Earphone

Abstract

The present application discloses an earphone. The earphone comprises a housing, a sound production assembly and an air guide structure. A first mounting cavity and a second mounting cavity which are isolated from each other are formed in the housing. Sound outlet holes are further formed in the front side of the housing. The sound production assembly comprises a first loudspeaker unit and a second loudspeaker unit. The first loudspeaker unit divides the first mounting cavity into a first front cavity and a first rear cavity, and the first front cavity is communicated with the sound outlet holes. The second loudspeaker unit divides the second mounting cavity into a second front cavity and a second rear cavity. The air guide structure is arranged in the housing, and comprises an air guide channel. The air guide channel is used for enabling the second front cavity to be communicated with the outside. The technical solution of the present application can solve the problem of requirements of users for the acoustic performance of earphones, so as to improve the listening clarity of users, thereby improving the listening experience of users.

Description

Earphone

[0001] The present application claims priority to the Chinese patent application No. 202420944397.9, filed on April 30, 2024, and entitled "Earphone", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of earphones, and in particular to an earphone. BACKGROUND

[0003] An earphone is a pair of transducer units that convert electrical signals from a media player or receiver into sound waves that can be heard through earpieces.

[0004] In the related art, the conventional earphone usually adopts a single speaker to play a useful signal through the speaker, and the useful signal can be transmitted to the human ear to realize the sound listening of the human ear. However, in some noisy scenes, the environmental noise signal in the external environment can also be transmitted to the human ear, and the environmental noise signal will interfere with the useful signal, which will affect the sound listening clarity of the human ear, and even cause the user to hear the useful signal unclearly, which seriously affects the auditory experience. SUMMARY

[0005] The present application provides an earphone, which can solve the problem of the acoustic performance requirement of the user, improve the sound listening clarity of the user, and improve the auditory experience of the user.

[0006] The present application provides an earphone, which includes a shell, a sound generating assembly, and a gas guiding structure. The shell is provided with a first installation cavity and a second installation cavity which are isolated from each other, and the front side of the shell is further provided with a sound outlet hole. The sound generating assembly includes a first speaker unit and a second speaker unit. The first speaker unit divides the first installation cavity into a first front cavity and a first rear cavity, and the first front cavity is in communication with the sound outlet hole. The second speaker unit divides the second installation cavity into a second front cavity and a second rear cavity. The gas guiding structure is arranged on the shell, and includes a gas guiding channel for connecting the second front cavity with the external environment.

[0007] The earphone based on the embodiment of the application has the first mounting cavity and the second mounting cavity which are isolated from each other in the shell, the first loudspeaker unit divides the first mounting cavity into the first front cavity and the first rear cavity, the first front cavity is in communication with the sound outlet hole of the shell, the second loudspeaker unit divides the second mounting cavity into the second front cavity and the second rear cavity, and the second front cavity is in communication with the outside through the air guide channel of the air guide structure. Thus, the sound range of the earphone is widened, the sound quality effect of a wider sound range is obtained in the audible sound range, the level and detail of the sound quality are better, and the original sound can be better reproduced, so that the overall performance of the earphone is improved. In addition, the first front cavity is in communication with the outside through the sound outlet hole, and the second front cavity is in direct communication with the outside through the air guide channel, so that the air volume in the first front cavity and the second front cavity is sufficient, the mass of the vibrating air during the operation of the earphone is improved, the sound air pressure of the earphone is increased, the listening clarity of the user is improved, and the auditory experience of the user is improved. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0009] FIG. 1 is a structural schematic diagram of an embodiment of the earphone of the application;

[0010] FIG. 2 is a partial structural schematic diagram of the shell of the earphone of the application;

[0011] FIG. 3 is a sectional structural schematic diagram of the earphone of the application at A-A in an embodiment;

[0012] FIG. 4 is a sectional structural schematic diagram of the earphone of the application at B-B in another embodiment;

[0013] FIG. 5 is a sectional structural schematic diagram of the earphone of the application at A-A in another embodiment;

[0014] FIG. 6 is a sectional structural schematic diagram of the earphone of the application at B-B in another embodiment;

[0015] FIG. 7 is a sectional structural schematic diagram of the earphone of the application at B-B in another embodiment.

[0016] Explanation of reference numerals: 100, earphone; 10, housing; 10A, first mounting cavity; 10a, first front cavity; 10b, first rear cavity; 10B, second mounting cavity; 10c, second front cavity; 10d, second rear cavity; 10C, air vent; 10D, sound pickup hole; 11, first casing; 111, front casing; 1111, sound outlet hole; 1112, first flow channel; 112, rear casing; 1121, second flow channel; 113, partition; 11A, air guide passage; 11a, first air guide hole; 11b, second air guide hole; 11c, third air guide hole; 11d, main body; 12, second casing; 13, third casing; 20, sound production assembly; 20A, first loudspeaker unit; 20B, second loudspeaker unit; 21, vibration system; 211, diaphragm; 22, magnetic circuit system; 23, yoke; 30, sound pickup microphone.

[0017] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the embodiments of the present application in conjunction with the accompanying drawings.

[0019] The following description relates to the accompanying drawings, unless otherwise indicated, the same reference numerals in different drawings represent the same or similar elements. The implementation described in the following exemplary embodiments does not represent all the implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0020] In the description of the present application, it is to be understood that the terms "first", "second" and the like are used only for descriptive purposes and are not to be construed as indicating or implying relative importance. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in specific cases. In addition, in the description of the present application, unless otherwise stated, "multiple" means two or more. "And / or", the association between the associated objects, means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents a "or" relationship between the associated objects before and after.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] A headset is a pair of transducing units that convert electrical signals from a media player or receiver into sound waves that can be heard through earpieces.

[0023] In the related art, the conventional earphone usually adopts a single speaker to play a useful signal through the speaker, and the useful signal can be transmitted to the human ear to realize the listening of the human ear. However, in some noisy scenes, the external environmental noise signal may also be transmitted to the human ear, and the environmental noise signal will interfere with the useful signal, which will affect the listening clarity of the human ear, and even cause the user to hear the useful signal unclearly, which seriously affects the auditory experience.

[0024] To solve the above problems, please refer to FIG. 1, the present application provides an earphone 100, wherein the type of the earphone 100 can be open type, in-ear type and head-mounted type and the like. It can be known that when the type of the earphone 100 is open type, the user has no obvious sense of isolation from the outside world when using the open type earphone, has the advantages of natural and open listening feeling, and sound penetration, and when the type of the earphone 100 is in-ear type, it has the advantages of isolating external noise and focusing sound quality. And when the type of the earphone 100 is head-mounted type, it is more stable to wear.

[0025] In the following, the present application is described as the type of the earphone 100 being open type.

[0026] The open type earphone 100 can be an air conduction type earphone or a bone conduction type earphone. Among them, the air conduction type earphone is built-in speaker unit, and the sound cavity is provided with apertures for directional conduction of sound. The bone conduction type earphone 100 is built-in oscillator, which can convert sound signals into vibration and then conduct through the skeleton. It can be understood that the open type earphone 100 should at least have a wearing state, which is a state that the open type earphone 100 cooperates with the ear of the user to be relatively fixed, in which state the user can obtain a relatively ideal listening effect.

[0027] Please refer to FIGS. 1 to 3, the earphone 100 can include a shell 10, a sound generating assembly 20 and a gas guiding structure.

[0028] The shell 10 is used to carry and protect the sound production assembly 20. In order to ensure the hardness of the shell 10, the shell 10 can be made of plastic material or metal material to meet the ability of various drop, distortion and sitting pressure tests without being damaged. It should be noted that the material of the shell 10 is not limited to a certain kind, and the commonly used shell 10 materials in the art can be applied to the embodiments of the present application, which will not be listed one by one here. The front side of the shell 10 is also provided with a sound outlet hole 1111. When the earphone 100 (for example, an open earphone) is worn on the ear of the user, the sound outlet hole 1111 is arranged towards the ear canal of the ear, so that in the actual working process, the sound of the sound production assembly 20 can be conducted to the ear of the user through the sound outlet hole 1111. Specifically, the number of sound outlet holes 1111 can be two, three or more, which is not limited in the present application.

[0029] The sound production assembly 20 includes a first loudspeaker unit 20A and a second loudspeaker unit 20B. Optionally, the first loudspeaker unit 20A and the second loudspeaker unit 20B are a combination of any two of air-conduction moving coil loudspeakers, moving iron loudspeakers, piezoelectric loudspeakers, and electromagnetic loudspeakers. Among them, the combination of the first loudspeaker unit 20A and the second loudspeaker unit 20B includes but is not limited to air-conduction moving coil loudspeakers and air-conduction moving coil loudspeakers, air-conduction moving coil high-frequency loudspeakers and air-conduction moving coil low-frequency loudspeakers, air-conduction moving coil loudspeakers and moving iron loudspeakers, air-conduction moving coil loudspeakers and MEMS loudspeakers, air-conduction moving coil loudspeakers and piezoelectric loudspeakers, air-conduction moving coil loudspeakers and electromagnetic loudspeakers, etc., so as to realize different required high-frequency, medium-frequency or low-frequency sound output proportion selection corresponding combinations to achieve different sound output effects.

[0030] The first mounting cavity 10A and the second mounting cavity 10B are arranged in the shell 10 and are isolated from each other. The first speaker unit 20A divides the first mounting cavity 10A into a first front cavity 10a and a first rear cavity 10b. The first front cavity 10a is in communication with the sound hole 1111. The second speaker unit 20B divides the second mounting cavity 10B into a second front cavity 10c and a second rear cavity 10d. The first speaker unit 20A and the second speaker unit 20B are used to convert an accepted electrical signal into audible sound waves. The periphery of the first speaker unit 20A and the second speaker unit 20B is sealingly connected to the inner wall of the shell 10 to define the front cavity and the rear cavity for the corresponding mounting cavity. It can be understood that the aforementioned "sealingly connected" means that the two components are connected and the connection position between the two components is sealed. Specifically, the edge of the first speaker unit 20A and the edge of the second speaker unit 20B are respectively connected to the inner wall of the shell 10, and the connection position between the edge of the first speaker unit 20A and the edge of the second speaker unit 20B and the inner wall of the shell 10 is sealed. That is, the first front cavity 10a and the first rear cavity 10b cannot be in communication through the connection position between the edge of the first speaker unit 20A and the inner wall of the shell 10, and the second front cavity 10c and the second rear cavity 10d cannot be in communication through the connection position between the edge of the second speaker unit 20B and the inner wall of the shell 10. Specifically, the connection mode of the edge of the first speaker unit 20A and the edge of the second speaker unit 20B to the inner wall of the shell 10 includes but is not limited to gluing, clamping, screwing, welding, etc. It can be understood that the first speaker unit 20A and the second speaker unit 20B can adopt the structure of the existing pneumatic speaker, which includes a magnetic circuit system 22 and a vibration system 21. The main control board is electrically connected to the magnetic circuit system 22 of the speaker unit to control the vibration of the diaphragm 211 by controlling the magnetic circuit system 22, thereby making sound from the sound hole 1111. It can be understood that the vibration system 21 can include a diaphragm 211 and a voice coil. In actual working process, the diaphragm 211 drives the air to vibrate, so that the air can conduct sound through the sound hole 1111. The magnetic circuit system 22 can include a magnetic bowl, a magnet and a horn. The magnet and the horn are connected and are installed on the magnetic bowl. The magnetic circuit system 22 can provide the magnetic field required by the voice coil. The principle of the magnetic circuit system 22 and the vibration system 21 has been disclosed in the related art, and will not be described here.

[0031] Referring to FIGS. 2-4, in some structural forms, in order to ensure the low-frequency performance of the earphone 100, the shell 10 is provided with at least two air release holes 10C, one air release hole 10C is in communication with the first rear cavity 10b and the outside, and the other air release hole 10C is in communication with the second rear cavity 10d and the outside, wherein the two air release holes 10C can be respectively arranged on opposite sides of the shell 10, or the two air release holes 10C are arranged on the same side of the shell 10. At the same time, the shortest distance from the axis of the first speaker unit 20A and the second speaker unit 20B to the outer surface of the air release hole 10C is between 0 and 200 mm, so as to avoid that the shortest distance from the axis of the first speaker unit 20A and the second speaker unit 20B to the outer surface of the air release hole 10C is too large, so as to ensure the air release efficiency.

[0032] Referring to FIGS. 2 and 3, in some structural forms, the front side of the shell 10 is also provided with a pickup hole 10D, the pickup hole 10D is in communication with the first front cavity 10a, and the earphone 100 further comprises a pickup microphone 30, the pickup microphone 30 is arranged in the shell 10 and is arranged corresponding to the pickup hole 10D, and the pickup microphone 30 is used to pick up external environmental noise. It can be understood that the pickup microphone 30 is arranged in the shell 10 and arranged corresponding to the pickup hole 10D, so that the external environmental noise can be picked up through the pickup hole 10D. The noise signal is transmitted to the first speaker unit 20A in reverse through the circuit, and the reverse noise signal output by the first speaker unit 20A is offset with the noise signal directly entering the user's ear, so as to achieve the purpose of reducing noise. Of course, in order to improve the noise reduction effect, a plurality of pickup microphones 30 and a plurality of pickup holes 10D can be used in cooperation to improve the effect of picking up noise.

[0033] It should be noted that the first mounting cavity 10A and the second mounting cavity 10B, and the first speaker unit 20A and the second speaker unit 20B are described in the embodiments, and of course in other embodiments, a third mounting cavity or more mounting cavities can be arranged in the shell 10, and a third speaker unit is arranged corresponding to the third mounting cavity to separate the third mounting cavity into a third front cavity and a third rear cavity. At the same time, the air guide channel 11A simultaneously communicates the third front cavity of the third mounting cavity with the outside, so that the front cavities of each mounting cavity are in communication with the outside.

[0034] Referring to FIGS. 2-4, the air guide structure is arranged in the shell 10, and the air guide channel 11A of the air guide structure communicates the second front cavity 10c with the outside. It should be noted that the air guide structure can be a part of the shell 10, or an external pipeline piece can be detachably connected to the shell 10 and in communication with the second front cavity 10c.

[0035] Therefore, the sound quality effect of a wider sound range can be obtained in the audible sound range, the level and detail performance of the sound quality are better, and the original sound can be better reproduced, so as to improve the overall performance of the earphone 100. In addition, the first front cavity 10a is in communication with the outside through the sound hole 1111, and the second front cavity 10c is in communication with the outside through the air guide channel 11A, so as to ensure that the air volume in the first front cavity 10a and the second front cavity 10c is sufficient, so as to improve the mass of the vibrating air during the operation of the earphone 100, thereby increasing the sound pressure of the earphone 100, and improving the listening clarity of the user and the auditory experience of the user.

[0036] Referring to FIG. 3, in an embodiment, the air guide channel 11A includes a main body 11d, a first air guide hole 11a in communication with the main body 11d, and a second air guide hole 11b. The first air guide hole 11a is in communication with the second front cavity 10c. The second air guide hole 11b is in communication with the first front cavity 10a. In this way, the air outside the shell 10 can enter the first front cavity 10a through the sound hole 1111, and then enter the main body 11d through the second air guide hole 11b, so as to be transmitted into the second front cavity 10c through the first air guide hole 11a, so that the air guide channel 11A is not directly in communication with the outside of the shell 10, and the probability of the air guide channel 11A being blocked is reduced.

[0037] Optionally, the first air guide hole 11a is arranged along the circumference of the second front cavity 10c, so as to increase the communication area between the second front cavity 10c and the air guide channel 11A, and improve the flow efficiency of air vibration between the second front cavity 10c and the air guide channel 11A. This design optimizes the air flow path and reduces unnecessary air resistance that may cause sound distortion or mixing. Thus, the strength and clarity of the sound are further enhanced.

[0038] Optionally, the second air guide hole 11b is arranged along the circumference of the first front cavity 10a. In this way, the communication area between the first front cavity 10a and the air guide channel 11A is increased, so as to improve the flow efficiency of air vibration between the first front cavity 10a and the air guide channel 11A. This design optimizes the air flow path, so as to further enhance the strength and clarity of the sound.

[0039] Referring to FIG. 4, in another embodiment, the air guide channel 11A comprises a main body 11d, a first air guide hole 11a in communication with the main body 11d and a third air guide hole 11c. The first air guide hole 11a is in communication with the second front cavity 10c. The third air guide hole 11c is in communication with the outside. In this way, the air outside the housing 10 enters the first front cavity 10a through the sound outlet hole 1111, and then enters the main body 11d of the air guide channel 11A through the third air guide hole 11c, and is then transmitted into the second front cavity 10c through the first air guide hole 11a. In this way, the first front cavity 10a and the second front cavity 10c are not in communication with each other, so that the air in the first front cavity 10a is not affected by the air guide channel 11A. This separation design can further optimize the sound vibration effect and provide more flexible adjustment options for different sound environments.

[0040] Optionally, the third air guide hole 11c and the sound outlet hole 1111 are opened on the same surface of the housing 10, that is, the third air guide hole 11c is also arranged towards the ear canal opening, so that the risk of the third air guide hole 11c being blocked when the earphone 100 is worn is relatively small, so as to stabilize the stability of the air communication in the air guide channel 11A. Further, the third air guide hole 11c can be provided with two, three or more, and the third air guide holes 11c are oriented in different directions to adapt to the orientation of different ear canal openings.

[0041] Referring to FIGS. 5 and 6, in yet another embodiment, the air guide channel 11A comprises a main body 11d, a first air guide hole 11a in communication with the main body 11d, a second air guide hole 11b and a third air guide hole 11c. The first air guide hole 11a is in communication with the second front cavity 10c. The second air guide hole 11b is in communication with the first front cavity 10a. The third air guide hole 11c is in communication with the outside. In this way, the air guide channel 11A simultaneously communicates with the outside, the first front cavity 10a and the second front cavity 10c, so as to realize multiple ways of air communication in the air guide channel 11A and the outside, so as to ensure the stability of the air flow in the air guide channel 11A and reduce unnecessary air resistance that may cause sound distortion or mixing. Thus, the strength and clarity of the sound can be further enhanced.

[0042] Optionally, the main body 11d is arranged around the outer periphery of the first mounting cavity 10A and the outer periphery of the second mounting cavity 10B. In this way, the volume of the main body 11d of the air guide channel 11A is further increased, the volume of the air pushed during operation is further increased, the overall vibrating air mass is larger, and the sound pressure of the earphone 100 can be further increased, so that the strength and clarity of the sound can be enhanced.

[0043] Referring to FIGS. 3-6, in some structural forms, the first mounting cavity 10A and the second mounting cavity 10B are arranged in a stacked manner along the axial extension direction of the sound outlet hole 1111, and the vibration directions of the first speaker unit 20A and the second speaker unit 20B are the same as the axial direction of the sound outlet hole 1111. This means that their vibration sound waves will work together and superimpose on each other, thereby producing a more powerful and consistent sound effect. Of course, in other embodiments, the first mounting cavity 10A and the second mounting cavity 10B can also be arranged side by side along the radial direction of the sound outlet hole 1111, so that the two speaker units are arranged side by side along the radial direction of the sound outlet hole 1111. In this way, the internal structure of the shell 10 can be arranged compactly and efficiently. This design not only helps to reduce the overall thickness of the earphone 100, improving the portability of the device, but also makes the earphone 100 more lightweight and comfortable, suitable for long-term wear.

[0044] Further, the second front cavity 10c and the first rear cavity 10b are arranged adjacent to each other. It can be understood that the first speaker unit 20A and the second speaker unit 20B each include a spider 23 supporting a magnetic circuit system 22 and a vibration system 21. The side of the diaphragm 211 of the vibration system 21 opposite to the spider 23 is the front cavity, and the side of the spider 23 opposite to the diaphragm 211 is the rear cavity. That is, the diaphragms 211 of the two speaker units are arranged in the same direction, which means that their sound waves will work together and superimpose on each other, thereby producing a more powerful and consistent sound effect. This design of same-direction vibration helps to improve the consistency of the sound, making the sound of different frequencies more coordinated, and the user can obtain a more balanced and natural listening experience. Referring to FIG. 7, in still another embodiment, the first rear cavity 10b and the second rear cavity 10d are arranged adjacent to each other. That is, the diaphragms 211 of the two speaker units are arranged in opposite directions, which can offset the vibration-induced shock of the two speaker units, thereby improving the comfort of the user when wearing.

[0045] In some structural forms, the axes of the first speaker unit 20A and the second speaker unit 20B are arranged at an angle, and the angle is greater than or equal to 0° and less than or equal to 45°. It can be understood that the angle between the axes of the first speaker unit 20A and the second speaker unit 20B can be 0°, 15°, 30°, 45°, etc. In this way, by limiting the angle between the axes of the first speaker unit 20A and the second speaker unit 20B, the angle between the axes of the two speaker units is prevented from being too large, so as to ensure the superposition strength of the vibration directions of the two speaker units and improve the sound effect of the earphone 100.

[0046] Optionally, the distance between the axes of the first speaker unit 20A and the second speaker unit 20B is between 0mm and 200mm. When the distance between the axes of the first speaker unit 20A and the second speaker unit 20B is 0mm, the first speaker unit 20A and the second speaker unit 20B are coaxially arranged. When the distance between the axes of the first speaker unit 20A and the second speaker unit 20B can be 50mm, 100mm or 200mm, etc., the axes of the first speaker unit 20A and the second speaker unit 20B are arranged in parallel. By limiting the distance between the axes of the first speaker unit 20A and the second speaker unit 20B, the vibration direction of the first speaker unit 20A and the second speaker unit 20B is ensured to have a strong superposition, and the sound effect of the earphone 100 is improved. Further, when the angle between the axes of the first speaker unit 20A and the second speaker unit 20B is 0° and the distance between the axes of the first speaker unit 20A and the second speaker unit 20B is 0mm, i.e., the axes of the first speaker unit 20A and the second speaker unit 20B are coaxially arranged, the axes are concentric, which means that the vibration direction of the first speaker unit 20A and the second speaker unit 20B is completely the same, and the phase is also the same, so as to further improve the superposition of the vibration direction of the first speaker unit 20A and the second speaker unit 20B, and improve the sound effect of the earphone 100.

[0047] With reference to FIG. 1, FIG. 2, FIG. 5 and FIG. 6, optionally, the shell 10 can include a first casing 11, a second casing 12 and a third casing 13, wherein the first casing 11 forms a first mounting cavity 10A and a second mounting cavity 10B therein, and the first casing 11 is provided with a sound outlet hole 1111. One end of the second casing 12 is connected to the first casing 11 and is used to hang between the upper side of the ear and the head of the user in the wearing state. The other end of the second casing 12 is connected to the third casing 13, and the third casing 13 is used to be attached between the rear side of the ear and the head of the user in the wearing state. The second casing 12 and the third casing 13 are both arc-shaped curved and form a shape of a hook. The second casing 12 and the third casing 13 at least contact the front and rear sides of the ear of the user to achieve clamping and fixing with the ear of the user, so that the first casing 11 connected to one end of the second casing 12 can be stably arranged on the front side of the ear. It can be understood that the second casing 12 and the third casing 13 have a certain elasticity, so that the user can bend the second casing 12 and the third casing 13 to cooperate the first casing 11 with the ear. The third casing 13 is provided with a battery and a circuit board, and the circuit board is electrically connected with the first speaker unit 20A and the second speaker unit 20B to control the vibration of the diaphragm 211 of the first speaker unit 20A and the second speaker unit 20B to sound. The battery is electrically connected to the circuit board to provide power for the first speaker unit 20A and the second speaker unit 20B.

[0048] It should be noted that the first casing 11, the second casing 12 and the third casing 13 can be connected by clamping and screwing, etc. detachable manner, so as to facilitate maintenance and replacement. Of course, the first casing 11, the second casing 12 and the third casing 13 can also be integrally formed, for example, by injection molding, to improve the stability of the overall structure of the shell 10.

[0049] The air guide structure is formed in the first casing 11 and is part of the first casing 11, and the air guide channel 11A includes a first flow channel 1112 and a second flow channel 1121. Further, the first casing 11 includes a front shell 111, a rear shell 112 and a partition plate 113, and the front shell 111 is provided with a sound outlet hole 1111 and a sound pickup hole 10D. The front shell 111 and the rear shell 112 are both double-layer structures, and the first flow channel 1112 is formed between the outer layer and the inner layer of the front shell 111, and the second flow channel 1121 is formed between the outer layer and the inner layer of the inner shell of the rear shell 112. The front shell 111 and the rear shell 112 are butted to connect the first flow channel 1112 and the second flow channel 1121 to form the air guide channel 11A, and the partition plate 113 is connected between the front shell 111 and the rear shell 112 to form the first mounting cavity 10A and the second mounting cavity 10B in a stacked manner.

[0050] Therefore, during installation, the first speaker unit 20A can be installed in the front shell 111 first, and then the second speaker unit 20B can be installed in the rear shell 112. After that, the middle partition 113 can be arranged between the front shell 111 and the rear shell 112, and the front shell 111 and the rear shell 112 are docked to complete the fixation of the first speaker unit 20A and the second speaker unit 20B. In this way, the installation method is simple and fast, and the installation efficiency is improved. At the same time, the front shell 111 and the rear shell 112 are docked to make the first flow channel 1112 and the second flow channel 1121 communicate to form the air guide channel 11A. In this way, the air guide channel 11A is convenient to dredge later. It can be understood that the connection methods of the front shell 111 and the rear shell 112 include but are not limited to gluing, clamping, screwing, welding, etc.

[0051] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0052] The above is only a preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An earphone, characterized by comprising: The application relates to a loudspeaker, which comprises a shell, a sound emitting assembly and a gas guiding structure. The shell is internally provided with a first mounting cavity and a second mounting cavity which are isolated from each other, and the front side of the shell is further provided with a sound hole. The sound emitting assembly comprises a first loudspeaker unit and a second loudspeaker unit, the first loudspeaker unit divides the first mounting cavity into a first front cavity and a first rear cavity, and the first front cavity is communicated with the sound hole; the second loudspeaker unit divides the second mounting cavity into a second front cavity and a second rear cavity. The gas guiding structure is arranged in the shell, and the gas guiding structure comprises a gas guiding channel which is used for communicating the second front cavity with the outside. The gas guiding channel comprises a main body, a first gas guiding hole and a second gas guiding hole which are communicated with the main body, the first gas guiding hole is communicated with the second front cavity, and the second gas guiding hole is communicated with the first front cavity.

2. The earphone of claim 1, wherein The first gas guiding hole is arranged along the circumference of the second front cavity.

3. The earphone of claim 2, wherein The second gas guiding hole is arranged along the circumference of the first front cavity.

4. The earphone of claim 2, wherein The gas guiding channel comprises a main body, a first gas guiding hole and a third gas guiding hole which are communicated with the main body, the first gas guiding hole is communicated with the second front cavity, and the third gas guiding hole is communicated with the outside.

5. The earphone of claim 1, wherein The third gas guiding hole and the sound hole are arranged on the same surface of the shell.

6. The earphone of claim 5, wherein The third gas guiding hole is provided with a plurality of third gas guiding holes.

7. The earphone of claim 5, wherein The plurality of third gas guiding holes are arranged in different directions.

8. The earphone of claim 5, wherein The main body is arranged around the outer circumferences of the first mounting cavity and the second mounting cavity.

9. The earphone of claim 2, wherein The first mounting cavity and the second mounting cavity are arranged in a stacking mode along the axial extension direction of the sound hole, and the vibration directions of the first loudspeaker unit and the second loudspeaker unit are the same as the axial direction of the sound hole.

10. The earphone of claim 1, wherein The second front cavity and the first rear cavity are arranged adjacently.

11. The earphone of claim 10, wherein The first rear cavity and the second rear cavity are arranged adjacently.

12. The earphone of claim 10, wherein The axes of the first loudspeaker unit and the second loudspeaker unit are arranged at an included angle, and the included angle is greater than or equal to 0 DEG and less than or equal to 45 DEG.

13. The earphone of claim 10, wherein The distance between the axes of the first loudspeaker unit and the second loudspeaker unit is between 0 mm and 200 mm.

14. The earphone of claim 10, wherein The gas guiding structure is formed in the shell, wherein the gas guiding channel comprises a first flow channel and a second flow channel.

15. The earphone of claim 1, wherein The shell comprises a front shell, a rear shell and a middle partition plate, the front shell is provided with the sound hole, the first flow channel is arranged in the front shell, the second flow channel is arranged in the rear shell, the front shell and the rear shell are abutted to make the first flow channel and the second flow channel communicated to form the gas guiding channel, and the middle partition plate is connected between the front shell and the rear shell to form the first mounting cavity and the second mounting cavity which are arranged in a stacking mode. The front shell and the rear shell are both double-layer structures, the first flow channel is formed between the outer layer and the inner layer of the front shell, and the second flow channel is formed between the outer layer and the inner layer of the inner shell of the rear shell.

16. The earphone of claim 15, wherein The connection mode of the front shell and the rear shell comprises any one of gluing, clamping, screwing and welding.

17. The earphone of claim 15, wherein ​ 18. The earphone of claim 1, wherein The shell is provided with at least two air release holes, one of which is communicated with the first rear cavity and the outside, and the other of which is communicated with the second rear cavity and the outside, the shortest distance between the axis of the first speaker unit and the outer surface where the air release hole is located is between 0 and 200 mm, and the shortest distance between the axis of the second speaker unit and the outer surface where the air release hole is located is between 0 and 200 mm.

19. The earphone of claim 1, wherein The front side of the shell is also provided with a sound pickup hole communicated with the first front cavity, and the earphone further comprises a sound pickup microphone arranged in the shell and corresponding to the sound pickup hole, which is used for picking up external environmental noise.

20. The earphone of claim 1, wherein The first speaker unit and the second speaker unit are any two combinations of air-conducting moving coil speakers, moving iron speakers, piezoelectric speakers and electromagnetic speakers.

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