Earphone

Abstract

The earphone comprises an ear hook and a sound production part which are connected with each other, the ear hook is hung between the auricle and the head of a user, the sound production part is located on the front side of the auricle, the sound production part comprises a movement shell and a microphone, the ear hook is connected with the movement shell, and the microphone is arranged in the movement shell. The movement shell is provided with a connecting end connected with the ear hook and a free end far away from the connecting end, the connecting end is closer to the mouth of a user than the free end in a wearing state, a sound receiving hole located between the free end and the connecting end is formed in the movement shell, and the microphone collects sound outside the earphone through the sound receiving hole. The sound outlet end of the sound receiving hole is closer to the connecting end than the sound inlet end of the sound receiving hole. Through the above mode, the wind noise resistance of the earphone can be improved, and the pickup effect of the microphone can be effectively improved.

Description

Earphone

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, in particular to an earphone.

BACKGROUND

[0002] With the continuous popularity of electronic devices, electronic devices have become an indispensable social and entertainment tool in people's daily life, and people's requirements for electronic devices are also getting higher and higher. Earphones, smart glasses and other such electronic devices have been widely used in people's daily life, and they can be used in conjunction with terminal devices such as mobile phones and computers to provide users with an auditory feast.

[0003] However, the pickup effect of the microphone structure in the traditional earphone is poor, in addition, as the application scenarios of earphones become more complex, the requirement for the wind resistance and noise reduction capability of earphones is also getting higher and higher, so that the pickup effect of the current earphone cannot meet the user's use demand.

[0004]

SUMMARY

[0005] To solve the above technical problems, one technical solution adopted by the present application is to provide an earphone, which comprises an ear hook and a sound generating part connected with each other, the ear hook is hung between the pinna and the head of a user, the sound generating part is located on the front side of the pinna, the sound generating part comprises a movement core shell and a microphone, the ear hook is connected with the movement core shell, the microphone is arranged inside the movement core shell, the movement core shell has a connection end connected with the ear hook and a free end away from the connection end, in the wearing state, the connection end is closer to the mouth of the user than the free end, the movement core shell is provided with a sound collecting hole located between the free end and the connection end, the microphone collects the sound outside the earphone through the sound collecting hole, and the sound outlet end of the sound collecting hole is arranged closer to the connection end than the sound inlet end of the sound collecting hole.

[0006] In some embodiments, the movement core shell has a length direction and a thickness direction perpendicular to each other, the length direction is the interval direction of the connection end and the free end, and the thickness direction is the direction towards or away from the pinna in the wearing state, at least part of the hole section of the sound collecting hole is arranged obliquely relative to the length direction and the thickness direction.

[0007] In some embodiments, the movement core shell comprises a first side wall and a second side wall arranged at intervals along the thickness direction, the second side wall is closer to the pinna than the first side wall in the wearing state, the sound collecting hole is arranged on the first side wall, and the extension direction of at least part of the hole section of the sound collecting hole has an inclination angle relative to the thickness direction greater than 0° and less than or equal to 40°.

[0008] In some embodiments, the number of sound collecting holes corresponds to the number of microphones, the cross-sectional area of the sound collecting hole is uniform along the extension direction of the line connecting the center of the sound outlet end and the center of the sound inlet end, and the inclination angle is between 10° and 30°.

[0009] In some embodiments, the earphone further comprises a composite sound resistance net arranged between the sound outlet end of the sound collecting hole and the microphone, the composite sound resistance net comprises at least two layers of sub-sound resistance nets which are stacked and arranged at intervals, and the sound input through the sound collecting hole is sequentially input to the microphone after passing through the at least two layers of sub-sound resistance nets.

[0010] In some embodiments, the interval distance between adjacent sub-sound resistance nets is between 0.05 mm and 0.3 mm, and / or the sound resistance of each sub-sound resistance net is between 200 MKS Rayls and 700 MKS Rayls.

[0011] In some embodiments, the number of sound collecting holes corresponds to the number of microphones, and the sound collection area of the microphone is arranged closer to the connecting end than to the sound outlet end of the sound collecting hole.

[0012] In some embodiments, along the length direction, the interval distance between the sound collection area of the microphone and the sound outlet end of the sound collecting hole is between 2 mm and 3 mm.

[0013] In some embodiments, the inner wall of the core shell has an annular partition plate, the annular partition plate surrounds to form a communication groove, and the sound collecting hole communicates with the communication groove; the earphone comprises a circuit board and a sound guide seat, the sound guide seat is arranged on the side of the circuit board facing the communication groove, and the sound guide seat is provided with a sound guide channel, the sound guide seat is embedded in the communication groove under the support of the circuit board, and the composite sound resistance net is pressed and held between the sound guide seat and the core shell, the microphone is arranged on the other side of the circuit board away from the communication groove, the circuit board is provided with a communication hole, and the microphone communicates with the sound collecting hole through the communication hole and the sound guide channel.

[0014] In some embodiments, the core shell has a length direction, a thickness direction and a width direction which are perpendicular to each other, the length direction is the interval direction between the connecting end and the free end, the thickness direction is the direction towards or away from the auricle in the wearing state, the core shell comprises a first shell and a second shell, the first shell and the second shell are matched with each other along the thickness direction and form a first joint seam, the first shell is farther away from the auricle than the second shell in the wearing state, the ear hook comprises an adapter, the adapter is connected with the second shell and forms a second joint seam, the outer surface of the second shell is provided with at least one installation groove arranged in a strip shape, and the long axis direction of the first joint seam, the installation groove and the second joint seam are inclined in the same direction relative to the length direction.

[0015] In some embodiments, the first shell has a first side wall, the second shell has a second side wall, the first side wall and the second side wall are arranged at intervals along the thickness direction, the second side wall is closer to the auricle than the first side wall in the wearing state, and the first joint seam, the long axis direction of the installation groove and the second joint seam are all gradually away from the second side wall along the direction from the free end to the connecting end.

[0016] In some embodiments, the minimum spacing distance between the groove edge of the mounting groove to the first joint seam or / and the groove edge of the mounting groove to the second joint seam is between 1mm and 2mm.

[0017] In some embodiments, the earphone further comprises a speaker assembly arranged in the core shell, the speaker assembly and the core shell form an acoustic front cavity and an acoustic back cavity; wherein the second shell is further provided with a pressure relief hole located in the mounting groove, the pressure relief hole communicates with the acoustic back cavity, an acoustic mesh is arranged in the mounting groove, the acoustic mesh covers the pressure relief hole, and the ratio between the area of the pressure relief hole and the area of the mounting groove is between 0.2 and 0.7.

[0018] The earphone provided by the present application is provided with a core shell, the core shell is provided with a free end and a connecting end, wherein in the wearing state, the connecting end of the earphone is closer to the mouth of the user than the free end, and when the user makes movements such as walking, running or cycling, the airflow near the earphone is generally along the connecting end to the free end. Therefore, the sound inlet end of the sound collecting hole is arranged closer to the free end than the sound outlet end of the sound collecting hole, and the line between the sound outlet end and the sound inlet end of the sound collecting hole can intersect the sagittal axis of the human body and form an acute angle with the sagittal axis in the direction from the front of the human body to the back. At the same time, the sound outlet end is closer to the sagittal axis of the human body than the sound inlet end, so that the sound collecting hole is inclined to the side behind the user's brain compared with the side of the user's mouth. When the airflow flowing from the connecting end to the free end flows into the sound collecting hole at the sound inlet end, it will be blocked by the hole wall of the sound collecting hole and then further enter the sound collecting hole, and then flow to the sound outlet end. The blocking of the hole wall of the sound collecting hole to the airflow reduces the impact of the airflow on the microphone during the blocking process. Therefore, the arrangement of the sound inlet end of the sound collecting hole closer to the free end than the sound outlet end can reduce the impact of the airflow on the microphone in the wearing state, thereby improving the wind noise resistance of the earphone and effectively improving the sound pickup effect of the microphone. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is a front profile schematic view of the ear of a user according to the present application;

[0020] Fig. 2 is a side view of an embodiment of an earphone according to the present application;

[0021] Fig. 3 is a schematic view of the earphone embodiment shown in Fig. 2 in a wearing state;

[0022] Fig. 4 is a side view of a sound emitting part of the earphone embodiment shown in Fig. 2;

[0023] Fig. 5 is an exploded view of the sound emitting part shown in Fig. 4;

[0024] Fig. 6 is a schematic diagram of a cross-sectional structure of the sound production portion shown in Fig. 4 along a cross-sectional line A-A;

[0025] Fig. 7 is an enlarged schematic diagram of a partial region B of the sound production portion shown in Fig. 6;

[0026] Fig. 8 is a schematic diagram of effects of different angles of inclination of an extension direction of at least a part of a sound hole with respect to a thickness direction in an earphone according to an embodiment of the present application;

[0027] Fig. 9 is a schematic diagram of a structure of a part of the sound production portion shown in Fig. 5;

[0028] Fig. 10 is a schematic diagram of effects of setting a single-layer sub sound resistance net and setting a double-layer sub double sound resistance net in an earphone according to an embodiment of the present application;

[0029] Fig. 11 is a schematic diagram of another side view of the sound production portion of the earphone according to the embodiment shown in Fig. 2;

[0030] Fig. 12 is a schematic diagram of a three-dimensional structure of another side view of the earphone according to the embodiment shown in Fig. 2.

DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0032] Reference to "an embodiment" in the present application means that a specific feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. It is explicitly and implicitly understood by a person of ordinary skill in the art that the embodiments described in the present application can be combined with other embodiments.

[0033] The following is an exemplary description of an earphone according to an embodiment.

[0034] With reference to Fig. 1, the ear 100 of a user can include physiological parts such as an external auditory canal 101, a concha cavity 102 and an auricle 103. Although the external auditory canal 101 has a certain depth and extends to the tympanic membrane of the ear 100, for the convenience of description, the external auditory canal 101 specifically refers to an entrance (i.e., an ear hole) thereof away from the tympanic membrane in the present application unless otherwise specified. In addition, the concha cavity 102 has a certain volume and depth, and the concha cavity 102 is directly communicated with the external auditory canal 101, i.e., the aforementioned ear hole can be simply regarded as being located at the bottom of the concha cavity 102.

[0035] The earphone 1 is an audio transducer that converts an electrical signal to sound waves that a user can hear. In some embodiments, the earphone 1 can be an open earphone, such as an ear hook earphone, a behind-the-ear earphone, or an ear clip earphone, etc.

[0036] As shown in FIG. 2 or FIG. 3, the earphone 1 can be an ear hook earphone, in some embodiments, at least a portion of the earphone 1 can be inserted into the concha cavity 102 of the user’s ear in a wearing state, so as to improve the stability of the wearing. In some embodiments, the sound generating part of the earphone 1 can at least partially cover the pinna 103 of the user’s ear, such as the antihelix, the cymba concha, or the triangular fossa (not shown in the figure), but does not block or visually obstruct the external auditory canal 101 of the user’s ear. In some embodiments, the sound generating part 20 of the earphone 1 can also be attached to or abut against the facial area in front of the user’s ear, and the side of the sound generating part 20 for sound generation faces the user’s ear or the user’s external auditory canal 101.

[0037] Further, different users can have individual differences, resulting in different sizes of the ear 100, such as different shapes and sizes. In order to facilitate description and reduce (or even eliminate) individual differences of different users, a simulator containing a head and its (left and right) ear 100 can be made based on ANSI: S3.36, S3.25 and IEC: 60318-7 standards, such as GRAS 45BC KEMAR, HEAD Acoustics, B&K 4128 series or B&K 5128 series, so as to present the scenario of most users wearing the earphone 1. Taking GRAS KEMAR as an example, the simulator of the ear 100 can be any one of GRAS 45AC, GRAS 45BC, GRAS 45CC or GRAS 43AG, etc.; taking HEAD Acoustics as an example, the simulator of the ear 100 can be any one of HMS II.3, HMS II.3LN or HMS II.3LN HEC, etc. Therefore, in this application, descriptions such as “the user wears the earphone 1”, “the earphone 1 is in a wearing state” and “in a wearing state” can refer to the earphone 1 described in this application being worn on the ear 100 of the aforementioned simulator. Of course, because different users have individual differences, the earphone 1 worn by different users can have some differences from the earphone 1 worn on the ear 100 of the aforementioned simulator, but such differences should be tolerated.

[0038] It should be noted that in the field of medicine, anatomy, etc., the sagittal plane, coronal plane and horizontal plane of the human body or human body simulator can be defined as three basic planes, and the sagittal axis, coronal axis and vertical axis can be defined as three basic axes. Among them, the sagittal plane refers to a plane perpendicular to the ground made in the front-to-back direction of the body, which divides the human body or human body simulator into two parts; the coronal plane refers to a plane perpendicular to the ground made in the left-to-right direction of the body, which divides the human body or human body simulator into two parts; the horizontal plane refers to a plane parallel to the ground made in the up-to-down direction of the body, which divides the human body or human body simulator into two parts. Correspondingly, the sagittal axis refers to an axis perpendicular to the coronal plane in the front-to-back direction of the body, the coronal axis refers to an axis perpendicular to the sagittal plane in the left-to-right direction of the body, and the vertical axis refers to an axis perpendicular to the horizontal plane in the up-to-down direction of the body. Further, the "front side of the ear" is a concept relative to the "rear side of the ear", the former refers to the side of the ear away from the head, and the latter refers to the side of the ear towards the head, both of which are for the ear 100 of the user or the simulator. Wherein, observing the ear 100 of the human body or human body simulator in the direction of the coronal axis, as shown in FIG. 1.

[0039] As an example, in combination with FIG. 2 and FIG. 3, the earphone 1 can include an ear hook 10 and a sound emitting part 20 connected to each other. In the wearing state, the ear hook 10 can be hung between the auricle 103 and the head of the user, that is, at least part of the ear hook 10 of the earphone 1 can be located on the rear side of the ear 100, so that the earphone 1 is hung on the ear 100, and the sound emitting part 20 can be located on the front side of the auricle 103. The sound emitting part 20 can be a sound playing device, which can be used to convert electrical signals into sound signals (also referred to as "sound waves" or "sound signals") and propagate to the ear 100 of the wearer.

[0040] In some embodiments, the ear hook 10 can be provided with a battery or a circuit board and the like, or the ear hook 10 can be provided with both a battery and a circuit board. Of course, the ear hook 10 can also not be provided with a battery and a circuit board and the like, and the battery and the circuit board and the like can be installed in the sound emitting part 20.

[0041] As shown in FIGS. 2-5, the sound emitting part 20 can include a core housing 210 and a microphone 220. The ear hook 10 can be connected with the core housing 210, and the microphone 220 can be arranged inside the core housing 210. In some embodiments, the earphone 1 can further include a speaker assembly 30 arranged inside the core housing 210. The speaker assembly 30 is a component that can convert an electrical signal into a corresponding acoustic signal to realize the sound playing function of the sound emitting part 20. As an example, the speaker assembly 30 can include a bone conduction speaker and an air conduction speaker, and in other embodiments, the speaker assembly 30 can also be arranged as one of the air conduction speaker and the bone conduction speaker.

[0042] In some embodiments, as shown in FIGS. 2 and 3, the core housing 210 can have a connection end 211 connected with the ear hook 10 and a free end 212 away from the connection end 211. In the wearing state, the connection end 211 is closer to the mouth of the user than the free end 212. In other words, in the wearing state, the free end 212 of the earphone 1 connected with the ear hook 10 is closer to the back of the brain of the user than the connection end 211.

[0043] In some embodiments, as shown in FIGS. 4-7, the core housing 210 can be provided with a sound collecting hole 213 between the free end 212 and the connection end 211, and the microphone 220 collects the sound outside the earphone 1 through the sound collecting hole 213. The sound outside the earphone 1 can be, for example, the user's speaking sound, the sound of a whistle, the sound of a bell, the sound of surrounding people, or the sound of traffic guidance, etc.

[0044] In some embodiments, the sound outlet end 2131 of the sound collecting hole 213 can be arranged closer to the connection end 211 than the sound inlet end 2132 of the sound collecting hole 213. The sound inlet end 2132 of the sound collecting hole 213 refers to the end of the sound collecting hole 213 facing the outside of the core housing 210, and the sound outside the earphone 1 enters the sound collecting hole 213 from the sound inlet end 2132. The sound outlet end 2131 of the sound collecting hole 213 refers to the end of the sound collecting hole 213 facing the inside of the core housing 210, and the sound entering the sound collecting hole 213 from the sound inlet end 2132 enters the inside of the core housing 210 from the sound outlet end 2131 to be collected by the microphone 220.

[0045] As an example, the direction of the line between the center of the sound outlet end 2131 of the sound collecting hole 213 and the center of the sound inlet end 2132 can be crossed with the sagittal axis of the human body and forms an acute angle with the sagittal axis in the direction from the front of the human body to the back of the human body, and the sound outlet end 2131 is closer to the sagittal axis of the human body than the sound inlet end 2132, so that the sound collecting hole 213 is inclined to the side of the back of the brain of the user compared to the side of the mouth of the user. The direction of the line between the sound outlet end 2131 and the sound inlet end 2132 of the sound collecting hole 213 can be as shown by the arrow C in FIGS. 6 and 7.

[0046] In the wearing state, the connection end 211 of the earphone 1 is closer to the mouth of the user than the free end 212, and thus when the user makes a movement such as walking, running, or cycling, the airflow near the earphone 1 is generally from the connection end 211 to the free end 212. Therefore, the sound inlet end 2132 of the sound collecting hole 213 is arranged closer to the free end 212 than the sound outlet end 2131 of the sound collecting hole 213, so that the line between the sound outlet end 2131 and the sound inlet end 2132 of the sound collecting hole 213 can be arranged to intersect the sagittal axis of the human body and form an acute angle with the sagittal axis in the direction from the front of the human body to the back of the human body, and the sound outlet end 2131 is closer to the sagittal axis of the human body than the sound inlet end 2132. When the airflow from the connection end 211 to the free end 212 flows into the sound collecting hole 213 at the sound inlet end 2132, the airflow is first blocked by the hole wall of the sound collecting hole 213 and then further enters the sound collecting hole 213, and then flows to the sound outlet end 2131. The blocking of the airflow by the hole wall of the sound collecting hole 213 makes the airflow not directly enter the sound collecting hole 213, and the impact of the airflow on the microphone 220 is reduced during the blocking of the airflow by the hole wall of the sound collecting hole 213. The arrangement of the sound inlet end 2132 of the sound collecting hole 213 closer to the free end 212 than the sound outlet end 2131 can reduce the impact of the airflow on the microphone 220 in the wearing state, thereby improving the wind noise resistance of the earphone 1 and effectively improving the sound pickup effect of the microphone 220.

[0047] In some embodiments, the core shell 210 can have a length direction, a thickness direction, and a width direction orthogonal to each other. The length direction can be the interval direction of the connection end 211 and the free end 212. The interval direction of the connection end 211 and the free end 212 refers to the extension direction of the line between the connection end 211 and the free end 212. In some embodiments, the connection end 211 and the free end 212 can be irregular or regular circular arcs, and the extension direction of the line between the connection end 211 and the free end 212 can refer to the direction defined by a straight line perpendicular to a parallel tangent plane of the two reference points on the connection end 211 and the free end 212 with the farthest relative distance. The length direction can also be defined as the direction in which the core shell 210 approaches or moves away from the back of the head in the wearing state. In other words, the length direction can be the direction indicated by arrow X in FIGS. 2 to 7.

[0048] The thickness direction can be the direction in which the earphone 1 faces or moves away from the auricle 103 in the wearing state. The thickness direction can be the direction indicated by arrow Y in FIGS. 2 to 7. The thickness direction can be substantially parallel to the vibration direction of the loudspeaker assembly 30, and substantially parallel refers to a spatial included angle between the two directions less than 5°.

[0049] The width direction can be defined as the direction in which the core shell 210 approaches or moves away from the top of the head in the wearing state. The width direction can be the direction indicated by arrow Z in FIGS. 2 to 7.

[0050] In some embodiments, at least part of the hole section of the sound inlet hole 213 can be arranged obliquely relative to the length direction X and the thickness direction Y. In this way, the sound outlet end 2131 of the sound inlet hole 213 can be arranged closer to the connecting end 211 than the sound inlet end 2132 of the sound inlet hole 213, so that in the wearing state, the external airflow entering the sound inlet hole 213 from the sound inlet end 2132 and flowing to the sound outlet end 2131 is blocked by at least part of the oblique hole section, rather than directly flowing to the sound outlet end 2131 and impacting the microphone 220, so that the impact of the airflow on the microphone 220 in the wearing state can be reduced, thereby improving the wind noise resistance of the earphone 1 and effectively improving the sound pickup effect of the microphone 220.

[0051] In some embodiments, the cross-sectional area of the sound outlet end 2131 and the sound inlet end 2132 of the sound inlet hole 213 can be the same.

[0052] In some embodiments, as shown in FIG. 7, the cross-sectional area of the sound inlet hole 213 can be consistent along the extension direction of the line connecting the center of the sound outlet end 2131 and the center of the sound inlet end 2132, and the sound inlet hole 213 as a whole can be arranged obliquely relative to the length direction X and the thickness direction Y. By arranging the cross-sectional area of the sound inlet hole 213 to remain consistent along the extension direction of the line connecting the center of the sound outlet end 2131 and the center of the sound inlet end 2132, the hole wall of the sound inlet hole 213 can block most of the airflow when external sound passes through the sound inlet hole 213, thereby reducing wind noise and reducing the weakening of effective sound information by the sound inlet hole 213, thereby ensuring the sound pickup effect and wind noise resistance effect of the microphone 220.

[0053] In some embodiments, the effective sound information can refer to target information, such as the voice information of a caller or warning information, etc. In some embodiments, the effective sound information can refer to target frequency band sound information, such as sound information with a frequency band of 500Hz-1kHz, 1kHz-2kHz, or 200Hz-2kHz, etc.

[0054] In some embodiments, in order to ensure the wind noise resistance effect of the sound inlet hole 213, the inclination angle of the extension direction of all hole sections of the sound inlet hole 213 relative to the thickness direction Y can be in the range of 0°-40°. In some embodiments, in order to further improve the wind noise resistance effect of the sound inlet hole 213, the inclination angle of the extension direction of all hole sections of the sound inlet hole 213 relative to the thickness direction Y can be in the range of 10°-20°.

[0055] In some embodiments, a portion of the hole section of the sound hole 213 can be arranged in an inclined manner, and the other portion of the hole section can be arranged in a curved manner to adapt to the structure inside the movement housing 210, so that the curved portion of the hole section can avoid other elements inside the movement housing 210, and such an arrangement can further enhance the wind noise reduction effect of the sound hole 213. In some embodiments, in order to further reduce the influence of wind noise, the sound hole 213 can be arranged in an overall arc-shaped curved manner.

[0056] In some embodiments, the sound hole 213 can be arranged in a plurality of bending manners, so that the sound outlet end 2131 of the sound hole 213 is arranged closer to the connecting end 211 than the sound inlet end 2132 of the sound hole 213, while being able to avoid other electronic elements installed inside the movement housing 210, and avoid the size of the movement housing 210 being too large.

[0057] In some embodiments, as shown in FIGS. 6 and 7, the movement housing 210 can include a first side wall 214 and a second side wall 215 arranged in a thickness direction Y. The second side wall 215 is closer to the auricle 103 than the first side wall 214 in the wearing state. The sound hole 213 can be arranged on the first side wall 214, and the inclination angle of the extension direction of at least a portion of the hole section of the sound hole 213 with respect to the thickness direction Y is greater than 0° and less than or equal to 40°. As an example, the extension direction of at least a portion of the hole section of the sound hole 213 can also be shown by arrow C in FIG. 7, and the inclination angle of the extension direction of at least a portion of the hole section of the sound hole 213 with respect to the thickness direction Y can be shown by the angle a in FIG. 7.

[0058] As shown in FIG. 8, FIG. 8 shows the effect comparison when the extension direction of at least a portion of the hole section of the sound hole 213 is inclined at different angles with respect to the thickness direction Y under the same conditions. As can be seen from FIG. 8, the wind noise decibels collected by the microphone 220 gradually decrease as the inclination angle a increases, for example, when the inclination angle a of the extension direction of at least a portion of the hole section of the sound hole 213 with respect to the thickness direction Y is 10°, the wind noise decibels collected by the microphone 220 are lower than those when the inclination angle a is 0°, and when the inclination angle a is 30°, the wind noise is lower than that when the inclination angle a is 20°. Therefore, as shown by the effect in FIG. 8, the greater the inclination angle a of the extension direction of at least a portion of the hole section of the sound hole 213 with respect to the thickness direction Y, the better the wind noise reduction effect of the sound hole 213.

[0059] If the extension direction of all hole sections of the sound hole 213 is equal to 0° (i.e., the extension direction of the line connecting the center of the sound inlet end 2132 and the center of the sound outlet end 2131 of the sound hole 213 is parallel to the thickness direction Y) relative to the inclination angle a of the thickness direction Y, when the external airflow flows through the core shell 210, the airflow component along the thickness direction Y will directly impact the microphone 220 vertically through the sound hole 213, generating greater wind noise and reducing the pickup effect of the microphone 220.

[0060] When the extension direction of at least part of the hole sections of the sound hole 213 is greater than 40° relative to the inclination angle a of the thickness direction Y, the sound hole 213 has a stronger blocking effect on the airflow, but the sound hole 213 also occupies a larger space in the core shell 210, and due to the excessively large inclination angle a, the processing of the sound hole 213 is not conducive, thereby increasing the difficulty of manufacturing the earphone 1, and the large inclination angle a of the sound hole 213 will further result in a longer length of the sound hole 213, thereby excessively weakening the effective sound information entering the sound hole 213.

[0061] The inclination angle a is set to be greater than 0° and less than or equal to 40°, thereby facilitating the wind noise resistance of the sound hole 213 while reducing the processing difficulty of the sound hole 213, reducing the space occupied by the sound hole 213, and avoiding weakening the collection of effective sound information. For example, the extension direction of at least part of the hole sections of the sound hole 213 relative to the thickness direction Y can be 5°, 23°, 30°, or 40°, etc.

[0062] In some embodiments, the inclination angle a can be between 10° and 30°. Setting the inclination angle a to be between 10° and 30° can ensure the wind noise resistance effect of the sound hole 213 while reducing the processing difficulty of the sound hole 213 and reducing the space occupied by the sound hole 213, thereby preserving more effective sound information. As an example, the inclination angle a can be 10°, 12°, 15°, 18°, 20°, or 25°, etc.

[0063] In some embodiments, the number of sound holes 213 can correspond to the number of microphones 220. That is, one microphone 220 corresponds to one sound hole 213, and one microphone 220 collects external sound only through one sound hole 213. In this way, the wind noise caused by the airflow flowing through multiple sound holes 213 can be reduced, thereby improving the pickup effect of the microphone 220 while reducing the processing difficulty of the core shell 210.

[0064] As an example, the sound emitting part 20 can have a plurality of sound collecting holes 213 and a plurality of microphones 220. For example, the sound emitting part 20 includes two microphones 220 and two sound collecting holes 213, and the two microphones 220 are arranged one-to-one with the two sound collecting holes 213, so that one microphone 220 collects external sound only through one sound collecting hole 213.

[0065] In some embodiments, as shown in FIG. 7 and FIG. 9, the earphone 1 can further include a composite sound resistance net 40 arranged between the sound outlet end 2131 of the sound collecting hole 213 and the microphone 220. The composite sound resistance net 40 can include at least two layers of sub-sound resistance nets 410 arranged in layers and spaced apart from each other, and the sound input through the sound collecting hole 213 is sequentially input to the microphone 220 after passing through the at least two layers of sub-sound resistance nets 410.

[0066] Specifically, arranging the composite sound resistance net 40 between the sound outlet end 2131 of the sound collecting hole 213 and the microphone 220 can make the composite sound resistance net 40 further reduce wind noise after the airflow flows out of the sound outlet end 2131 of the sound collecting hole 213, increase the effect of wind noise reduction, and improve the sound pickup effect of the microphone 220. In some embodiments, the sub-sound resistance net 410 can be a combination of steel mesh and gauze, or can be all gauze or all steel mesh.

[0067] In some embodiments, the number of sub-sound resistance nets 410 can be two layers, which can not only strengthen the effect of wind noise reduction, but also reduce the weakening of effective sound information, so that the microphone 220 can collect clearer sound, thereby improving the sound pickup effect, while avoiding increasing the thickness of the core shell 210 and reducing the excessive occupation of space.

[0068] As shown in FIG. 10, FIG. 10 shows the effect comparison between arranging two layers of sub-sound resistance nets 410 and arranging one layer of sub-sound resistance net 410 under the same conditions, and the performance parameters of the sub-sound resistance net 410 are the same. As can be seen from FIG. 10, in the case of arranging two layers of sub-sound resistance nets 410 between the sound outlet end 2131 and the microphone 220, the wind noise decibels of the sound collected by the microphone 220 are lower than those when arranging one layer of sub-sound resistance net 410, so it can be seen that the wind noise reduction effect of arranging two layers of sub-sound resistance nets 410 is better than that of arranging one layer of sub-sound resistance net 410.

[0069] In some embodiments, in order to improve the wind noise reduction capability of the earphone 1, for example, when the user uses the earphone 1 in windy or harsh weather environment, the number of sub-sound resistance nets 410 can also be three layers, four layers or five layers, etc., which is not specifically limited in the present embodiment.

[0070] In some embodiments, the interval distance between adjacent sub acoustic resistance nets 410 can be between 0.05mm and 0.3mm. If the interval distance between adjacent sub acoustic resistance nets 410 is less than 0.05mm, the difficulty of manufacturing and connecting the sub acoustic resistance nets 410 will be increased. If the interval distance between adjacent sub acoustic resistance nets 410 is greater than 0.3mm, the composite acoustic resistance net 40 will occupy a larger space, and the wind noise resistance effect will also be affected. Therefore, by setting the interval distance between adjacent sub acoustic resistance nets 410 to be between 0.05mm and 0.3mm, the occupied space of the composite acoustic resistance net 40 can be reduced, the wind noise resistance effect of the composite acoustic resistance net 40 can be ensured, and the addition and manufacturing of multiple layers of sub acoustic resistance nets 410 can also be facilitated. As an example, the interval distance between adjacent sub acoustic resistance nets 410 can be 0.05mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm or 0.3mm, etc.

[0071] In some embodiments, adjacent sub acoustic resistance nets 410 can be bonded together by bonding. In this way, the interval distance between adjacent sub acoustic resistance nets 410 can be more easily controlled between 0.05mm and 0.3mm, thereby reducing the occupied space of the composite acoustic resistance net 40, facilitating the addition and manufacturing of multiple layers of sub acoustic resistance nets 410, and ensuring the connection strength between multiple layers of sub acoustic resistance nets 410.

[0072] In some embodiments, the acoustic resistance of each sub acoustic resistance net 410 can be between 200MKS Rayls and 700MKS Rayls. The acoustic resistance of the sub acoustic resistance net 410 can affect the speed of the airflow passing through the sub acoustic resistance net 410. The greater the acoustic resistance of the sub acoustic resistance net 410, the more obvious the effect of the sub acoustic resistance net 410 on the airflow speed, and the slower the airflow passing through the sub acoustic resistance net 410. Correspondingly, the smaller the acoustic resistance of the sub acoustic resistance net 410, the smaller the effect of the sub acoustic resistance net 410 on the airflow speed.

[0073] If the acoustic resistance of the sub acoustic resistance net 410 is less than 200MKS Rayls, the sub acoustic resistance net 410 has a small blocking effect on the airflow, thereby weakening the wind noise resistance ability of the sub acoustic resistance net 410. If the acoustic resistance of the sub acoustic resistance net 410 is greater than 700MKS Rayls, the acoustic resistance of the sub acoustic resistance net 410 is too large, which can greatly weaken the effective sound information, thereby affecting the sound pickup effect of the microphone 220. Therefore, the acoustic resistance of the sub acoustic resistance net 410 can be set to be between 200MKS Rayls and 700MKS Rayls, so as to improve the wind noise resistance effect of the sub acoustic resistance net 410 while reducing the weakening of the sound by the sub acoustic resistance net 410, thereby improving the sound pickup effect of the microphone 220.

[0074] As an example, the acoustic resistance of the sub-acoustic resistance net 410 can be 200 MKS Rayls, 260 MKS Rayls, 370 MKS Rayls, 430 MKS Rayls, or 660 MKS Rayls, etc.

[0075] In some embodiments, as shown in FIG. 7, the sound collection area 221 of the microphone 220 is arranged closer to the connecting end 211 than the sound outlet end 2131 of the sound hole 213, so that the sound collection area 221 and the sound outlet end 2131 are staggered in the length direction X and the thickness direction Y, thereby forming an angle between the sound collection area 221 and the sound outlet end 2131. In this way, after the airflow exits the sound hole 213 through the sound outlet end 2131, it is not easy to directly reach the sound collection area 221 of the microphone 220, thereby reducing the wind noise caused by the airflow directly impacting the sound collection area 221 of the microphone 220, and thus improving the wind noise resistance effect.

[0076] In some embodiments, along the length direction X, the interval distance between the sound collection area 221 of the microphone 220 and the sound outlet end 2131 of the sound hole 213 can be between 2mm and 3mm. The interval distance between the sound collection area 221 of the microphone 220 and the sound outlet end 2131 of the sound hole 213 refers to the distance between the center position of the sound collection area 221 and the hole center position of the sound outlet end 2131. The interval distance between the sound collection area 221 and the sound outlet end 2131 can be shown as distance d in FIG. 7. If the interval distance between the sound collection area 221 of the microphone 220 and the sound outlet end 2131 of the sound hole 213 is greater than 3mm, the space between the microphone 220 and the sound hole 213 will be larger, thereby occupying a larger space of the movement core shell 210, and prolonging the sound wave transmission path and increasing the loss of effective sound information. If the interval distance between the sound collection area 221 of the microphone 220 and the sound outlet end 2131 of the sound hole 213 is less than 2mm, the distance between the sound collection area 221 of the microphone 220 and the sound outlet end 2131 of the sound hole 213 will be too small, and the airflow from the sound outlet end 2131 will easily directly impact the sound collection area 221 of the microphone 220, thereby making the wind noise resistance effect poor.

[0077] By setting the interval distance between the sound collection area 221 of the microphone 220 and the sound outlet end 2131 of the sound hole 213 to be between 2mm and 3mm, the wind noise resistance effect can be enhanced while avoiding excessive loss of effective sound information, reducing the space between the microphone 220 and the sound hole 213, and thus reducing the size of the movement core shell 210 in the length direction X.

[0078] As an example, the interval distance between the sound collection area 221 of the microphone 220 and the sound outlet end 2131 of the sound hole 213 can be set to 2 mm, 2.3 mm, 2.5 mm, 2.7 mm, or 3 mm, etc.

[0079] In some embodiments, as shown in FIG. 7, the inner wall of the core shell 210 can have an annular partition 216, which can surround to form a communication groove 2161, and the sound hole 213 communicates with the communication groove 2161.

[0080] As shown in FIGS. 7 and 9, the earphone 1 can include a circuit board 50 and a sound guide seat 60. The circuit board 50 and the sound guide seat 60 are both mounted in the core shell 210. The sound guide seat 60 is arranged opposite and coaxially with the communication groove 2161. The sound guide seat 60 can be arranged on the side of the circuit board 50 facing the communication groove 2161, and is provided with a sound guide channel 610. The sound guide seat 60 can be embedded in the communication groove 2161 under the support of the circuit board 50, and press holds the composite sound resistance net 40 between the sound guide seat 60 and the core shell 210. The microphone 220 can be arranged on the other side of the circuit board 50 away from the communication groove 2161, and the circuit board 50 can be provided with a communication hole 510. The sound collection area 221 of the microphone 220 communicates with the sound hole 213 through the communication hole 510 and the sound guide channel 610. In this way, the annular partition 216 and the sound guide seat 60 can play a role in limiting and fixing the composite sound resistance net 40, ensuring that the composite sound resistance net 40 will not be easily displaced during installation, thereby ensuring the wind noise resistance effect of the earphone 1.

[0081] In some embodiments, the circuit board 50 and the annular partition 216 can be abutted or connected, so that the sound guide seat 60 can at least partially extend into the communication groove 2161. In order to avoid the loss of effective sound information caused by the escape of sound waves, a sealing gasket (not shown in the figure) can also be arranged between the sound guide seat 60 and the circuit board 50. In some embodiments, the circuit board 50 and the annular partition 216 can be connected by bonding, welding, clamping, screwing, or sealing connection, etc.

[0082] In some embodiments, as shown in FIG. 2, the core shell 210 can include a first shell 217 and a second shell 218. The first shell 217 and the second shell 218 can be matched with each other along the thickness direction Y and form a first joint seam 201. In the wearing state, the first shell 217 is farther away from the auricle 103 than the second shell 218.

[0083] In some embodiments, as shown in FIG. 2, the ear hook 10 can include an adapter 110 connected with the second shell 218 and forming a second joint seam 202. An outer surface of the second shell 218 can be provided with at least one mounting groove 2171 arranged in a long strip shape. The first joint seam 201, the long axis direction of the mounting groove 2171, and the second joint seam 202 are all inclined in the same direction relative to the length direction X.

[0084] In some embodiments, the first joint seam 201 can be at least part of the joint seam of the first shell 217 and the second shell 218. The second joint seam 202 can be at least part of the joint seam of the adapter 110 of the ear hook 10 and the second shell 218. The long axis direction of the mounting groove 2171 refers to the extension direction of the mounting groove 2171 arranged in a long strip shape along its length direction, which can be indicated by the direction of the E arrow in FIG. 11.

[0085] In some embodiments, as shown in FIG. 2, FIG. 11, and FIG. 12, the core shell 210 can have a third side wall 219 and a fourth side wall 2110, which can be spaced apart along the width direction Z. The third side wall 219 can be connected with the first side wall 214 and the second side wall 215 along the thickness direction Y, respectively. The fourth side wall 2110 can be connected with the first side wall 214 and the second side wall 215 along the thickness direction Y, respectively. The first joint seam 201 is part of the joint seam of the first shell 217 and the second shell 218 located on the third side wall 219. The second joint seam 202 is part of the joint seam of the adapter 110 and the second shell 218 located on the third side wall 219.

[0086] The first joint seam 201, the long axis direction of the mounting groove 2171, and the second joint seam 202 are inclined in the same direction relative to the length direction X, which means that the first joint seam 201, the long axis direction of the mounting groove 2171, and the second joint seam 202 are all inclined relative to the length direction X, and the inclination angles are the same or differ by no more than 5°. In this way, the first shell 217, the second shell 218, and the adapter 110 of the ear hook 10 can support each other, thereby improving the strength of the second shell 218 at the mounting groove 2171 and further improving the strength of the core shell 210. Moreover, the parallel arrangement of the first joint seam 201 and the second joint seam 202 can eliminate the need to adjust the mounting direction to align the first shell 217 and the second shell 218 during the mounting process, thereby reducing the mounting process and improving the efficiency of the mounting. The parallel and same-direction inclined arrangement of the first joint seam 201, the long axis direction of the mounting groove 2171, and the second joint seam 202 can also improve the aesthetics of the earphone 1.

[0087] In some embodiments, as shown in FIG. 5, FIG. 6 and FIG. 11, the earphone 1 comprises a speaker assembly 30 disposed in the core housing 210, and the speaker assembly 30 can form an acoustic front cavity 310 and an acoustic back cavity 320 in cooperation with the core housing 210. The speaker assembly 30 comprises a speaker 330, which can be an air-conduction speaker. The speaker 330 comprises a diaphragm 321, which separates the acoustic front cavity 310 and the acoustic back cavity 320.

[0088] The second housing 218 can be provided with a sound outlet hole 2173, and the acoustic front cavity 310 communicates with the sound outlet hole 2173. The sound generated at the front side of the diaphragm 321 is transmitted to the outside through the acoustic front cavity 310 and the sound outlet hole 2173. In some embodiments, the second housing 218 is further provided with a pressure relief hole 2172 located in the mounting groove 2171, and the pressure relief hole 2172 communicates the acoustic back cavity 320 and the outside of the core housing 210. The air pushed by the back side of the diaphragm 321 can flow from the acoustic back cavity 320 to the outside of the core housing 210, so as to prevent the pressure in the acoustic back cavity 320 from accumulating and affecting the sound quality of the speaker assembly 30.

[0089] In some embodiments, as shown in FIG. 11, the acoustic mesh 70 can be disposed in the mounting groove 2171 and cover the pressure relief hole 2172. Specifically, the acoustic mesh 70 is disposed on the side of the pressure relief hole 2172 away from the inside of the core housing 210, and the acoustic mesh 70 is exposed on the outer surface of the core housing 210. The acoustic mesh 70 is used to isolate dust, particles and water droplets in the air, so that dust, particles and water droplets in the air are less likely to enter the acoustic back cavity 320, thereby reducing the degree of corrosion or damage to the speaker assembly 30.

[0090] As an example, the acoustic mesh 70 can be a piece of isolation cotton, a gauze or a steel mesh, etc.

[0091] In some embodiments, the ratio between the area of the pressure relief hole 2172 and the area of the mounting groove 2171 can be between 0.2 and 0.7. The area of the mounting groove 2171 refers to the area of the long strip shape of the mounting groove 2171. If the ratio between the area of the pressure relief hole 2172 and the area of the mounting groove 2171 is less than 0.2, it means that the area of the pressure relief hole 2172 is too small or the area of the mounting groove 2171 is too large. The area of the pressure relief hole 2172 is too small or leads to poor pressure relief effect on the acoustic back cavity 320, thereby affecting the sound quality effect of the speaker assembly 30. The area of the mounting groove 2171 is too large, which increases the overall size of the earphone 1 and affects the comfort of wearing. If the ratio between the area of the pressure relief hole 2172 and the area of the mounting groove 2171 is greater than 0.7, it means that the area of the pressure relief hole 2172 occupies too much area in the mounting groove 2171, which is not conducive to installing the acoustic mesh 70 in the mounting groove 2171. Therefore, by setting the ratio between the area of the pressure relief hole 2172 and the area of the mounting groove 2171 to be between 0.2 and 0.7, the pressure relief effect on the acoustic back cavity 320 can be enhanced, and the acoustic mesh 70 can be easily installed in the mounting groove 2171, thereby reducing the assembly difficulty of the earphone 1.

[0092] For example, the ratio between the area of the pressure relief hole 2172 and the area of the mounting groove 2171 can be set to 0.2, 0.3, 0.4, 0.5, or 0.6, etc.

[0093] In some embodiments, the minimum distance between the groove edge of the mounting groove 2171 to the first joint seam 201 or the minimum distance between the groove edge of the mounting groove 2171 to the second joint seam 202 can be between 1 mm and 2 mm.

[0094] In some embodiments, the minimum distance between the groove edge of the mounting groove 2171 to the first joint seam 201 or the minimum distance between the groove edge of the mounting groove 2171 to the second joint seam 202 can be between 1 mm and 2 mm.

[0095] Specifically, if the minimum interval distance from the groove edge of the mounting groove 2171 to the first joint seam 201 or from the groove edge of the mounting groove 2171 to the second joint seam 202 is less than 1 mm, it indicates that the mounting groove 2171 is too close to the edge position of the second shell 218, so it is difficult to form the mounting groove 2171 on the second shell 218, which increases the difficulty of preparing the earphone 1 and affects the structural strength of the core shell 210. If the minimum interval distance from the groove edge of the mounting groove 2171 to the first joint seam 201 or from the groove edge of the mounting groove 2171 to the second joint seam 202 is greater than 2 mm, it indicates that the processing space of the mounting groove 2171 is too small, which affects the size of the pressure relief hole 2172 and the pressure relief effect of the pressure relief hole 2172 on the acoustic back cavity 320, or indicates that the second shell 218 is too large, which may affect the size of the sound generating part 20 of the earphone 1.

[0096] Therefore, the minimum interval distance from the groove edge of the mounting groove 2171 to the first joint seam 201 or from the groove edge of the mounting groove 2171 to the second joint seam 202 is between 1 mm and 2 mm, which can facilitate the formation of the mounting groove 2171 on the second shell 218, reduce the difficulty of preparing the earphone 1, ensure the pressure relief effect of the pressure relief hole 2172 on the acoustic back cavity 320, and reduce the size of the sound generating part 20 of the earphone 1.

[0097] In some embodiments, the minimum interval distance from the groove edge of the mounting groove 2171 to the first joint seam 201 and from the groove edge of the mounting groove 2171 to the second joint seam 202 can be between 1 mm and 2 mm.

[0098] For example, the minimum interval distance from the groove edge of the mounting groove 2171 to the first joint seam 201 or from the groove edge of the mounting groove 2171 to the second joint seam 202 can be 1 mm, 1.32 mm, 1.66 mm, or 1.82 mm, etc. Alternatively, the minimum interval distance from the groove edge of the mounting groove 2171 to the first joint seam 201 and from the groove edge of the mounting groove 2171 to the second joint seam 202 can be 1 mm, 1.32 mm, 1.66 mm, or 1.82 mm, etc.

[0099] In some embodiments, as shown in FIG. 11, the first shell 217 can have a first side wall 214, and the second shell 218 can have a second side wall 215. The first side wall 214 and the second side wall 215 can be spaced apart along the thickness direction Y. The second side wall 215 can be closer to the auricle 103 than the first side wall 214 in the wearing state.

[0100] In some embodiments, the first joint seam 201, the long axis direction of the mounting groove 2171, and the second joint seam 202 can all gradually move away from the second side wall 215 in a direction from the free end 212 to the connecting end 211. In other words, the end of the first joint seam 201, the mounting groove 2171, and the second joint seam 202 close to the free end 212 is away from the first side wall 214, and the end of the first joint seam 201, the mounting groove 2171, and the second joint seam 202 away from the free end 212 is close to the first side wall 214.

[0101] Since the earphone 1 is worn on the ear 100 of the user, and the user is most likely to touch the free end 212 and the first side wall 214 close to the free end 212 when operating the earphone 1, setting the mounting groove 2171 such that the end thereof close to the free end 212 is away from the first side wall 214 can make it difficult for the user to press the mounting groove 2171 when touching the sound production unit 20, so as to avoid blocking the pressure relief hole 2172, thereby ensuring the pressure relief effect of the pressure relief hole 2172 on the acoustic back cavity 320 as much as possible.

[0102] In some embodiments, in combination with FIGS. 5, 6, and 11, the loudspeaker assembly 30 can include a voice coil support 340, the loudspeaker 330 is provided with an annular mesa 331, and the voice coil support 340 is supported on the annular mesa 331 and cooperates with the loudspeaker 330 to form the acoustic back cavity 320. When viewed in the width direction Z, the hole rim of the pressure relief hole 2172 has an edge straight section 2174, and the edge straight section 2174 is flush or parallel with the annular mesa 331. In this way, the hole rim of the pressure relief hole 2172 cooperates with the annular mesa 331 to avoid the annular mesa 331, thereby reducing the dead area of the pressure relief hole 2172 and improving the space utilization.

[0103] In some embodiments, the number of the mounting grooves 2171 and the pressure relief holes 2172 can be multiple, and the number of the mounting grooves 2171 corresponds to the number of the pressure relief holes 2172, that is, one pressure relief hole 2172 is arranged in each mounting groove 2171.

[0104] As an example, in combination with FIGS. 3 and 12, the number of the mounting grooves 2171 can be two, and the two mounting grooves 2171 are arranged on the second housing 218 and are spaced apart in the width direction Z. The groove wall in each mounting groove 2171 is correspondingly provided with a pressure relief hole 2172, and the two pressure relief holes 2172 can both communicate with the acoustic back cavity 320. The number of the acoustic nets 70 can also be two, and the two acoustic nets 70 are correspondingly arranged in the two mounting grooves 2171.

[0105] In some embodiments, a plurality of pressure relief holes 2172 can also be formed in a mounting groove 2171, for example, two pressure relief holes 2172 or three pressure relief holes 2172 can be formed in a mounting groove 2171. In this way, higher pressure relief requirements can be met, thereby preventing the pressure in the acoustic back cavity 320 from accumulating to a greater extent, further improving the sound quality of the loudspeaker assembly 30.

[0106] In summary, the earphone 1 described in the present application is provided with a movement core shell 210, which is provided with a free end 212 and a connection end 211. In the wearing state, the connection end 211 of the earphone 1 is closer to the mouth of the user than the free end 212, and when the user makes movements such as walking, running or cycling, the airflow near the earphone 1 is generally along the connection end 211 to the free end 212. Therefore, the sound inlet end 2132 of the sound collecting hole 213 is arranged closer to the free end 212 than the sound outlet end 2131 of the sound collecting hole 213, and the line between the sound inlet end 2132 and the sound outlet end 2131 of the sound collecting hole 213 can intersect the sagittal axis of the human body and form an acute angle with the sagittal axis in the direction from the front of the human body to the back. At the same time, the sound outlet end 2131 is closer to the sagittal axis of the human body than the sound inlet end 2132, so that the sound collecting hole 213 is inclined to the side of the user's back of the head compared to the side of the user's mouth. When the airflow from the connection end 211 to the free end 212 flows into the sound collecting hole 213 at the sound inlet end 2132, it will be blocked by the hole wall of the sound collecting hole 213 and then further enter the sound collecting hole 213, and then flow to the sound outlet end 2131. The blocking of the airflow by the hole wall of the sound collecting hole 213 makes the airflow not directly flow to the sound outlet end 2131, and the impact of the airflow on the microphone 220 will be reduced during the blocking process. Therefore, the arrangement of the sound inlet end 2132 of the sound collecting hole 213 closer to the free end 212 than the sound outlet end 2131 can reduce the impact of the airflow on the microphone 220 in the wearing state, thereby improving the wind noise resistance of the earphone 1, and effectively improving the sound pickup effect of the microphone 220.

[0107] The above description is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. An earphone, characterized by comprising: The earphone comprises ear hooks connected with each other and a sound generating part, the ear hooks are hung between the auricles and the head of a user, the sound generating part is located in front of the auricles, the sound generating part comprises a core shell and a microphone, the ear hooks are connected with the core shell, the microphone is arranged inside the core shell, the core shell has a connecting end connected with the ear hooks and a free end away from the connecting end, in a wearing state, the connecting end is closer to the mouth of the user than the free end, the core shell is provided with a sound collecting hole located between the free end and the connecting end, the microphone collects sound outside the earphone through the sound collecting hole, and the sound outlet end of the sound collecting hole is arranged closer to the connecting end than the sound inlet end.

2. The earphone of claim 1, wherein, The core shell has a length direction and a thickness direction perpendicular to each other, the length direction is the interval direction of the connecting end and the free end, and the thickness direction is the direction towards or away from the auricles in the wearing state, and at least part of the hole section of the sound collecting hole is arranged obliquely relative to the length direction and the thickness direction.

3. The earphone of claim 2, wherein The core shell comprises a first side wall and a second side wall arranged at intervals along the thickness direction, the second side wall is closer to the auricles than the first side wall in the wearing state, the sound collecting hole is arranged on the first side wall, and the inclination angle of the extension direction of at least part of the hole section of the sound collecting hole relative to the thickness direction is greater than 0° and less than or equal to 40°.

4. The earphone of claim 3, wherein The number of the sound collecting holes corresponds to the number of the microphones, the cross-sectional areas of the sound collecting holes are consistent along the extension direction of the line connecting the center of the sound outlet end and the center of the sound inlet end, and the inclination angle is between 10° and 30°.

5. The earphone according to any one of claims 1-4, characterized in that, The earphone further comprises a composite sound resistance net arranged between the sound outlet end of the sound collecting hole and the microphone, the composite sound resistance net comprises at least two layers of sub-sound resistance nets stacked and arranged at intervals, and sound input through the sound collecting hole is input to the microphone after sequentially passing through the at least two layers of sub-sound resistance nets.

6. The earphone of claim 5, wherein, The interval distance between adjacent sub-sound resistance nets is between 0.05 mm and 0.3 mm, and / or the sound resistance of each sub-sound resistance net is between 200 MKS Rayls and 700 MKS Rayls.

7. The earphone according to any one of claims 1-6, characterized in that, The number of the sound collecting holes corresponds to the number of the microphones, and the sound collection area of the microphone is arranged closer to the connecting end than the sound outlet end of the sound collecting hole.

8. The earphone according to any one of claims 2-7, characterized in that, Along the length direction, the interval distance between the sound collection area of the microphone and the sound outlet end of the sound collecting hole is between 2 mm and 3 mm.

9. The earphone of claim 5 or 6, wherein, The inner wall of the core shell has an annular partition plate, the annular partition plate forms a communication groove, and the sound collecting hole communicates with the communication groove. The earphone comprises a circuit board and a sound guide seat, the sound guide seat is arranged on the side of the circuit board facing the communication groove, and is provided with a sound guide channel, the sound guide seat is embedded in the communication groove under the support of the circuit board, and the composite sound resistance net is pressed between the sound guide seat and the core shell, the microphone is arranged on the other side of the circuit board away from the communication groove, the circuit board is provided with a communication hole, and the microphone communicates with the sound hole through the communication hole and the sound guide channel.

10. The earphone according to any one of claims 1-9, characterized in that, The core shell has a length direction, a thickness direction and a width direction perpendicular to each other, the length direction is the interval direction of the connection end and the free end, the thickness direction is the direction towards or away from the auricle in the wearing state, the core shell comprises a first shell and a second shell, the first shell and the second shell are matched with each other along the thickness direction and form a first joint seam, in the wearing state, the first shell is farther away from the auricle than the second shell, the ear hook comprises an adapter, the adapter is connected with the second shell and forms a second joint seam, the outer surface of the second shell is provided with at least one installation slot in the shape of a long strip, the first joint seam, the long axis direction of the installation slot and the second joint seam are inclined in the same direction relative to the length direction.

11. The earphone of claim 10, wherein, The first shell has a first side wall, the second shell has a second side wall, the first side wall and the second side wall are arranged at intervals along the thickness direction, the second side wall is closer to the auricle than the first side wall in the wearing state, the first joint seam, the long axis direction of the installation slot and the second joint seam are all gradually away from the second side wall in the direction from the free end to the connection end.

12. The earphone according to claim 10 or 11, characterized in that, The minimum interval distance between the groove edge of the installation slot to the first joint seam or / and the groove edge of the installation slot to the second joint seam is between 1mm and 2mm.

13. The earphone according to any one of claims 10-12, characterized in that, The earphone further comprises a loudspeaker assembly arranged in the core shell, the loudspeaker assembly and the core shell form an acoustic front cavity and an acoustic back cavity; wherein the second shell is further provided with a pressure relief hole in the installation slot, the pressure relief hole communicates with the acoustic back cavity, the installation slot is provided with an acoustic net, the acoustic net covers the pressure relief hole, and the ratio between the area of the pressure relief hole and the area of the installation slot is between 0.2 and 0.7.

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