conducted by the sound guide tube can be improved, and the sound quality of the earphone applying the sound guide tube is effectively improved.

Description

Leading note pipe and bluetooth headset

Technical Field

This application belongs to earphone technical field, especially relates to a leading note pipe and bluetooth headset.

Background

The earpiece typically focuses and conducts the audio through a sound guide tube into the ear canal. However, the audio conducted by the traditional sound guide tube generally has the problem of poor sound effect.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the present application is to provide a sound guide tube to solve the technical problem that the audio conducted by the existing sound guide tube has a poor sound effect.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the utility model provides a sound guide tube, is applicable to the earphone that can wear in the duct, the earphone in sound guide tube deviates from one side of duct is equipped with the miaow of making an uproar, sound guide tube has the sound guide channel who link up the setting along the axial, sound guide channel be used for to the duct conduction audio frequency, and still be used for to fall the miaow conduction of making an uproar noise signal in the duct, sound guide tube has seted up at least one in its inner surface and has radially link up the setting and be used for with sound guide channel communicates to outside ring sound hole, ring sound hole is used for making the audio frequency encircle in the duct, and still be used for to fall the miaow conduction of making an uproar noise outside the duct noise signal.

In one embodiment, the sound guide tube comprises a sleeving structure and a limiting structure which are sequentially connected along the axial direction, the sleeving structure is used for being matched with the earplug of the earphone in a sleeving manner, the limiting structure is arranged opposite to the outer edge of the sleeving structure in an outward extending manner and used for limiting the earplug to be separated from the sleeving structure when no external force acts on the earplug, and the sound surrounding hole is formed in the sleeving structure.

In one embodiment, the ring sound hole is formed in one side of the sleeve structure, which is connected with the limiting structure, the sleeve structure is provided with a ring sound groove on the outer surface thereof, one end of the ring sound groove is communicated with the ring sound hole, the other end of the ring sound groove extends to one side of the sleeve structure, which is away from the limiting structure, the ring sound groove and the ring sound hole form a ring sound channel together, and the ring sound channel is used for enabling the audio frequency to surround the auditory canal and is also used for transmitting a noise signal outside the auditory canal to the noise reduction microphone.

In one embodiment, the extension direction of the ring groove is parallel to the extension direction of the sound guide channel.

In one embodiment, the sound guide tube further includes a sound guide structure connected to one end of the sleeve structure away from the limiting structure and aligned with the other end of the sound surrounding groove, the sound guide structure is abutted to the earplug and vertically extends outwards relative to the sleeve structure, a sound guide groove communicated with the sound surrounding groove is formed in a side surface of the sound guide structure facing the earplug, and the sound guide groove, the sound surrounding groove and the sound surrounding hole form the sound surrounding channel together.

An object of the embodiment of this application still lies in providing a bluetooth headset, include the casing, locate fall the miaow of making an uproar in the casing and be used for wearing in the earplug of duct, bluetooth headset still includes the leading note pipe, the leading note pipe with the casing is connected, the leading note pipe deviates from fall the one side of making an uproar the miaow with the earplug cup joints the cooperation.

In one embodiment, the bluetooth headset further comprises a damping filter screen arranged on one side, away from the shell, of the sound guide channel, wherein the damping filter screen is used for tuning and preventing external dust from entering the sound guide channel.

In one embodiment, the bluetooth headset further comprises a sound guiding waterproof net arranged on one side, away from the shell, of the sound guiding channel and a ring sound waterproof net attached to the inner surface of the sound guiding channel and aligned with the ring sound hole, and the sound guiding waterproof net and the ring sound waterproof net are both used for preventing external water from entering the sound guiding channel.

In one embodiment, the noise reduction microphone is in plug fit with the sound guide channel.

In one embodiment, the axis of the noise reduction microphone coincides with the axis of the sound guide tube.

The application provides beneficial effect lies in:

when the sound guide tube provided by the embodiment of the application is used for transmitting audio to an auditory canal, the audio can be directly transmitted into the auditory canal through the sound guide channel which is arranged in a penetrating way along the axial direction, so that the basic transmission effect of the audio is ensured, the audio can be transmitted to the peripheral side of the sound guide tube through the sound guide channel which is communicated to the outside along the radial direction, and therefore the audio transmitted through the sound guide channel can form a surrounding sound effect relative to the audio transmitted through the sound guide channel, the integral hearing sense is influenced, the sound effect of the audio transmitted by the sound guide tube is improved to a certain extent, and the sound quality of an earphone using the sound guide tube is improved;

and when being used for to falling the miaow conduction noise signal of making an uproar, the accessible link up the noise signal that sets up along the axial and collect the interior ear canal to through radially communicating the sound conduction passageway to the outside ring sound hole and collect the noise signal outside the ear canal, thereby can do benefit to and fall the miaow and integrate the interior noise signal with the ear canal outside through the sound conduction pipe in the lump of making an uproar, and can send the sound signal opposite with the noise signal phase behind the noise signal after the miaow processing of making an uproar that makes an uproar is integrated, in order to offset the noise signal, thereby can effectively improve the sound quality of the earphone that has used this sound conduction pipe.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a sound guide tube according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of the sound guide tube shown in FIG. 1;

fig. 3 is a perspective cross-sectional view of a bluetooth headset according to an embodiment of the present application;

fig. 4 is a schematic diagram of a part of the structure of the bluetooth headset provided in fig. 3;

fig. 5 is an exploded view of a portion of the structure of the bluetooth headset provided in fig. 4.

Wherein, in the figures, the respective reference numerals:

100-sound guide tube, 101-sound guide channel, 102-sound ring hole, 103-sound ring groove, 104-sound through groove, 110-socket structure, 120-limit structure and 130-sound through structure; 200-shell, 300-earplug, 310-connecting structure, 320-ear sleeve, 400-damping filter screen, 500-sound-guiding waterproof screen, 600-sound-surrounding waterproof screen, 700-noise-reducing microphone and 800-adhesive element.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be structurally related or interoperable between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Specific implementations of the present application are described in more detail below with reference to specific embodiments:

referring to fig. 1, 2 and 3, an embodiment of the present application provides a sound guide tube 100, where the sound guide tube 100 is suitable for an earphone capable of being worn in an ear canal, a noise reduction microphone 700 is disposed on a side of the sound guide tube 100 away from the ear canal, the sound guide tube 100 has a sound guide channel 101 axially penetrating therethrough, the sound guide channel 101 is used for conducting audio to the ear canal and conducting a noise signal in the ear canal to the noise reduction microphone 700, the sound guide tube 100 has at least one annular sound hole 102 radially penetrating therethrough and communicating the sound guide channel 101 to the outside on an inner surface thereof, and the annular sound hole 102 is used for allowing the audio to surround the ear canal and conducting a noise signal outside the ear canal to the noise reduction microphone 700.

Here, one end side of the sound guide tube 100 close to the noise reduction microphone 700 is also close to an audio playback structure such as a speaker, the other end side is close to the ear canal of the user, and the sound guide channel 101 extends straight from one end side of the sound guide tube 100 to the other end side of the sound guide tube 100 in the axial direction. The annular sound hole 102 penetrates from the inner surface of the sound guide tube 100 to the outer surface of the sound guide tube 100, that is, the sound guide channel 101 and the outside are communicated, and the extending direction of the annular sound hole 102 is the radial direction of the sound guide tube 100.

Based on the above structure, when the audio playback structure such as a speaker plays back audio, the audio can be gathered from one end side of the sound guide tube 100 and conducted to the other end side of the sound guide tube 100 through the sound guide channel 101 axially disposed through the sound guide tube 100 to be directly conducted into the ear canal, thereby facilitating to secure a basic conducting effect of the audio. Meanwhile, when the audio passes through the ring sound hole 102, part of the audio can be transmitted to the peripheral side of the sound guiding tube 100 through the ring sound hole 102, so that the audio transmitted by the ring sound hole 102 and the audio transmitted by the sound guiding channel 101 can present a surrounding sound playback effect in the ear canal, thereby affecting the overall listening feeling.

When a noise signal exists in the ear canal or outside the ear canal, the noise signal in the ear canal can be collected by the noise reduction microphone 700 through the sound guide channel 101, and the noise signal outside the ear canal can enter the sound guide channel 101 through the annular sound hole 102 and be collected by the noise reduction microphone 700.

To sum up, when the sound guide tube 100 provided in the embodiment of the present application is used for transmitting audio to the ear canal, the audio can be directly transmitted into the ear canal through the sound guide channel 101 axially disposed through, so as to ensure the basic transmission effect of the audio, and the audio can be transmitted to the peripheral side of the sound guide tube 100 through the ring sound hole 102 radially communicating the sound guide channel 101 to the outside, so that the audio transmitted through the ring sound hole 102 can form a surrounding sound effect relative to the audio transmitted through the sound guide channel 101, thereby affecting the overall listening sensation, further improving the sound effect of the audio transmitted through the sound guide tube 100 to a certain extent, and facilitating to improve the sound quality of the earphone applying the sound guide tube 100;

when the noise reduction microphone 700 is used for conducting noise signals, the noise signals in the ear canal can be collected through the sound guide channel 101 which is arranged in a penetrating mode along the axial direction, the noise signals outside the ear canal can be collected through the ring sound hole 102 which radially communicates the sound guide channel 101 to the outside, therefore, the noise reduction microphone 700 can be favorably integrated with the noise signals inside and outside the ear canal through the sound guide tube 100, sound signals with the phase opposite to that of the noise signals can be emitted after the noise reduction microphone 700 processes the integrated noise signals, the noise signals can be offset, and the sound quality of an earphone using the sound guide tube 100 can be effectively improved.

In addition, when a user wears the earphone in the ear canal, discomfort often occurs due to the difference between the air pressure inside and outside the ear canal, and through the sound guide tube 100 provided in this embodiment, the air flows inside and outside the ear canal can be conducted through the sound guide channel 101 and the ring sound hole 102 communicated with the sound guide channel 101, so that the air pressure inside and outside the ear canal is balanced, and the wearing comfort of the earphone using the sound guide tube 100 can be improved to a certain extent.

Referring to fig. 1, 2 and 3, in the present embodiment, the sound guiding tube 100 includes a socket structure 110 and a limiting structure 120 sequentially connected along an axial direction, the socket structure 110 is used for being in socket fit with an earplug 300 of an earphone, the limiting structure 120 extends outward relative to an outer edge of the socket structure 110 and is used for limiting the earplug 300 to be separated from the socket structure 110 when no external force is applied, and the ring sound hole 102 is disposed on the socket structure 110.

It should be noted that the earplug 300 includes a connecting structure 310 for fitting with the fitting structure 110, and an ear sleeve 320 connected to the connecting structure 310 and adapted to be worn in the ear canal. When the socket structure 110 is elastically fitted with the connection structure 310, the limiting structure 120 can stop the connection structure 310 to limit the connection structure 310 from moving toward one side close to the ear canal relative to the socket structure 110, so that the connection stability between the earplug 300 and the sound guiding tube 100 can be ensured, the earplug 300 can be effectively limited from being separated from the sound guiding tube 100, and the use performance of the earphone can be ensured by reducing the risk of losing the earplug 300.

It should be further noted that, by disposing the annular sound hole 102 on the sleeve structure 110, on one hand, the structural strength of the limiting structure 120 can be prevented from being greatly affected, so as to further ensure the connection stability between the earplug 300 and the sound guiding tube 100; on one hand, the sound hole 102 can be beneficial to transmitting the audio to the peripheral side of the sound guide tube 100 and the peripheral side of the earplug 300, so that the audio transmitted by the sound hole 102 and the audio transmitted by the sound guide channel 101 can be further promoted to present a stereo surrounding sound playback effect in the ear canal, the sound effect of the audio transmitted by the sound guide tube 100 is further improved, and the sound quality of the earphone applying the sound guide tube 100 is further improved; on one hand, the sound hole 102 can collect the noise signals around the sound guide tube 100 and around the earplug 300, so that the noise reduction microphone 700 can integrate the noise signals in the ear canal, around the sound guide tube 100 and around the earplug 300 through the sound guide tube 100, and send out the sound signal with the phase opposite to that of the noise signal after processing the integrated noise signal to offset the noise signal, thereby effectively improving the sound quality of the earphone using the sound guide tube 100.

Referring to fig. 1, 2, and 3, in the present embodiment, the ring sound hole 102 is disposed on a side of the socket structure 110 connected to the limiting structure 120, the socket structure 110 has a ring sound groove 103 formed on an outer surface thereof, one end of the ring sound groove 103 is connected to the ring sound hole 102, the other end extends to a side of the socket structure 110 away from the limiting structure 120, the ring sound groove 103 and the ring sound hole 102 form a ring sound channel together, and the ring sound channel is used for allowing an audio frequency to surround an ear canal and further for transmitting a noise signal outside the ear canal to the noise reduction microphone 700.

It should be noted that, by disposing the ring sound hole 102 at the side where the sleeve structure 110 is connected to the limiting structure 120, the time difference between the audio transmitted by the ring sound hole 102 and the audio transmitted by the sound guiding channel 101 entering the ear canal can be correspondingly shortened, so that the audio transmitted by the ring sound hole 102 and the audio transmitted by the sound guiding channel 101 can be substantially overlapped on the basis of promoting the audio transmitted by the ring sound hole 102 and the audio transmitted by the sound guiding channel 101 to present a stereo surround sound playback effect in the ear canal, thereby avoiding the separation of the audio transmitted by the ring sound hole 102 and the audio transmitted by the sound guiding channel 101, further improving the sound effect of the audio transmitted by the sound guiding tube 100, and further improving the sound quality of the earphone applying the sound guiding tube 100.

It should be noted that, since the ring sound hole 102 is disposed on the socket structure 110, the audio and noise signals to be transmitted through the ring sound hole 102 may be blocked by the connecting structure 310 engaging with the socket structure 110, which may affect the overall sound effect. On the basis, the present embodiment further provides the ring sound groove 103, so as to form a ring sound channel through the ring sound groove 103 and the ring sound hole 102, and on one hand, the ring sound channel can transmit the audio to the peripheral side of the sound guiding tube 100 and the peripheral side of the earplug 300, so that the audio transmitted by the ring sound hole 102 and the audio transmitted by the sound guiding channel 101 can be further promoted to present a stereo surrounding sound playback effect in the ear canal, the sound effect of the audio transmitted by the sound guiding tube 100 is further improved, and the sound quality of the earphone applying the sound guiding tube 100 is further improved; on the other hand, the noise signals around the sound guide tube 100 and around the earplug 300 can be effectively and reliably collected through the sound loop channel, so that the noise reduction microphone 700 can be facilitated to effectively integrate the noise signals in the ear canal, around the sound guide tube 100 and around the earplug 300 through the sound guide tube 100, and emit a sound signal with a phase opposite to that of the noise signal after processing the integrated noise signal to cancel the noise signal, thereby effectively improving the sound quality of the earphone to which the sound guide tube 100 is applied.

Referring to fig. 1, fig. 2 and fig. 3, in the present embodiment, the extending direction of the ring groove 103 is parallel to the extending direction of the sound guide channel 101. By adopting the above scheme, on one hand, the phenomena of obvious reflection and echo of the audio and the noise signal in the process of transmitting along the ring sound groove 103 can be effectively avoided, so that the sound playback effect of the audio and the collection effect of the noise signal can be further ensured and improved, and the sound quality of the earphone applying the sound guide tube 100 can be further improved; on the other hand, the propagation path of the audio frequency can be correspondingly shortened, so that the time difference between the audio frequency conducted by the ring sound hole 102 and the audio frequency conducted by the sound conduction channel 101 entering the ear canal can be correspondingly shortened, and the sound quality of the earphone applying the sound conduction tube 100 can be further improved.

Referring to fig. 1, fig. 2 and fig. 3, in the present embodiment, the sound guiding tube 100 further includes a sound communicating structure 130 connected to one end of the socket structure 110 away from the limiting structure 120 and aligned with the other end of the ring sound groove 103, the sound communicating structure 130 abuts against the earplug 300 and extends perpendicularly and outwardly relative to the socket structure 110, a sound communicating groove 104 communicating with the ring sound groove 103 is disposed on a side surface of the sound communicating structure 130 facing the earplug 300, and the sound communicating groove 104, the ring sound groove 103 and the ring 102 form a ring sound channel together.

It should be noted that, the sound passing structure 130 abuts against the connecting structure 310 of the earplug 300, and is disposed to protrude outward relative to the connecting structure 310, and one end of the sound passing groove 104, which is opened on a side of the sound passing structure 130 facing the earplug 300 and deviates from the sound encircling groove 103, is connected between the connecting structure 310 and the ear muff 320, and based on the arrangement of the sound passing groove 104, the possibility that the audio frequency conducted by the sound encircling hole 102 is blocked and phagocytosed by the connecting structure 310 which is in muff-coupling fit with the muff-coupling structure 110 can be further reduced.

Therefore, through the ring sound channel formed by the sound through groove 104, the ring sound groove 103 and the ring sound hole 102, on one hand, the audio can be conducted between the sound guide tube 100 and the ear sleeve 320, so that the audio conducted by the ring sound hole 102 and the audio conducted by the sound guide channel 101 can be further promoted to present a stereo surrounding sound playback effect in the ear canal, the sound effect of the audio conducted by the sound guide tube 100 is further improved, and the sound quality of the earphone applying the sound guide tube 100 is further improved; on the other hand, the noise signals around the sound guide tube 100 and around the earplug 300 can be effectively and reliably collected, so that the noise reduction microphone 700 can be facilitated to effectively integrate the noise signals in the ear canal, around the sound guide tube 100 and around the earplug 300 through the sound guide tube 100, and emit a sound signal with a phase opposite to that of the noise signal after processing the integrated noise signal to cancel the noise signal, thereby further improving the sound quality of the earphone to which the sound guide tube 100 is applied.

Referring to fig. 3, an embodiment of the present invention further provides a bluetooth headset, where the bluetooth headset includes a housing 200, a noise reduction microphone 700 disposed in the housing 200, an earplug 300 for being worn in an ear canal, and the sound guide tube 100, the sound guide tube 100 is connected to the housing 200, and a side of the sound guide tube 100 away from the noise reduction microphone 700 is in sleeve fit with the earplug 300. Through adopting the leading note pipe 100 that above-mentioned embodiment is related, can be based on leading note pipe 100 conduction audio frequency and can demonstrate the sound playback effect of three-dimensional encircleing in the duct, still can integrate the noise signal in the duct and outside the duct together based on leading note pipe 100 to realize the tuning, thereby can effectively improve bluetooth headset's sound quality.

Referring to fig. 3, 4 and 5, in the present embodiment, the bluetooth headset further includes a damping filter 400 disposed on a side of the sound guide channel 101 away from the housing 200, where the damping filter 400 is used for tuning and preventing external dust from entering the sound guide channel 101.

It should be noted here that the damping filter 400 is clamped at the port of the sound guide channel 101 facing the ear canal, and through the arrangement of the damping filter 400, on one hand, the damping of the sound guide channel can be adjusted by selecting the damping filters 400 with different densities and different meshes, so as to realize the filtering and tuning of audio, thereby adjusting the overall hearing sense and improving the sound quality of the bluetooth headset to a certain extent; on the other hand, it still can prevent effectively that outside dust, earwax from getting into leading in the sound passageway 101 to can ensure leading the audio frequency conduction effect of sound passageway 101, can improve bluetooth headset's sound quality.

Referring to fig. 3, 4 and 5, in the present embodiment, the bluetooth headset further includes a sound guiding waterproof net 500 disposed on a side of the sound guiding channel 101 away from the casing 200, and a ring sound waterproof net 600 attached to an inner surface of the sound guiding channel 101 and aligned with the ring sound hole 102, where the sound guiding waterproof net 500 and the ring sound waterproof net 600 are both used for preventing external water from entering the sound guiding channel 101.

It should be noted that the sound-guiding waterproof net 500 is clamped at the port of the sound-guiding channel 101 on the side facing the ear canal and is attached to the damping filter 400, and optionally, the sound-guiding waterproof net 500 is disposed on the side of the damping filter 400 away from the ear canal. Can prevent effectively that moisture from getting into through leading waterproof net 500 of sound and leading in the sound passageway 101 to can ensure the audio frequency conduction effect of leading sound passageway 101, can improve bluetooth headset's sound quality, still can ensure and prolong bluetooth headset's life.

It should be further noted that the ring sound waterproof net 600 is attached to the inner surface of the sound guide channel 101 and aligned with the ring sound hole 102, and through the arrangement of the ring sound waterproof net 600, external water can be effectively prevented from entering the sound guide channel 101 along the ring sound hole 102, so that the audio conduction effect of the sound guide channel 101 can be guaranteed, the sound quality of the bluetooth headset can be improved, and the service life of the bluetooth headset can be guaranteed and prolonged.

Referring to fig. 3, 4 and 5, in the present embodiment, the noise reduction microphone 700 is inserted into the sound guide channel 101. By adopting the scheme, when the audio frequency is about to pass through the sound guide channel 101, the noise reduction microphone 700 which is in inserted connection and matching with the sound guide channel 101 is used for carrying out noise reduction processing on the audio frequency, so that the sound quality of the Bluetooth headset is ensured and improved; when a noise signal is about to enter the casing 200, the noise signal is collected and offset by the noise reduction microphone 700 inserted and matched with the sound guide channel 101, so that the sound quality of the Bluetooth headset can be further ensured and improved. Optionally, the noise reduction microphone 700 and the sound guide tube 100 are stably connected by the adhesive member 800.

Referring to fig. 3, 4 and 5, in the present embodiment, the axis of the noise reduction microphone 700 coincides with the axis of the sound guide tube 100. By adopting the above scheme, the sound signals received and emitted by the noise reduction microphone 700 can be changed most uniformly, and the noise reduction effect is optimal.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a sound guide tube, is applicable to the earphone that can wear in the duct, the earphone in sound guide tube deviates from one side of duct is equipped with the miaow of making an uproar, its characterized in that, sound guide tube has the sound guide channel who link up the setting along the axial, sound guide channel be used for to the duct conduction audio frequency, and still be used for to the miaow conduction of making an uproar noise signal in the duct, sound guide tube sets up at least one in its inner surface and radially link up the setting and be used for with sound guide channel communicates to outside ring sound hole, the ring sound hole is used for making the audio frequency encircle in the duct, and still be used for to the miaow conduction of making an uproar noise outside the duct noise signal.

2. The sound guide tube according to claim 1, wherein the sound guide tube comprises a socket structure and a limiting structure, which are sequentially connected in an axial direction, the socket structure is configured to be in socket fit with an earplug of the earphone, the limiting structure extends outward relative to an outer edge of the socket structure and is configured to limit the earplug to be separated from the socket structure when no external force is applied, and the sound ring hole is disposed on the socket structure.

3. The sound guide tube according to claim 2, wherein the ring sound hole is formed on a side of the sleeve structure connected to the limiting structure, the sleeve structure has a ring sound groove formed on an outer surface thereof, one end of the ring sound groove is connected to the ring sound hole, and the other end of the ring sound groove extends to a side of the sleeve structure away from the limiting structure, the ring sound groove and the ring sound hole together form a ring sound channel, and the ring sound channel is used for allowing the audio frequency to surround the ear canal and further for transmitting a noise signal outside the ear canal to the noise reduction microphone.

4. The sound guide tube of claim 3, wherein the extension direction of the ringing groove is parallel to the extension direction of the sound guide channel.

5. The sound guide tube according to claim 3, further comprising a sound guide structure connected to one end of the socket structure away from the limiting structure and aligned with the other end of the sound surrounding groove, wherein the sound guide structure abuts against the earplug and extends perpendicularly and outwardly relative to the socket structure, the sound guide structure is provided with a sound guide groove on a side surface facing the earplug, the sound guide groove is communicated with the sound surrounding groove, and the sound guide groove, the sound surrounding groove and the sound surrounding hole together form the sound surrounding channel.

6. A Bluetooth headset, comprising a shell, a noise reduction microphone arranged in the shell, and an earplug for being worn in an ear canal, wherein the Bluetooth headset further comprises the sound guide tube as claimed in any one of claims 1 to 5, the sound guide tube is connected with the shell, and a side of the sound guide tube facing away from the noise reduction microphone is in sleeve fit with the earplug.

7. The bluetooth headset of claim 6, further comprising a damping filter disposed on a side of the sound guide channel facing away from the housing, the damping filter being adapted to tune and prevent external dust from entering the sound guide channel.

8. The bluetooth headset according to claim 6, wherein the bluetooth headset further comprises a sound-guiding waterproof net disposed on a side of the sound-guiding channel away from the housing, and a ring sound-proof net attached to an inner surface of the sound-guiding channel and aligned with the ring sound hole, wherein the sound-guiding waterproof net and the ring sound-proof net are both configured to prevent external water from entering the sound-guiding channel.

9. The bluetooth headset according to claim 6, wherein the noise reduction microphone is in plug-in engagement with the sound guide channel.

10. The bluetooth headset according to claim 9, wherein an axis of the noise reduction microphone coincides with an axis of the sound guide tube.

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