CN217283320U - High-fidelity stereo moving coil earphone - Google Patents

Abstract

The utility model belongs to the technical field of moving coil earphones, in particular to a high-fidelity stereo moving coil earphone, which comprises an earphone shell, a moving coil and a battery; the earphone shell is internally provided with a containing cavity, the front end and the rear end of the earphone shell are respectively provided with a sound outlet pipe and an air inlet hole which are communicated with the containing cavity, the moving coil and the battery are both arranged in the containing cavity, and the moving coil is close to the sound outlet pipe; the moving coil comprises a shell, a sound guide pipe and a moving coil unit; the movable coil unit is arranged in the mounting cavity and close to the sound outlet; the first end of the sound guide tube is connected with the sound outlet, and the second end of the sound guide tube is inserted into the sound outlet in a matching manner; the sound generated by the moving coil unit is directly transmitted to the ears of a user from the sound outlet along the sound guide tube, the sound cannot be diffused into the accommodating cavity of the earphone shell, so that the sound generated by the moving coil is transmitted along the sound guide tube, the sound loss and the loss are small, the sound fidelity performance is high, and the sound quality of the moving coil earphone is improved.

Description

High-fidelity stereo moving coil earphone

Technical Field

The utility model belongs to the technical field of the moving coil earphone, especially, relate to a stereo moving coil earphone of high-fidelity.

Background

The earphone is a pair of conversion units, it accepts the electric signal that the media player or receiver send out, utilize the loudspeaker close to the ear to change it into the sound wave that can be heard, the earphone is usually separable with the media player, utilize a plug to connect, the benefit is under the situation that does not influence the other people, can listen to the stereo set alone; can also isolate the sound of the surrounding environment, and is very helpful for people who use in a noisy environment such as a recording studio, a bar, a trip, sports, and the like.

The moving coil earphone comprises a shell and a moving coil; be equipped with the installation cavity in the shell, set up the play sound pipe of intercommunication installation cavity on the shell, the movable coil is installed in the installation cavity, through the movable coil vibration production sound and pass through in the play sound pipe passes sound to user's ear. However, in the process of generating sound by the moving coil and transmitting the sound to the sound outlet pipe, the sound loss is large or the sound loss is large, and the sound quality of the moving coil is reduced to a certain extent.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stereo moving coil earphone of high-fidelity aims at solving among the prior art moving coil earphone and produces sound and pass to the in-process that goes out the sound pipe at the moving coil, can appear the great or the great condition of sound loss, has reduced the technical problem of the tone quality of moving coil to a certain extent.

In order to achieve the above object, an embodiment of the present invention provides a high fidelity stereo moving coil earphone, which includes an earphone housing, a moving coil and a battery; the earphone shell is internally provided with a containing cavity, the front end and the rear end of the earphone shell are respectively provided with a sound outlet pipe and an air inlet hole which are communicated with the containing cavity, the moving coil and the battery are both arranged in the containing cavity, and the moving coil is close to the sound outlet pipe; the moving coil comprises a shell, a sound guide pipe and a moving coil unit; the movable coil unit is arranged in the mounting cavity and close to the sound outlet; the first end of the sound guide pipe is connected with the sound outlet, and the second end of the sound guide pipe is inserted into the sound outlet in a matching mode.

Optionally, the edge of the sound outlet extends outward to form a connection pipe, the diameter of the first end of the sound guide pipe is increased to form a connection ring, and the connection ring is fixedly sleeved on the connection pipe.

Optionally, the second end of the sound guiding tube extends to the open end of the sound outlet tube.

Optionally, the sound outlet pipe comprises a sound outlet pipe main body, a mounting ring and a filter screen; the outer wall of one end, far away from the moving coil, of the sound outlet pipe main body is provided with an external thread, the diameter of an annular hole at one end of the mounting ring is increased to form an annular mounting groove, the inner wall of the annular mounting groove is provided with an internal thread, the filter screen is accommodated at the bottom of the annular mounting groove in a matched mode, and the annular mounting groove is fixedly connected to the sound outlet pipe main body through the internal thread and the external thread in a matched mode.

Optionally, the diameter of one end of the sound outlet pipe main body, which is close to the earphone housing, is increased to form a limiting portion, and a limiting groove is formed between the limiting portion and the mounting ring.

Optionally, both end edges of the mounting ring are transited by a fillet.

Optionally, the moving coil further comprises a first shielding plate, a second shielding plate and a circuit board; the first shielding plate, the circuit board and the second shielding plate are sequentially arranged in the installation cavity, the first shielding plate is close to the moving coil unit, through holes are formed in the middle parts of the first shielding plate, the circuit board and the second shielding plate in a penetrating mode, and filter cotton covers the through holes; the moving coil unit and the battery are electrically connected with the circuit board.

Optionally, the moving coil unit comprises a T-iron, a voice diaphragm, a voice coil and an external magnet; the sound film, the external magnet and the T iron are sequentially arranged in the mounting cavity, and the sound film is close to the sound outlet; the T iron comprises a bottom plate and a bulge arranged in the middle of the bottom plate; the bulge is close to the sound film, the outer magnet is sleeved outside the bulge, and an accommodating groove is formed between the outer magnet and the bulge; one end of the voice coil is connected with the voice film, and the other end of the voice coil is movably accommodated in the accommodating groove; the circuit board is electrically connected with the voice coil; the middle of the bulge is provided with a first through hole in a penetrating mode, the bottom plate is provided with at least one second through hole in a penetrating mode, and the second through hole is communicated with the accommodating groove.

Optionally, a mounting groove is dug at the bottom of the protrusion, and the first through hole is communicated with the mounting groove; an inner magnet is arranged in the mounting groove, the inner magnet and the outer magnet are arranged in an inner-outer corresponding mode, and a first clearance hole for avoiding the first through hole penetrates through the middle of the inner magnet.

Optionally, a washer is arranged between the outer magnet and the sound film, and a second clearance hole for clearance of the voice coil penetrates through the middle of the washer.

Compared with the prior art, the embodiment of the utility model provides an above-mentioned one or more technical scheme in the stereo moving coil earphone of hi-fi has one of following technological effect at least:

the sound that the vibration of moving coil unit produced is directly transmitted to user's ear along the leading note pipe from the sound outlet, and sound can not spread the intracavity that holds of earphone shell for the moving coil produces sound and is along the in-process of leading note pipe transmission, and sound loss and loss are less, and sound fidelity can be high, and then has improved the tone quality of moving coil 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 the structure diagram of the high-fidelity stereo moving coil earphone of the utility model.

Fig. 2 is the sectional view of the hi-fi stereo moving coil earphone of the present invention.

Fig. 3 is the decomposition schematic diagram of the high-fidelity stereo moving coil earphone of the utility model.

Fig. 4 is a sectional view of the moving coil of the present invention.

Fig. 5 is an exploded view of the moving coil of the present invention.

Wherein, in the figures, the respective reference numerals:

100. an earphone housing; 101. an accommodating chamber; 102. an installation table; 103. a threaded hole; 110. a sound outlet pipe; 111. A sound outlet pipe main body; 111a, a stopper; 111b, a limiting groove; 112. a mounting ring; 112a, an annular mounting groove; 113. a second filter screen; 120. an air inlet; 130. a first filter screen;

200. moving coils; 210. a housing; 211. a mounting cavity; 212. a sound outlet; 212a, a connecting pipe; 213. an installation port; 214. a cylindrical enclosure wall; 215. an end wall; 216. a fixed table; 217. a first connection hole; 218. a jack; 220. a moving coil unit; 221. t iron; 221a, a bottom plate; 221b, a projection; 221c, a first through hole; 221d, a second through hole; 221e, mounting grooves; 222. a voice coil; 223. an external magnet; 224. a containing groove; 225. a sound membrane; 226. an inner magnet; 227. washer; 230. a first shield plate; 231. a cavity; 240. a second shielding plate; 241. a second connection hole; 242. a screw; 243. inserting a column; 244. a threading hole; 245. an anti-interference magnetic ring; 246. a cable; 250. a circuit board; 260. perforating; 261. filtering cotton; 270. a sound guide tube; 271. a connecting ring;

300. a battery.

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 by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the 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 embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; 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 embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In one embodiment of the present invention, referring to fig. 1-5, a high fidelity stereo moving coil earphone is provided, comprising an earphone housing 100, a moving coil 200 and a battery 300.

Referring to fig. 1 to 5, an accommodating cavity 101 is provided in the earphone housing 100, a sound outlet tube 110 and an air inlet hole 120 which are communicated with the accommodating cavity 101 are respectively provided at the front end and the rear end of the earphone housing 100, the moving coil 200 and the battery 300 are both installed in the accommodating cavity 101, and the moving coil 200 is close to the sound outlet tube 110.

Referring to fig. 1 to 5, the moving coil 200 includes a housing 210, a sound guide tube 270, and a moving coil unit 220. The casing 210 is provided with a mounting cavity 211 therein, the opposite ends of the casing 210 are respectively provided with a sound outlet 212 and a mounting port 213 which are communicated with the mounting cavity 211, and the moving coil unit 220 is mounted in the mounting cavity 211 and close to the sound outlet 212. A first end of the sound guiding tube 270 is connected to the sound outlet 212, and a second end of the sound guiding tube 270 is adapted to be inserted into the sound outlet tube 110.

Referring to fig. 1 to 5, the housing 210 includes a cylindrical surrounding wall 214 and an end wall 215 covering one end of the cylindrical surrounding wall 214. A mounting cavity 211 is formed between the cylindrical surrounding wall 214 and the end wall 215, the sound outlet 212 is provided in the end wall 215, and the other end of the cylindrical surrounding wall 214 is a mounting opening 213.

Specifically, referring to fig. 1-5, the sound generated by the vibration of the moving coil unit 220 is directly transmitted from the sound outlet 212 to the ear of the user along the sound guide tube 270, and the sound is not diffused into the accommodating cavity 101 of the earphone housing 100, so that the sound generated by the moving coil 200 is transmitted along the sound guide tube 270 with less sound loss and high sound fidelity, and the sound quality of the earphone of the moving coil 200 is improved.

Preferably, referring to fig. 1 to 5, the sound guide pipe 270 is formed in a straight type to better transmit sound. Of course, the sound guide tube 270 is also provided with an arc shape or other shapes, which may be determined according to the shape of the earphone housing 100, and the embodiment is not limited herein.

Further, referring to fig. 1 to 5, the edge of the sound outlet 212 extends outward to form a connection pipe 212a, the diameter of the first end of the sound guide pipe 270 is increased to form a connection ring 271, and the connection ring 271 is fixedly sleeved on the connection pipe 212a through tight fit, so that the sound guide pipe 270 and the connection pipe 212a are fixedly connected, and the installation is convenient.

Further, referring to fig. 1 to 5, the second end of the sound guide tube 270 extends to the open end of the sound outlet tube 110, so that the sound generated by the vibration of the coil unit 220 is directly transmitted to the ear of the user along the sound guide tube 270, and the loss and loss of the sound are reduced.

In another embodiment of the present invention, referring to fig. 1 to 5, the sound outlet pipe 110 includes a sound outlet pipe main body 111, a mounting ring 112, and a second filter 113. The outer wall of one end of the sound outlet pipe main body 111, which is far away from the moving coil 200, is provided with an external thread, the diameter of the annular hole of one end of the mounting ring 112 is increased to form an annular mounting groove 112a, the inner wall of the annular mounting groove 112a is provided with an internal thread, the second filter screen 113 is accommodated at the bottom of the annular mounting groove 112a in a matching manner, the annular mounting groove 112a is fixedly connected to the sound outlet pipe main body 111 through the internal thread and the external thread in a matching manner, and the second filter screen 113 is fixedly connected between the mounting ring 112 and the sound outlet pipe main body 111.

Referring to fig. 1 to 5, the second filter 113 is used for filtering dust in air and reducing dust entering the moving coil 200. After a long time of use, a large amount of dust adheres to the second filter 113, and the second filter 113 needs to be cleaned periodically. During cleaning, the mounting ring 112 is unscrewed from the sound outlet pipe main body 111, and the second filter screen 113 is taken down, so that the second filter screen 113 can be cleaned or replaced by a new second filter screen 113, and the cleaning is convenient. Meanwhile, water cannot enter the earphone from the sound outlet pipe 110 during cleaning, and damage to the moving coil 200 and the battery 300 inside the earphone is greatly reduced. After the cleaning is completed, the mounting ring 112 and the second filter 113 are mounted on the sound outlet pipe main body 111, so that the operation is convenient.

Further, referring to fig. 1 to 5, the diameter of one end of the sound outlet tube main body 111 close to the earphone housing 100 is increased to form a limiting portion 111a, a limiting groove 111b is formed between the limiting portion 111a and the mounting ring 112, and the limiting portion 111a and the mounting ring 112 play a limiting role, so that an earplug (not shown) can be stably clamped in the limiting groove 111b, and the earplug is not easy to fall off when in use.

Further, referring to fig. 1-5, the edges of the two ends of the mounting ring 112 are respectively transited to form a fillet, and by providing the fillets, a user can conveniently sleeve the earplug on the mounting ring 112 and limit the earplug in the limiting groove 111b, so as to conveniently install the earplug.

In another embodiment of the present invention, referring to fig. 1 to 5, the moving coil 200 further includes a first shielding plate 230, a second shielding plate 240, and a circuit board 250. First shield plate 230, circuit board 250 with second shield plate 240 install in proper order in installation cavity 211, just first shield plate 230 is close to moving coil unit 220, first shield plate 230 circuit board 250 with the middle part of second shield plate 240 all runs through and is equipped with perforation 260, perforation 260 covers there is filter pulp 261.

Wherein, the filter pulp 261 can be polyester fiber cotton soundproof cotton, centrifugal glass cotton, rock wool, mineral wool, plant fiber spraying etc. soundproof cotton is ripe prior art, and noise sound wave energy converts into heat energy through the reflection of innumerable fibre in soundproof cotton, superpose each other, collision when the noise passes through soundproof cotton, makes noise sound wave intensity weaken to make the noise disappear.

Referring to fig. 1 to 5, the moving coil unit 220 and the battery 300 are electrically connected to the circuit board 250. The battery 300 is a rechargeable battery 300, and the battery 300 provides power for the circuit board 250 and the moving coil 200.

Referring to fig. 1 to 5, the first shielding plate 230 and the second shielding plate 240 are used to shield electronic signals, and function to shield external electromagnetic waves from the internal circuit and to shield electromagnetic waves generated inside from being radiated to the outside. The materials of the first shield plate 230 and the second shield plate 240 are generally stainless steel with a thickness of 0.2mm to 1mm and cupronickel, which is a metal shield material that is easily tinned.

Specifically, referring to fig. 1 to 5, in operation, the moving coil unit 220 generates sound by the vibration of the moving coil 200 and transmits the sound from the sound outlet pipe 110, and the external air and noise pass through the air inlet holes 120 and the through holes 260 into and out of the moving coil unit 220 to balance the air flow generated by the vibration of the moving coil unit 220, so that the sound quality of the moving coil unit 220 is better. Wherein, the electronic signal or the electromagnetic wave in the external noise can effectively be shielded to second shield plate 240, the electronic signal or the electromagnetic wave that produce when first shield plate 230 can effectively shield circuit board 250 function, prevent that the electronic signal or the electromagnetic wave that circuit board 250 produced from causing the interference to moving coil unit 220, the interference killing feature is high, and simultaneously, filter pulp 261 can filter the noise that the external air transmitted into, the tone quality of effectual assurance moving coil unit 220, make the sound quality of moving coil unit 220 good, thereby make the sound quality of moving coil 200 earphone good.

In another embodiment of the present invention, referring to fig. 1 to 5, the moving coil unit 220 includes a T-iron 221, a voice diaphragm 225, a voice coil 222, and an outer magnet 223. The sound diaphragm 225, the external magnet 223 and the T-iron 221 are sequentially mounted in the mounting cavity 211, and the sound diaphragm 225 is close to the sound outlet 212.

Referring to fig. 1 to 5, the T-bar 221 includes a bottom plate 221a and a protrusion 221b disposed in the middle of the bottom plate 221 a; the projection 221b is close to the sound film 225, the external magnet 223 is sleeved outside the projection 221b, and a containing groove 224 is formed between the external magnet 223 and the projection 221 b; one end of the voice coil 222 is connected to the voice diaphragm 225, and the other end of the voice coil 222 is movably accommodated in the accommodating groove 224; the circuit board 250 is electrically connected with the voice coil 222; a first through hole 221c is formed through the middle of the protrusion 221b, at least one second through hole 221d is formed through the bottom plate 221a, and the second through hole 221d is communicated with the accommodating groove 224.

Specifically, referring to fig. 1 to 5, when a varying current is applied to the voice coil 222 through the circuit board 250, the varying magnetic field generated by the voice coil 222 interacts with the magnetic field of the external magnet 223, so that the voice coil 222 reciprocates in the accommodating groove 224, and the voice diaphragm 225 is driven to vibrate to generate sound. When the sound film 225 vibrates, the air vibration of the cavity between the sound film 225 and the T-iron 221 is pushed to generate air flow, the air flow can flow into or out of the cavity through the first through hole 221c and the second through hole 221d (namely, the air flow in the cavity flows into the cavity through the first through hole 221c and the second through hole 221d, the through hole 260 and the air inlet hole 120 flow out of the moving coil 200 earphone, the air outside the moving coil 200 earphone can flow into the cavity through the air inlet hole 120, the through hole 260, the first through hole 221c and the second through hole 221 d), so that the air flow in the cavity is uniform, the air flow generated by the vibration of the sound film 225 in the cavity is balanced, the vibration of the sound film 225 is smoother, the low frequency, the medium frequency and the high frequency performance of the moving coil 200 earphone are improved, the sound quality of the moving coil 200 earphone is further improved, and the sound quality of the moving coil 200 earphone is improved.

Further, referring to fig. 1 to 5, an installation groove 221e is dug at the bottom of the protrusion 221b, and the first through hole 221c is communicated with the installation groove 221 e; an inner magnet 226 is arranged in the mounting groove 221e, the inner magnet 226 and the outer magnet 223 are arranged in an inner-outer corresponding manner, and a first clearance hole for avoiding the first through hole 221c penetrates through the middle of the inner magnet 226. The air flow can flow into or out of the chamber through the air inlet holes 120, the through holes 260, the first through holes 221c and the first clearance holes. The outer magnet 223 and the inner magnet 226 interact with each other to form a stable magnetic field, so that the voice coil 222 does not shift when reciprocating up and down along the accommodating groove 224, the stability of the vibration of the voice coil 222 and the voice diaphragm 225 is improved, and the earphone sound quality of the moving coil 200 is improved.

Further, referring to fig. 1 to 5, a washer 227 is disposed between the outer magnet 223 and the voice diaphragm 225, and a second clearance hole for clearance of the voice coil 222 is disposed through the middle of the washer 227. Specifically, the washer 227 has a magnetic conduction effect, and the magnetic field lines generated by the outer magnet 223 form a stable magnetic field around the washer 227 so as to provide stable motion for the voice coil 222 and ensure the sound quality of sound generated by the vibration of the sound film 225.

Further, referring to fig. 1 to 5, the first shielding plate 230 is disc-shaped, the top end of the surrounding wall of the first shielding plate 230 holds the edge of the bottom plate 221a, the through hole 260 is formed in the bottom wall of the cover plate, and a cavity 231 for flowing air flow is formed between the first shielding plate 230 and the bottom plate 221 a. Specifically, the first shielding plate 230 with a disc-shaped structure enables the first shielding plate 230 to support the T-bar 221 without blocking the second through hole 221d, so that the air flow in the cavity can flow out of the moving coil 200 earphone through the second through hole 221d, the cavity 231, the through hole 260 and the air inlet hole 120 in sequence, and the air outside the moving coil 200 earphone can flow into the cavity through the air inlet hole 120, the through hole 260, the cavity 231 and the second through hole 221d in sequence, thereby ensuring smooth flow of the air flow.

Referring to fig. 1 to 5, the circuit board 250 supports the first shielding plate 230, and the second shielding plate 240 supports the circuit board 250, so that the first shielding plate 230, the second shielding plate 240 and the circuit board 250 are stably mounted at the mounting cavity 211.

In another embodiment of the present invention, referring to fig. 1 to 5, an installation platform 102 is protruded from an inner wall of the accommodating cavity 101, and the installation platform 102 is opened with a plurality of threaded holes 103. The edge of the mounting port 213 extends outward to form a fixed platform 216, the fixed platform 216 is provided with a plurality of first connection holes 217 in a penetrating manner, the second shielding plate 240 is provided with a plurality of second connection holes 241 in a penetrating manner, and the plurality of second connection holes 241 are respectively arranged in a one-to-one correspondence manner with the plurality of first connection holes 217. A screw 242 sequentially penetrates through the second connection hole 241 and the first connection hole 217 to be in threaded connection with the threaded hole 103, so that the housing 210 and the second shielding plate 240 are fixedly installed in the accommodating cavity 101, the assembly is convenient, and the installation is firm.

Further, referring to fig. 1 to 5, a plurality of insertion holes 218 are circumferentially and uniformly distributed on the fixing table 216, a plurality of insertion posts 243 are circumferentially and uniformly distributed on the second shielding plate 240, and the insertion posts 243 are respectively fixedly inserted into the insertion holes 218, so that the second shielding plate 240 is fixed to the housing 210, and then the housing 210 is fixedly installed in the accommodating cavity 101, which is beneficial for assembly by workers.

Further, referring to fig. 1 to 5, a first filter 130 covering the air inlet 120 is disposed in the accommodating chamber 101, and the first filter 130 can filter out dust passing through the air inlet 120, so as to prevent dust in the environment from entering the accommodating chamber 101 and protect the moving coil unit 220.

Referring to fig. 1 to 5, the first filter 130 and the second filter 140 may be nylon meshes, and have a good dust filtering effect.

Further, referring to fig. 1 to 5, a threading hole 244 is further formed through the second shielding plate 240, an anti-interference magnetic ring 245 is sleeved on the threading hole 244, a cable 246 is arranged through the anti-interference magnetic ring 245, and two ends of the cable 246 are electrically connected to the circuit board 250 and the battery 300 respectively. The anti-interference magnetic ring 245 is a mature prior art, and the anti-interference magnetic ring 245 is used for suppressing interference of electronic signals or electromagnetic waves on a power line and a signal line (the cable 246), and has an electrostatic pulse absorbing capability.

The rest of this embodiment is the same as the first embodiment, and the unexplained features in this embodiment are explained by the first embodiment, which is not described herein again.

The foregoing is a more detailed description of the present invention, taken in conjunction with specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, its framework form can be nimble changeable, can derive series of products. But merely as a matter of simple deductions or substitutions, should be considered as belonging to the scope of the present invention, which is defined by the claims as filed.

Claims (10)

1. A high-fidelity stereo moving coil earphone is characterized by comprising an earphone shell, a moving coil and a battery; the earphone shell is internally provided with a containing cavity, the front end and the rear end of the earphone shell are respectively provided with a sound outlet pipe and an air inlet hole which are communicated with the containing cavity, the moving coil and the battery are both arranged in the containing cavity, and the moving coil is close to the sound outlet pipe; the moving coil comprises a shell, a sound guide pipe and a moving coil unit; the movable coil unit is arranged in the mounting cavity and close to the sound outlet; the first end of the sound guide pipe is connected with the sound outlet, and the second end of the sound guide pipe is inserted into the sound outlet in a matching mode.

2. The high fidelity stereo moving coil earpiece of claim 1, wherein: the edge of the sound outlet extends outwards to form a connecting pipe, the diameter of the first end of the sound guide pipe is increased to form a connecting ring, and the connecting ring is fixedly sleeved on the connecting pipe.

3. The high fidelity stereo moving coil earpiece of claim 2, wherein: the second end of the sound guide pipe extends to the open end of the sound outlet pipe.

4. The high fidelity stereo moving coil earpiece of claim 3, wherein: the sound outlet pipe comprises a sound outlet pipe main body, a mounting ring and a second filter screen; the outer wall of one end, far away from the moving coil, of the sound outlet pipe main body is provided with an external thread, the diameter of an annular hole at one end of the mounting ring is increased to form an annular mounting groove, the inner wall of the annular mounting groove is provided with an internal thread, the second filter screen is accommodated at the bottom of the annular mounting groove in a matched mode, and the annular mounting groove is fixedly connected to the sound outlet pipe main body through the internal thread and the external thread in a matched mode.

5. The high fidelity stereo moving coil earpiece of claim 4, wherein: the diameter of one end, close to the earphone shell, of the sound outlet pipe main body is increased to form a limiting portion, and a limiting groove is formed between the limiting portion and the mounting ring.

6. The high fidelity stereo moving coil earpiece of claim 4, wherein: the edges of the two ends of the mounting ring are transited to form fillets.

7. The high fidelity stereo moving coil earpiece of any of claims 1 to 6, wherein: the moving coil also comprises a first shielding plate, a second shielding plate and a circuit board; the first shielding plate, the circuit board and the second shielding plate are sequentially arranged in the installation cavity, the first shielding plate is close to the moving coil unit, through holes are formed in the middle parts of the first shielding plate, the circuit board and the second shielding plate in a penetrating mode, and filter cotton covers the through holes; the moving coil unit and the battery are electrically connected with the circuit board.

8. The high fidelity stereo moving coil earpiece of claim 7, wherein: the moving coil unit comprises a T iron, a voice film, a voice coil and an external magnet; the sound film, the external magnet and the T iron are sequentially arranged in the mounting cavity, and the sound film is close to the sound outlet; the T iron comprises a bottom plate and a bulge arranged in the middle of the bottom plate; the bulge is close to the sound film, the outer magnet is sleeved outside the bulge, and an accommodating groove is formed between the outer magnet and the bulge; one end of the voice coil is connected with the sound film, and the other end of the voice coil is movably accommodated in the accommodating groove; the circuit board is electrically connected with the voice coil; the middle of the bulge is provided with a first through hole in a penetrating mode, the bottom plate is provided with at least one second through hole in a penetrating mode, and the second through hole is communicated with the accommodating groove.

9. The high fidelity stereo moving coil earpiece of claim 8, wherein: an installation groove is dug at the bottom of the bulge, and the first through hole is communicated with the installation groove; an inner magnet is arranged in the mounting groove, the inner magnet and the outer magnet are arranged in an inner-outer corresponding mode, and a first clearance hole for avoiding the first through hole penetrates through the middle of the inner magnet.

10. The high fidelity stereo moving coil earpiece of claim 9, wherein: and a washer is arranged between the outer magnet and the voice film, and a second clearance hole for avoiding the voice coil penetrates through the middle part of the washer.

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