Earphone

Abstract

Disclosed in the present application is an earphone. The earphone comprises a wearing part and an earphone body connected to the wearing part. The earphone body comprises a casing and a loudspeaker unit, the casing being provided with an accommodation chamber, a first sound outlet hole and a second sound outlet hole. The loudspeaker unit is arranged in the accommodation chamber and divides the accommodation chamber into a front chamber and a rear chamber, the first sound outlet hole being communicated with one of the front chamber and the rear chamber, and the second sound outlet hole being communicated with the other of the front chamber and the rear chamber. The wearing state of the earphone comprises a first wearing state and a second wearing state; in the first wearing state, part of the casing can be inserted into an ear canal opening of a user, such that the first sound outlet hole is located in the ear canal opening; and in the second wearing state, the casing is not inserted into the ear canal opening of the user, such that the second sound outlet hole is spaced apart from the ear canal opening. The technical solution of the present application enables different wearing modes.

Description

Earphone

[0001] The present application claims priority to the Chinese patent application No. 202411240536.0, filed on September 4, 2024, entitled "Earphone", the contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

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

[0003] The earphone technology in the current market is mainly divided into two categories: in-ear earphones and open earphones. Each type has its unique design features and use scenarios.

[0004] In-ear earphones can be inserted into the ear canal of the user, providing a tighter seal and better sound isolation effect. However, in-ear earphones may cause discomfort to some users, and long-term wearing may cause ear fatigue. Open earphones, compared with in-ear earphones, provide a more relaxed wearing experience and do not go deep into the ear canal, so they are more comfortable for long-term wearing. However, open earphones are usually not as good as in-ear earphones in terms of bass performance and sound isolation, and may be disturbed by external noise in noisy environments.

[0005] In the related art, earphones can only provide one wearing state and cannot be flexibly switched according to the specific needs and use scenarios of users. SUMMARY

[0006] The present application provides an earphone that can have different wearing modes.

[0007] In a first aspect, the present application provides an earphone, which includes a wearing part and an earphone body connected with the wearing part, the earphone body including a shell and a speaker unit, the shell being provided with a receiving cavity, a first sound outlet and a second sound outlet; the speaker unit is arranged in the receiving cavity and divides the receiving cavity into a front cavity and a rear cavity, the first sound outlet is in communication with one of the front cavity and the rear cavity, and the second sound outlet is in communication with the other one of the front cavity and the rear cavity; wherein the wearing state of the earphone includes a first wearing state and a second wearing state, in the first wearing state, part of the shell can be inserted into the ear canal opening of the user, and the first sound outlet is located in the ear canal opening; in the second wearing state, the shell is not inserted into the ear canal opening of the user, and the second sound outlet is spaced from the ear canal opening.

[0008] Based on the above embodiment, in the technical scheme of the application, the earphone comprises an earphone body, the earphone body comprises a shell and a loudspeaker unit arranged in the shell, the loudspeaker unit divides the accommodating cavity into a front cavity and a rear cavity, and vibration of the loudspeaker unit can generate sound waves in the front cavity and the rear cavity respectively. The first sound outlet is used to sound into the ear canal opening of the user in the first wearing state, that is, the in-ear wearing state; and the second sound outlet is used to sound into the ear canal of the user in the second wearing state, that is, the open wearing state. The two wearing states share one loudspeaker unit and utilize the space of each other, and can form a complete acoustic structure system respectively. When the user wears the earphone, the first sound outlet is put into the ear canal opening, which is equivalent to using an in-ear earphone, and the second sound outlet is spaced from the ear canal opening, which is equivalent to using an open earphone. Therefore, the earphone has both in-ear and open wearing forms, the user can select the wearing mode according to different scenes, the user can quickly switch between the two wearing modes as needed, and the operation is simple without the need for additional accessories or adjustment.

[0009] The embodiment further comprises a wearing part, which helps to fix the earphone on the ear of the user and allows the earphone to provide good adaptability in the first wearing state and the second wearing state. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the drawings needed in the following embodiment or 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.

[0011] Fig. 1 is a structural schematic view of an embodiment of the earphone of the application;

[0012] Fig. 2 is a schematic view of an embodiment of the earphone of the application in a first wearing state;

[0013] Fig. 3 is a schematic view of an embodiment of the earphone of the application in a second wearing state;

[0014] Fig. 4 is a schematic view of a cross-sectional structure of another embodiment of the earphone of the application;

[0015] Fig. 5 is a schematic view of a cross-sectional structure of still another embodiment of the earphone of the application;

[0016] Fig. 6 is a schematic view of a cross-sectional structure of yet another embodiment of the earphone of the application;

[0017] Fig. 7 is a schematic view of an assembly of a cross-sectional structure of an embodiment of the loudspeaker unit of the application;

[0018] Fig. 8 is a schematic view of an assembly of a cross-sectional structure of another embodiment of the loudspeaker unit of the application;

[0019] Fig. 9 is a cross-sectional structural assembly diagram of another embodiment of the loudspeaker unit of the present application;

[0020] Fig. 10 is a cross-sectional structural assembly diagram of another embodiment of the loudspeaker unit of the present application;

[0021] Fig. 11 is a schematic diagram of the frequency response curve of an embodiment of the earphone of the present application;

[0022] Fig. 12 is a schematic diagram of the frequency response curve of another embodiment of the earphone of the present application.

[0023] BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 100, earphone;

[0025] 10, earphone body; 11, housing; 11a, accommodating cavity; 111a, front cavity; 1111a, main cavity; 1112a, sound outlet passage; 112a, rear cavity; 11b, first sound outlet hole; 11c, second sound outlet hole; 111, convex part; 112, housing body; 113, sound outlet nozzle; 12, loudspeaker unit; 121, yoke; 121a, sound outlet hole; 122, magnetic circuit system; 123, vibration system; 1231, diaphragm; 1232, voice coil; 13, ear cap; 13a, through hole; 14, detection element; 141, first feedback microphone; 142, second feedback microphone; 143, photoelectric sensor; 15, first sound resistance layer; 16, second sound resistance layer; 17, tuning damping;

[0026] 20, wearing part; 30, battery compartment.

[0027] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Embodiments of the present application

[0028] 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 with reference to the accompanying drawings.

[0029] The following description relates to 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 the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0030] In the description of the present application, it should be understood that the terms "first", "second" and the like are used only 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 the present application can be understood according to the specific circumstances. In addition, in the description of the present application, "a plurality of" means two or more, unless otherwise specified. The association relationship of the associated objects is described, which means that there can be three kinds of relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0031] 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 this application belongs. The terminology used in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more associated listed items.

[0032] Earphones are mainly divided into two categories: in-ear earphones and open earphones. Each type has its unique design features and use scenarios.

[0033] In-ear earphones can be inserted into the ear canal of the user, providing a tighter seal and better sound isolation. In-ear earphones can usually provide richer bass effects and clearer audio details, as they reduce the interference of external noise. However, in-ear earphones may cause discomfort to some users, and long-term wear may cause ear fatigue or discomfort.

[0034] Open earphones, compared to in-ear earphones, provide a more relaxed wearing experience and do not go deep into the ear canal, so they are more comfortable for long-term wear. Open earphones allow external sounds to enter, which is advantageous in some situations, such as outdoor sports, where it is necessary to maintain awareness of the surrounding environment. However, open earphones are generally not as good as in-ear earphones in terms of bass performance and sound isolation, and may be disturbed by external noise in noisy environments.

[0035] In the related art, earphones can only provide one wearing state, and cannot be flexibly switched according to the specific needs of users and use scenarios.

[0036] In order to allow users to choose the appropriate wearing state according to personal preferences and use environment, an earphone is proposed in the embodiments of the present application.

[0037] Please refer to Fig. 1, the earphone 100 comprises a wearing part 20 and an earphone body 10, the wearing part 20 is connected with the earphone body 10, and the wearing part 20 is used for enabling the earphone body 10 to be located at the concha cavity of a user more stably. The wearing part 20 can be an ear clip or an ear hook, that is, the earphone 100 can be an ear clip type earphone 100 or an ear hook type earphone 100. When the wearing part 20 is an ear clip, the wearing part 20 is attached to the outer edge of the pinna of the user in a clamping manner; when the wearing part 20 is an ear hook, the wearing part 20 bypasses the upper part of the pinna in a hanging manner and is fixed at the back of the ear to form a hanging support point. It can be understood that, whether the wearing part 20 is an ear clip or an ear hook, the wearing part 20 is designed to have a certain elasticity and adjustability to adapt to ears of different shapes and sizes, so as to fix the earphone body 10 on the ear of the user and ensure that the user can obtain good adaptability and stability. Exemplarily, the wearing part 20 comprises a connecting body and a memory metal piece arranged in the connecting body, the connecting body is arranged in an open arc shape and is connected with the earphone body 10, and the memory metal piece can be a titanium wire, so that the position and angle of the earphone body 10 relative to the wearing part 20 can be changed. The titanium wire has high strength and durability and can withstand bending in daily use without being easily broken.

[0038] Please refer to Fig. 4, the earphone body 10 in the embodiment of the present application comprises a shell 11 and a loudspeaker unit 12, the shell 11 has a containing cavity 11a, and the loudspeaker unit 12 is arranged in the containing cavity 11a. The shell 11 can provide protection for the loudspeaker unit 12 arranged in the containing cavity 11a, so as to prevent external dust and moisture from damaging the loudspeaker unit 12. The material of the shell 11 can be plastic, metal, silica gel or the like. The loudspeaker unit can vibrate to generate sound through an inner diaphragm 1231, and is a basic component for the earphone 100 to generate sound. The loudspeaker unit 12 further divides the containing cavity 11a into a front cavity 111a and a rear cavity 112a, so as to optimize the propagation path of sound waves, reduce sound distortion and improve sound quality.

[0039] Exemplarily, as shown in Figs. 7 to 10, the cross section of the loudspeaker unit 12 can be any one of a circular shape, an elliptical shape, a racetrack shape, a square shape, a triangular shape, a semicircular shape or a crescent shape. Different loudspeaker units 12 can better adapt to the spatial layout of the shell 11, improve the space utilization rate of the containing cavity 11a and make the design of the earphone 100 more compact.

[0040] Exemplarily, the loudspeaker unit 12 comprises, but is not limited to, a moving coil loudspeaker, a moving iron loudspeaker, a Micro-Electro-Mechanical System (Mems) loudspeaker, a vibrator, a planar loudspeaker or the like electro-acoustic conversion device.

[0041] With reference to FIG. 4, in the embodiment, the speaker unit 12 can include a basket 121, a magnetic circuit system 122 and a vibration system 123. The basket 121 has a receiving cavity and an opening communicating with the receiving cavity. The magnetic circuit system 122 is arranged in the receiving cavity and connected with the basket 121.

[0042] The vibration system 123 includes a diaphragm 1231 and a voice coil 1232. The diaphragm 1231 covers the opening and is connected with the basket 121. The diaphragm 1231 drives air vibration, so that the air can conduct sound through the sound outlet. The voice coil 1232 is arranged in the receiving cavity 11a and spaced apart from the magnetic circuit system 122. The voice coil 1232 is connected with the diaphragm 1231. The basket 121 further has a sound hole 121a. The tuning damper 17 covers the sound hole 121a. The tuning damper 17 is used to reduce the excessive peak value in the vibration system 123, so as to obtain an ideal frequency response curve.

[0043] In an embodiment, the earphone 100 further includes a battery compartment 30. The two ends of the wearing part 20 are connected with the earphone body 10 and the battery compartment 30 respectively. The wearing part 20 is provided with a wire. The battery compartment 30 is provided with a connected battery and a circuit board. The battery is connected with the speaker unit 12 through the wire and provides power for the speaker unit 12. The circuit board is used to control the vibration of the speaker unit 12. The battery has an independent receiving space, so that the battery can be designed larger, and the corresponding endurance of the earphone 100 is stronger. The specific form of the battery is not limited. For example, a lithium battery which can be repeatedly charged and discharged can be used, so that the earphone 100 is convenient to use and carry.

[0044] Optionally, the wearing part 20, the earphone body 10 and the battery compartment 30 can be three parts which are detachably connected. Alternatively, they can be an integral whole and are processed together, for example, by injection molding.

[0045] The shell 11 also has a first sound outlet 11b and a second sound outlet 11c, the first sound outlet 11b is in communication with one of the front cavity 111a and the rear cavity 112a, and the second sound outlet 11c is in communication with the other one of the front cavity 111a and the rear cavity 112a, wherein the wearing state of the earphone 100 includes a first wearing state and a second wearing state, in the first wearing state (as shown in FIG. 2), that is, the in-ear wearing state, part of the shell 11 can be inserted into the ear canal of the user, and the first sound outlet 11b is located in the ear canal to sound to the ear canal of the user; in the second wearing state (as shown in FIG. 3), that is, the open wearing state, the shell 11 is not inserted into the ear canal of the user, and the second sound outlet 11c is spaced from the ear canal, and sound is emitted to the ear canal of the user through the second sound outlet 11c. As shown in FIG. 4, the first sound outlet 11b is in communication with the rear cavity 112a, and the second sound outlet 11c is in communication with the front cavity 111a, at this time, the front face (that is, the front face) of the loudspeaker unit 12 sounds to the front cavity 111a in the second wearing state (that is, the open type), and the back face (that is, the back face) of the loudspeaker unit 12 sounds to the rear cavity 112a in the first wearing state (that is, the in-ear type). As shown in FIG. 5, the first sound outlet 11b is in communication with the front cavity 111a, and the second sound outlet 11c is in communication with the rear cavity 112a, at this time, the front face (that is, the front face) of the loudspeaker unit 12 sounds to the front cavity 111a in the first wearing state (that is, the in-ear type), and the back face (that is, the back face) of the loudspeaker unit 12 sounds to the rear cavity 112a in the second wearing state (that is, the open type). Both wearing states share one loudspeaker unit 12, utilize space, and each can form a complete acoustic structure system.

[0046] The shapes of the first sound outlet 11b and the second sound outlet 11c can be circular, square, or strip-shaped, and the like, and the embodiments of the present application do not limit this.

[0047] Due to the compression and expansion of air on both sides when the loudspeaker unit 12 vibrates, the sound phases of the front cavity 111a and the rear cavity 112a are opposite. This design allows the earphone 100 to provide an optimized listening experience in different wearing states. When the user wears it, the first sound outlet 11b is placed in the ear canal, which is equivalent to using an in-ear earphone 100, and the second sound outlet 11c is placed close to the ear canal, which is equivalent to using an open earphone 100. The earphone 100 has both in-ear and open wearing forms, and the user can choose the wearing method according to different scenes, for example, using in-ear wearing in a noise reduction environment, and using open wearing in a situation requiring environmental sound perception. The user can quickly switch between the two wearing modes as needed, which is simple to operate and does not require additional accessories or adjustments.

[0048] In an embodiment, the first sound resistance layer 15 is arranged on the inner side and the outer side of the first sound hole 11b, and covers the first sound hole 11b. The first sound resistance layer 15 can affect the resonance characteristics of the sound. As shown in FIG. 11, the line indicated by a represents “no first sound resistance layer arranged on the sound outlet”, the line indicated by b represents “one layer of first sound resistance layer arranged on the front end of the sound outlet”, the line indicated by c represents “one layer of first sound resistance layer arranged on both ends of the sound outlet”, and the line indicated by d represents “two layers of first sound resistance layer arranged on the front end of the sound outlet”. Compared with no first sound resistance layer 15, the first sound resistance layer 15 can reduce the resonance peak near the fundamental frequency and the effect of the high-frequency (3 kHz-10 kHz) resonance peak, and reduce these high-frequency resonance peaks to avoid excessively sharp or harsh high frequencies. At the same time, the low-frequency performance (20 Hz-200 Hz) is not lost, and the low frequencies are still full and rich. Specifically, the first sound resistance layer 15 can be arranged with at least one layer, and each additional layer can affect the transmission and frequency response of the sound. The number of layers can be set according to actual needs.

[0049] Understandably, the second sound resistance layer 16 is arranged on the inner side and the outer side of the second sound hole 11c, and covers the second sound hole 11c. The second sound resistance layer 16 can be arranged with at least one layer, which will not be described here.

[0050] The first sound resistance layer 15 and the second sound resistance layer 16 are one of synthetic fiber, glass fiber, mineral wool, tuning mesh cloth or tuning paper. These materials can adjust the propagation characteristics of the sound according to their density, thickness and structure, and optimize the frequency response.

[0051] In an embodiment, the shell 11 has a first direction AA. Whether the shell 11 has a regular shape or an irregular shape, the shell 11 has the first direction AA. This feature is not affected by the specific shape of the shell 11. For example, when the shell 11 is a cuboid shell, the first direction AA can be the length direction of the cuboid shell. The first sound hole 11b is located at one end of the shell 11 in the first direction AA. The end of the shell 11 in the first direction AA can be tapered, and the outer diameter gradually decreases in the direction towards the user, which helps to place the first sound hole 11b into the ear canal opening and achieve directional propagation of sound in the first wearing state. The shell 11 also has an inner side surface in the thickness direction towards the user's ear in the wearing state. The second sound hole 11c is located on the inner side surface. The thickness direction is perpendicular to the first direction AA, so that in the second wearing state, the second sound hole 11c is close to the user's ear canal opening. The respective layouts of the first sound hole 11b and the second sound hole 11c enable the earphone 100 to adapt to different wearing modes, such as in-ear and open, and provide different listening experiences.

[0052] In an embodiment, the shell 11 comprises a shell body 112 and an acoustic outlet 113 arranged on the shell body 112, the acoustic outlet 113 is provided with an acoustic passage 1112a and a first acoustic hole 11b, the acoustic passage 1112a can be in communication with the front cavity 111a and the first acoustic hole, or the acoustic passage 1112a can be in communication with the rear cavity 112a and the first acoustic hole, the acoustic outlet 113 is tubular, the cross-sectional size of the acoustic outlet 113 is smaller than that of the shell body 112, so that the first acoustic hole 11b can be placed into the ear canal opening to directly transmit sound into the ear canal, thereby improving the transmission efficiency of sound. That is, in the first wearing state, at least part of the acoustic outlet 113 can be inserted into the ear canal opening of the user to emit sound to the user's ear canal through the first acoustic hole 11b. Since the sound is directly transmitted to the ear canal, the loss and distortion of the sound during transmission can be reduced, and clearer and purer sound quality can be provided.

[0053] In the second wearing state, the shell body 112 is provided with a second acoustic hole 11c, and the side of the shell body 112 provided with the second acoustic hole 11c is close to the ear canal opening. The sound emitted by the second acoustic hole 11c is received by the eardrum. At this time, the acoustic outlet 113 is not inserted into the ear canal opening in the second wearing state, but is isolated by the structure of the external ear, so it does not directly transmit sound into the ear canal.

[0054] The central axis of the acoustic passage 1112a is perpendicular to the central axis of the loudspeaker unit 12, and a smaller included angle helps to improve the acoustic coupling efficiency between the loudspeaker unit 12 and the acoustic outlet 113, so that the sound can be more effectively transmitted from the loudspeaker unit 12 to the acoustic outlet 113, and then to the ear canal opening of the user. The perpendicular layout helps to reduce the direct impact of the loudspeaker unit 12 vibration on the first acoustic hole 11b, reduce resonance, and improve the clarity of sound quality.

[0055] In order to achieve the airtightness of the acoustic outlet 113 and the ear canal opening in the first wearing state, the earphone body 10 further comprises an ear cap 13, which can be a flexible ear cap. The ear cap 13 is sleeved on the outside of the acoustic outlet 113. In the case of pressure, for example, when the acoustic outlet 113 of the embodiment is inserted into the ear canal opening, the flexible ear cap 13 can be extruded and deformed or stretched relative to the acoustic outlet 113, thereby completing the sealing with the external ear canal opening, adapting to the ear canal openings of different users, and providing personalized adaptation. Because its rebound force is small, it is suitable for long-term wearing of users and reduces the discomfort of the ear. In the first wearing state, the ear cap 13 is inserted into the ear canal opening of the user and contacts the skin of the user located in the ear canal opening to achieve sealing, effectively isolating external noise and providing better sound insulation effect.

[0056] Further, one end of the ear cap 13 abuts against the shell body 112, and the close fit of the ear cap 13 and the shell body 112 can enhance the structural stability of the earphone body 10, and the outer wall surface of the ear cap 13 is flush with the outer wall surface of the shell body 112, which helps to achieve the neatness and consistency of the appearance of the earphone 100 and provide a more beautiful visual experience. The end of the ear cap 13 away from the accommodating cavity 11a has an opening, which is surrounded by the first sound outlet hole 11b, which helps to directly and effectively transmit sound to the ear canal and improve the clarity and sound quality of the sound.

[0057] In an embodiment, the shell 11 is provided with at least two second sound outlet holes 11c arranged at intervals, and the center axes of the at least two second sound outlet holes 11c can be intersected. By dispersing the propagation of sound waves, it can reduce the sound distortion that may be caused by a single second sound outlet hole 11c, especially at a higher volume, and provide a more true and natural listening experience.

[0058] For consumers with larger ears, in the wearing state, it is inevitable that the second sound outlet hole 11c moves in the direction of the top of the head relative to the external auditory canal, and part of the second sound outlet hole 11c may be blocked by the ear, resulting in smaller sound heard by the user and affecting the user experience. In the embodiment of the present application, the at least two second sound outlet holes 11c have at least two different orientations. In this way, when one of the second sound outlet holes 11c is blocked by the user's ear, at least one of the second sound outlet holes 11c has an orientation different from that of the blocked second sound outlet hole 11c and is not blocked by the user's ear, so that sound waves can be transmitted from the unblocked second sound outlet hole 11c to the user's external auditory canal, ensuring the user's listening effect, improving the robustness of the earphone 100, and making the earphone 100 have good compatibility, so that different consumers can obtain as consistent sound size as possible.

[0059] Specifically, as shown in FIG. 6, the inner side of the shell 11 is arched to form a convex portion 111 in a direction away from the loudspeaker unit 12, and at least two second sound holes 11c are arranged on the convex portion 111, i.e., at least one second sound hole 11c is arranged on the front end face of the convex portion 111, and at least one other second sound hole 11c is arranged on the side face of the convex portion 111. Understandably, the convexly arranged convex portion 111 can make the sound outlet closer to the user's external auditory canal, improve the sound pressure level of the sound, and facilitate the user to listen to the sound. As shown in FIG. 6, the convex portion 111 can be convexly arranged in a circular truncated cone shape, the second sound hole 11c on the top face of the convex portion 111 has a central axis S1, and the second sound hole 11c on the side face of the convex portion 111 has a central axis S2. In the embodiment shown in FIG. 6, the central axis S1 and the central axis S2 form an angle a of 90 degrees, i.e., the directions of the two second sound holes 11c are arranged at an angle of 90 degrees. In this way, when the second sound hole 11c on the top face of the convex portion 111 is blocked, the second sound hole 11c on the side face of the convex portion 111 can be maximally ensured not to be blocked, and the user can clearly hear the sound.

[0060] In another embodiment, at least one second sound hole 11c is arranged on the front end face of the convex portion 111, and at least one other second sound hole 11c is arranged on the shell 11 surrounding the convex portion 111. The second sound hole 11c on the convex portion 111 is closer to the ear canal opening, which helps to enhance the perception of low frequency, and the second sound hole 11c on the shell 11 surrounding the convex portion 111 helps to diffuse the low frequency. The second sound holes 11c at different positions help to distribute the sound in the direction close to the ear canal opening, avoiding excessive concentration of specific frequencies, thereby improving the balance of sound quality.

[0061] Of course, the convex portion 111 can also be prismatic or cylindrical, and the angle a between the two second sound holes 11c is not limited. In addition, the number of second sound holes 11c in the embodiments of the present application is not limited, and the inner side can also be provided with three or more second sound holes 11c. Taking three second sound holes 11c as an example, one of the second sound holes 11c can be located on the top face of the convex portion 111, and the other two second sound holes 11c can be located on the side face of the convex portion 111. The axes of the two second sound holes 11c on the side face of the convex portion 111 can be parallel or at an angle, which will not be described here.

[0062] As shown in FIG. 12, the line represented by e represents "2 second sound holes-1V-0mm", the line represented by f represents "2 second sound holes-1V-3mm", the line represented by g represents "1 second sound hole-1V-3mm", the line represented by h represents "2 second sound holes-1V-6mm", the line represented by i represents "1 second sound hole-1V-6mm", the line represented by j represents "2 second sound holes-1V-9mm", the line represented by k represents "2 second sound holes-1V-12mm", the line represented by l represents "1 second sound hole-1V-9mm", and the line represented by m represents "1 second sound hole-1V-12mm". The sound gain (Decibel, dB) is obtained by comparing the sound volume of the earphone 100 with a single second sound hole 11c or multiple second sound holes 11c and parallel central axes (working condition one) and the sound volume of the earphone 100 with at least two second sound holes 11c and the central axes of the at least two second sound holes 11c at an angle (working condition two) when the earphone 100 is worn on an ear from small to large. The greater the sound gain, the greater the sound that can be heard by the user in working condition two compared with working condition one. The sound data of the earphone 100 from the starting position where the at least two second sound holes 11c are not blocked at all to the positions where the at least two second sound holes 11c are moved upward by 3mm, 6mm, 9mm and 12mm are as follows:

[0063] Sound gain (dB) 3mm 1.75 6mm 3.39mm 5 12mm 5

[0064] Obviously, when the second sound hole 11c is blocked, working condition two can indeed make the user hear more sound, and the greater the blocking of the second sound hole 11c, the greater the sound gain of working condition two compared with working condition one. Therefore, the implementation of the present application can reduce the sound loss caused by the partial blocking of the second sound hole 11c due to the misalignment of the earphone 100 and improve the robustness.

[0065] In an embodiment, the earphone 100 further comprises a detection element 14 for detecting the wearing state of the earphone 100. The detection element 14 can intelligently identify whether the earphone 100 is in a first wearing state (i.e., in-ear) or a second wearing state (i.e., open), and adjust the working mode of the earphone 100, such as the volume, equalizer settings, etc., to adapt to the current wearing state.

[0066] Exemplarily, the front cavity 111a includes a main cavity 1111a and an acoustic outlet channel 1112a, the main cavity 1111a is opposite to the rear cavity 112a, and the acoustic outlet channel 1112a is formed with a first acoustic outlet hole 11b at an end thereof. The detection element 14 includes a first feedback microphone 141 arranged in the main cavity 1111a, which can be used to monitor the sound signal output by the speaker unit 12. For example, when the earphone 100 is in the in-ear wearing state, the ear cap 13 or the soft sealing element forms a good seal with the ear canal, which changes the propagation characteristics of the sound, especially the low-frequency sound, because the sealed environment increases the resonance of the sound. Therefore, compared with the open wearing, the sound in the ear canal will be larger at the same volume, that is, when the first feedback microphone 141 detects that the sound signal is too large, it is judged that the current is the first wearing state (i.e., in-ear); on the contrary, when the first feedback microphone 141 detects that the sound signal is too small, it is judged that the current is the second wearing state (i.e., open).

[0067] Further, the first feedback microphone 141 can also capture the sound transmitted from the external environment. Understandably, when the earphone 100 is in the second wearing state (i.e., open), the external sound will be more strongly transmitted to the first feedback microphone 141, that is, the detected environmental sound is significantly increased, on the contrary, when the earphone 100 is in the first wearing state (i.e., in-ear), the external sound will be weaker than the mode when the earphone 100 is in the second wearing state.

[0068] Therefore, the first feedback microphone 141 can simultaneously capture the sound emitted by the speaker unit 12 and the sound of the external environment, separate the two sounds through the algorithm of the digital signal processor (Digital Signal Processor, DSP) or the microcontroller unit (Microcontroller Unit, MCU), and calculate the intensity and frequency of the sound emitted by the speaker unit 12 and the sound of the external environment, respectively. Based on the above calculation structure, the wearing state of the earphone 100 is comprehensively judged.

[0069] In another embodiment, the detection element 14 further includes a second feedback microphone 142 arranged in the acoustic outlet channel 1112a, which has the same function as the first feedback microphone 141 and can also obtain the sound emitted by the speaker unit 12 and the sound of the external environment. In actual application, the first feedback microphone 141 and / or the second feedback microphone 142 can be appropriately configured according to the internal space of the earphone 100. For example, when the first feedback microphone 141 and the second feedback microphone 142 are arranged at the same time, the earphone 100 can perform data calibration through the configuration of the two feedback microphones, improve the accuracy of sound detection, and thus more accurately judge the wearing state of the earphone.

[0070] In another arrangement, the detection element 14 comprises a photoelectric sensor 143 (as shown in FIG. 4), which is generally composed of three parts: a light source, a light-sensitive element, and a signal processor. The light source is responsible for emitting light, the light-sensitive element is responsible for receiving the emitted light and converting it into an electrical signal, and the signal processor is responsible for analyzing the electrical signal. When an object blocks or reflects light, the amount of light reaching the light-receiving portion changes, thereby outputting a corresponding electrical signal. The ear cap 13 is provided with a through hole 13a, and the photoelectric sensor 143 is arranged on the ear cap 13 opposite the through hole 13a. The photoelectric sensor 143 can emit detection light outward through the through hole 13a. When the earphone 100 is in the first wearing state (i.e., in-ear), the light emitted by the light source will shine on the skin in the ear canal opening, and the skin will emit light emitted by the light source so that the light-sensitive element will detect a certain amount of emitted light. The signal processor will detect that the amount of emitted light is within a predetermined threshold range. When the earphone 100 is in the second wearing state (i.e., open), the light emitted by the light source no longer shines on the user's skin, so the amount of emitted light received by the light-sensitive element is significantly reduced. The signal processor detects this change and can determine that the earphone 100 is in an open wearing state.

[0071] In the present embodiment, taking the example that the first sound outlet hole 11b communicates with the rear cavity 112a, and the second sound outlet hole 11c communicates with the front cavity 111a, in the first wearing state, the sound emitted by the loudspeaker unit 12 is communicated with the outside through the second sound outlet hole 11c of the front cavity 111a. The second sound outlet hole 11c allows a certain amount of sound to be transmitted from the front cavity 111a. Since the second sound outlet hole 11c is directly opposite the user's concha cavity, the sound transmitted through the second sound outlet hole 11c is not released directionally to the outside, but directly propagates towards the concha cavity. If these leaked sounds match the waveforms of some sounds in the outside world, they can cancel each other out at the concha cavity, thereby reducing the interference of these sounds on the user's hearing and improving the purity of the listening experience. To a certain extent, it can reduce the interference of external sounds and improve the active noise cancellation (ANC) effect of the earphone 100.

[0072] In the second wearing state, the sound outlet 113 serves as a leakage channel for the anti-phase sound emitted by the loudspeaker unit 12, meaning that it allows some sound to leak out from the transducer body in the opposite direction (i.e., not towards the ear canal). Since the sound outlet 113 is not directed towards the external ear canal opening, these leaked sounds will not affect the tympanic membrane receiving the sound transmitted through the second sound outlet hole 11c. The purpose is to utilize the anti-phase sound waves to interact with environmental noise or other sound waveforms to produce destructive interference, thereby reducing the interference of external noise to a certain extent.

[0073] The control method of the earphone 100 described in this embodiment is based on the earphone 100 described in the above embodiments. Moreover, the control method of the earphone 100 described in this embodiment is not limited to the following steps.

[0074] S100: Obtain the detection parameter collected by the detection element 14.

[0075] In this embodiment, the detection element 14 is used to automatically detect the current wearing state of the earphone 100 as in-ear or open.

[0076] S200: Control the speaker unit 12 to operate in a first mode when the detection parameter represents that the earphone 100 is in a first wearing state, and control the speaker unit 12 to operate in a second mode when the detection parameter represents that the earphone 100 is in a second wearing state. The operating power of the speaker unit 12 in the first mode is less than the operating power of the speaker unit 12 in the second mode.

[0077] In this embodiment, the first wearing state is an in-ear wearing state, the second wearing state is an open wearing state, the first mode is a TWS earphone mode, that is, it has the advantages of TWS, can realize wireless connection, stereo separation, low delay, and provide better wireless audio experience. The second mode is an open earphone 100 mode, which can simulate a natural sound field, making the sound sound more open and natural, rather than reverberating in a closed space.

[0078] Because the earphone 100 has good sealing with the ear canal in the first wearing state, it can provide the required sound quality and sound intensity at a lower volume, so the operating power of the speaker unit 12 of the earphone 100 in the first wearing state is less than that in the second wearing state. For example, the operating power of the speaker unit 12 in the first mode is 20 milliwatts, and the operating power of the speaker unit 12 in the second mode is 60 milliwatts.

[0079] In this embodiment, the detection element 14 can collect the detection parameter and represent the wearing state of the earphone 100 according to the detection parameter, and then control the operating mode of the speaker unit 12, providing the user with an intelligent experience and meeting the user's individual listening needs in different wearing states. The control method of the earphone 100 of this embodiment can adapt to different environmental noise levels, improve sound quality and noise reduction effect. Reduce the need for users to manually switch modes, simplify the operation process, and provide a more convenient user experience. When switched to the first mode, the operating power of the speaker unit 12 is low, which helps to save power and prolong the battery life.

[0080] Specifically, the detection element 14 comprises a photoelectric sensor 143, which is located inside the through hole 13a of the ear cap 13, and the detection parameter is an optical parameter. When the detection parameter represents that the earphone 100 is in the first wearing state, the specific manner is: if the optical parameter is less than a first preset threshold, it is determined that the current wearing state of the earphone 100 is the first wearing state. When the detection parameter represents that the earphone 100 is in the second wearing state, the specific manner is: if the optical parameter is greater than or equal to the first preset threshold, it is determined that the current wearing state of the earphone 100 is the second wearing state.

[0081] In the embodiment, the photoelectric sensor 143 can accurately detect whether the ear cap 13 is inserted into the ear canal opening, and the photoelectric sensor 143 can sense the change of the optical characteristic caused by the human skin, so as to realize instant mode switching. The first preset threshold can be determined by averaging the optical parameters in the in-ear wearing state for multiple times.

[0082] Further, the photoelectric sensor 143 can be a photoelectric emission sensor, which comprises a light source (such as an infrared LED) and a light detector. The photoelectric emission sensor actively emits light (usually invisible infrared light), and then captures the reflected light through the light detector. In actual application, when the ear cap 13 is inserted into the ear canal opening of the user, the emitted infrared light is absorbed or reflected by the skin, and part of the light returns to the light detector of the sensor.

[0083] Specifically, the detection element 14 further comprises a microphone, when the first sound outlet hole 11b is configured to communicate with the rear cavity 112a, and the second sound outlet hole 11c is configured to communicate with the front cavity 111a, the microphone is located in the rear cavity 112a, and the detection parameter is a sound parameter. When the detection parameter represents that the earphone 100 is in the first wearing state, the specific manner is: if the sound parameter is greater than or equal to a second preset threshold, it is determined that the current wearing state of the earphone 100 is the first wearing state. When the detection parameter represents that the earphone 100 is in the second wearing state, the specific manner is: if the sound parameter is less than the second preset threshold, it is determined that the current wearing state of the earphone 100 is the second wearing state.

[0084] Further, the microphone can include a first feedback microphone 141 and a second feedback microphone 142, the first feedback microphone 141 can be arranged in the main cavity 1111a, and the second feedback microphone 142 can be arranged in the sound outlet channel 1112a. Both the second feedback microphone 142 and the first feedback microphone 141 can collect audio, the second feedback microphone 142 collects a feed-forward audio signal, and the audio collected by the second feedback microphone 142 is mainly the friction sound of the earphone 100 when it is inserted into the ear canal; when the wearing mode of the earphone 100 is open, the audio collected by the second feedback microphone 142 is mainly the external environmental sound. The first feedback microphone 141 is usually arranged in the main cavity 1111a and is closer to the loudspeaker unit 12, so as to capture the sound transmitted by the loudspeaker unit 12 and possible internal noise.

[0085] The second feedback microphone 142 collects a feed-forward audio signal, and the first feedback microphone 141 collects a feedback audio signal. The sound pressure levels of the feed-forward audio signal and the feedback audio signal are analyzed to determine a first sound pressure level of the feed-forward audio signal and a second sound pressure level of the feedback audio signal. The sound pressure level difference between the first sound pressure level and the second sound pressure level is determined. If the sound pressure level difference is not lower than a maximum sound pressure level difference threshold, it is determined that the wearing state of the earphone 100 is an in-ear state, otherwise, it is determined that the wearing state of the earphone 100 is an open state.

[0086] The control method of the earphone 100 provided in the embodiment can improve the accuracy of the detection of the wearing state of the earphone 100 by obtaining the detection parameters through the photoelectric sensor 143, the second feedback microphone 142 and the first feedback microphone 141.

[0087] In the drawings of the 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 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 on the present application, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0088] 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. A headphone, wherein, The earphone comprises: a wearing part; and an earphone body connected with the wearing part, the earphone body comprising a shell and a speaker unit, the shell being provided with a receiving cavity, a first sound outlet and a second sound outlet; the speaker unit being arranged in the receiving cavity and separating the receiving cavity into a front cavity and a rear cavity, the first sound outlet being communicated with one of the front cavity and the rear cavity, and the second sound outlet being communicated with the other one of the front cavity and the rear cavity; wherein the wearing state of the earphone comprises a first wearing state and a second wearing state, in the first wearing state, part of the shell is inserted into the ear canal of the user, and the first sound outlet is located in the ear canal; in the second wearing state, the shell is not inserted into the ear canal of the user, and the second sound outlet is spaced from the ear canal.

2. The earphone of claim 1, wherein, The shell has a first direction, the first sound outlet is located at one end of the shell in the first direction, and the inner side surface of the shell faces the ear of the user in the wearing state, and the second sound outlet is located on the inner side surface.

3. The earphone of claim 2, wherein, wherein the shell is provided with at least two second sound outlets arranged at intervals, and the at least two second sound outlets have at least two different orientations.

4. The earphone of claim 3, wherein, The inner side surface of the shell is arched to form a convex portion in a direction away from the speaker unit, and at least two second sound outlets are arranged on the convex portion.

5. The earphone of claim 4, wherein, At least one second sound outlet is arranged on the front surface of the convex portion, and at least one second sound outlet is arranged on the side surface of the convex portion.

6. The earphone of claim 4, wherein, The convex portion is in the shape of a circular truncated cone, the second sound outlet located on the top surface of the convex portion has a central axis S1, the second sound outlet located on the side surface of the convex portion has a central axis S2, and the included angle between the S1 and the S2 is 90 degrees.

7. The earphone of claim 3, wherein, The inner side surface of the shell is arched to form a convex portion in a direction away from the speaker unit, at least one second sound outlet is arranged on the convex portion, and at least one second sound outlet is arranged on the shell surrounding the convex portion.

8. The earphone of claim 2, wherein, The shell comprises a shell body and a sound outlet nozzle arranged on the shell body, the sound outlet nozzle is provided with a sound outlet channel and the first sound outlet, the sound outlet channel is communicated with the rear cavity and the first sound outlet, and the shell body is provided with the second sound outlet; in the first wearing state, at least part of the sound outlet nozzle can be inserted into the ear canal of the user to sound to the ear canal of the user through the first sound outlet.

9. The earphone of claim 2, wherein the shell comprises a shell body and a sound outlet nozzle arranged on the shell body, the sound outlet nozzle is provided with a sound outlet channel and the first sound outlet, the sound outlet channel is communicated with the front cavity and the first sound outlet, and the shell body is provided with the second sound outlet; in the first wearing state, at least part of the sound outlet nozzle can be inserted into the ear canal of the user to sound to the ear canal of the user through the first sound outlet.

10. The earphone of claim 8, wherein, The central axis of the sound outlet channel is perpendicular to the central axis of the speaker unit.

11. The earphone of claim 8, wherein, The earphone body further comprises an ear cap, the ear cap is sleeved outside the sound outlet nozzle, and in the first wearing state, the ear cap is inserted into the ear canal of the user.

12. The earphone of claim 11, wherein, The ear cap is in abutment with the shell body at one end of the shell body, and an outer wall surface of the ear cap is flush with an outer wall surface of the shell body.

13. The earphone of claim 11, wherein, Further comprising a detection element configured to detect a wearing state of the earphone.

14. The earphone of claim 13, wherein, The front cavity comprises a main cavity and the sound outlet channel in communication, and the main cavity is arranged opposite to the rear cavity; The detection element comprises a first feedback microphone arranged in the main cavity.

15. The earphone of claim 13, wherein, The front cavity comprises a main cavity and the sound outlet channel in communication, and the main cavity is arranged opposite to the rear cavity; The detection element comprises a second feedback microphone arranged in the sound outlet channel.

16. The earphone of claim 13, wherein, The front cavity comprises a main cavity and the sound outlet channel in communication, and the main cavity is arranged opposite to the rear cavity; The detection element comprises a first feedback microphone and a second feedback microphone arranged in the sound outlet channel.

17. The earphone of claim 13, wherein, The detection element comprises a photoelectric sensor, and the ear cap is provided with a through hole, and the photoelectric sensor is arranged on the ear cap and opposite to the through hole.

18. The earphone of claim 1, wherein, The earphone further comprises a battery compartment, and two ends of the wearing part are connected with the earphone body and the battery compartment respectively.

19. The earphone of claim 1, wherein, The inner side and the outer side of the first sound outlet hole are provided with a first sound resistance layer, and the first sound resistance layer covers the first sound outlet hole.

20. The earphone of claim 1, wherein, The inner side and the outer side of the second sound outlet hole are provided with a second sound resistance layer, and the second sound resistance layer covers the second sound outlet hole.

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