Earphone

Abstract

The utility model discloses an earphone, the earphone comprises a shell, a sound production assembly and an air guide structure, the shell is internally 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 also provided with a sound outlet hole. The sound production assembly comprises a first loudspeaker single body and a second loudspeaker single body, the first loudspeaker single body 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 hole; the second loudspeaker unit divides the second installation cavity into a second front cavity and a second rear cavity. The air guide structure is arranged on the shell and comprises an air guide channel, and the air guide channel is used for communicating the second front cavity with the outside. According to the technical scheme of the invention, the requirement of a user on the acoustic performance of the earphone can be met, the audition definition of the user is improved, and the auditory experience of the user is improved.

Description

Technical Field

[0001] This application relates to the technical field of earphones, and particularly to an earphone. Background Art

[0002] An earphone is a pair of transducer units that receive electrical signals emitted by a media player or receiver and convert them into audible sound waves through speaker elements close to the ears.

[0003] In related technologies, currently traditional earphones usually adopt a single speaker, and useful signals are played through its speaker. The useful signals can be transmitted to the human ear to achieve sound listening by the human ear. However, in some noisy scenarios, external environmental noise signals may also be transmitted to the human ear, and the environmental noise signals will interfere with the useful signals, which will affect the clarity of sound listening by the human ear, and even cause the user to be unable to clearly hear the useful signals, seriously affecting the auditory experience. Summary of the Utility Model

[0004] Embodiments of this application provide an earphone, which can solve the problem of the user's demand for the acoustic performance of the earphone, so as to improve the clarity of sound listening by the user and enhance the user's auditory experience.

[0005] Embodiments of this application provide an earphone, which includes a housing, a sound generating assembly, and an air guiding structure. A first installation cavity and a second installation cavity that are isolated from each other are arranged in the housing, and a sound outlet hole is further provided on the front side of the housing. The sound generating assembly includes a first speaker element and a second speaker element. The first speaker element divides the first installation cavity into a first front cavity and a first rear cavity, and the first front cavity communicates with the sound outlet hole; the second speaker element divides the second installation cavity into a second front cavity and a second rear cavity. The air guiding structure is arranged on the housing, and the air guiding structure includes an air guiding channel for communicating the second front cavity with the outside.

[0006] Based on the earphone of the embodiment of the present application, by providing a first installation cavity and a second installation cavity that are isolated from each other in the housing, at the same time, the first speaker unit divides the first installation cavity into a first front cavity and a first rear cavity, the first front cavity is communicated with the sound outlet hole of the housing, and a second speaker unit is provided to divide the second installation cavity into a second front cavity and a second rear cavity, and the second front cavity is communicated with the outside through the air guide channel of the air guide structure. In this way, by combining the sound ranges of the first speaker unit and the second speaker unit, the present application improves the sound output effect of the earphone compared with a single speaker, and can obtain a sound quality effect with a wider sound range within the audible sound range, and the layering and detail performance of the sound quality are better, and the original sound can be reproduced better, thereby improving the overall performance of the earphone. In addition, the first front cavity is communicated with the outside through the sound outlet hole, and the second front cavity is directly communicated with the outside through the air guide channel, so as to ensure that the air volume in the first front cavity and the second front cavity is sufficient, so as to improve the quality of the vibrating air when the earphone works, thereby increasing the sound pressure of the earphone, and further improving the user's listening clarity and enhancing the user's auditory experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the structures shown in these drawings.

[0008] Figure 1 It is a schematic structural diagram of an embodiment of the earphone of the present application;

[0009] Figure 2 It is a partial structural diagram of the housing of the earphone of the present application;

[0010] Figure 3 It is a schematic cross-sectional structural diagram of the earphone of the present application at A-A in an embodiment;

[0011] Figure 4 It is a schematic cross-sectional structural diagram of the earphone of the present application at B-B in another embodiment;

[0012] Figure 5 It is a schematic cross-sectional structural diagram of the earphone of the present application at A-A in yet another embodiment;

[0013] Figure 6 It is a schematic cross-sectional structural diagram of the earphone of the present application at B-B in yet another embodiment;

[0014] Figure 7 It is a schematic cross-sectional structural diagram of the earphone of the present application at B-B in still another embodiment.

[0015] Explanation of the reference numerals in the drawings:

[0016] 100, Headphone; 10, Housing; 10A, First Installation Cavity; 10a, First Front Cavity; 10b, First Rear Cavity; 10B, Second Installation Cavity; 10c, Second Front Cavity; 10d, Second Rear Cavity; 10C, Air Vent Hole; 10D, Sound Pickup Hole; 11, First Housing; 111, Front Shell; 1111, Sound Outlet Hole; 1112, First Flow Channel; 112, Rear Shell; 1121, Second Flow Channel; 113, Middle Partition; 11A, Air Conducting Channel; 11a, First Air Guide Hole; 11b, Second Air Guide Hole; 11c, Third Air Guide Hole; 11d, Main Body; 12, Second Housing; 13, Third Housing; 20, Sound Generating Component; 20A, First Speaker Unit; 20B, Second Speaker Unit; 21, Vibration System; 211, Diaphragm; 22, Magnetic Circuit System; 23, Speaker Frame; 30, Sound Pickup Microphone.

[0017] The realization of the purpose of this application, functional features and advantages will be further described in conjunction with embodiments with reference to the accompanying drawings. Detailed Embodiments

[0018] To make the purpose, technical solutions and advantages of this application clearer, the following will further describe the embodiments of this application in detail in conjunction with the accompanying drawings.

[0019] When the following description involves the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. On the contrary, they are only examples of devices and methods that are consistent with some aspects of this application as detailed in the appended claims.

[0020] In the description of this application, it should be understood that terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "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 those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] An earphone is a pair of transducer units that receive electrical signals emitted by a media player or receiver and convert them into audible sound waves through speaker elements close to the ears.

[0023] In related technologies, currently traditional earphones usually adopt a single speaker, and useful signals are played through its speaker. The useful signals can be transmitted to the human ear to achieve sound listening by the human ear. However, in some noisy scenarios, external environmental noise signals may also be transmitted to the human ear, and the environmental noise signals will interfere with the useful signals, which will affect the clarity of sound listening by the human ear, and even cause the user to not clearly hear the useful signals, seriously affecting the auditory experience.

[0024] To solve the above problems, please refer to Figure 1 , this application proposes an earphone 100. Among them, the type of the earphone 100 can be various types such as open type, in-ear type, and over-ear type. It is known that when the type of the earphone 100 is an open earphone, when the user uses the open earphone, there will be no obvious sense of isolation from the outside world, and it has the advantages of natural, open sound and clear sound. When the type of the earphone 100 is an in-ear earphone, it will have the advantages of isolating external noise and more focused sound quality. When the type of the earphone 100 is an over-ear earphone, it is more stable to wear.

[0025] In the following content, this application still describes the earphone 100 as an open earphone type.

[0026] The open earphone 100 can be an air conduction earphone or a bone conduction earphone. Among them, the air conduction earphone is internally provided with a speaker element, and the sound cavity is provided with pores for directional sound conduction. The bone conduction earphone 100 is internally provided with an oscillator, which can convert sound signals into vibrations and then conduct them through the bones. It can be understood that the open earphone 100 should at least have a wearing state, and the wearing state is a state in which the open earphone 100 cooperates with the user's ear to make it relatively fixed to the user's ear. In this state, the user can obtain a relatively ideal listening effect.

[0027] Please refer to Figures 1 to 3 , the earphone 100 can include a housing 10, a sound generating component 20, and a gas conduction structure.

[0028] The housing 10 is used to carry and protect the sound - generating component 20. To ensure the hardness of the housing 10, the housing 10 can be made of plastic material or metal material to meet the ability not to be damaged in various drop, twist, and sitting - pressure tests. It should be noted that the material of the housing 10 is not limited to a certain type, and the commonly used housing 10 materials in the art can be applied to the embodiments of the present utility model, and will not be listed one by one here. An sound - outlet hole 1111 is also provided on the front side of the housing 10. When the earphone 100 (such as an open - type earphone) is worn on the user's ear, the sound - outlet hole 1111 is arranged facing the ear canal opening of the ear. Thus, in the actual working process, the sound of the sound - generating component 20 can be conducted to the user's ear through the sound - outlet hole 1111. Specifically, the number of the sound - outlet holes 1111 can be two, three, or more, and this application does not limit this.

[0029] The sound - generating component 20 includes a first speaker unit 20A and a second speaker unit 20B. Optionally, the first speaker unit 20A and the second speaker unit 20B are a combination of any two of air - conduction dynamic - coil speakers, balanced - armature speakers, piezoelectric speakers, and electromagnetic speakers. Among them, the combination of the first speaker unit 20A and the second speaker unit 20B includes, but is not limited to, air - conduction dynamic - coil speaker and air - conduction dynamic - coil speaker, air - conduction dynamic - coil high - frequency speaker and air - conduction dynamic - coil low - frequency speaker, air - conduction dynamic - coil speaker and balanced - armature speaker, air - conduction dynamic - coil speaker and MEMS speaker, air - conduction dynamic - coil speaker and piezoelectric speaker, air - conduction dynamic - coil speaker and electromagnetic speaker, etc. Thus, the corresponding combination can be selected to achieve different required high - frequency, mid - frequency, or low - frequency sound - output ratios to achieve different sound - output effects.

[0030] Inside the housing 10, there are a first installation cavity 10A and a second installation cavity 10B that are isolated from each other. The first speaker unit 20A divides the first installation cavity 10A into a first front cavity 10a and a first rear cavity 10b, and the first front cavity 10a communicates with the sound outlet hole 1111. The second speaker unit 20B divides the second installation 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 the received electrical signal into audible sound waves, and the peripheries of the first speaker unit 20A and the second speaker unit 20B are hermetically connected to the inner wall of the housing 10 to divide and define the corresponding installation cavity into a front cavity and a rear cavity. It can be understood that the aforementioned "hermetic connection" can be understood as: two components are connected and sealed at the connection position. Specifically, it can be understood that the edges of the first speaker unit 20A and the second speaker unit 20B are respectively connected to the inner wall of the housing 10, and the connection positions between the edges of the first speaker unit 20A and the second speaker unit 20B and the inner wall of the housing 10 are sealed. That is, the first front cavity 10a and the first rear cavity 10b cannot communicate through the connection position between the edge of the first speaker unit 20A and the inner wall of the housing 10, and the second front cavity 10c and the second rear cavity 10d cannot communicate through the connection position between the edge of the second speaker unit 20B and the inner wall of the housing 10. Specifically, the connection methods between the edges of the first speaker unit 20A and the second speaker unit 20B and the inner wall of the housing 10 include but are 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 structural form of an 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, so as to generate sound from the sound outlet hole 1111. It can be understood that the vibration system 21 can include a diaphragm 211 and a voice coil. During actual operation, the diaphragm 211 will drive the air to vibrate, so that the air can conduct sound through the sound outlet hole 1111. The magnetic circuit system 22 can include a magnetic bowl, a magnet, and a washer. The magnetic bowl can be generally in the form of a circular ring-shaped bowl. The magnet is connected to the washer and both are installed on the magnetic bowl. The magnetic circuit system 22 can provide the necessary magnetic field for the voice coil. The principles of the magnetic circuit system 22 and the vibration system 21 have been publicly known in the related art and will not be elaborated here.

[0031] Refer to Figures 2 to 4, in some structural forms, to ensure the low-frequency performance of the earphone 100, at least two air vents 10C are provided in the housing 10. One air vent 10C communicates the first rear cavity 10b with the outside, and the other air vent 10C communicates the second rear cavity 10d with the outside. Among them, the two air vents 10C can be respectively arranged on opposite sides of the housing 10, or the two air vents 10C are arranged on the same side of the housing 10. At the same time, the shortest distance from the axes of the first speaker unit 20A and the second speaker unit 20B to the outer surface where the air vent 10C is located is between 0 and 200 mm, so as to avoid the shortest distance from the axes of the first speaker unit 20A and the second speaker unit 20B to the outer surface where the air vent 10C is located being too large to ensure the air leakage efficiency.

[0032] Refer to Figure 2 and Figure 3 , in some structural forms, a sound pickup hole 10D is also provided on the front side of the housing 10. The sound pickup hole 10D communicates with the first front cavity 10a. The earphone 100 further includes a sound pickup microphone 30. The sound pickup microphone 30 is arranged in the housing 10 and is correspondingly arranged with the sound pickup hole 10D. The sound pickup microphone 30 is used to pick up external environmental noise. It can be understood that the sound pickup microphone 30 is arranged in the housing 10 and is correspondingly arranged with the sound pickup hole 10D, so that external environmental noise can be picked up through the sound pickup hole 10D. The noise signal is transmitted to the first speaker unit 20A in the reverse direction through the circuit, and the reverse noise signal output by the first speaker unit 20A cancels 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, multiple sound pickup microphones 30 and multiple sound pickup holes 10D can also be provided and used in cooperation to improve the effect of picking up noise.

[0033] It should be noted that this application is described with the embodiments of the first installation cavity 10A and the second installation cavity 10B, as well as the first speaker unit 20A and the second speaker unit 20B. Of course, in other embodiments, a third installation cavity or more installation cavities can be provided in the housing 10, and a third speaker unit is correspondingly provided to divide the third installation cavity into a third front cavity and a third rear cavity for setting. At the same time, the air guide channel 11A communicates the third front cavity of the third installation cavity with the outside at the same time, so that the front cavity of each installation cavity communicates with the outside.

[0034] Refer to Figures 2 to 4 , the air guide structure is arranged in the housing 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 either a part of the housing 10 or an external pipe member detachably connected to the housing 10 and communicating with the second front cavity 10c.

[0035] Thus, by combining the sound ranges of the first speaker unit 20A and the second speaker unit 20B in this application, the sound output effect of the earphone 100 is improved compared to a single speaker. Within the audible sound range, a sound quality effect with a wider sound range can be obtained, and the layering and detail performance of the sound quality are better, and the original sound can be reproduced better, thereby improving the overall performance of the earphone 100. In addition, the first front cavity 10a communicates with the outside through the sound outlet hole 1111, and the second front cavity 10c communicates with the outside through the air guide channel 11A. In this way, it is ensured that there is sufficient air volume in the first front cavity 10a and the second front cavity 10c to improve the quality of the vibrating air when the earphone 100 works, thereby increasing the sound pressure of the earphone 100, and further improving the user's listening clarity and enhancing the user's auditory experience.

[0036] Referring to Figure 3 , in an embodiment, the air guide channel 11A includes a main body 11d, a first air guide hole 11a communicating with the main body 11d, and a second air guide hole 11b. The first air guide hole 11a communicates with the second front cavity 10c. The second air guide hole 11b communicates with the first front cavity 10a. In this way, the air outside the housing 10 can enter the first front cavity 10a through the sound outlet hole 1111, and then enter the main body 11d through the second air guide hole 11b, so as to be transmitted to the second front cavity 10c through the first air guide hole 11a, so that the air guide channel 11A is not directly connected to the outside of the housing 10, reducing the probability of blockage of the air guide channel 11A.

[0037] Optionally, the first air guide hole 11a is arranged to surround the circumference of the second front cavity 10c. In this way, the communication area between the second front cavity 10c and the air guide channel 11A is increased, so as to improve the flow efficiency of the air when vibrating 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. Thereby further enhancing the intensity and clarity of the sound.

[0038] Optionally, the second air guide hole 11b is arranged to surround 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 the air when vibrating between the first front cavity 10a and the air guide channel 11A. This design optimizes the air flow path, thereby further enhancing the intensity and clarity of the sound.

[0039] Referring to Figure 4, in another embodiment, the air guiding channel 11A includes a main body 11d, a first air guiding hole 11a communicating with the main body 11d, and a third air guiding hole 11c. The first air guiding hole 11a communicates with the second front cavity 10c. The third air guiding hole 11c communicates with the outside. Thus, the outside air located outside the housing 10 enters the first front cavity 10a through the sound outlet hole 1111 and enters the main body 11d of the air guiding channel 11A through the third air guiding hole 11c, and then is transmitted into the second front cavity 10c through the first air guiding hole 11a. In this way, the first front cavity 10a and the second front cavity 10c are not connected to each other, so that the air in the first front cavity 10a is not affected by the air guiding 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 guiding hole 11c and the sound outlet hole 1111 are opened on the same surface of the housing 10, that is, the third air guiding hole 11c also faces the ear canal opening. In this way, when the earphone 100 is worn, the risk of blockage of the third air guiding hole 11c is relatively small, so as to stabilize the air connection stability in the air guiding channel 11A. Further, two, three or more third air guiding holes 11c can be provided, and the orientations of the multiple third air guiding holes 11c are different to adapt to different orientations of the ear canal openings.

[0041] Refer to Figure 5 and Figure 6 , in yet another embodiment, the air guiding channel 11A includes a main body 11d, a first air guiding hole 11a, a second air guiding hole 11b, and a third air guiding hole 11c that communicate with the main body 11d. The first air guiding hole 11a communicates with the second front cavity 10c. The second air guiding hole 11b communicates with the first front cavity 10a. The third air guiding hole 11c communicates with the outside. Thus, the air guiding 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 connecting the air in the air guiding channel 11A with the outside, ensure the stability of the air flow in the air guiding channel 11A, and reduce the unnecessary air resistance that may cause sound distortion or mixing. Thereby, the intensity and clarity of the sound are further enhanced.

[0042] Optionally, the main body 11d is disposed 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 guiding channel 11A is further increased, the volume of the air pushed during operation is further increased, so that the mass of the vibrating air is larger, and thus the sound pressure of the earphone 100 can be further increased, so as to enhance the intensity and clarity of the sound.

[0043] Refer to Figures 3 to 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 vibrating 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 housing 10 can be arranged compactly and efficiently. This design not only helps to reduce the overall thickness size of the earphone 100, improves the portability of the device, but also makes the earphone 100 lighter and more comfortable for long-term wearing.

[0044] Furthermore, the second front cavity 10c and the first rear cavity 10b are adjacent to each other. It can be understood that both the first speaker unit 20A and the second speaker unit 20B include a chassis 23 that supports the magnetic circuit system 22 and the vibration system 21. The side of the diaphragm 211 of the vibration system 21 facing away from the chassis 23 is the front cavity, and the side of the chassis 23 facing away from 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 co-directional vibration helps to improve the consistency of the sound, makes the sounds of different frequencies more coordinated, and enables users to obtain a more balanced and natural auditory experience. Refer to Figure 7 , in another embodiment, the first rear cavity 10b and the second rear cavity 10d are adjacent to each other. That is, the diaphragms 211 of the two speaker units are arranged in opposite directions, which can cancel out the vibration sensation generated by the vibration of the two speaker units to improve the comfort of the user's 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 restricting the angle between the axes of the first speaker unit 20A and the second speaker unit 20B, it is possible to avoid too large an angle between the axes of the two speaker units, ensure the superposition intensity of the vibration directions of the two speaker units, and improve the sound output 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 0 mm and 200 mm. Among them, when the distance between the axes of the first speaker unit 20A and the second speaker unit 20B is 0 mm, the first speaker unit 20A and the second speaker unit 20B are coaxially arranged. And the distance between the first speaker unit 20A and the second speaker unit 20B can be 50 mm, 100 mm or 200 mm, etc., so that the axes of the first speaker unit 20A and the second speaker unit 20B are parallel. In this way, by restricting the distance between the axes of the first speaker unit 20A and the second speaker unit 20B, it is possible to avoid too large a distance between the axes of the first speaker unit 20A and the second speaker unit 20B, so as to ensure the superposition intensity of the vibration directions of the first speaker unit 20A and the second speaker unit 20B and improve the sound output effect of the earphone 100. Further, when the included 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 0 mm, that is, the axes of the first speaker unit 20A and the second speaker unit 20B are coaxially arranged and the centers are concentric, which means that the vibration directions of the first speaker unit 20A and the second speaker unit 20B are exactly the same and the phases are also the same, so as to further improve the superposition intensity of the vibration directions of the first speaker unit 20A and the second speaker unit 20B and improve the sound output effect of the earphone 100.

[0047] Combine Figure 1 、 Figure 2 、 Figure 5 And Figure 6Optionally, the housing 10 may include a first housing 11, a second housing 12 and a third housing 13, wherein a first mounting cavity 10A and a second mounting cavity 10B are formed in the first housing 11, and a sound outlet hole 1111 is provided in the first housing 11. One end of the second housing 12 is connected to the first housing 11, and is used to be hung between the upper side of the ear and the user's head in the wearing state. The other end of the second housing 12 is connected to the third housing 13, and the third housing 13 is used to be attached between the back side of the ear and the user's head in the wearing state. The second housing 12 and the third housing 13 are both curved in an arc shape and form a hook shape. The second housing 12 and the third housing 13 are in contact with at least the front and rear sides of the user's ear to achieve clamping and fixing with the user's ear, so that the first housing 11 connected to one end of the second housing 12 can be relatively stably set on the front side of the ear. It can be understood that the second housing 12 and the third housing 13 have a certain elasticity so that the user can bend the second housing 12 and the third housing 13 to match the first housing 11 with the ear. The third housing 13 is equipped with a battery and a circuit board, and the circuit board is electrically connected to 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 produce sound. The battery is electrically connected to the circuit board to provide power to the first speaker unit 20A and the second speaker unit 20B.

[0048] It should be noted that the first housing 11, the second housing 12 and the third housing 13 can be connected in a detachable manner such as snap-fitting and screw-fitting to facilitate maintenance and replacement. Of course, the first housing 11, the second housing 12 and the third housing 13 can also be integrally formed, for example, by injection molding, to improve the stability of the overall structure of the housing 10.

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

[0050] Thus, during installation, the first speaker unit 20A can be first installed in the front shell 111, and then the second speaker unit 20B can be installed in the rear shell 112. After that, the middle partition 113 is disposed between the front shell 111 and the rear shell 112, and the front shell 111 and the rear shell 112 are then docked to complete the fixation of the first speaker unit 20A and the second speaker unit 20B. Such an installation method is simple and fast, improving the installation efficiency. At the same time, by connecting the front shell 111 and the rear shell 112 to communicate the first flow channel 1112 and the second flow channel 1121 to form the air guide channel 11A, it is convenient to dredge the air guide channel 11A in the later stage. It can be understood that the connection manner between the front shell 111 and the rear shell 112 includes but is not limited to glue bonding, snap connection, screw connection, welding, etc.

[0051] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or position relationship, it is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0052] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, and improvements 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 in that, Comprising: A housing, within which a first mounting cavity and a second mounting cavity are provided and isolated from each other, and an sound outlet hole is further provided on the front side of the housing; A sound generating assembly, including a first speaker unit and a second speaker unit, wherein the first speaker unit divides the first mounting cavity into a first front cavity and a first rear cavity, and the first front cavity communicates with the sound outlet hole; the second speaker unit divides the second mounting cavity into a second front cavity and a second rear cavity; And A air guiding structure, provided on the housing, the air guiding structure including an air guiding channel; The air guiding channel includes a main body, a first air guiding hole and a second air guiding hole communicating with the main body, the first air guiding hole communicates with the second front cavity, and the second air guiding hole communicates with the first front cavity.

2. The earphone according to claim 1, wherein, The air guiding channel includes a third air guiding hole, and the third air guiding hole communicates with the outside.

3. The earphone according to claim 2, characterized in that, The third air guiding hole and the sound outlet hole are provided on the same surface of the housing.

4. The earphone according to claim 1, wherein The main body is disposed around the outer periphery of the first mounting cavity and the outer periphery of the second mounting cavity.

5. The earphone according to claim 1, wherein, The first mounting cavity and the second mounting cavity are arranged in a stacked manner along the axial extension direction of the sound outlet hole, and the vibration directions of the first speaker unit and the second speaker unit are the same as the axial direction of the sound outlet hole.

6. The earphone according to claim 5, wherein, The second front cavity and the first rear cavity are adjacent to each other; Or, the first rear cavity and the second rear cavity are adjacent to each other.

7. The earphone according to claim 5, characterized in that, The axes of the first speaker unit and the second speaker unit are arranged at an included angle, and the included angle is greater than or equal to 0° and less than or equal to 45°; And / or, the distance between the axes of the first speaker unit and the second speaker unit is between 0 mm and 200 mm.

8. The earphone according to any one of claims 1 to 7, characterized in that, The air guiding structure is formed within the housing, wherein the air guiding channel includes a first flow channel and a second flow channel; The housing includes a front shell, a rear shell and a middle partition board, the front shell is provided with the sound outlet hole, the first flow channel is provided within the front shell, the second flow channel is provided within the rear shell, the front shell and the rear shell are docked so that the first flow channel and the second flow channel are connected to form the air guiding channel, and the middle partition board is connected between the front shell and the rear shell to enclose with the front shell and the rear shell to form the stacked first mounting cavity and second mounting cavity.

9. The earphone according to any one of claims 1 to 7, characterized in that, The housing is provided with at least two air vent holes, one air vent hole communicates the first rear cavity with the outside, and the other air vent hole communicates the second rear cavity with the outside. The shortest distance between the axis of the first speaker unit and the outer surface where the air vent 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 vent hole is located is between 0 and 200 mm.

10. The earphone according to any one of claims 1 to 7, characterized in that The front side of the housing is further provided with a sound pickup hole, the sound pickup hole communicates with the first front cavity, the earphone further includes a sound pickup microphone, the sound pickup microphone is provided within the housing and is arranged corresponding to the sound pickup hole, and the sound pickup microphone is used for picking up external environmental noise.

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