CN210183496U

CN210183496U - Air conduit earphone

Info

Publication number: CN210183496U
Application number: CN201921119582.XU
Authority: CN
Inventors: Jinren Mao; 毛金仁; Yongjin Zhang; 张永金
Original assignee: Shenzhen Runtong Electroacoustic Technology Co Ltd
Current assignee: Shenzhen Runtong Electroacoustic Technology Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-03-24
Anticipated expiration: 2029-07-16

Abstract

The utility model relates to the technical field of earphone, the utility model provides an air conduit earphone, including the earphone body, air conduit and loudspeaker, wherein, loudspeaker and air conduit deviate from the other end of earphone body and are connected, loudspeaker includes audio playback subassembly, the tuning screen cloth and be used for supporting and fix the structure support of audio playback subassembly, the audio frequency resettlement groove that is used for settling audio playback subassembly is offered to the structure support, the audio frequency bleeder vent that link up the setting is still offered to the structure support on the cell wall in audio frequency resettlement groove, the subsides of tuning screen cloth are located on the surface of the structure support relative with the audio frequency bleeder vent. This air conduit earphone opens the audio frequency bleeder vent on the cell wall of audio frequency arrangement groove and in order to adjust the air compression of audio frequency arrangement inslot to reduce the distortion phenomenon of audio frequency, still ensured the smoothness when tuning screen cloth is established by the subsides, thereby ensure its dustproof effect with the sharp-pointed noise of filtering, improved the audio playback effect of air conduit earphone.

Description

Air conduit earphone

Technical Field

The utility model relates to an earphone technical field especially relates to an air conduit earphone.

Background

The traditional earphone is directly connected with the mobile device and the earphone body through a wire, and transmits electromagnetic waves of the mobile device to the brain of a person while transmitting sound, so that interference and radiation are caused to the brain electric waves of the person. In order to solve the problem, an air duct earphone is provided in related industries, wherein a loudspeaker is arranged far away from an earphone body, and sound is transmitted into the earphone body from the loudspeaker through an air duct, so that the propagation path of electromagnetic waves is cut off, and negative effects such as interference and radiation to large brain waves of a human body are reduced.

However, in the process of transmitting sound through the air duct, the sound audio frequency is inevitably weakened, and the distortion is serious, so that the traditional air duct earphone has the problem of poor audio playback effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air conduit earphone aims at solving the not good technical problem of current air conduit earphone audio playback effect.

In order to achieve the above object, the utility model adopts the following technical scheme: an air duct earphone comprising:

the earphone body is used for being worn in an ear canal;

the air conduit is arranged in a tubular shape and is connected with the earphone body, and the air conduit is used for transmitting audio to the earphone body;

the loudspeaker device, with the air conduit deviates from the other end of earphone body is connected, the loudspeaker device is including the audio playback subassembly that is used for playback audio frequency, the tuning screen cloth that is used for preventing dust and sharp-pointed noise of filtering to and be used for supporting and fixing the structure support of audio playback subassembly, the structure support is seted up and is used for settling the audio frequency resettlement groove of audio playback subassembly, the structure support still in set up the audio frequency bleeder vent that link up the setting on the cell wall of audio frequency resettlement groove, the tuning screen cloth subsides locate with the audio frequency bleeder vent is relative on the surface of structure support.

Further, the loudspeaker device is still located including the lid structure support holder upside is used for right the structure protection support that audio playback subassembly protected, structure protection support in its downside offer be used for with the protection spread groove of structure support leg joint, structure protection support still in the tank bottom of protection spread groove is offered and is used for holding the audio frequency holding tank of audio playback subassembly, structure protection support still in the high frequency of link up the setting is seted up at the tank bottom of audio frequency holding tank leads the sound hole and link up the setting and with the low frequency of high frequency lead the sound hole dislocation set leads the sound hole.

Further, the structural protective bracket is a structural protective bracket made of steel.

Furthermore, the high-frequency sound guide holes are formed in the center of the bottom of the audio accommodating groove, the low-frequency sound guide holes are arranged around the high-frequency sound guide holes, and at least two low-frequency sound guide holes are arranged in a circumferential array.

Further, the loudspeaker device is still including being used for supporting and fixing structure support holder and structure protective cradle's casing subassembly, casing subassembly includes interconnect's preceding shell and backshell, the backshell is offered and is used for holding structure support holder and structure protective cradle's the chamber that holds, preceding shell is offered and is used for spacing fixed structure protective cradle's protection spacing groove, preceding shell still in the tank bottom of protection spacing groove is offered and is used for spacing fixed air conduit's pipe spacing groove, preceding shell still in the tank bottom of pipe spacing groove is offered and is link up the setting and is used for supplying the pipe that air conduit passed draws and connects the groove, air conduit passes pipe draw and connect the groove and spacing overlap joint in the tank bottom of pipe spacing groove.

Furthermore, the loudspeaker device further comprises a conduit limiting structure sleeved in the conduit limiting groove and the conduit leading groove, and the outer peripheral surface of the conduit limiting structure is abutted against the inner side surface of the air conduit so as to prevent the air conduit from being separated from the conduit limiting groove and the conduit leading groove.

Further, pipe limit structure including be the draw that straight ring form set up connect spacing section and connect in draw and connect spacing section downside and lean out to extend to support that sets up and hold spacing section, draw the external diameter size who connects spacing section with air conduit's internal diameter size looks adaptation, support the outer peripheral face that holds spacing section and contradict the air conduit medial surface, support the bottom that holds spacing section and contradict the cell wall of pipe spacing groove.

Further, the audio playback subassembly include with magnet, the cover that the tank bottom of audio frequency storage tank is connected are located the voice coil loudspeaker voice coil of magnet periphery, locate the copper ring of voice coil loudspeaker voice coil upside, and locate the sound membrane of copper ring upside, magnet is located the tank bottom center department of audio frequency storage tank, and with structure support bracket integrated into one piece.

Further, the air conduit earphone further comprises an ear-hanging structure used for being hung on the auricle, and the ear-hanging structure is connected with the earphone body.

Further, the wall thickness of the air conduit is 0.5 +/-0.05 mm.

The utility model has the advantages that:

the utility model provides an air conduit earphone connects the loudspeaker to the other end that air conduit deviates from the earphone body, and supports and fixes the audio playback subassembly through a structure support bracket, specifically settles the audio playback subassembly through the audio settling groove, later through opening the audio bleeder vent on the cell wall of audio settling groove in order to adjust the air compression in the audio settling groove, thereby reduced the distortion phenomenon of audio frequency, and improved the moist degree of audio frequency, thereby improved the audio playback effect of air conduit earphone; based on the setting of opening the audio frequency bleeder vent on the cell wall in audio frequency arrangement groove, still do benefit to the planarization of guarantee tuning screen cloth when being pasted and locate on the surface of the structure support relative with the audio frequency bleeder vent to ensured its effect dustproof and the sharp-pointed noise of filtering, thereby further improved the audio playback effect of air conduit earphone.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a front view of an air duct earphone according to an embodiment of the present invention;

figure 2 is a cross-sectional view of the speaker device provided in figure 1;

fig. 3 is an enlarged view of a portion of the speaker device provided in fig. 2;

fig. 4 is an enlarged view of the region a of the speaker device provided in fig. 2.

Wherein, in the figures, the respective reference numerals:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Earphone body	200	Air conduit
300	Loudspeaker device	310	Audio playback assembly
				311	Magnet	312	Voice coil
313	Copper ring	314	Sound film
				320	Tuning net cloth	330	Structural support bracket
331	Audio frequency placing groove	332	Audio vent hole
				340	Structure protective bracket	341	Protective connecting groove
342	Audio holding tank	343	High-frequency sound guide hole
				344	Low-frequency sound guide hole	350	Front shell
351	Protection limiting groove	352	Catheter limiting groove
				353	Guide pipe leading groove	360	Rear shell
361	Containing cavity	362	Rear shell lead hole
				363	Rear shell air vent	370	Catheter limiting structure
371	Leading connection limiting section	372	Support and hold spacing section
				380	Printed wiring board	400	Ear-hang structure
500	Control structure	600	Conductive cable
				700	Connector with a locking member

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, 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 indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

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 invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following describes the specific implementation of the present invention in more detail with reference to specific embodiments:

referring to fig. 1 to 4, an embodiment of the present invention provides an air duct earphone, which at least includes an earphone body 100, an air duct 200 and a speaker 300.

Wherein, the earphone body 100 is used for wearing in the ear canal; the air conduit 200 is arranged in a tubular shape and connected with the earphone body 100, and the air conduit 200 is used for transmitting audio to the earphone body 100; the speaker 300 is connected with the other end of the air duct 200 departing from the earphone body 100, the speaker 300 includes an audio playback component 310 for playing back audio, a tuning mesh 320 for preventing dust and filtering sharp noise, and a structural support 330 for supporting and fixing the audio playback component 310, the structural support 330 is provided with an audio placement groove 331 for placing the audio playback component 310, the structural support 330 is further provided with an audio vent 332 penetrating through the audio placement groove 331 on the groove wall, and the tuning mesh 320 is attached to the outer surface of the structural support 330 opposite to the audio vent 332.

It should be noted that the air duct earphone plays back audio through the audio playback member 310 in the speaker device 300 and transmits the audio to the earphone body 100 through the hollow air duct 200, so that the audio can be received by the ear canal. The speaker 300 is connected to the earphone body 100 through the air tube 200 to cut off a propagation path of electromagnetic waves propagating through the conductive cable 600, thereby reducing negative effects of the air tube earphone on interference, radiation and the like of electroencephalogram waves of a human body.

It should be noted that the speaker device 300 supports and fixes the audio playback member 310 by the structural support bracket 330, and particularly, the audio playback member 310 is limited and positioned by the audio seating groove 331. The speaker 300 further has a through audio vent 332 formed on a wall of the audio installation groove 331, so that on one hand, the air compression ratio between the audio installation groove 331 and the outside can be relatively adjusted, thereby preventing the audio playback component 310 disposed in the audio installation groove 331 from being subjected to a large air pressure, reducing distortion of the audio played back by the audio playback component 310, and being capable of adjusting a damping coefficient to a certain extent, which is helpful for improving the dryness of the audio; on the other hand, still help easily realize pasting the operation of establishing tuning screen cloth 320 on the outer wall of the structure support 330 who offers audio frequency bleeder vent 332, and can ensure the planarization of this tuning screen cloth 320, thereby protected this tuning screen cloth 320 the dustproof effect of bleeder vent, still ensured this tuning screen cloth 320 the filtering effect of the sharp-pointed noise of audio frequency, thereby improved the audio playback effect of this loudspeaker device 300 from two aspects, promptly, the audio playback effect of this air conduit earphone has been improved to a certain extent.

It should be noted that the earphone body 100, the air tube 200 and the speaker 300 are provided with two sets for transmitting audio to the left ear canal and the right ear canal, respectively.

The embodiment of the utility model provides an air conduit earphone connects loudspeaker 300 in the other end that air conduit 200 deviates from earphone body 100, and support and fix audio playback subassembly 310 through a structure support 330, specifically settle audio playback subassembly 310 through audio settling tank 331, later through opening audio bleeder vent 332 on the cell wall of audio settling tank 331 with the air compression in adjusting audio settling tank 331, thereby the distortion phenomenon of audio frequency has been reduced, and the dry and moist degree of audio frequency has been improved, thereby the audio playback effect of air conduit earphone has been improved; based on the setting of opening audio frequency bleeder vent 332 on the cell wall of audio frequency arrangement groove 331, still do benefit to the planarization of guarantee tuning screen cloth 320 when being pasted and locate on the surface of structure support 330 relative with audio frequency bleeder vent 332 to ensure its effect dustproof and sharp-pointed noise of filtering, thereby further improved the audio playback effect of air conduit earphone.

It should be added that the air duct earphone further comprises a control structure 500 connected to a side of the speaker device 300 facing away from the air duct 200, a connector 700 for plug-in connection with a mobile device, and a conductive cable 600 for connecting the control structure 500 and the connector 700 and also for connecting the control structure 500 and the speaker device 300, wherein the control structure 500 can be used to adjust the volume of audio and can also be used to turn on or off audio playback. Preferably, the conductive cable 600 is a conductive cable 600 made of braided wires, so as to reduce auscultation effect during use and improve comfort thereof.

Referring to fig. 1 to 3, in the present embodiment, the speaker device 300 further includes a structural protection bracket 340 covering the upper side of the structural support bracket 330 and used for protecting the audio playback device 310, the structural protection bracket 340 is provided with a protection connection groove 341 on the lower side surface thereof and used for being connected with the structural support bracket 330, the structural protection bracket 340 is further provided with an audio receiving groove 342 at the bottom of the protection connection groove 341 and used for receiving the audio playback device 310, and the structural protection bracket 340 is further provided with a high frequency sound guiding hole 343 penetrating through the audio receiving groove 342 and a low frequency sound guiding hole 344 penetrating through the audio receiving groove and dislocated from the high frequency sound guiding hole 343.

It should be noted that the structural protection bracket 340 may be used to protect the audio playback assembly 310, so as to reduce the impact force applied to the speaker 300 when the speaker is collided, and prevent the audio playback assembly 310 from separating from the space region enclosed by the structural protection bracket 340 and the structural support bracket 330, thereby improving the service life of the air duct earphone to a certain extent. The structure protection bracket 340 is covered on the periphery of the structure support bracket 330 by the arrangement of the protection connecting groove 341, and is fixedly connected with the outer peripheral surface of a part of the structure support bracket 330 by the groove wall of the protection connecting groove 341. Preferably, the groove wall of the protective connecting groove 341 and the outer circumferential surface of the structural support bracket 330 are connected by adhesion. Based on this setting, recombine and set up the structure setting of audio frequency bleeder vent 332 that link up on the cell wall of audio frequency arrangement groove 331, can make tuning net cloth 320 keep away from the junction setting of the cell wall of structure support holder 330 and protection spread groove 341, thereby can avoid tuning net cloth 320 to be connected at structure support holder 330 and protection spread groove 341 like infecting of adhesion agents such as glue, avoid causing great negative effects to the effect of tuning net cloth 320, thereby further ensured the dustproof of tuning net cloth 320 and the effect of the sharp-pointed noise of filtering, further improved the audio playback effect of air duct earphone.

It should be noted that the high frequency sound guiding hole 343 and the low frequency sound guiding hole 344, which are disposed in a penetrating manner and are staggered with each other, are disposed at the bottom of the audio accommodating groove 342 to enable the audio accommodating groove to approach the air duct 200, so as to shorten the propagation distance between the audio accommodating groove and the earphone body 100, reduce the attenuation effect of the air duct 200 on the audio, reduce the distortion of the audio, and further improve the audio playback effect of the air duct earphone.

Referring to fig. 1-3, in the present embodiment, the structural shield support 340 is a structural shield support 340 made of steel. It should be noted that the structural protection bracket 340 made of steel can still maintain certain strength and rigidity at a thinner thickness, that is, the structural protection bracket 340 made of steel is beneficial to the miniaturization development without affecting the protection effect of the structural protection bracket on the audio playback assembly 310, thereby being beneficial to the miniaturization development of the loudspeaker 300, and in addition, the thinned structural protection bracket 340 not only can reduce the outer diameter size thereof, but also can correspondingly enlarge the inner diameter size thereof, namely, enough space can be reserved for the audio playback assembly 310.

Referring to fig. 1-3, in the present embodiment, the high frequency sound guiding hole 343 is disposed at the center of the bottom of the audio accommodating groove 342, the low frequency sound guiding hole 344 is disposed around the high frequency sound guiding hole 343, and at least two low frequency sound guiding holes 344 are disposed and arranged in a circumferential array. It should be noted that the low frequency sound guiding hole 344 is disposed around the high frequency sound guiding hole 343, so that the speaker 300 can exhibit the sound effect of the low frequency sound playing around the high frequency sound periphery, thereby improving the sound playing effect of the air duct earphone.

Referring to fig. 2 to 4, in the present embodiment, the speaker device 300 further includes a housing assembly for supporting and fixing the structural support bracket 330 and the structural protection bracket 340, the housing assembly includes a front housing 350 and a rear housing 360 connected to each other, the rear housing 360 is provided with an accommodating cavity 361 for accommodating the structural support bracket 330 and the structural protection bracket 340, the front housing 350 is provided with a protection limiting groove 351 for limiting and fixing the structural protection bracket 340, the front housing 350 is further provided with a conduit limiting groove 352 for limiting and fixing the air conduit 200 at a bottom of the protection limiting groove 351, the front housing 350 is further provided with a conduit guiding groove 353 penetrating through the conduit limiting groove 352 and for passing the air conduit 200, and the air conduit 200 passes through the conduit guiding groove 353 and is in limited lap joint with the bottom of the conduit limiting groove 352.

It should be noted that the front and

rear shells

350, 360 together serve to further protect the structural support bracket 330 and the structural containment bracket 340 from impact forces to which the audio playback assembly 310 is subjected when the speaker device 300 is impacted. Specifically, the structure supporting bracket 330 and the structure protecting bracket 340 are accommodated in the accommodating cavity 361 of the rear shell 360 and are fixedly connected with the protecting and limiting groove 351 of the front shell 350, and the shape and the size of the protecting and limiting groove 351 are matched with those of the structure protecting bracket 340, and preferably, the connection can be realized in an adhesion manner.

It should be further noted that, after the end of the air duct 200 departing from the earphone body 100 passes through the duct guiding groove 353, the end of the air duct 200 is mounted at the groove bottom of the duct limiting groove 352, and correspondingly, a duct connecting section which is vertically extended and mounted at the groove bottom of the duct limiting groove 352 is arranged at the port of the air duct 200, so that the connection relationship between the air duct 200 and the speaker 300 can be ensured, the air duct 200 is prevented from being disconnected from the speaker 300, and the stability and the service life of the earphone of the air duct are further ensured. Preferably, the inner diameter of the conduit lead groove 353 is sized to fit the outer diameter of the air conduit 200.

It should be noted that the rear casing 360 further has a rear casing air hole 363 at the bottom of the accommodating cavity 361 for ventilation, and a rear casing lead hole 362 for the conductive cable 600 to pass through for connecting with the audio playback assembly 310. The speaker device 300 further includes a printed circuit board 380 attached to the bottom of the structural support bracket 330 and the conductive cable 600 is connected to the printed circuit board 380 after passing through the rear housing lead hole 362, thereby establishing an electrical connection between the mobile device and the audio playback assembly 310.

Referring to fig. 2 to 4, in the present embodiment, the speaker 300 further includes a duct limiting structure 370 sleeved in the duct limiting groove 352 and the duct guiding groove 353, and an outer circumferential surface of the duct limiting structure 370 abuts against an inner side surface of the air duct 200 to prevent the air duct 200 from being separated from the duct limiting groove 352 and the duct guiding groove 353. It should be noted that, by the arrangement of the conduit limiting structure 370, the outer peripheral surface of the conduit limiting structure 370 may be utilized to abut against the inner side surface of the air conduit 200, so as to tightly limit the air conduit 200 between the outer peripheral surface of the conduit limiting structure 370 and the groove wall of the conduit limiting groove 352, and between the outer peripheral surface of the conduit limiting structure 370 and the groove wall of the conduit guiding groove 353, thereby further ensuring the connection relationship between the air conduit 200 and the speaker 300, further avoiding the disconnection between the air conduit 200 and the speaker 300, and further ensuring the stability and the service life of the earphone of the air conduit.

Referring to fig. 2-4, in the present embodiment, the conduit limiting structure 370 includes a guiding connection limiting section 371 and a support limiting section 372, wherein the guiding connection limiting section 371 is disposed in a straight ring shape, and the support limiting section 372 is connected to a lower side of the guiding connection limiting section 371 and extends outward and obliquely, an outer diameter of the guiding connection limiting section 371 is matched with an inner diameter of the air conduit 200, an outer circumferential surface of the support limiting section 372 supports against an inner side surface of the air conduit 200, and a bottom end of the support limiting section 372 supports against a groove wall of the conduit limiting groove 352. It should be noted that the air guide tube 200 in the guide tube guiding groove 353 can be limited and abutted by the guiding and connecting limiting section 371, so that the air guide tube 200 of the section is limited between the outer circumferential surface of the guide tube limiting structure 370 and the groove wall of the guide tube guiding groove 353; the air conduit 200 of the conduit limiting groove 352 can be gradually limited and abutted by the abutting limiting section 372 which is obliquely and extendedly arranged outwards, so that the air conduit 200 of the section is limited between the outer peripheral surface of the conduit limiting structure 370 and the groove wall of the conduit limiting groove 352, and the air conduit 200 is prevented from being separated from the connection relation with the conduit limiting groove 352; the bottom end of the abutting limiting section 372 abuts against the groove wall of the guide pipe limiting groove 352, the limiting effect of the guide pipe limiting structure 370 on the air guide pipe 200 can be further stabilized, the connection relation between the air guide pipe 200 and the loudspeaker 300 can be further guaranteed, the air guide pipe 200 is further prevented from being disconnected with the loudspeaker 300, and the stability and the service life of the air guide pipe earphone are further guaranteed.

Referring to fig. 1-3, in the present embodiment, the audio playback assembly 310 includes a magnet 311 connected to the bottom of the audio accommodating groove, a voice coil 312 sleeved on the periphery of the magnet 311, a copper ring 313 disposed on the upper side of the voice coil 312, and a sound film 314 disposed on the upper side of the copper ring 313, wherein the magnet 311 is disposed at the center of the bottom of the audio accommodating groove 342 and is integrally formed with the structural support 330. It should be noted that, the diaphragm 314 and the voice coil 312 form a vibration system, the magnet 311 and the structural support 330 form a magnetic circuit, and after the voice coil 312 is electrically conducted, the voice coil moves in a magnetic field formed by the magnetic circuit formed by the magnet 311 and the structural support 330, so as to drive the diaphragm 314 to vibrate, thereby converting electric energy into magnetic energy and then into mechanical energy, and then making a sound. It should be further noted that, based on the integrated configuration of the magnet 311 and the structural support bracket 330, and based on the configuration of the voice coil 312 sleeved on the periphery of the magnet 311, the audio vent 332 is disposed adjacent to the voice coil 312, so as to vent the voice coil 312, thereby further reducing distortion of the audio played back by the audio playback assembly 310, and adjusting the damping coefficient to a certain extent, which is helpful to improve the dryness of the audio. Preferably, the magnet 311 may be an ultra-high performance magnet 311, and the voice coil 312 may be a copper-clad aluminum wire as a wire of the voice coil 312, so as to ensure the audio playback performance of the audio playback assembly 310.

Referring to fig. 1, in the present embodiment, the air duct earphone further includes an ear hook structure 400 for being hung on an auricle, and the ear hook structure 400 is connected to the earphone body 100. What needs to be said here is that, based on the setting of ear-hang structure 400, can realize its relation of being affiliated to with the auricle to having stabilized the relation of wearing between earphone body 100 and the ear canal to a certain extent, having avoided earphone body 100 to break away from the ear canal easily, thereby improved the performance of this air conduit earphone.

Referring to fig. 1-2, in the present embodiment, the wall thickness of the air duct 200 is 0.5 ± 0.05 mm. It should be noted here that, setting the wall thickness of the air duct 200 to be 0.5 ± 0.05mm is beneficial to reduce the audio attenuation effect of the air duct 200 in the process of transmitting audio, so that the audio distortion can be improved to a certain extent, and the audio playback effect of the air duct earphone can be correspondingly improved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An air duct earphone, comprising:

the earphone body is used for being worn in an ear canal;

2. The air guide tube earphone according to claim 1, wherein the speaker further comprises a structural protection bracket covering the upper side of the structural support bracket for protecting the audio playback device, the structural protection bracket has a protection connection groove formed on a lower side thereof for connecting with the structural support bracket, the structural protection bracket further has an audio receiving groove formed at a bottom of the protection connection groove for receiving the audio playback device, and the structural protection bracket further has a high frequency sound guide hole formed therethrough and a low frequency sound guide hole formed therethrough and offset from the high frequency sound guide hole.

3. The air duct earphone according to claim 2 wherein the structural shield support is a structural shield support made of steel.

4. The air duct earphone according to claim 2, wherein the high frequency sound guide hole is formed at a center of a bottom of the audio housing groove, the low frequency sound guide hole is formed around the high frequency sound guide hole, and at least two of the low frequency sound guide holes are formed in a circumferential array.

5. The air duct earphone of claim 2 wherein said speaker means further comprises a housing assembly for supporting and securing said structural support brace and said structural shield brace, the shell assembly comprises a front shell and a rear shell which are connected with each other, the rear shell is provided with an accommodating cavity for accommodating the structure supporting bracket and the structure protecting bracket, the front shell is provided with a protective limiting groove for limiting and fixing the structural protective bracket, the bottom of the protective limiting groove of the front shell is provided with a conduit limiting groove for limiting and fixing the air conduit, the front shell is also provided with a guide pipe leading groove which is arranged in a run-through way and is used for the air guide pipe to pass through at the bottom of the guide pipe limiting groove, the air guide pipe penetrates through the guide pipe leading groove and is in limiting lap joint with the bottom of the guide pipe limiting groove.

6. The air duct earphone according to claim 5, wherein the speaker further comprises a duct limiting structure fitted in the duct limiting groove and the duct leading groove, and an outer circumferential surface of the duct limiting structure abuts against an inner side surface of the air duct to prevent the air duct from being separated from the duct limiting groove and the duct leading groove.

7. The air duct earphone according to claim 6, wherein the duct limiting structure comprises a leading-in limiting section and a supporting limiting section, the leading-in limiting section is arranged in a straight ring shape, the supporting limiting section is connected to the lower side of the leading-in limiting section and extends outwards in an inclined manner, the outer diameter of the leading-in limiting section is matched with the inner diameter of the air duct, the outer peripheral surface of the supporting limiting section abuts against the inner side surface of the air duct, and the bottom end of the supporting limiting section abuts against the groove wall of the duct limiting groove.

8. The air duct earphone according to claim 1, wherein the audio playback assembly comprises a magnet connected to the bottom of the audio receiving groove, a voice coil fitted around the outer circumference of the magnet, a copper ring provided on the upper side of the voice coil, and a voice diaphragm provided on the upper side of the copper ring, and the magnet is provided at the center of the bottom of the audio receiving groove and is integrally formed with the structural support bracket.

9. The air duct earphone according to claim 1 further comprising an earhook structure for hooking against the pinna, the earhook structure being connected to the earphone body.

10. The air duct earphone according to any one of claims 1-9, wherein the wall thickness of the air duct is 0.5 ± 0.05 mm.