earphones

Abstract

To provide an earphone for improving sound quality.SOLUTION: An earphone 10 generates: a bone conduction sound in which mechanical vibration generated in a core module 11 is propagated mainly through a medium such as the skull of a user and an air conduction sound in which the mechanical vibration generated in the core module 11 is propagated mainly through a medium such as air. When the ear canal of the ear of the user is open without being blocked or shielded by the core module, the sound generated by the core module is mainly the bone conduction sound, and the air conduction sound enhances the bone conduction sound, thereby improving sound quality of the earphone 10.SELECTED DRAWING: Figure 12

Description

[Technical Field]

[0001] This application claims priority to a Chinese patent application filed with the State Intellectual Property Office of China on October 22, 2021, bearing application number 2021112326083 and entitled "Earphone," the entire contents of which are incorporated herein by reference.

[0002] This application relates to the field of electronics, and more particularly to earphones. [Background technology]

[0003] Earphones are widely used in people's daily lives, and can be used in conjunction with electronic devices such as mobile phones and computers to provide users with a feast of hearing. According to the operating principle of earphones, they are generally divided into air conduction earphones and bone conduction earphones, according to the way in which users wear the earphones, they are generally divided into headphones, ear-hook earphones and in-ear earphones, and according to the interaction method between the earphones and electronic devices, they are generally divided into wired earphones and wireless earphones. Summary of the Invention [Means for solving the problem]

[0004] In some embodiments, the earphones include a support assembly and a core module connected to the support assembly, the support assembly supporting the core module to be mounted in a wearing position, the core module including a core housing, an energy conversion device, and a vibration panel, the energy conversion device being installed in an accommodating cavity of the core housing, the vibration panel being connected to the energy conversion device and transmitting mechanical vibrations generated by the energy conversion device to a user.

[0005] In some embodiments, the core module includes a first vibration transmission sheet and a connecting member, the energy conversion device is suspended within the accommodating cavity of the core housing via the first vibration transmission sheet, the core housing includes an inner cylindrical wall and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall are located on opposite sides of the energy conversion device in the vibration direction of the energy conversion device, and together with the inner cylindrical wall, surround the accommodating cavity, a mounting hole is provided in the first end wall, the vibration panel is located outside the core housing and contacts the user's skin, one end of the connecting member is connected to the vibration panel and the other end is inserted into the core housing through the mounting hole and connected to the energy conversion device, when viewed from the vibration direction, the area of ​​the vibration panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0006] In some embodiments, the first vibration transmitting sheet is located within the receiving cavity.

[0007] In some embodiments, the first vibration-transmitting sheet is located on a side of the first end wall adjacent to the second end wall.

[0008] In some embodiments, the area of ​​the mounting hole is smaller than the area of ​​the first vibration-transmitting sheet when viewed from the vibration direction.

[0009] In some embodiments, the cross section of the inner cylinder wall when viewed from the vibration direction is any one of a circle, an ellipse, and a polygon.

[0010] In some embodiments, the receiving cavity communicates with the outside of the earphone only through a passage that is a gap between the connecting member and a wall surface of the mounting hole; Alternatively, the accommodating cavity communicates with the outside of the earphone only through a first passage that is a gap between the connecting member and a wall surface of the mounting hole, and a second passage that communicates with the outside of the earphone via an acoustic filter; Alternatively, the accommodating cavity communicates with the outside of the earphone only through a first passage, which is a gap between the connecting member and the wall surface of the mounting hole, and a second passage, the ratio of the opening area of ​​which to the opening area of ​​the first passage being 10% or less.

[0011] In some embodiments, the first end wall and the second end wall each have a Young's modulus of 2000 MPa or greater.

[0012] In some embodiments, the ratio of the area of ​​the mounting hole to the area of ​​the first end wall when viewed in the vibration direction is 0.6 or less.

[0013] In some embodiments, a gap between the connecting member and a wall surface of the mounting hole cooperates with the receiving cavity to form a Helmholtz resonant cavity, and the peak resonant frequency of the Helmholtz resonant cavity is 4 kHz or less.

[0014] In some embodiments, the peak resonant frequency of the Helmholtz resonant cavity is less than or equal to 1 kHz.

[0015] In some embodiments, a ratio of a difference between an area of ​​the mounting hole and an area of ​​the connection member to the area of ​​the mounting hole when viewed from the vibration direction is greater than 0 and equal to or less than 0.5.

[0016] In some embodiments, the opening shape of the mounting hole and the cross-sectional shape of the connecting member are corresponding polygonal shapes, or the opening shape of the mounting hole and the cross-sectional shape of the connecting member are corresponding circular shapes, The gap between the connection member and the wall surface of the mounting hole is greater than 0 mm and is equal to or smaller than 2 mm.

[0017] In some embodiments, the gap between the connection member and the wall surface of the mounting hole is not less than 0.1 mm and not more than 1 mm.

[0018] In some embodiments, the number of the connecting members is one, and the connecting member is connected to a central region of the diaphragm panel; Alternatively, the number of the connection members is plural, and the plurality of connection members are installed at intervals around a center line of the diaphragm panel that is parallel to the vibration direction, and each of the connection members is connected to the energy conversion device through a corresponding one of the mounting holes, Alternatively, the number of the connecting members may be multiple, one of which is connected to the central region of the diaphragm panel, and the remaining connecting members may be installed at intervals around the connecting member located in the central region of the diaphragm panel, and the multiple connecting members may each be connected to the energy conversion device through a corresponding one of the mounting holes.

[0019] In some embodiments, the diaphragm panel has a Young's modulus of 3000 MPa or greater.

[0020] In some embodiments, the ratio of the absolute value of the difference between the stiffness of the diaphragm panel and the stiffness of the first end wall to the larger of the stiffness of the diaphragm panel and the stiffness of the first end wall is 0.4 or less, and / or the ratio of the absolute value of the difference between the stiffness of the diaphragm panel and the stiffness of the second end wall to the larger of the stiffness of the diaphragm panel and the stiffness of the second end wall is 0.4 or less.

[0021] In some embodiments, the ratio of the area of ​​the diaphragm panel to the area of ​​the first end wall when viewed from the vibration direction is 0.3 to 1.6.

[0022] In some embodiments, the thickness of the diaphragm panel in the vibration direction is 0.3 mm to 3 mm, and / or the gap between the diaphragm panel and the first end wall is 0.5 mm to 3 mm, and / or the distance between the side of the first end wall away from the second end wall and the side of the second end wall away from the first end wall is 6 mm to 16 mm.

[0023] In some embodiments, the side of the diaphragm panel away from the energy conversion device includes a skin contact area that contacts the user's skin and an air conduction enhancement area, at least a portion of which is not in contact with the user's skin, and the diaphragm panel vibrates air outside the earphone using the air conduction enhancement area to form sound waves.

[0024] In some embodiments, when worn, the air conduction enhancing region is at least partially directed towards the entrance of the ear canal of the user's ear, thereby allowing the sound waves to be directed towards the entrance of the ear canal.

[0025] In some embodiments, the air conduction enhancement region is at least partially inclined with respect to the skin contact region and extends toward the energy conversion device, and the inclination angle with respect to the skin contact region is 0 to 75°; And / or the width of the orthogonal projection of the air conduction enhancing region along the vibration direction is 1 mm or more.

[0026] In some embodiments, the vibration panel has long and short axis directions that are perpendicular to the vibration direction and perpendicular to each other, the dimension of the vibration panel in the long axis direction is larger than the dimension of the vibration panel in the short axis direction, and when worn, the long axis direction is directed toward the top of the user's head and the short axis direction is directed toward the entrance of the ear canal of the user's ear.

[0027] In some embodiments, the diaphragm panels are arranged in an oval, rounded rectangular, or racetrack shape when viewed in the vibration direction.

[0028] In some embodiments, the core housing further includes an enclosing member connected to one end of the core housing closest to the vibration panel, the enclosing member enclosing the vibration panel, and in an unattached state, the enclosing member is positioned at a distance from the vibration panel in a direction perpendicular to the vibration direction, and the side of the vibration panel away from the energy conversion device at least partially protrudes from the side of the enclosing member away from the energy conversion device in the vibration direction.

[0029] In some embodiments, the surrounding member has a communication hole that connects the gap between the diaphragm panel and the core housing to the outside of the earphone.

[0030] In some embodiments, the number of the communication holes is multiple, and when the headset is worn, at least one of the communication holes has an opening direction away from the top of the user's head and an included angle of 0 to 10 degrees with respect to the user's vertical axis.

[0031] In some embodiments, a gasket is disposed between the diaphragm panel and the first end wall, and the Rockwell hardness of the gasket is lower than the Rockwell hardness of the first vibration transmitting sheet.

[0032] In some embodiments, the core module further includes an acoustic filter in communication with the accommodating cavity, the acoustic filter having a cutoff frequency of 5 kHz or less.

[0033] In some embodiments, the first end wall includes a first sub-end wall and a second sub-end wall spaced apart in the vibration direction, the mounting hole passes through the first sub-end wall and the second sub-end wall along the vibration direction, and the first sub-end wall and the second sub-end wall cooperate with the inner tube wall to form the acoustic filter.

[0034] In some embodiments, a gap between the first sub-end wall and the second sub-end wall in the vibration direction of the energy conversion device is 0.5 mm to 5 mm.

[0035] In some embodiments, the energy conversion device includes a bracket, a second vibration transmission sheet, a magnetic circuit system, and a coil, wherein the bracket is connected to the core housing via the first vibration transmission sheet, the second vibration transmission sheet connects the bracket and the magnetic circuit system so that the magnetic circuit system is suspended within the accommodating cavity, the coil is connected to the bracket and inserted into the magnetic gap of the magnetic circuit system along the vibration direction, and the vibration panel is connected to the bracket.

[0036] In some embodiments, the magnetic circuit system and / or the core housing is provided with a Helmholtz resonant cavity in communication with the accommodating cavity.

[0037] In some embodiments, a frequency response curve of the air-conducted sound output to the outside of the earphone through the mounting hole has a resonance peak, the Helmholtz resonant cavity is configured to weaken the intensity of the resonance peak, and the peak resonance frequency of the resonance peak is 500 Hz to 4 kHz.

[0038] In some embodiments, the Helmholtz resonant cavity is configured to attenuate vibration intensity within a predetermined frequency band of a frequency response curve of air-conducted sound output to the outside of the earphone through the mounting hole, and a difference between a peak value of the vibration intensity when an opening communicating between the Helmholtz resonant cavity and the housing cavity is in an open state and a peak value of the vibration intensity when the opening communicating between the Helmholtz resonant cavity and the housing cavity is in a closed state is 3 dB or more.

[0039] In some embodiments, the bracket is provided with a communication hole extending along the vibration direction, And / or, the magnetic circuit system includes a magnetically permeable cover and a magnet connected to the bottom of the magnetically permeable cover, the magnet is connected to the central region of the second vibration transmission sheet and is spaced apart from the magnetically permeable cover in a direction perpendicular to the vibration direction to form the magnetic gap, the coil is inserted between the magnet and the magnetically permeable cover, and the magnetically permeable cover has a communication hole that connects the magnetic gap with the external space of the magnetic circuit system.

[0040] In some embodiments, the volume of the core housing is 3 cm 3 The following is the result.

[0041] In some embodiments, the support assembly is configured as a head beam assembly that circumvents the top of the user's head and brings the core module into contact with the user's cheek via the vibration panel.

[0042] In some embodiments, the core module includes a connecting member, the energy conversion device is installed in an accommodating cavity of the core housing, a mounting hole is installed in the core housing, the vibration panel is located outside the core housing and contacts the user's skin, one end of the connecting member is connected to the vibration panel and the other end is inserted into the core housing through the mounting hole and connected to the energy conversion device, when viewed from the vibration direction, the area of ​​the vibration panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member, the receiving cavity communicates with the outside of the earphone only through a passage that is a gap between the connecting member and a wall surface of the mounting hole; Alternatively, the accommodating cavity communicates with the outside of the earphone only through a first passage, which is a gap between the connecting member and the wall surface of the mounting hole, and a second passage, which communicates with the outside of the earphone via an acoustic filter.

[0043] In some embodiments, the energy conversion device includes a bracket, a second vibration transmission sheet, a magnetic circuit system, and a coil, wherein the bracket is connected to the core housing via the first vibration transmission sheet, the second vibration transmission sheet connects the bracket and the magnetic circuit system so that the magnetic circuit system is suspended within the accommodating cavity, the coil is connected to the bracket and inserted into the magnetic gap of the magnetic circuit system along the vibration direction, the vibration panel is connected to the bracket, and the area of ​​the mounting hole is smaller than the area of ​​the first vibration transmission sheet when viewed from the vibration direction.

[0044] In some embodiments, a ratio of a difference between an area of ​​the mounting hole and an area of ​​the connection member to the area of ​​the mounting hole when viewed from the vibration direction is greater than 0 and equal to or less than 0.5.

[0045] In some embodiments, the core module includes a first vibration transmission sheet and a connecting member, the energy conversion device is suspended within an accommodating cavity of the core housing via the first vibration transmission sheet, the core housing has a mounting hole, the core housing is formed surrounding an accommodating cavity that communicates with the outside only through the mounting hole, the vibration panel is located outside the core housing and contacts the user's skin, the connecting member has one end connected to the vibration panel and the other end inserted into the core housing through the mounting hole and connected to the energy conversion device, and a gap between the connecting member and a wall surface of the mounting hole is greater than 0 and less than 2 mm.

[0046] In some embodiments, the gap between the connection member and the wall surface of the mounting hole is not less than 0.1 mm and not more than 1 mm.

[0047] In some embodiments, the energy conversion device includes a bracket, a second vibration transmission sheet, a magnetic circuit system, and a coil, wherein the bracket is connected to the core housing via the first vibration transmission sheet, the second vibration transmission sheet connects the bracket and the magnetic circuit system so that the magnetic circuit system is suspended within the accommodating cavity, the coil is connected to the bracket and inserted into the magnetic gap of the magnetic circuit system along the vibration direction, the vibration panel is connected to the bracket, and the area of ​​the mounting hole is smaller than the area of ​​the first vibration transmission sheet when viewed from the vibration direction.

[0048] In some embodiments, the core module includes a first vibration transmission sheet, the energy conversion device is suspended within the accommodating cavity of the core housing via the first vibration transmission sheet, the mass of the core housing is 1 g or more, and the stiffness of the first vibration transmission sheet is 7000 N / m or less.

[0049] In some embodiments, the mass of the core housing is 1.2 g or more, and the stiffness of the first vibration-transmitting sheet is 5000 N / m or less.

[0050] In some embodiments, the ratio of the mass of the core housing to the stiffness of the first vibration transmission sheet is 0.15s 2 That's all.

[0051] In some embodiments, the ratio of the mass of the core housing to the stiffness of the first vibration transmission sheet is 0.2 s 2 That's all.

[0052] In some embodiments, the energy conversion device includes a bracket, a second vibration transmission sheet, a magnetic circuit system, and a coil, the bracket is connected to the core housing via the first vibration transmission sheet, the second vibration transmission sheet connects the bracket and the magnetic circuit system so that the magnetic circuit system is suspended within the accommodating cavity, the coil is connected to the bracket and inserted into the magnetic gap of the magnetic circuit system along the vibration direction of the energy conversion device, and the vibration panel is connected to the bracket.

[0053] In some embodiments, the second vibration-transmitting sheet has a stiffness of 1000 N / m or more.

[0054] In some embodiments, in an unattached state, the vibration frequency response curve of the diaphragm panel has a resonance dip generated by the first vibration transmission sheet, and the peak resonance frequency of the resonance dip is 400 Hz or less.

[0055] In some embodiments, the frequency response curve has at least one resonance peak jointly generated by the first vibration-transmitting sheet and the second vibration-transmitting sheet within a frequency band range of 200 Hz to 2 kHz.

[0056] In some embodiments, the at least one resonant peak includes a first resonant peak and a second resonant peak, the peak resonant frequency of the first resonant peak is between 200 Hz and 400 Hz, and the peak resonant frequency of the second resonant peak is greater than the peak resonant frequency of the first resonant peak.

[0057] In some embodiments, when the rigidity of the first vibration transmission sheet changes, the absolute value of the offset amount of the peak resonance frequency of the second resonance peak is greater than the absolute value of the offset amount of the peak resonance frequency of the first resonance peak, and when the rigidity of the second vibration transmission sheet changes, the absolute value of the offset amount of the peak resonance frequency of the first resonance peak is greater than the absolute value of the offset amount of the peak resonance frequency of the second resonance peak.

[0058] In some embodiments, the core module further includes a connecting member, and the core housing includes an inner cylindrical wall and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall being located on opposite sides of the energy conversion device in the vibration direction of the energy conversion device, and forming, together with the inner cylindrical wall, the accommodating cavity surrounding the cavity, a mounting hole being provided in the first end wall, the vibration panel being located outside the core housing, the connecting member having one end connected to the vibration panel and the other end inserted into the core housing through the mounting hole and connected to the energy conversion device, and when viewed from the vibration direction, the area of ​​the vibration panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0059] In some embodiments, the core module includes a first vibration transmission sheet, the energy conversion device is suspended in the accommodating cavity of the core housing via the first vibration transmission sheet, and a ratio of the mass of the core housing to the stiffness of the first vibration transmission sheet is 0.15 s 2 That's all.

[0060] In some embodiments, the core module includes a first vibration transmission sheet, the energy conversion device is suspended within the accommodating cavity of the core housing via the first vibration transmission sheet, the mass of the core housing is 0.5 g or less, and the stiffness of the first vibration transmission sheet is 80,000 N / m or more.

[0061] In some embodiments, the energy conversion device includes a bracket, a second vibration transmission sheet, a magnetic circuit system, and a coil, the bracket is connected to the core housing via the first vibration transmission sheet, the second vibration transmission sheet connects the bracket and the magnetic circuit system so that the magnetic circuit system is suspended within the accommodating cavity, the coil is connected to the bracket and inserted into the magnetic gap of the magnetic circuit system along the vibration direction of the energy conversion device, and the vibration panel is connected to the bracket.

[0062] In some embodiments, the second vibration transmitting sheet has a peripheral region connected to the bracket and a central region connected to the magnetic circuit system.

[0063] In some embodiments, in an unattached state, the vibration frequency response curve of the diaphragm panel has a resonance dip generated by the first vibration transmission sheet, and the peak resonance frequency of the resonance dip is 2 kHz or higher.

[0064] In some embodiments, the frequency response curve has a first resonant peak and a second resonant peak jointly generated by the first vibration transmission sheet and the second vibration transmission sheet, and the peak resonant frequency of the first resonant peak is smaller than the peak resonant frequency of the resonant dip, and the peak resonant frequency of the second resonant peak is greater than the peak resonant frequency of the resonant dip.

[0065] In some embodiments, the peak resonant frequency of the first resonant peak is between 200 Hz and 400 Hz.

[0066] In some embodiments, the core module further includes a connecting member, and the core housing includes an inner cylindrical wall and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall being located on opposite sides of the energy conversion device in the vibration direction of the energy conversion device, and forming, together with the inner cylindrical wall, the accommodating cavity surrounding the cavity, a mounting hole being provided in the first end wall, the vibration panel being located outside the core housing, the connecting member having one end connected to the vibration panel and the other end inserted into the core housing through the mounting hole and connected to the energy conversion device, and when viewed from the vibration direction, the area of ​​the vibration panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0067] In some embodiments, the receiving cavity communicates with the outside of the earphone only through a passage that is a gap between the connecting member and a wall surface of the mounting hole; Alternatively, the accommodating cavity communicates with the outside of the earphone only through a first passage that is a gap between the connecting member and a wall surface of the mounting hole, and a second passage that communicates with the outside of the earphone via an acoustic filter, Alternatively, the housing cavity communicates with the outside of the earphone only through a first passage, which is a gap between the connecting member and the wall surface of the mounting hole, and a second passage, the ratio of the opening area of ​​the second passage to the opening area of ​​the first passage being 10% or less.

[0068] In some embodiments, the accommodating cavity communicates with the outside of the earphone through a passage that is a gap between the connecting member and a wall surface of the mounting hole, and the core module further includes a sealing membrane that seals the passage.

[0069] In some embodiments, the sealing membrane includes a first connecting portion, a corrugated portion, and a second connecting portion that are integrally connected, the corrugated portion forming a recessed area between the first connecting portion and the second connecting portion, the first connecting portion being connected to the first end wall, and the second connecting portion being connected to the connecting member or the diaphragm panel.

[0070] In some embodiments, the core module includes a first vibration transmission sheet, and the energy conversion device is suspended within the accommodating cavity of the core housing via the first vibration transmission sheet, and the core module is configured so that, when not attached, the frequency response curve of the vibration of the diaphragm panel has no effective resonance dip within a frequency band range of 400 Hz to 2 kHz, the frequency response curve represents the changing relationship between the vibration intensity and frequency of the diaphragm panel, the effective resonance dip is defined as having two intersections between the frequency response curve and a reference line segment parallel to the horizontal axis of the frequency response curve, the intensity corresponding to the reference line segment minus the peak resonance intensity of the effective resonance dip is 6 dB, and the difference in frequency corresponding to the end points of the reference line segment is four octaves or less.

[0071] In some embodiments, the mass of the core housing and / or the stiffness of the first vibration transmitting sheet are configured such that the frequency response curve does not have the effective resonance dip within a frequency band range of 400 Hz to 2 kHz.

[0072] In some embodiments, the energy conversion device includes a bracket, a second vibration transmission sheet, a magnetic circuit system, and a coil, the bracket is connected to the core housing via the first vibration transmission sheet, the second vibration transmission sheet connects the bracket and the magnetic circuit system so that the magnetic circuit system is suspended within the accommodating cavity, the coil is connected to the bracket and inserted into the magnetic gap of the magnetic circuit system along the vibration direction of the energy conversion device, and the vibration panel is connected to the bracket.

[0073] In some embodiments, the mass of the core housing and / or the stiffness of the first vibration transmitting sheet are configured such that the frequency response curve has the effective resonance dip within a frequency band range of 200 Hz to 400 Hz.

[0074] In some embodiments, the core housing has a mass of 1 g or more, and the first vibration-transmitting sheet has a stiffness of 7000 N / m or less.

[0075] In some embodiments, the frequency response curve has two resonance peaks jointly generated by the first vibration-transmitting sheet and the second vibration-transmitting sheet within a frequency band range of 400 Hz to 2 kHz.

[0076] In some embodiments, the second vibration-transmitting sheet has a stiffness of 1000 N / m or more.

[0077] In some embodiments, the mass of the core housing and / or the stiffness of the first vibration transmitting sheet are configured such that the frequency response curve has the effective resonance dip within a frequency band range of 2 kHz to 20 kHz.

[0078] In some embodiments, the core housing has a mass of 0.5 g or less, and the first vibration-transmitting sheet has a rigidity of 80,000 N / m or more.

[0079] In some embodiments, the mass of the core housing and / or the stiffness of the first vibration transmitting sheet are configured such that the frequency response curve does not have the effective resonance dip within a frequency band range of 200 Hz to 2 kHz.

[0080] In some embodiments, the mass of the core housing is 1 g or more, and the stiffness of the first vibration-transmitting sheet is 2500 N / m or less; Alternatively, the mass of the core housing is 0.5 g or less, and the rigidity of the first vibration transmitting sheet is 80,000 N / m or more.

[0081] In some embodiments, the mass of the core housing and / or the stiffness of the first vibration transmitting sheet are configured such that the frequency response curve does not have the effective resonance dip within a frequency band range of 200 Hz to 4 kHz.

[0082] In some embodiments, the core housing has a mass of 1 g or more, and the first vibration-transmitting sheet has a stiffness of 2500 N / m or less.

[0083] Alternatively, the mass of the core housing is 0.5 g or less, and the rigidity of the first vibration transmitting sheet is 160,000 N / m or more.

[0084] In some embodiments, the frequency response curve has at least one resonance peak jointly generated by the first vibration-transmitting sheet and the second vibration-transmitting sheet within a frequency band range of 200 Hz to 2 kHz.

[0085] In some embodiments, the mass of the core housing is 1 g or more, the stiffness of the first vibration transmission sheet is 2500 N / m or less, and the stiffness of the second vibration transmission sheet is 100000 N / m or less; Alternatively, the mass of the core housing is 0.5 g or less, the rigidity of the first vibration-transmitting sheet is 80,000 N / m or more, and the rigidity of the second vibration-transmitting sheet is 1,000 N / m to 500,000 N / m.

[0086] In some embodiments, the core module further includes a connecting member, and the core housing includes an inner cylindrical wall and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall being located on opposite sides of the energy conversion device in the vibration direction of the energy conversion device, and forming, together with the inner cylindrical wall, the accommodating cavity surrounding the cavity, a mounting hole being provided in the first end wall, the vibration panel being located outside the core housing, the connecting member having one end connected to the vibration panel and the other end inserted into the core housing through the mounting hole and connected to the energy conversion device, and when viewed from the vibration direction, the area of ​​the vibration panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0087] In some embodiments, the unworn state is defined as a state in which the earphone is not worn on a user's head, the support assembly is fixed, and the core module is cantilevered relative to the support assembly.

[0088] In some embodiments, the core module includes a first vibration transmission sheet, the energy conversion device is suspended in an accommodating cavity of the core housing via the first vibration transmission sheet, and includes a bracket, a second vibration transmission sheet, a magnetic circuit system, and a coil, the bracket is connected to the core housing via the first vibration transmission sheet, the second vibration transmission sheet connects the bracket and the magnetic circuit system such that the magnetic circuit system is suspended in the accommodating cavity, the coil is connected to the bracket and is inserted into a magnetic gap of the magnetic circuit system along a vibration direction of the energy conversion device, the vibration panel is connected to the bracket, and in an unattached state, The vibration frequency response curve of the diaphragm panel has a first resonance peak and a second resonance peak jointly generated by the first vibration transmission sheet and the second vibration transmission sheet, the peak resonance frequency of the first resonance peak is smaller than the peak resonance frequency of the second resonance peak, there is no effective resonance dip between the first resonance peak and the second resonance peak, the frequency response curve represents the change relationship between the vibration intensity and frequency of the diaphragm panel, the effective resonance dip is defined as having two intersections between the frequency response curve and a reference line segment parallel to the horizontal axis of the frequency response curve, the intensity corresponding to the reference line segment minus the peak resonance intensity of the effective resonance dip is 6 dB, and the difference in frequency corresponding to the end points of the reference line segment is four octaves or less.

[0089] In some embodiments, the mass of the core housing is 1 g or more, the stiffness of the first vibration-transmitting sheet is 7000 N / m or less, and the stiffness of the second vibration-transmitting sheet is 1000 N / m or more.

[0090] In some embodiments, the mass of the core housing is 1.2 g or more, the stiffness of the first vibration-transmitting sheet is 5000 N / m or less, and the stiffness of the second vibration-transmitting sheet is 3000 N / m or more.

[0091] In some embodiments, the second vibration-transmitting sheet has a stiffness greater than that of the first vibration-transmitting sheet.

[0092] In some embodiments, when the rigidity of the first vibration transmission sheet changes, the absolute value of the offset amount of the peak resonance frequency of the second resonance peak is greater than the absolute value of the offset amount of the peak resonance frequency of the first resonance peak, and when the rigidity of the second vibration transmission sheet changes, the absolute value of the offset amount of the peak resonance frequency of the first resonance peak is greater than the absolute value of the offset amount of the peak resonance frequency of the second resonance peak.

[0093] In some embodiments, the peak resonant frequency of the first resonant peak is between 80 Hz and 400 Hz, and the peak resonant frequency of the second resonant peak is between 100 Hz and 2 kHz.

[0094] In some embodiments, the second vibration transmitting sheet has a peripheral region connected to the bracket and a central region connected to the magnetic circuit system.

[0095] In some embodiments, the core module further includes a connecting member, and the core housing includes an inner cylindrical wall and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall being located on opposite sides of the energy conversion device in the vibration direction of the energy conversion device, and forming, together with the inner cylindrical wall, the accommodating cavity surrounding the cavity, a mounting hole being provided in the first end wall, the vibration panel being located outside the core housing, the connecting member having one end connected to the vibration panel and the other end inserted into the core housing through the mounting hole and connected to the energy conversion device, and when viewed from the vibration direction, the area of ​​the vibration panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0096] In some embodiments, the accommodating cavity communicates with the outside of the earphone only through a passage that is a gap between the connecting member and a wall surface of the mounting hole, and the core module further includes a sealing membrane that seals the passage.

[0097] In some embodiments, the sealing membrane includes a first connecting portion, a corrugated portion, and a second connecting portion that are integrally connected, the corrugated portion forming a recessed area between the first connecting portion and the second connecting portion, the first connecting portion being connected to the first end wall, and the second connecting portion being connected to the connecting member or the diaphragm panel.

[0098] In some embodiments, the core module includes a first vibration transmission sheet, the energy conversion device is suspended in the accommodating cavity of the core housing via the first vibration transmission sheet, and includes a bracket, a second vibration transmission sheet, a magnetic circuit system, and a coil, the bracket is connected to the core housing via the first vibration transmission sheet, the second vibration transmission sheet connects the bracket and the magnetic circuit system so that the magnetic circuit system is suspended in the accommodating cavity, the coil is connected to the bracket and inserted into the magnetic gap of the magnetic circuit system along the vibration direction of the energy conversion device, and the diaphragm is connected to the bracket, and in an unattached state, the vibration frequency response curve of the diaphragm panel has a resonance dip generated by the first vibration transmission sheet and a first resonance peak and a second resonance peak jointly generated by the first vibration transmission sheet and the second vibration transmission sheet, and the peak resonance frequency of the resonance dip is smaller than the peak resonance frequency of the first resonance peak, and the peak resonance frequency of the first resonance peak is smaller than the peak resonance frequency of the second resonance peak.

[0099] In some embodiments, the peak resonant frequency of the resonant dip is 400 Hz or greater.

[0100] In some embodiments, the core housing has a mass of 1 g or less, the first vibration-transmitting sheet has a stiffness of 7000 N / m or more, and the second vibration-transmitting sheet has a stiffness of 1000 N / m or more.

[0101] In some embodiments, the peak resonant frequency of the second resonant peak is less than or equal to 1 kHz.

[0102] In some embodiments, the core housing has a mass of 1 g or less, the first vibration-transmitting sheet has a rigidity of 7000 N / m or more, and the second vibration-transmitting sheet has a rigidity of 20000 N / m to 50000 N / m.

[0103] In some embodiments, the second vibration transmitting sheet has a peripheral region connected to the bracket and a central region connected to the magnetic circuit system.

[0104] In some embodiments, the core module further includes a connecting member, and the core housing includes an inner cylindrical wall and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall being located on opposite sides of the energy conversion device in the vibration direction of the energy conversion device, and forming, together with the inner cylindrical wall, the accommodating cavity surrounding the cavity, a mounting hole being provided in the first end wall, the vibration panel being located outside the core housing, the connecting member having one end connected to the vibration panel and the other end inserted into the core housing through the mounting hole and connected to the energy conversion device, and when viewed from the vibration direction, the area of ​​the vibration panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0105] In some embodiments, the receiving cavity communicates with the outside of the earphone only through a passage that is a gap between the connecting member and a wall surface of the mounting hole; Alternatively, the accommodating cavity communicates with the outside of the earphone only through a first passage that is a gap between the connecting member and a wall surface of the mounting hole, and a second passage that communicates with the outside of the earphone via an acoustic filter, Alternatively, the housing cavity communicates with the outside of the earphone only through a first passage, which is a gap between the connecting member and the wall surface of the mounting hole, and a second passage, the ratio of the opening area of ​​the second passage to the opening area of ​​the first passage being 10% or less.

[0106] In some embodiments, the accommodating cavity communicates with the outside of the earphone through a passage that is a gap between the connecting member and a wall surface of the mounting hole, and the core module further includes a sealing membrane that seals the passage.

[0107] In some embodiments, the sealing membrane includes a first connecting portion, a corrugated portion, and a second connecting portion that are integrally connected, the corrugated portion forming a recessed area between the first connecting portion and the second connecting portion, the first connecting portion being connected to the first end wall, and the second connecting portion being connected to the connecting member or the diaphragm panel.

[0108] In some embodiments, the core module includes a first vibration transmission sheet, the energy conversion device is suspended in the accommodating cavity of the core housing via the first vibration transmission sheet, and includes a bracket, a second vibration transmission sheet, a magnetic circuit system, and a coil, the bracket is connected to the core housing via the first vibration transmission sheet, the second vibration transmission sheet connects the bracket and the magnetic circuit system so that the magnetic circuit system is suspended in the accommodating cavity, the coil is connected to the bracket and inserted into the magnetic gap of the magnetic circuit system along the vibration direction of the energy conversion device, and the vibration panel is connected to the bracket, and in an unattached state, the vibration frequency response curve of the vibration panel has a resonance peak that is strongly correlated to the rigidity of the bracket, the rigidity of the bracket is 100,000 N / m or more, and the peak resonance frequency of the resonance peak is 4 kHz or more.

[0109] In some embodiments, the bracket is made of any one of polycarbonate, nylon, and plastic titanium; Alternatively, the bracket includes a base and a reinforcing member, the base being made of one of polycarbonate, nylon, and plastic titanium, and the reinforcing member being glass fiber or carbon fiber doped into the base, or the reinforcing member being aluminum alloy or stainless steel molded onto the base by a secondary injection molding process.

[0110] In some embodiments, the ratio of the average thickness of the bracket to the area of ​​the bracket is 0.01 mm -1 The area of ​​the bracket is defined as the area of ​​the orthogonal projection of the bracket along the vibration direction, and the average thickness of the bracket is defined as the volume of the bracket divided by the area of ​​the bracket.

[0111] In some embodiments, the mass of the core housing and / or the rigidity of the first vibration transmission sheet are configured so that the frequency response curve does not have an effective resonance dip within a frequency band range of 400 Hz to 2 kHz, the effective resonance dip is defined as having two intersections between the frequency response curve and a reference line segment parallel to the horizontal axis of the frequency response curve, the intensity corresponding to the reference line segment minus the peak resonance intensity of the effective resonance dip is 6 dB, and the difference in frequency corresponding to the two end points of the reference line segment is four octaves or less.

[0112] In some embodiments, the mass of the core housing and / or the stiffness of the first vibration transmitting sheet are configured such that the frequency response curve has the effective resonance dip within a frequency band range of 200 Hz to 400 Hz.

[0113] In some embodiments, the core housing has a mass of 1 g or more, and the first vibration-transmitting sheet has a stiffness of 7000 N / m or less.

[0114] In some embodiments, the frequency response curve has two resonance peaks jointly generated by the first vibration-transmitting sheet and the second vibration-transmitting sheet within a frequency band range of 400 Hz to 2 kHz.

[0115] In some embodiments, the second vibration-transmitting sheet has a stiffness of 1000 N / m or more.

[0116] In some embodiments, the core module further includes a connecting member, and the core housing includes an inner cylindrical wall and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall being located on opposite sides of the energy conversion device in the vibration direction of the energy conversion device, and forming, together with the inner cylindrical wall, the accommodating cavity surrounding the cavity, a mounting hole being provided in the first end wall, the vibration panel being located outside the core housing, the connecting member having one end connected to the vibration panel and the other end inserted into the core housing through the mounting hole and connected to the energy conversion device, and when viewed from the vibration direction, the area of ​​the vibration panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0117] In some embodiments, the receiving cavity communicates with the outside of the earphone only through a passage that is a gap between the connecting member and a wall surface of the mounting hole; Alternatively, the accommodating cavity communicates with the outside of the earphone only through a first passage that is a gap between the connecting member and a wall surface of the mounting hole, and a second passage that communicates with the outside of the earphone via an acoustic filter, Alternatively, the housing cavity communicates with the outside of the earphone only through a first passage, which is a gap between the connecting member and the wall surface of the mounting hole, and a second passage, the ratio of the opening area of ​​the second passage to the opening area of ​​the first passage being 10% or less.

[0118] In some embodiments, the support assembly is installed as a head beam assembly, the head beam assembly bypasses the top of the user's head and brings the core module into contact with the user's cheek, the core module transmits mechanical vibrations generated by the energy conversion device by bone conduction, the head beam assembly applies a pressing force of 0.4N to 0.8N to press the core module against the user's cheek, and the contact area between the core module and the user's cheek is 400mm 2 ~600mm 2 is.

[0119] In some embodiments, the core module further includes a first vibration transmission sheet, the core housing is connected to the head beam assembly, the energy conversion device is suspended within the accommodating cavity of the core housing via the first vibration transmission sheet, the vibration panel is connected to the energy conversion device and contacts the user's skin, the pressing force of the vibration panel against the user's cheek is smaller than the pressing force of the head beam assembly pressing the core module against the user's cheek, and the contact area between the vibration panel and the user's cheek is smaller than the contact area between the core module and the user's cheek.

[0120] In some embodiments, the pressing force of the vibration panel against the cheek of the user is 0.1 N to 0.7 N, and the contact area with the cheek of the user is 180 mm 2 ~300mm 2 is.

[0121] In some embodiments, the core module further includes an enclosing member connected to one end of the core housing adjacent to the vibration panel, the enclosing member surrounding the vibration panel and contacting the user's cheek, and in an unworn state, the enclosing member is positioned at a distance from the vibration panel in a direction perpendicular to the vibration direction of the energy conversion device, and the side of the vibration panel away from the energy conversion device at least partially protrudes from the side of the enclosing member away from the energy conversion device in the vibration direction.

[0122] In some embodiments, the side of the vibration panel away from the energy conversion device includes a skin contact area that contacts the user's skin and an edge area connected to the skin contact area, the edge area being located on the outer periphery of the skin contact area and spaced apart from the skin contact area in the vibration direction, the surrounding member including a connection portion connected to the core housing and a position limiting portion connected to the connection portion, the position limiting portion being located on the side of the vibration panel away from the energy conversion device, and when viewed from the vibration direction, the position limiting portion overlaps with the edge area and is offset from the skin contact area, and when not worn, the skin contact area protrudes from the side of the position limiting portion away from the energy conversion device in the vibration direction.

[0123] In some embodiments, the side of the diaphragm panel away from the energy conversion device further includes an air conduction enhancement region connected between the skin contact region and the edge region, at least a portion of the air conduction enhancement region not in contact with the user's skin, and the diaphragm panel vibrates the air outside the earphone by the air conduction enhancement region to form sound waves.

[0124] In some embodiments, when worn, the air conduction enhancing region is at least partially directed towards the entrance of the ear canal of the user's ear, thereby allowing the sound waves to be directed towards the entrance of the ear canal.

[0125] In some embodiments, at least a portion of the air conduction enhancing region is inclined with respect to the skin contact region, and the inclination angle with respect to the skin contact region is 0 to 75°; And / or the width of the orthogonal projection of the air conduction enhancing region along the vibration direction is 1 mm or more.

[0126] In some embodiments, the vibration panel has long and short axis directions that are perpendicular to the vibration direction and perpendicular to each other, the dimension of the vibration panel in the long axis direction is larger than the dimension of the vibration panel in the short axis direction, and when worn, the long axis direction is directed toward the top of the user's head and the short axis direction is directed toward the entrance of the ear canal of the user's ear.

[0127] In some embodiments, the surrounding member has a communication hole that connects the gap between the diaphragm and the core housing to the outside of the earphone, the number of the communication holes is multiple, the opening direction of at least one of the communication holes is away from the top of the user's head, and the included angle with the user's vertical axis is 0 to 10 degrees.

[0128] In some embodiments, the support assembly is configured as a head beam assembly, the head beam assembly including an arcuate head beam member and an adapter member, the arcuate head beam member bypassing the top of the user's head, both ends of the adapter member respectively connected to the arcuate head beam member and the core module, and allowing the core module to move closer to or farther away from the arcuate head beam member in the extension direction of the head beam assembly, the core module transmitting mechanical vibrations generated by the energy conversion device through bone conduction, and the head beam assembly applying a pressing force of 0.4N to 0.8N to press the core module against the user's cheek.

[0129] In some embodiments, the adapter member and the core module are installed on both ends of the arc-shaped head beam member, and the head beam assembly provides a first pressing force to the core module in a first use state and a second pressing force to the core module in a second use state, and an absolute value of a difference between the second pressing force and the first pressing force is 0 to 0.1 N; The first use state is defined as a use state in which each adapter member has a first extension amount relative to the arcuate head beam member and a first spacing between the two core modules, and the second use state is defined as a use state in which each adapter member has a second extension amount relative to the arcuate head beam member and a second spacing between the two core modules, the second extension amount being greater than the first extension amount and the second spacing being greater than the first spacing.

[0130] In some embodiments, the first extension amount is minimum when the core module is closest to the arcuate head beam member, and the second extension amount is maximum when the core module is farthest from the arcuate head beam member.

[0131] In some embodiments, when each of the core modules is closest to or farthest from the arcuate head beam member, the adapter members at both ends of the arcuate head beam member are installed symmetrically with respect to a first reference plane, a second reference plane passes through a line connecting both ends of the arcuate head beam member and perpendicularly intersects with the first reference plane, the arcuate head beam member is in a natural state, and the arcuate head beam member and the adapter members are projected onto the second reference plane, and the core modules are located at the arcuate head beam member. a free end of the adapter member connected to the core module has a first position when the adapter member is closest to the core module, and a free end of the adapter member has a second position when the core module is farthest from the arcuate head beam member, a line connecting the first position and the second position has a first projection component in a first reference direction parallel to a line connecting both ends of the arcuate head beam member and a second projection component in a second reference direction perpendicular to the line connecting both ends of the arcuate head beam member, and a ratio of the second projection component to the first projection component is 2 or more; and / or the ratio of the cross-sectional bending stiffness of the adapter member to the cross-sectional bending stiffness of the arcuate head beam member is 0.9 or less.

[0132] In some embodiments, the earphone further includes an adapter housing rotatably connected to an end of the adapter member remote from the arcuate head beam member, the core module further includes a core housing rotatably connected to the adapter housing, the energy transforming device is located within a receiving cavity of the core housing, and an axis about which the core housing rotates relative to the adapter housing intersects an axis about which the adapter housing rotates relative to the adapter member.

[0133] In some embodiments, a rotary shaft cavity is provided in the adapter housing, the adapter member is inserted into the rotary shaft cavity along the axial direction of the rotary shaft cavity, the earphone further includes a locking member that limits the position of the adapter member along the axial direction of the rotary shaft cavity so that the adapter member is held within the rotary shaft cavity, a position limiting groove is formed on an outer peripheral wall of the adapter member, and a position limiting block is provided on an inner peripheral wall of the rotary shaft cavity, the position limiting block being fitted into the position limiting groove to limit the rotation angle of the adapter member relative to the rotary shaft cavity.

[0134] In some embodiments, a locking groove is provided at the free end of the adapter member, and after the adapter member is inserted into the rotating shaft cavity from one end of the rotating shaft cavity, the locking groove is exposed from the other end of the rotating shaft cavity, and the locking member is locked in the locking groove, and the radial dimension of the locking member is larger than the radial dimension of the rotating shaft cavity.

[0135] In some embodiments, the rotation angle is between 5° and 15°.

[0136] In some embodiments, the earphone further includes a battery and a motherboard coupled to the energy transformation device, the adapter housing includes a midplate rotatably connected to the adapter member and a case connected to the midplate, the battery or the motherboard is located between the case and the midplate, and the core housing is rotatably connected to the adapter housing and is located on a side of the midplate away from the case.

[0137] In some embodiments, the core module further includes a first vibration transmission sheet and a vibration panel, the energy conversion device is suspended within the accommodating cavity of the core housing via the first vibration transmission sheet, the vibration panel is connected to the energy conversion device and contacts the user's skin, the pressing force of the vibration panel against the user's cheek is smaller than the pressing force of the head beam assembly pressing the core module against the user's cheek, and the contact area between the vibration panel and the user's cheek is smaller than the contact area between the core module and the user's cheek.

[0138] In some embodiments, the support assembly is configured as a head beam assembly, and the earphones include an adapter housing rotatably connected to the head beam assembly, a core module connected to the adapter housing, and a battery and a motherboard coupled to the core module, the head beam assembly bypassing the top of the user's head and bringing the core module into contact with the user's cheek, the adapter housing includes a mid-plate rotatably connected to the head beam assembly and a case connected to the mid-plate, the battery or the motherboard is installed between the case and the mid-plate, and the core module includes a core housing rotatably connected to the adapter housing and an energy conversion device installed in an accommodating cavity of the core housing, the core housing and the case are located on opposite sides of the mid-plate, respectively.

[0139] In some embodiments, the core housing rotates about a first axis relative to the adapter housing, and the adapter housing rotates about a second axis relative to the head beam assembly, and the first axis and the second axis intersect in a reference plane perpendicular to a vibration direction of the energy conversion device.

[0140] In some embodiments, the core module further includes a first vibration transmission sheet and a vibration panel, the energy conversion device is suspended within the accommodating cavity of the core housing via the first vibration transmission sheet, and the vibration panel is connected to the energy conversion device and contacts the user's skin.

[0141] In some embodiments, the core module further includes a connecting member, and the core housing includes an inner cylindrical wall connected to the adapter housing, and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall being located on opposite sides of the energy conversion device in the vibration direction of the energy conversion device, and forming, together with the inner cylindrical wall, the accommodating cavity surrounding the accommodating cavity, a mounting hole being provided in the first end wall, the vibration panel being located outside the core housing, the connecting member having one end connected to the vibration panel and the other end inserted into the core housing through the mounting hole and connected to the energy conversion device, and when viewed from the vibration direction, the area of ​​the vibration panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0142] In some embodiments, the ratio of the area of ​​the mounting hole to the area of ​​the first end wall when viewed in the vibration direction is 0.6 or less.

[0143] In some embodiments, a ratio of a difference between an area of ​​the mounting hole and an area of ​​the connection member to the area of ​​the mounting hole when viewed from the vibration direction is greater than 0 and equal to or less than 0.5.

[0144] In some embodiments, the side of the vibration panel away from the energy conversion device includes a skin contact area that contacts the user's skin and an edge area connected to the skin contact area, the edge area being located on the outer periphery of the skin contact area and spaced apart from the skin contact area in the vibration direction of the energy conversion device, the core module further includes an enclosing member connected to one end of the inner tube wall away from the second end wall, the enclosing member including a connecting portion connected to the inner tube wall and a position limiting portion connected to the connecting portion, the position limiting portion being located on the side of the vibration panel away from the energy conversion device, the position limiting portion overlapping the edge area and misaligned with the skin contact area when viewed from the vibration direction, and when not worn, the skin contact area protrudes from the side of the position limiting portion away from the energy conversion device in the vibration direction.

[0145] In some embodiments, the side of the diaphragm panel away from the energy conversion device further includes an air conduction enhancement region connected between the skin contact region and the edge region, at least a portion of the air conduction enhancement region not in contact with the user's skin, and the diaphragm panel vibrates the air outside the earphone by the air conduction enhancement region to form sound waves.

[0146] In some embodiments, at least a portion of the air conduction enhancing region is inclined with respect to the skin contact region, and the inclination angle with respect to the skin contact region is 0 to 75°; And / or the width of the orthogonal projection of the air conduction enhancing region along the vibration direction is 1 mm or more.

[0147] In some embodiments, the head beam assembly includes an arcuate head beam member and an adapter member, the arcuate head beam member bypassing the top of the user's head, the adapter member including a first connecting portion, an intermediate transition portion and a second connecting portion connected in sequence, the first connecting portion being connected to the arcuate head beam member and the second connecting portion being rotatably connected to the mid-plate, the first connecting portion and the second connecting portion being respectively bent relative to the intermediate transition portion and extending in opposite directions, so that in a worn state, when viewed from a direction in which the coronary axis of the human body is located, the arcuate head beam member is located above the user's ears and the core module is located in front of the user's ears.

[0148] In some embodiments, the bending angle of the first connecting portion relative to the intermediate transition portion is greater than or equal to 90° and less than 180°, and / or the bending angle of the second connecting portion relative to the intermediate transition portion is greater than or equal to 90° and less than 180°.

[0149] In some embodiments, when worn, the first connecting portion is parallel to the second connecting portion when viewed from the direction in which the coronary axis of the human body is located, and the distance between the first connecting portion and the second connecting portion is 20 mm to 30 mm.

[0150] In some embodiments, the earphone includes an adapter housing, and the core module includes a core housing rotatably connected to the adapter housing, an energy conversion device installed in an accommodating cavity of the core housing, and an enclosing member connected to one end of the core housing remote from the adapter housing, the enclosing member including a connecting portion connected to the core housing and a flange portion connected to the connecting portion, and when viewed from the vibration direction of the energy conversion device, the flange portion is located on the outer periphery of the core housing and overlaps with the adapter housing, and in an unworn state, a gap between the flange portion and the adapter housing in the vibration direction gradually increases along a reference direction defined as a direction perpendicular to the vibration direction and a direction in which the axis is located and away from the axis.

[0151] In some embodiments, the maximum gap between the flange portion and the adapter housing in the vibration direction is 2 mm to 5 mm.

[0152] In some embodiments, when viewed from the direction in which the axis is located, the flange portion is disposed so that the side facing the adapter housing has an arc shape.

[0153] In some embodiments, the arc radius of the flange portion on the side facing the adapter housing is 50 mm or greater.

[0154] In some embodiments, the core module further includes a first vibration transmission sheet and a vibration panel, the energy conversion device is suspended within the accommodating cavity of the core housing via the first vibration transmission sheet, the vibration panel is connected to the energy conversion device and contacts the user's skin, the surrounding member surrounds the vibration panel, and in an unworn state, the surrounding member is positioned at a distance from the vibration panel in a direction perpendicular to the vibration direction, and the side of the vibration panel away from the energy conversion device at least partially protrudes from the side of the surrounding member away from the energy conversion device in the vibration direction.

[0155] In some embodiments, the side of the vibration panel away from the energy conversion device includes a skin contact area that contacts the user's skin and an edge area connected to the skin contact area, the edge area being located on the outer periphery of the skin contact area and spaced apart from the skin contact area in the vibration direction, the surrounding member further including a position limiting portion connected to the connection portion, the position limiting portion being located on the side of the vibration panel away from the energy conversion device, and when viewed from the vibration direction, the position limiting portion overlaps with the edge area and is offset from the skin contact area, and when not worn, the skin contact area protrudes from the side of the position limiting portion away from the energy conversion device in the vibration direction.

[0156] In some embodiments, the side of the diaphragm panel away from the energy conversion device further includes an air conduction enhancement region connected between the skin contact region and the edge region, at least a portion of the air conduction enhancement region not in contact with the user's skin, and the diaphragm panel vibrates the air outside the earphone by the air conduction enhancement region to form sound waves.

[0157] In some embodiments, at least a portion of the air conduction enhancing region is inclined with respect to the skin contact region, and the inclination angle with respect to the skin contact region is 0 to 75°; And / or the width of the orthogonal projection of the air conduction enhancing region along the vibration direction is 1 mm or more.

[0158] In some embodiments, the earphones further include a head beam assembly connected to the adapter housing, the head beam assembly bypassing the top of the user's head and bringing the core module into contact with the user's cheek, the head beam assembly including an arcuate head beam member and an adapter member, the arcuate head beam member bypassing the top of the user's head, the adapter member including a first connecting portion, an intermediate transition portion, and a second connecting portion connected in sequence, the first connecting portion being connected to the arcuate head beam member and the second connecting portion being connected to the adapter housing, the first connecting portion and the second connecting portion being respectively bent relative to the intermediate transition portion and extending in opposite directions, so that in a worn state, when viewed from a direction in which the coronal axis of the human body is located, the arcuate head beam member is located above the user's ear portion and the core module is located in front of the user's ear portion.

[0159] In some embodiments, the bending angle of the first connecting portion relative to the intermediate transition portion is greater than or equal to 90° and less than 180°, and / or the bending angle of the second connecting portion relative to the intermediate transition portion is greater than or equal to 90° and less than 180°.

[0160] In some embodiments, when worn, the first connecting portion is parallel to the second connecting portion when viewed from the direction in which the coronary axis of the human body is located, and the distance between the first connecting portion and the second connecting portion is 20 mm to 30 mm.

[0161] In some embodiments, the earphone includes an adapter housing, the adapter housing including a cylindrical sidewall, the cylindrical sidewall being located on an outer periphery of the core module, the core module including a core housing and an energy conversion device installed in an accommodating cavity of the core housing, the core housing including a first core housing, the first core housing including an inner cylindrical wall and an outer cylindrical wall, the inner cylindrical wall being located on an outer periphery of the energy conversion device, the outer cylindrical wall being located on an outer periphery of the inner cylindrical wall and installed at a distance from the inner cylindrical wall in a direction perpendicular to the vibration direction of the energy conversion device, one of the outer cylindrical wall and the cylindrical sidewall being provided with an axial hole, and the other being provided with a rotation shaft that engages with the axial hole, the rotation shaft being fitted into the axial hole to allow the core housing to rotate relative to the adapter housing.

[0162] In some embodiments, the first core housing further includes a reinforcing pillar connected between the outer cylindrical wall and the inner cylindrical wall, the rotation axis being installed on the side of the cylindrical side wall facing the outer cylindrical wall, and the axial hole being installed in the reinforcing pillar.

[0163] In some embodiments, the first core housing further includes a transition wall and a cover plate connected between the inner and outer cylindrical walls, the cover plate and the transition wall being spaced apart in the vibration direction and forming a Helmholtz resonant cavity together with the outer cylindrical wall, the inner cylindrical wall and the transition wall, the Helmholtz resonant cavity being in communication with the accommodating cavity so that air in the accommodating cavity absorbs acoustic energy of sound waves generated by vibration of the energy conversion device.

[0164] In some embodiments, the frequency response curve of the sound wave has a resonant peak, the peak resonant frequency of the resonant peak is 500 Hz to 4 kHz, and the difference between the peak resonant intensity of the resonant peak when the opening connecting the Helmholtz resonant cavity and the accommodating cavity is in an open state and the peak resonant intensity of the resonant peak when the opening connecting the Helmholtz resonant cavity and the accommodating cavity is in a closed state is 3 dB or more.

[0165] In some embodiments, the first core housing further includes an end wall and a transition wall, the end wall is connected to one end of the inner cylindrical wall and surrounds the accommodating cavity, the transition wall is connected between the inner cylindrical wall and the outer cylindrical wall, the adapter housing further includes a mid-plate connected to the cylindrical side wall, the mid-plate is located on a side of the end wall away from the accommodating cavity, the end wall, the inner cylindrical wall, the transition wall and the outer cylindrical wall, together with the mid-plate and the cylindrical side wall, form an acoustic filter surrounding the acoustic filter, the acoustic filter is in communication with the accommodating cavity, and the air in the accommodating cavity absorbs acoustic energy of sound waves generated by vibration of the energy conversion device, and after being absorbed by the acoustic filter, the sound waves are transmitted to the outside of the earphone through a gap between the cylindrical side wall and the outer cylindrical wall.

[0166] In some embodiments, the cutoff frequency of the acoustic filter is 5 kHz or less.

[0167] In some embodiments, the gap between the transition wall and the middle plate in the vibration direction and the gap between the inner tube wall and the outer tube wall in a direction perpendicular to the vibration direction are both larger than the gap between the cylindrical side wall and the outer tube wall in a direction perpendicular to the vibration direction.

[0168] In some embodiments, the earphone further includes a battery and a motherboard coupled to the energy conversion device, and the adapter housing further includes a case connected to the cylindrical side wall, and the battery or the motherboard is located on the side of the case facing the energy conversion device.

[0169] In some embodiments, the earphone further includes a function assembly disposed in the case and coupled to the battery and the motherboard, the function assembly including a first circuit board, a second circuit board, an encoder, a tactile switch, and a function key, the first circuit board and the second circuit board are disposed in a stacked manner, the encoder is disposed on the first circuit board, the tactile switch is disposed on the second circuit board and is located on a side of the second circuit board facing the first circuit board, the function key is a key top and a a key rod connected to a keycap, the keycap being located on a side of the first circuit board away from the second circuit board, the free end of the key rod away from the keycap being installed directly facing the tactile switch, the encoder being fitted to the key rod, so that when a user rotates the key rod via the keycap, the key rod moves the encoder to generate a first input signal, and when a user presses the key rod via the keycap, the key rod triggers the tactile switch to generate a second input signal.

[0170] In some embodiments, the first input signal controls volume up / down of the earphones, and / or the second input signal controls one of play / pause, next, device pairing, and power on / off of the earphones.

[0171] In some embodiments, the earphone further includes a sound pickup assembly and a switch assembly, the sound pickup assembly including a pivotal connection block, a connecting rod, and a sound pickup, the pivotal connection block is pivotally attached to the case, one end of the connecting rod is connected to the pivotal connection block, the sound pickup is located at the other end of the connecting rod, a recessed area is located on a side of the pivotal connection block away from the housing, and the switch assembly is located in the recessed area.

[0172] In some embodiments, a boss is installed at the bottom of the recessed area, and an annular groove is formed between the outer peripheral wall of the boss and the side wall of the recessed area. The switch assembly includes a switch circuit board, an elastic support member, a reinforcing ring, and a key. The switch circuit board is installed on the top of the boss. The elastic support member includes an annular fixing portion and an elastic support member that are integrally installed. The reinforcing ring is backed by the annular fixing portion along the circumferential direction of the annular fixing portion. The annular fixing portion is fixed in the annular groove via the reinforcing ring. The elastic support member is installed in a dome shape. The key is installed on the elastic support member.

[0173] In some embodiments, the core module includes a first vibration transmission sheet and a connecting member, the energy conversion device is suspended within the accommodating cavity of the core housing via the first vibration transmission sheet, the core housing includes a first core housing, a second core housing, and an enclosing member, the first core housing includes an inner cylindrical wall and a first outer cylindrical wall, the inner cylindrical wall is located on the outer periphery of the energy conversion device, the first outer cylindrical wall is located on the outer periphery of the inner cylindrical wall and is installed at a distance from the inner cylindrical wall in a direction perpendicular to the vibration direction of the energy conversion device, the second core housing is connected to the inner cylindrical wall and has a mounting hole, the vibration panel is located outside the core housing and contacts the user's skin, the connecting member has one end connected to the vibration panel and the other end inserted into the core housing through the mounting hole and connected to the energy conversion device, and the enclosing member is connected to the first outer cylindrical wall and surrounds the vibration panel.

[0174] In some embodiments, the second core housing includes a first end wall and a first cylindrical side wall connected to the first end wall, the first cylindrical side wall being positioned between an inner cylindrical wall and the first outer cylindrical wall and being engaged with the inner cylindrical wall, and the mounting hole being located in the first end wall.

[0175] In some embodiments, the second core housing presses the peripheral area of ​​the first vibration transmitting sheet against the inner cylinder wall.

[0176] In some embodiments, the side of the vibration panel away from the energy conversion device includes a skin contact area that contacts the user's skin and an edge area connected to the skin contact area, the edge area being located on the outer periphery of the skin contact area and spaced apart from the skin contact area in the vibration direction, the surrounding member including a connecting portion engaged with the first outer tube wall and a position limiting portion connected to the connecting portion, the connecting portion being tubularly installed and located on the outer periphery of the first outer tube wall, the position limiting portion being located on the side of the vibration panel away from the energy conversion device, the position limiting portion overlapping with the edge area and misaligned with the skin contact area when viewed from the vibration direction, and when not worn, the skin contact area protrudes on the side of the position limiting portion away from the energy conversion device in the vibration direction.

[0177] In some embodiments, the side of the diaphragm panel away from the energy conversion device further includes an air conduction enhancement region connected between the skin contact region and the edge region, at least a portion of the air conduction enhancement region not in contact with the user's skin, and the diaphragm panel vibrates the air outside the earphone by the air conduction enhancement region to form sound waves.

[0178] In some embodiments, at least a portion of the air conduction enhancing region is inclined with respect to the skin contact region, and the inclination angle with respect to the skin contact region is 0 to 75°; And / or the width of the orthogonal projection of the air conduction enhancing region along the vibration direction is 1 mm or more.

[0179] In some embodiments, the earphone further includes an adapter housing rotatably connected to the core housing, and the surrounding member further includes a flange portion connected to the connection portion, at least a portion of the flange portion being spaced apart from the adapter housing in the vibration direction, and the flange portion being located on the outer periphery of the first outer tube wall and overlapping with the adapter housing as viewed in the vibration direction.

[0180] In some embodiments, in an unattached state, the gap between the flange portion and the adapter housing in the vibration direction gradually increases along a reference direction defined as a direction perpendicular to the vibration direction and the direction in which the axis is located, and away from the axis, starting from the axis about which the core housing rotates relative to the adapter housing.

[0181] In some embodiments, the maximum gap between the flange portion and the adapter housing in the vibration direction is 2 mm to 5 mm.

[0182] In some embodiments, when viewed from the direction in which the axis is located, the flange portion is disposed so that the side facing the adapter housing has an arc shape.

[0183] In some embodiments, the first core housing further includes a second outer cylindrical wall and a reinforcing pillar, the second outer cylindrical wall being located on the outer periphery of the inner cylindrical wall and spaced apart from the inner cylindrical wall in a direction perpendicular to the vibration direction of the energy conversion device, the second outer cylindrical wall extending in the opposite direction to the first outer cylindrical wall, the reinforcing pillar connecting the second outer cylindrical wall and the inner cylindrical wall, the adapter housing including a second cylindrical side wall being located on the outer periphery of the second outer cylindrical wall, an axial hole being provided in one of the reinforcing pillar and the second cylindrical side wall, and a rotating shaft engaging with the axial hole being provided in the other, the rotating shaft being fitted into the axial hole to allow the core housing to rotate relative to the adapter housing.

[0184] In some embodiments, the first core housing further includes a transition wall and a cover plate connected between the inner cylindrical wall and the second outer cylindrical wall, the cover plate and the transition wall being spaced apart in the vibration direction and forming a Helmholtz resonant cavity together with the second outer cylindrical wall and the inner cylindrical wall, the Helmholtz resonant cavity being in communication with the accommodating cavity, and the air in the accommodating cavity absorbing acoustic energy of sound waves generated by vibration of the energy conversion device.

[0185] In some embodiments, when viewed from the vibration direction, the second outer cylindrical wall is located on the outer periphery of the first outer cylindrical wall and is located inside the flange portion so as to allow the flange portion to overlap with the second cylindrical side wall.

[0186] In some embodiments, the transition wall includes a first sub-transition wall and a second sub-transition wall, the first sub-transition wall connecting the inner cylinder wall and the first outer cylinder wall, the second sub-transition wall connecting the first outer cylinder wall and the second outer cylinder wall, the second sub-transition wall and the first sub-transition wall being spaced apart in the vibration direction, and the second sub-transition wall being closer to the vibration panel than the first sub-transition wall.

[0187] In some embodiments, the earphone includes a connecting wire assembly, the connecting wire assembly including a conductive wire and an auxiliary wire connected to the conductive wire, the conductive wire elastically deforming the auxiliary wire when pulled and deformed by an external force, and the auxiliary wire providing an elastic restoring force that returns the conductive wire to its original shape after the external force is released.

[0188] In some embodiments, the conductor is divided into an elastic portion and a natural portion located at both ends of the elastic portion, and the elastic modulus of the elastic portion is between the elastic modulus of the natural portion and the elastic modulus of the auxiliary line.

[0189] In some embodiments, the elastic portion is a portion where the conducting wire extends in a spiral shape around at least a portion of the auxiliary wire.

[0190] In some embodiments, in a natural state, the ratio of the length of the stretchable portion to the length of the conducting wire is 0.1 to 0.5.

[0191] In some embodiments, the auxiliary line includes an elastic body and collars located at both ends of the elastic body, and each collar is fitted onto the corresponding natural portion and is stopped by a position limiting structure of the natural portion in the restoration direction of the stretchable portion.

[0192] In some embodiments, the position limiting structure is a protrusion integrally connected to the insulating layer of the conductor, or a bump formed by connecting the natural portions.

[0193] In some embodiments, the support assembly is installed as a head beam assembly, the head beam assembly including an arcuate head beam member, an adapter member, and the connection wire assembly, the arcuate head beam member bypassing the top of the user's head, both ends of the adapter member respectively connected to the arcuate head beam member and the core module, the core module being capable of being retracted and retracted relative to the arcuate head beam member by an external force to allow the core module to move closer to or away from the arcuate head beam member in the extension direction of the head beam assembly, the connection wire assembly extending along the arcuate head beam member and extending as the adapter member retracts or restoring as the adapter member retracts, and the conductor is electrically connected to the core module.

[0194] In some embodiments, the conductor is divided into a flexible portion and a natural portion located at both ends of the flexible portion, and an intermediate region of the flexible portion is fixed to the arcuate head beam member.

[0195] In some embodiments, the head beam assembly further includes a pressing member engaged with the arcuate head beam member, the pressing member pressing an intermediate region of the telescopic portion against the arcuate head beam member.

[0196] In some embodiments, the pressing member includes a pressing portion and locking portions located at both ends of the pressing portion, each locking portion being bent toward the pressing portion, the sides of the two locking portions facing the pressing portions extending in the same direction and able to approach each other under external force, the pressing portion pressing against an intermediate region of the telescopic portion, and the locking portions being locked with the arc-shaped head beam member.

[0197] In some embodiments, the core module includes a first vibration transmission sheet, the energy conversion device is suspended within the accommodating cavity of the core housing via the first vibration transmission sheet, and includes a bracket, a second vibration transmission sheet, a magnetic circuit system, and a coil, the bracket is connected to the core housing via the first vibration transmission sheet, the second vibration transmission sheet is connected to the first vibration transmission sheet via the bracket, the magnetic circuit system is connected to a central region of the second vibration transmission sheet so as to be suspended within the accommodating cavity, the coil is inserted into the magnetic gap of the magnetic circuit system along the vibration direction of the energy conversion device, the magnetic gap surrounds the position where the magnetic circuit system and the second vibration transmission sheet are connected, and the vibration panel is connected to the bracket.

[0198] In some embodiments, the magnetic circuit system includes a magnetically permeable cover and a magnet connected to the bottom of the magnetically permeable cover, the magnet being connected to a central region of the second vibration transmission sheet and spaced apart from a side wall of the magnetically permeable cover in a direction perpendicular to the vibration direction to form the magnetic gap, and the side wall of the magnetically permeable cover being spaced apart from the second vibration transmission sheet in the vibration direction to form a passage connecting the magnetic gap to the outside of the magnetic circuit system.

[0199] In some embodiments, the magnet includes a first magnetic member, a permeable member, and a second magnetic member stacked along the vibration direction, the second magnetic member is closer to the second vibration transmission sheet than the first magnetic member, the magnetization directions of the first magnetic member and the second magnetic member are different, and the side wall of the permeable cover overlaps with at least the permeable member when projected orthogonally onto the outer peripheral surface of the magnet along a direction perpendicular to the vibration direction.

[0200] In some embodiments, the coil overlaps at least the magnetically permeable member when orthogonally projected onto the outer circumferential surface of the magnet along a direction perpendicular to the vibration direction.

[0201] In some embodiments, the bracket includes a first bracket and a second bracket, the first bracket is connected to a central region of the first vibration-transmitting sheet, the second bracket is connected to a peripheral region of the second vibration-transmitting sheet, the second bracket and the vibration panel are each connected to the first bracket, and the coil is connected to the second bracket.

[0202] In some embodiments, the energy conversion device further includes a suspension, the suspension connected to a central region of the second vibration transmission sheet, the second bracket located on the outer periphery of the suspension and spaced apart from the suspension in a direction perpendicular to the vibration direction, and the magnetic circuit system connected to the suspension.

[0203] In some embodiments, the first bracket and the first vibration transmission sheet are integrally molded by a metal insert injection molding process, the second bracket and the second vibration transmission sheet are integrally molded by a metal insert injection molding process, one of the first bracket and the second bracket has an insertion hole, and the other has an insertion post fitted into the insertion hole, and the insertion post is inserted into the insertion hole.

[0204] In some embodiments, the core housing includes an inner cylindrical wall and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall being located on opposite sides of the energy conversion device in the vibration direction and forming, together with the inner cylindrical wall, the accommodating cavity surrounding the accommodating cavity, a mounting hole being provided in the first end wall, the vibration panel being located outside the core housing, the core module further including a connecting member, one end of the connecting member being connected to the vibration panel and the other end being inserted into the core housing through the mounting hole and connected to the bracket, and when viewed from the vibration direction, the area of ​​the vibration panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0205] In some embodiments, the receiving cavity communicates with the outside of the core module only through a passage that is a gap between the connecting member and a wall surface of the mounting hole; Alternatively, the accommodating cavity communicates with the outside of the core module only through a first passage, which is a gap between the connecting member and the wall surface of the mounting hole, and a second passage, which communicates with the outside of the core module via an acoustic filter; Alternatively, the accommodating cavity communicates with the outside of the core module only through a first passage, which is a gap between the connecting member and the wall surface of the mounting hole, and a second passage, the ratio of the opening area of ​​which to the opening area of ​​the first passage being 10% or less.

[0206] In some embodiments, the accommodating cavity communicates with the outside of the core module through a passage that is a gap between the connecting member and the wall surface of the mounting hole, and the core module further includes a sealing membrane that seals the passage.

[0207] In some embodiments, the sealing membrane includes a first connecting portion, a corrugated portion, and a second connecting portion that are integrally connected, the corrugated portion forming a recessed area between the first connecting portion and the second connecting portion, the first connecting portion being connected to the first end wall, and the second connecting portion being connected to the connecting member or the diaphragm panel.

[0208] In some embodiments, a ratio of a difference between an area of ​​the mounting hole and an area of ​​the connection member to the area of ​​the mounting hole when viewed from the vibration direction is greater than 0 and equal to or less than 0.5.

[0209] In some embodiments, the gap between the connection member and the wall surface of the mounting hole is not less than 0.1 mm and not more than 1 mm.

[0210] In some embodiments, the earphone includes a support assembly and a core module connected to the support assembly, the support assembly supporting the core module to be worn in a wearing position, the core module including a core housing, an energy conversion device, and a diaphragm, the energy conversion device being installed in an accommodating cavity of the core housing, the diaphragm being connected to the energy conversion device and transmitting mechanical vibrations generated by the energy conversion device to a user, and in a worn state, when viewed from a direction in which a coronal axis of a human body is located, a center of the diaphragm on a side facing the wearing position is closer to the ear canal of the user's ear than a center of the core housing on a side facing the wearing position in a direction in which a sagittal axis of the human body is located.

[0211] In some embodiments, the center of the vibration panel projected orthogonally onto the core housing along the vibration direction of the energy conversion device overlaps with the center of the energy conversion device projected orthogonally onto the core housing along the vibration direction, and the center of the energy conversion device projected orthogonally onto the core housing along the vibration direction does not overlap with the center of the side of the core housing facing the energy conversion device in the vibration direction.

[0212] In some embodiments, the center of the energy conversion device projected orthogonally onto the core housing along the vibration direction of the energy conversion device overlaps with the center of the side of the core housing facing the energy conversion device in the vibration direction, and the center of the diaphragm panel projected orthogonally onto the core housing along the vibration direction does not overlap with the center of the energy conversion device projected orthogonally onto the core housing along the vibration direction.

[0213] In some embodiments, the earphone further includes an adapter housing connecting the core housing and the support assembly, the adapter housing including a cylindrical sidewall positioned on the outer periphery of the core housing, wherein orthogonal projections of the core housing and the cylindrical sidewall onto a reference plane perpendicular to a vibration direction of the energy conversion device have a first center and a second center, respectively, and in a worn state, the first center is closer to the ear canal of the user's ear than the second center.

[0214] In some embodiments, the core housing rotates relative to the adapter housing about a first axis, and the first center and the second center are spaced apart along a direction in which the first axis lies.

[0215] In some embodiments, the first center and the second center lie on the first axis.

[0216] In some embodiments, the adapter housing rotates relative to the support assembly about a second axis, the second axis intersecting the first axis.

[0217] In some embodiments, the earphone further includes a battery and a motherboard coupled to the energy conversion device, and the adapter housing further includes a mid-plate connected to the inside of the cylindrical sidewall and a case engaged with the cylindrical sidewall, the battery or the motherboard being disposed between the case and the mid-plate, and the core housing being located on the side of the mid-plate away from the case.

[0218] In some embodiments, the support assembly is installed as a head beam assembly, which circumvents the top of the user's head and brings the vibration panel into contact with the user's cheek, and in a worn state, the head beam assembly forms a first contact point with the top of the user's head, and the vibration panel forms a second contact point with the user's cheek, and the distance between the second contact point and the first contact point in the direction of the sagittal axis of the human body is 20 mm to 30 mm.

[0219] In some embodiments, the head beam assembly includes an arcuate head beam member and an adapter member, the arcuate head beam member bypassing the top of the user's head, the adapter member including a first connecting portion, an intermediate transition portion, and a second connecting portion, the intermediate transition portion connecting the first connecting portion and the second connecting portion, the first connecting portion and the second connecting portion each being bent relative to the intermediate transition portion and extending in opposite directions, the first connecting portion being connected to the arcuate head beam member, and the second connecting portion being connected to the adapter housing, and when viewed from a direction in which the coronary axis of the body is located, the intermediate transition portion is inclined relative to the vertical axis of the body.

[0220] In some embodiments, the support assembly is configured as a head beam assembly, which circumvents the top of the user's head and brings the core module into contact with the user's cheek, and further allows the core module to transmit mechanical vibrations generated in the core module by bone conduction, and in a worn state, the head beam assembly forms a first contact point with the top of the user's head, the core module forms a second contact point with the user's cheek, and the head beam assembly further forms a third contact point with the user's head, which is located between the first contact point and the second contact point in the direction of the vertical axis of the human body.

[0221] In some embodiments, when the head beam assembly forms the third contact point with the user's head, the head beam assembly does not contact the user's head at least a portion between the first contact point and the second contact point.

[0222] In some embodiments, the head beam assembly forms the third contact point with each side of the user's head.

[0223] In some embodiments, each end of the head beam assembly is connected to one of the core modules, and each of the core modules forms the second contact point with the user's cheek.

[0224] In some embodiments, when worn, the earphone applies a pressure force directed toward the user's head at the first contact point, the second contact point, and the third contact point, respectively.

[0225] In some embodiments, the pressing force at the second contact point is 0.2N to 2N, and the pressing force at the third contact point is 0.3N to 2N.

[0226] In some embodiments, the head beam assembly includes an arcuate head beam member and two auxiliary members connected to the arcuate head beam member, the arcuate head beam member circumventing the top of the user's head, the core module connected to the arcuate head beam member, and in a worn state, the two auxiliary members form the third contact point with either side of the user's head, respectively.

[0227] In some embodiments, the auxiliary member has elasticity, and when the earphone is worn by users with different head sizes, the auxiliary member undergoes different degrees of elastic deformation, resulting in a change in the pressing force at the second contact point of 0.2 N or less.

[0228] In some embodiments, the head beam assembly further includes an adapter member connecting the arcuate head beam member and the core module, the adapter member allowing the core module to move closer to or farther from the arcuate head beam member in the extension direction of the head beam assembly, the arcuate head beam member providing a first pressing force to the core module in a first use state and a second pressing force to the core module in a second use state, and the auxiliary member is configured such that an absolute value of a difference between the second pressing force and the first pressing force is 0 to 0.1 N; The first use state is defined as a use state in which each adapter member has a first extension relative to the arcuate head beam member and a first spacing between the core modules at both ends of the head beam assembly, and the second use state is defined as a use state in which each adapter member has a second extension relative to the arcuate head beam member and a second spacing between the core modules at both ends of the head beam assembly, the second extension being greater than the first extension and the second spacing being greater than the first spacing.

[0229] In some embodiments, the first pressing force and the second pressing force are each between 0.4N and 0.8N.

[0230] In some embodiments, the first extension amount is minimum when the core module is closest to the arcuate head beam member, and the second extension amount is maximum when the core module is farthest from the arcuate head beam member.

[0231] In some embodiments, in a natural state, the head beam assembly has a first reference plane and a second reference plane that are perpendicular to each other, the two auxiliary members are installed symmetrically with respect to the first reference plane, the second reference plane passes through the highest point and two end points of the arc-shaped head beam member, the arc-shaped head beam member and the auxiliary member are projected onto the second reference plane, within the second reference plane, a line connecting the fixed end and the free end of the auxiliary member has a first projected component in a first reference direction parallel to the line connecting the two end points and a second projected component in a second reference direction perpendicular to the line connecting the two end points, the ratio of the second projected component to the first projected component is 1 to 5, and / or the equivalent elastic modulus of the auxiliary member is 100 N / m to 180 N / m.

[0232] In some embodiments, in a natural state, the arc-shaped head beam member is projected onto the second reference plane, and a Cartesian coordinate system is established within the second reference plane, the Cartesian coordinate system has the highest point as its coordinate origin, a straight line passing through the coordinate origin and parallel to a line connecting the two end points as its x-axis, and a straight line passing through the coordinate origin and perpendicular to the x-axis as its y-axis, and a curve from any of the end points of the arc-shaped head beam member to the highest point satisfies the following relational expression:

[0233]

number

[0234] The thickness of the auxiliary member is 4 mm or less, and the gap between the auxiliary member and the arc-shaped head beam member is 10 mm or more.

[0235] In some embodiments, each auxiliary member is fixed to one end of the arc-shaped head beam member, and a line connecting one of the end points of the arc-shaped head beam member to the highest point has a third projection component in a first reference direction parallel to the line connecting the two end points, and a fourth projection component in a second reference direction perpendicular to the line connecting the two end points, and the ratio between the second projection component and the fourth projection component is 0.1 to 0.5.

[0236] In some embodiments, each of the support members is cantilevered relative to the arcuate head beam member.

[0237] In some embodiments, when the head is lowered, the pressing force at the first contact point forms a first resistance moment with respect to the second contact point, the pressing force at the third contact point forms a second resistance moment with respect to the second contact point, the pressing force at the second contact point forms a third resistance moment with respect to the contact surface of the core module that contacts the user's cheek if the head beam assembly includes the auxiliary member, and the pressing force at the second contact point forms a fourth resistance moment with respect to the contact surface of the core module that contacts the user's cheek if the head beam assembly does not include the auxiliary member, and the resultant moment formed by the first resistance moment, the second resistance moment, and the third resistance moment is greater than the resultant moment formed by the first resistance moment and the fourth resistance moment.

[0238] In some embodiments, in a natural state, the head beam assembly has a first reference plane and a second reference plane that are perpendicular to each other, the two auxiliary members are installed symmetrically with respect to the first reference plane, the second reference plane passes through the highest point and two end points of the arc-shaped head beam member, the arc-shaped head beam member and the auxiliary member are projected onto the second reference plane, and within the second reference plane, the projection component of the distance from the fixed end of the auxiliary member connected to the arc-shaped head beam member to the core module adjacent to the auxiliary member in a second reference direction perpendicular to the line connecting the two end points is 40 mm to 120 mm.

[0239] In some embodiments, the auxiliary member extends toward the intermediate region of the arc-shaped head beam member, and in a natural state, the head beam assembly has a first reference plane and a second reference plane that are perpendicular to each other, the two auxiliary members are installed symmetrically with respect to the first reference plane, the second reference plane passes through the highest point and two end points of the arc-shaped head beam member, and the arc-shaped head beam member and the auxiliary member are projected onto the second reference plane, and within the second reference plane, the fixed end of the auxiliary member connected to the arc-shaped head beam member has a first distance from the highest point in a reference direction perpendicular to a line connecting the two end points, and the position of the core module connected to the head beam assembly has a second distance from the highest point in the reference direction, and the ratio of the first distance to the second distance is 1 / 3 to 1 / 2.

[0240] In some embodiments, the auxiliary member extends toward the end of the arc-shaped head beam member, and in a natural state, the head beam assembly has a first reference plane and a second reference plane that are perpendicular to each other, the two auxiliary members are installed symmetrically with respect to the first reference plane, the second reference plane passes through the highest point and two end points of the arc-shaped head beam member, and the arc-shaped head beam member and the auxiliary member are projected onto the second reference plane, and within the second reference plane, the fixed end of the auxiliary member connected to the arc-shaped head beam member has a third distance from the highest point in a reference direction perpendicular to a line connecting the two end points, and the position of the core module connected to the head beam assembly has a fourth distance from the highest point in the reference direction, and the ratio of the third distance to the fourth distance is 1 / 5 to 1 / 3.

[0241] In some embodiments, the auxiliary member includes a fixed portion, a first extension portion connected to the fixed portion, and a second extension portion connected to the first extension portion, the fixed portion being connected to the arcuate head beam member, the first extension portion and the second extension portion being located on the side of the arcuate head beam member facing the user's head in the worn state and being spaced apart from the arcuate head beam member in the natural state, the width of the second extension portion being greater than the width of the first extension portion, and the second extension portion forming the third contact point with the user's head in the worn state.

[0242] In some embodiments, the support member is removably connected to the arcuate head beam member.

[0243] In some embodiments, the area of ​​the second extension portion that contacts the user's head is 2 cm 2 ~8cm 2 is.

[0244] In some embodiments, the coefficient of friction of the second extension portion is greater than the coefficient of friction of the first extension portion.

[0245] In some embodiments, in the worn state, the second extension portions of the two auxiliary members approach each other toward the rear of the user's head when viewed from a direction in which the vertical axis of the human body is located.

[0246] In some embodiments, in a natural state, the head beam assembly has a first reference plane and a second reference plane that are perpendicular to each other, the two auxiliary members are installed symmetrically with respect to the first reference plane, the second reference plane passes through the highest point and two end points of the arc-shaped head beam member, and the included angle between the average normal of the second extension portion of each auxiliary member and the second reference plane is 5 degrees to 10 degrees.

[0247] In some embodiments, the support assembly is configured as a head beam assembly, which bypasses the top of the user's head and brings the core module into contact with the user's cheek, and further allows the core module to transmit mechanical vibrations generated in the core module via bone conduction, and when worn, the core module forms a first contact point with the user's cheek and applies a first pressing force to the user's head, and the head beam assembly forms a second contact point with the user's head and applies a second pressing force to the user's head, and the second contact point is closer to the top of the user's head than the first contact point in the direction of the vertical axis of the human body.

[0248] In some embodiments, when the head beam assembly applies the second pressing force to the user's head at the second contact point, at least a portion between the second contact point and the top of the user's head does not contact the user's head.

[0249] In some embodiments, the pressing force at the first contact point is 0.2N to 2N, and the pressing force at the second contact point is 0.3N to 2N.

[0250] In some embodiments, the head beam assembly includes an arc-shaped head beam member and two auxiliary members connected to the arc-shaped head beam member, the arc-shaped head beam member bypassing the top of the user's head, the core module connected to the arc-shaped head beam member, and in a worn state, the two auxiliary members respectively form the second contact points with both sides of the user's head, the auxiliary members having elasticity, and when the earphones are worn by users with heads of different sizes, the auxiliary members undergo different degrees of elastic deformation, so that the change in the first pressing force is 0.2 N or less.

[0251] In some embodiments, when the head is lowered, the second pressing force forms a first resistance moment with respect to the first contact point, the pressing force at the first contact point forms a second resistance moment with respect to the contact surface of the core module that contacts the user's cheek if the head beam assembly includes the auxiliary member, and the pressing force at the first contact point forms a third resistance moment with respect to the contact surface of the core module that contacts the user's cheek if the head beam assembly does not include the auxiliary member, and the resultant moment formed by the first resistance moment and the second resistance moment is greater than the third resistance moment.

[0252] In some embodiments, the core module includes an enclosing member connected to the core housing, the projection of the enclosing member onto a reference plane surrounding the outer periphery of the projection of the vibration panel onto the reference plane, the reference plane being perpendicular to the vibration direction of the energy conversion device, the side of the core housing closest to the vibration panel being formed to surround a cavity together with the vibration panel and the enclosing member, and the enclosing member having a communication hole connecting the cavity to the outside of the core module, so that in the installed state the cavity is connected to the outside of the core module via the communication hole.

[0253] In some embodiments, in a worn state, at least a portion of the surrounding member, together with the vibration panel, contacts the user's skin.

[0254] In some embodiments, a target frequency range having a section length of at least ⅓ of an octave exists within a frequency range of 500 Hz to 4 kHz, and within the target frequency range, sound leakage that occurs when the earphone is worn with the communication hole in an open state is weaker than sound leakage that occurs when the earphone is worn with the communication hole in a closed state.

[0255] In some embodiments, the target frequency range is between 1 kHz and 2 kHz.

[0256] In some embodiments, the number of the communication holes is plural, and the opening ratio of the communication holes in the surrounding member is 30% or more.

[0257] In some embodiments, there is at least one communication hole per square millimeter of unit area in the enclosing member.

[0258] In some embodiments, the surrounding member is a plastic part and has a thickness of 0.2 mm to 1 mm.

[0259] In some embodiments, the enclosing member is a plastic part, and the thickness of the part that comes into contact with the user's skin is greater than 1 mm.

[0260] In some embodiments, the enclosure is a plastic part that is molded onto the metal frame by an injection molding process.

[0261] In some embodiments, the surrounding member is a metal part that allows the communication holes to have an opening rate of 60% or more in the surrounding member.

[0262] In some embodiments, the enclosure is a steel mesh.

[0263] In some embodiments, the core housing is a first plastic part, and the surrounding member is connected to the core housing by a second plastic part, which is integrally molded with the metal part by an injection molding process.

[0264] In some embodiments, the core module includes a first vibration transmission sheet and a connecting member, the energy conversion device is suspended in the accommodating cavity via the first vibration transmission sheet, the core housing includes an inner cylindrical wall and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall are located on opposite sides of the energy conversion device in the vibration direction, and together with the inner cylindrical wall, they surround the accommodating cavity, the first end wall has a mounting hole, the diaphragm is located outside the core housing, one end of the connecting member is connected to the diaphragm panel and the other end is inserted into the core housing through the mounting hole and connected to the energy conversion device, the surrounding member is connected to the first end wall and, together with the first end wall and the diaphragm panel, they surround the cavity, and when viewed from the vibration direction, the area of ​​the diaphragm panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0265] In some embodiments, a ratio of a difference between an area of ​​the mounting hole and an area of ​​the connection member to the area of ​​the mounting hole when viewed from the vibration direction is greater than 0 and equal to or less than 0.5.

[0266] In some embodiments, the accommodating cavity communicates with the outside of the core module through a passage that is a gap between the connecting member and the wall surface of the mounting hole, and the core module further includes a sealing membrane that seals the passage.

[0267] In some embodiments, the sealing membrane includes a first connecting portion, a corrugated portion, and a second connecting portion that are integrally connected, the corrugated portion forming a recessed area between the first connecting portion and the second connecting portion, the first connecting portion being connected to the first end wall, and the second connecting portion being connected to the connecting member or the diaphragm panel.

[0268] In some embodiments, the core module includes an enclosing member that is connected to the core housing, the projection of the enclosing member onto a reference plane surrounding the outer periphery of the projection of the vibration panel onto the reference plane, the reference plane being perpendicular to the vibration direction of the energy conversion device, the side of the core housing closest to the vibration panel being formed to surround a cavity together with the vibration panel and the enclosing member, and the enclosing member having an uneven area on its outer surface facing the user's skin when worn, so that the enclosing member does not come into complete contact with the user's skin when in contact with it, and further allowing communication between the cavity and the outside of the core module.

[0269] In some embodiments, a groove is provided on the outer surface of the surrounding member, and the cavity communicates with the outside of the core module through the groove.

[0270] In some embodiments, the projection of the surrounding member onto the reference plane has long and short axis directions that are perpendicular to each other, the dimension of the surrounding member in the long axis direction is greater than the dimension of the surrounding member in the short axis direction, the number of grooves is multiple, the multiple grooves are divided into four sets, two sets of grooves are spaced apart along the long axis direction, and the other two sets of grooves are spaced apart along the short axis direction, and the number of grooves in each set spaced apart along the long axis direction is greater than the number of grooves in each set spaced apart along the short axis direction.

[0271] In some embodiments, a protrusion is provided on the outer surface of the surrounding member, and the protrusion forms a gap between the surrounding member and the user's skin when the surrounding member is worn, and the cavity communicates with the outside of the core module through the gap.

[0272] In some embodiments, the number of the protrusions is plural, and the plural protrusions form a grid pattern on the gap.

[0273] In some embodiments, if a target frequency range exists within a frequency range of 500 Hz to 4 kHz, the target frequency range has a section length of at least ⅓ of an octave, and if the outer surface of the enclosing member has an uneven region within the target frequency range, sound leakage that occurs when the earphone is worn is weaker than sound leakage that occurs when the earphone is worn if the outer surface of the enclosing member does not have an uneven region.

[0274] In some embodiments, the target frequency range is between 1 kHz and 2 kHz.

[0275] In some embodiments, the difference in height between the concave and convex regions is 0.5 mm to 5 mm.

[0276] In some embodiments, the surrounding member has a communication hole that connects the cavity to the outside of the core module, so that in the installed state, the cavity further communicates with the outside of the core module through the communication hole.

[0277] In some embodiments, the number of the communication holes is plural, and the opening ratio of the communication holes in the surrounding member is 30% or more.

[0278] In some embodiments, the core module includes a first vibration transmission sheet and a connecting member, the energy conversion device is suspended in the accommodating cavity via the first vibration transmission sheet, the core housing includes an inner cylindrical wall and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall are located on opposite sides of the energy conversion device in the vibration direction of the energy conversion device, and form a surrounding structure of the accommodating cavity together with the inner cylindrical wall, a mounting hole is provided in the first end wall, the diaphragm is located outside the core housing, one end of the connecting member is connected to the diaphragm panel and the other end is inserted into the core housing through the mounting hole and connected to the energy conversion device, the surrounding structure is connected to the first end wall and forms a surrounding structure of the cavity together with the first end wall and the diaphragm panel, when viewed from the vibration direction, an area of ​​the diaphragm panel is larger than an area of ​​the mounting hole, and an area of ​​the mounting hole is larger than an area of ​​the connecting member.

[0279] In some embodiments, a ratio of a difference between an area of ​​the mounting hole and an area of ​​the connection member to the area of ​​the mounting hole when viewed from the vibration direction is greater than 0 and equal to or less than 0.5.

[0280] In some embodiments, the accommodating cavity communicates with the outside of the core module through a passage that is a gap between the connecting member and the wall surface of the mounting hole, and the core module further includes a sealing membrane that seals the passage.

[0281] In some embodiments, the sealing membrane includes a first connecting portion, a corrugated portion, and a second connecting portion that are integrally connected, the corrugated portion forming a recessed area between the first connecting portion and the second connecting portion, the first connecting portion being connected to the first end wall, and the second connecting portion being connected to the connecting member or the diaphragm panel.

[0282] In some embodiments, the core module includes an enclosing member connected to the core housing, the projection of the enclosing member onto a reference plane surrounding the outer periphery of the projection of the vibration panel onto the reference plane, the reference plane being perpendicular to the vibration direction of the energy conversion device, the side of the core housing closest to the vibration panel being formed together with the vibration panel and the enclosing member to surround a cavity, and the enclosing member has a porous structure on the side facing the user's skin when worn, so that when worn, at least a portion of the porous structure comes into contact with the user's skin together with the vibration panel, allowing communication between the cavity and the outside of the core module.

[0283] In some embodiments, a target frequency range having a section length of at least ⅓ octave exists within a frequency range of 500 Hz to 4 kHz, and within the target frequency range, sound leakage that occurs when the earphone is worn when the core module has the porous structure is weaker than sound leakage that occurs when the earphone is worn when the core module does not have the porous structure.

[0284] In some embodiments, the target frequency range is between 1 kHz and 2 kHz.

[0285] In some embodiments, the porous structure includes a fixing layer and a porous body layer connected to the fixing layer, the porous structure is connected to the surrounding member via the fixing layer, and the porous structure communicates with the cavity and the outside of the core module via the porous body layer.

[0286] In some embodiments, the anchoring layer is removably connected to the enclosure.

[0287] In some embodiments, the connection between the fixing layer and the enclosing member is one of a magnetic attraction type, a buckle type, and an adhesive type.

[0288] In some embodiments, the anchoring layer is a cured adhesive, and the porous structure includes a protective layer covering the porous body layer and contacts the user's skin through the protective layer.

[0289] In some embodiments, the protective layer is a woven fabric or steel mesh.

[0290] In some embodiments, the porous body layer has a porosity of 60% or greater.

[0291] In some embodiments, the porous body layer is a foam.

[0292] In some embodiments, the surrounding member has a communication hole that connects the cavity to the outside of the core module, so that in the installed state, the cavity further communicates with the outside of the core module through the communication hole.

[0293] In some embodiments, the number of the communication holes is plural, and the opening ratio of the communication holes in the surrounding member is 30% or more.

[0294] In some embodiments, the core module includes a first vibration transmission sheet and a connecting member, the energy conversion device is suspended in the accommodating cavity via the first vibration transmission sheet, the core housing includes an inner cylindrical wall and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall are located on opposite sides of the energy conversion device in the vibration direction of the energy conversion device, and together with the inner cylindrical wall, surround the accommodating cavity, the first end wall has a mounting hole, the diaphragm is located outside the core housing, one end of the connecting member is connected to the diaphragm panel and the other end is inserted into the core housing through the mounting hole and connected to the energy conversion device, the surrounding member is formed to surround the cavity together with the first end wall and the diaphragm panel, and when viewed from the vibration direction, the area of ​​the diaphragm panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0295] In some embodiments, a ratio of a difference between an area of ​​the mounting hole and an area of ​​the connection member to the area of ​​the mounting hole when viewed from the vibration direction is greater than 0 and equal to or less than 0.5.

[0296] In some embodiments, the accommodating cavity communicates with the outside of the core module through a passage that is a gap between the connecting member and the wall surface of the mounting hole, and the core module further includes a sealing membrane that seals the passage.

[0297] In some embodiments, the sealing membrane includes a first connecting portion, a corrugated portion, and a second connecting portion that are integrally connected, the corrugated portion forming a recessed area between the first connecting portion and the second connecting portion, the first connecting portion being connected to the first end wall, and the second connecting portion being connected to the connecting member or the diaphragm panel.

[0298] In some embodiments, the earphone includes a core module, a battery and a motherboard coupled to the core module, the core module including a core housing and an energy conversion device installed in an accommodating cavity of the core housing, and transmitting mechanical vibrations generated by the energy conversion device by bone conduction, the battery configured to power the motherboard, and the motherboard configured to control the energy conversion device converting electrical signals into mechanical vibrations.

[0299] In some embodiments, the core module further includes a first vibration transmission sheet and a vibration panel, the energy conversion device is suspended within the accommodating cavity via the first vibration transmission sheet, and the vibration panel is connected to the energy conversion device and contacts the user's skin.

[0300] In some embodiments, the earphone further includes a head beam assembly and an adapter housing, the head beam assembly bypasses the top of the user's head and positions the entire core module in front of the user's ear, the adapter housing has an accommodation space for accommodating electronic components, the core housing is elastically connected to the adapter housing, and the core housing or the adapter housing is connected to the head beam assembly.

[0301] In some embodiments, the energy conversion device includes a magnetic circuit system and a coil, the coil being rigidly connected to the core housing to vibrate the core housing.

[0302] In some embodiments, the energy conversion device includes a bracket and a second vibration transmission sheet, the bracket is rigidly connected to the core housing, the second vibration transmission sheet connects the bracket and the magnetic circuit system such that the magnetic circuit system is suspended within the accommodating cavity, and the coil is connected to the bracket and inserted into the magnetic gap of the magnetic circuit system along the vibration direction.

[0303] In some embodiments, the core housing has a contact surface on the side away from the adapter housing that contacts the user's skin.

[0304] In some embodiments, the adapter housing is stacked with the core housing along a vibration direction of the energy conversion device and is located on a side of the core housing away from the vibration panel, the adapter housing has a first projected area on a reference plane perpendicular to the vibration direction, the core housing has a second projected area on the reference plane, and a ratio of the first projected area to the second projected area is 0.2 to 1.5; And / or, the gap between the core housing and the adapter housing along the vibration direction of the energy conversion device is 1 mm to 10 mm.

[0305] In some embodiments, the battery or the motherboard is supported and fixed by the adapter housing and is located on the side of the adapter housing facing the energy conversion device.

[0306] In some embodiments, the earphone further includes a head beam assembly, which bypasses the top of the user's head and positions the entire core module in front of the user's ear, and the head beam assembly applies a pressing force of 0.4 N to 0.8 N to press the core module against the user's cheek.

[0307] In some embodiments, the earphone further includes a head beam assembly and a support member connected to the head beam assembly, the head beam assembly bypassing the top of the user's head and positioning the entire core module in front of the user's ear, and the battery or the motherboard being installed within the support member.

[0308] In some embodiments, in a worn state, the support member and the core module are spaced apart along a sagittal axis of the body.

[0309] In some embodiments, the core module is closer to the front of the user's head than the support member.

[0310] In some embodiments, when worn, the support member and the core module are spaced apart along a vertical axis of the body, with the core module being further from the top of the user's head than the support member.

[0311] In some embodiments, the core module includes a core housing, an energy conversion device, a first vibration transmission sheet, and a vibration panel, the energy conversion device is suspended in the accommodating cavity of the core housing via the first vibration transmission sheet, the vibration panel is connected to the energy conversion device and contacts the user's skin, the earphone further includes a battery electrically connected to the energy conversion device, the battery is installed at a distance from the energy conversion device in the vibration direction of the energy conversion device, and a ratio of the capacity of the battery to the sum of the weights of the core housing and the battery is 11 mAh / g to 24.5 mAh / g.

[0312] In some embodiments, the earphone includes an adapter housing connected to a core housing, the battery is located within the adapter housing, and the ratio of the capacity of the battery to the sum of the weight of the core housing and the adapter housing is between 55 mAh / g and 220 mAh / g.

[0313] In some embodiments, the battery has a capacity of 200 mAh or more, and the combined weight of the core housing and the adapter housing is 1 g to 4 g.

[0314] In some embodiments, the ratio of the capacity of the battery to the area of ​​the diaphragm that contacts the user's skin is 0.37 mAh / mm 2 ~0.73mAh / mm 2 is.

[0315] In some embodiments, the earphone further includes a head beam assembly connected to the core module, the head beam assembly bypassing the top of the user's head and positioning the core module in front of the user's ear, and in a worn state, the head beam assembly forms a first contact point with the top of the user's head and the core module forms a second contact point with the user's cheek, and the distance between the second contact point and the first contact point in a direction along the sagittal axis of the human body is 20 mm to 30 mm.

[0316] In some embodiments, the head beam assembly includes an arcuate head beam member and an adapter member, the arcuate head beam member bypassing the top of the user's head, the adapter member including a first connecting portion, an intermediate transition portion and a second connecting portion, the intermediate transition portion connecting the first connecting portion and the second connecting portion, the first connecting portion and the second connecting portion each being bent relative to the intermediate transition portion and extending in opposite directions, the first connecting portion being connected to the arcuate head beam member and the second connecting portion being connected to the core module, and when viewed from a direction in which the coronary axis of the body is located, the intermediate transition portion is inclined relative to the vertical axis of the body.

[0317] In some embodiments, the core housing includes an inner cylindrical wall and a first end wall and a second end wall connected to one end of the inner cylindrical wall, the first end wall and the second end wall being located on opposite sides of the energy conversion device in the vibration direction, and forming, together with the inner cylindrical wall, the accommodating cavity surrounding the accommodating cavity, a mounting hole being provided in the first end wall, the vibration panel being located outside the core housing and in contact with the user's skin, the core module further including a connecting member, one end of the connecting member being connected to the vibration panel and the other end being inserted into the core housing through the mounting hole and connected to the energy conversion device, and when viewed from the vibration direction, the area of ​​the vibration panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0318] In some embodiments, the receiving cavity communicates with the outside of the earphone only through a passage that is a gap between the connecting member and a wall surface of the mounting hole; Alternatively, the accommodating cavity communicates with the outside of the earphone only through a first passage, which is a gap between the connecting member and the wall surface of the mounting hole, and a second passage, which communicates with the outside of the earphone via an acoustic filter.

[0319] In some embodiments, the ratio of the area of ​​the mounting hole to the area of ​​the first end wall when viewed in the vibration direction is 0.6 or less.

[0320] In some embodiments, a ratio of a difference between an area of ​​the mounting hole and an area of ​​the connection member to the area of ​​the mounting hole when viewed from the vibration direction is greater than 0 and equal to or less than 0.5.

[0321] In some embodiments, the earphone includes a head beam assembly, the head beam assembly bypasses the top of the user's head and positions the core module in front of the user's ear, and in a worn state, the head beam assembly forms a first contact point with the top of the user's head and the core module forms a second contact point with the user's cheek, and the distance between the second contact point and the first contact point in a direction along the sagittal axis of the human body is 20 mm to 30 mm.

[0322] In some embodiments, when viewed from a direction in which the coronal axis of the body lies, at least a portion of the head beam assembly is tilted relative to the vertical axis of the body.

[0323] In some embodiments, the head beam assembly includes an arcuate head beam member and an adapter member, the arcuate head beam member bypassing the top of the user's head, the adapter member including a first connecting portion, an intermediate transition portion and a second connecting portion, the intermediate transition portion connecting the first connecting portion and the second connecting portion, the first connecting portion and the second connecting portion each being bent relative to the intermediate transition portion and extending in opposite directions, the first connecting portion being connected to the arcuate head beam member and the second connecting portion being connected to the core module, and when viewed from a direction in which the coronary axis of the body is located, the intermediate transition portion is inclined relative to the vertical axis of the body.

[0324] In some embodiments, the bending angle of the first connecting portion relative to the intermediate transition portion is greater than or equal to 90° and less than 180°, and / or the bending angle of the second connecting portion relative to the intermediate transition portion is greater than or equal to 90° and less than 180°.

[0325] In some embodiments, when worn, the first connecting portion is parallel to the second connecting portion when viewed from the direction in which the coronary axis of the human body is located, and the distance between the first connecting portion and the second connecting portion is 20 mm to 30 mm.

[0326] In some embodiments, the first connecting portion and the second connecting portion each have a wiring cavity, and the intermediate transition portion has a slot that communicates the wiring cavities of the first connecting portion and the second connecting portion to allow wiring of the earphone to extend from the core module through the adapter member to the arcuate head beam member, and the head beam assembly further includes a sealing member fitted in the slot, and the sealing member covers the wiring.

[0327] In some embodiments, the adapter member is made of metal and the arc-shaped head beam member is made of plastic.

[0328] In some embodiments, the first connecting portion can be retracted and retracted relative to the arcuate head beam member by an external force.

[0329] In some embodiments, the adapter member and the core module are installed on both ends of the arc-shaped head beam member, and the head beam assembly provides a first pressing force to the core module in a first use state and a second pressing force to the core module in a second use state, and an absolute value of a difference between the second pressing force and the first pressing force is 0 to 0.1 N; The first use state is defined as a use state in which each adapter member has a first extension amount relative to the arcuate head beam member and a first spacing between the two core modules, and the second use state is defined as a use state in which each adapter member has a second extension amount relative to the arcuate head beam member and a second spacing between the two core modules, the second extension amount being greater than the first extension amount and the second spacing being greater than the first spacing.

[0330] In some embodiments, the pressing force of the core module against the user's cheek is 0.4N to 0.8N.

[0331] In some embodiments, the earphone includes an adapter housing, the core housing includes a first core housing connected to the adapter housing, the first core housing includes an inner cylindrical wall, an outer cylindrical wall, and a transition wall, the inner cylindrical wall is located on an outer periphery of the energy conversion device, the outer cylindrical wall is located on an outer periphery of the inner cylindrical wall and is installed at a distance from the inner cylindrical wall in a direction perpendicular to the vibration direction of the energy conversion device, the transition wall is connected between the inner cylindrical wall and the outer cylindrical wall, the outer cylindrical wall, the inner cylindrical wall, and the transition wall form an acoustic cavity surrounding the acoustic cavity, the acoustic cavity is in communication with the accommodating cavity, and air in the accommodating cavity absorbs acoustic energy of sound waves generated by the vibration of the energy conversion device.

[0332] In some embodiments, the frequency response curve of the acoustic wave has a resonant peak, and the acoustic cavity is a Helmholtz resonant cavity to attenuate the peak resonance strength of the resonant peak.

[0333] In some embodiments, the peak resonance frequency of the resonance peak is 500 Hz to 4 kHz, and a difference between a peak resonance intensity of the resonance peak when an opening communicating between the Helmholtz resonant cavity and the accommodating cavity is in an open state and a peak resonance intensity of the resonance peak when the opening communicating between the Helmholtz resonant cavity and the accommodating cavity is in a closed state is 3 dB or more.

[0334] In some embodiments, the first core housing further includes a cover plate connected between the inner and outer cylindrical walls, the cover plate and the transition wall being spaced apart in the vibration direction and surrounding and forming the Helmholtz resonator cavity together with the outer cylindrical wall, the inner cylindrical wall, and the transition wall.

[0335] In some embodiments, the acoustic cavity is an acoustic filter, and the cutoff frequency of the acoustic filter is 5 kHz or less.

[0336] In some embodiments, the first core housing further includes an end wall, the end wall connected to one end of the inner cylindrical wall and surrounding the accommodating cavity; the adapter housing includes a mid-plate and a cylindrical side wall connected to the mid-plate, the mid-plate being located on a side of the end wall away from the accommodating cavity, the cylindrical side wall being located on an outer periphery of the outer cylindrical wall; the end wall, the inner cylindrical wall, the transition wall, and the outer cylindrical wall, together with the mid-plate and the cylindrical side wall, form a surrounding acoustic filter; and the sound waves are absorbed by the acoustic filter and then transmitted to the outside of the earphone through a gap between the cylindrical side wall and the outer cylindrical wall.

[0337] In some embodiments, the gap between the transition wall and the middle plate in the vibration direction and the gap between the inner tube wall and the outer tube wall in a direction perpendicular to the vibration direction are both larger than the gap between the cylindrical side wall and the outer tube wall in a direction perpendicular to the vibration direction.

[0338] In some embodiments, the first core housing further includes a reinforcing pillar connecting the outer cylindrical wall and the inner cylindrical wall, and one of the reinforcing pillar and the cylindrical side wall has an axial hole, and the other has a rotating shaft that engages with the axial hole, and the rotating shaft is fitted into the axial hole to allow the core housing to rotate relative to the adapter housing.

[0339] In some embodiments, the earphones further include a head beam assembly connected to the core module, the head beam assembly bypassing the top of the user's head and bringing the core module into contact with the user's cheek, the head beam assembly including an arcuate head beam member and an adapter member, the arcuate head beam member bypassing the top of the user's head, the adapter member including a first connecting portion, an intermediate transition portion, and a second connecting portion connected in sequence, the first connecting portion being connected to the arcuate head beam member and the second connecting portion being connected to the adapter housing, the first connecting portion and the second connecting portion being bent relative to the intermediate transition portion and extending in opposite directions, so that in a worn state, when viewed from a direction in which the coronal axis of the human body is located, the arcuate head beam member is located above the user's ear and the core module is located in front of the user's ear.

[0340] In some embodiments, the bending angle of the first connecting portion relative to the intermediate transition portion is greater than or equal to 90° and less than 180°, and / or the bending angle of the second connecting portion relative to the intermediate transition portion is greater than or equal to 90° and less than 180°.

[0341] In some embodiments, when worn, the first connecting portion is parallel to the second connecting portion when viewed from the direction in which the coronary axis of the human body is located, and the distance between the first connecting portion and the second connecting portion is 20 mm to 30 mm.

[0342] In some embodiments, the earphones include a first circuit board, a second circuit board, an encoder, a tactile switch, and a function key, the first circuit board and the second circuit board are stacked, the encoder is mounted on the first circuit board, the tactile switch is mounted on the second circuit board and is located on a side of the second circuit board facing the first circuit board, the function key includes a keycap and a key rod connected to the keycap, the keycap is located on a side of the first circuit board away from the second circuit board, a free end of the key rod away from the keycap is located directly opposite the tactile switch, the encoder is fitted to the key rod, when a user rotates the key rod via the keycap, the key rod moves the encoder to generate a first input signal, and when a user presses the key rod via the keycap, the key rod triggers the tactile switch to generate a second input signal.

[0343] In some embodiments, the first input signal controls volume up / down of the earphones, and / or the second input signal controls one of play / pause, next, device pairing, and power on / off of the earphones.

[0344] In some embodiments, the earphone further includes a housing and an adapter ring, the housing includes a first cylindrical body, the first circuit board and the second circuit board are stacked and installed within the first cylindrical body along the axial direction of the first cylindrical body, the adapter ring is fitted onto the outer periphery of the first cylindrical body, the adapter ring is positionally restricted along the axial direction of the first cylindrical body and is rotatable around the axial direction of the first cylindrical body, the key top is fixedly installed on the adapter ring, and the key rod is inserted into the first cylindrical body along the axial direction of the first cylindrical body.

[0345] In some embodiments, a first buckle is provided on the outer peripheral wall of the first cylindrical body, the adapter ring includes a second cylindrical body, and a second buckle is provided on the inner peripheral wall of the second cylindrical body, and the first buckle and the second buckle engage with each other to limit movement of the adapter ring in a direction opposite to the insertion direction of the key rod into the first cylindrical body.

[0346] In some embodiments, a first flange is further provided on the outer peripheral wall of the first cylindrical body, and a second flange is further provided on the outer peripheral wall of the second cylindrical body, and the first flange supports the second flange to limit movement of the adapter ring along the insertion direction of the key rod relative to the first cylindrical body.

[0347] In some embodiments, the key top includes a third cylinder and an end plate, the third cylinder is fitted onto the outer periphery of the second cylinder and has one end supported on a side of the second flange away from the first flange, the end plate is attached to the other end of the third cylinder, and the key rod is attached to the end plate.

[0348] In some embodiments, the function keys are made of plastic and the adapter ring is made of metal.

[0349] In some embodiments, the earphones include a head beam assembly that bypasses the top of the user's head and positions the core module in front of the user's ear, and when worn, the head beam assembly forms a first contact point with the top of the user's head and the core module forms a second contact point with the user's cheek, and the distance between the second contact point and the first contact point in a direction along the sagittal axis of the human body is 20 mm to 30 mm.

[0350] In some embodiments, the head beam assembly includes an arcuate head beam member and an adapter member, the arcuate head beam member bypassing the top of the user's head, the adapter member including a first connecting portion, an intermediate transition portion and a second connecting portion, the intermediate transition portion connecting the first connecting portion and the second connecting portion, the first connecting portion and the second connecting portion each being bent relative to the intermediate transition portion and extending in opposite directions, the first connecting portion being connected to the arcuate head beam member and the second connecting portion being connected to the core module, and when viewed from a direction in which the coronary axis of the body is located, the intermediate transition portion is inclined relative to the vertical axis of the body.

[0351] In some embodiments, the core module includes a first vibration transmission sheet, a vibration panel, and a connecting member, the core housing is connected to the head beam assembly, the energy conversion device is suspended in the accommodating cavity of the core housing via the first vibration transmission sheet, the core housing includes an inner cylindrical wall and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall are located on opposite sides of the energy conversion device in the vibration direction of the energy conversion device, and together with the inner cylindrical wall, surround the accommodating cavity, a mounting hole is provided in the first end wall, the vibration panel is located outside the core housing and contacts the user's skin, one end of the connecting member is connected to the vibration panel and the other end is inserted into the core housing through the mounting hole and connected to the energy conversion device, when viewed in the vibration direction, the area of ​​the vibration panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0352] In some embodiments, the earphone includes a housing, a sound pickup assembly, and a switch assembly, the sound pickup assembly including a pivotal connection block, a connecting rod, and a sound pickup, the pivotal connection block is pivotally attached to the housing, one end of the connecting rod is connected to the pivotal connection block, the sound pickup is located at the other end of the connecting rod, a recessed area is located on a side of the pivotal connection block away from the housing, and the switch assembly is located within the recessed area.

[0353] In some embodiments, a boss is installed at the bottom of the recessed area, and an annular groove is formed between the outer peripheral wall of the boss and the side wall of the recessed area, the switch assembly includes a switch circuit board, an elastic support member, and a key, the switch circuit board is installed on the top of the boss, the elastic support member includes an annular fixing portion and an elastic support member, the annular fixing portion is fixed in the annular groove, the elastic support member is installed in a dome shape and connected to the annular fixing portion, and the key is installed on the elastic support member.

[0354] In some embodiments, the annular fixing portion and the elastic support portion are integrally installed, and the earphone further includes a reinforcing ring that lines the annular fixing portion along a circumferential direction of the annular fixing portion and is connected to the pivot connection block.

[0355] In some embodiments, the reinforcing ring is fitted onto the outer periphery of the annular fixing portion, and the outer periphery wall is fixedly connected to the side wall of the recessed region.

[0356] In some embodiments, the reinforcing ring is a metallic member.

[0357] In some embodiments, the key includes a key top, a key rod, and an annular flange, the key rod and the annular flange are connected to the same side of the key top, the annular flange surrounds the key rod, the key rod and the annular flange are fitted into the elastic support portion, and the key rod overlaps with a protruding switch element on the switch circuit board when projected orthogonally onto the switch circuit board along the pressing direction of the key.

[0358] In some embodiments, the protruding height of the annular flange is equal to the protruding height of the key rod.

[0359] In some embodiments, the earphones include a head beam assembly that bypasses the top of the user's head and positions the core module in front of the user's ear, and when worn, the head beam assembly forms a first contact point with the top of the user's head and the core module forms a second contact point with the user's cheek, and the distance between the second contact point and the first contact point in a direction along the sagittal axis of the human body is 20 mm to 30 mm.

[0360] In some embodiments, the head beam assembly includes an arcuate head beam member and an adapter member, the arcuate head beam member bypassing the top of the user's head, the adapter member including a first connecting portion, an intermediate transition portion and a second connecting portion, the intermediate transition portion connecting the first connecting portion and the second connecting portion, the first connecting portion and the second connecting portion each being bent relative to the intermediate transition portion and extending in opposite directions, the first connecting portion being connected to the arcuate head beam member and the second connecting portion being connected to the core module, and when viewed from a direction in which the coronary axis of the body is located, the intermediate transition portion is inclined relative to the vertical axis of the body.

[0361] In some embodiments, the core module includes a first vibration transmission sheet, a vibration panel, and a connecting member, the core housing is connected to the head beam assembly, the energy conversion device is suspended in the accommodating cavity of the core housing via the first vibration transmission sheet, the core housing includes an inner cylindrical wall and a first end wall and a second end wall respectively connected to both ends of the inner cylindrical wall, the first end wall and the second end wall are located on opposite sides of the energy conversion device in the vibration direction of the energy conversion device, and together with the inner cylindrical wall, surround the accommodating cavity, a mounting hole is provided in the first end wall, the vibration panel is located outside the core housing and contacts the user's skin, one end of the connecting member is connected to the vibration panel and the other end is inserted into the core housing through the mounting hole and connected to the energy conversion device, when viewed in the vibration direction, the area of ​​the vibration panel is larger than the area of ​​the mounting hole, and the area of ​​the mounting hole is larger than the area of ​​the connecting member.

[0362] In some embodiments, the earphones include a head beam assembly, the head beam assembly including an arcuate head beam member, an adapter member, and a connecting wire assembly, the arcuate head beam member bypassing the top of a user's head, the adapter member connected to the arcuate head beam member and capable of being extended and retracted relative to the arcuate head beam member by an external force, the connecting wire assembly including a conductor extending along the arcuate head beam member, the conductor being divided into a fixed position portion and natural portions located at both ends of the fixed position portion, the fixed position portion being fixed to the arcuate head beam member, and the natural portions being connected to the arcuate head beam member to allow the conductor to extend as the adapter member is extended or to return to its original state as the adapter member is retracted.

[0363] In some embodiments, the head beam assembly further includes a pressing member engaged with the arcuate head beam member, the pressing member pressing the position fixing portion against the arcuate head beam member.

[0364] In some embodiments, the pressing member includes a pressing portion and locking portions located at both ends of the pressing portion, each locking portion being bent toward the pressing portion, the sides of the two locking portions facing the pressing portion extending in the same direction and able to approach each other by an external force, the pressing portion pressing the position fixing portion, and the locking portions being locked with the arc-shaped head beam member.

[0365] In some embodiments, the arc-shaped head beam member includes an inner chamber formation and an outer cover connected to the inner chamber formation, the inner chamber formation contacting the user's head, the conductive wire being positioned between the inner chamber formation and the outer cover, and the pressing member being engaged with the outer cover.

[0366] In some embodiments, the arc-shaped head beam member further includes an inner cover, the inner cover and the inner chamber forming body are connected to the same side of the outer cover, and the inner cover and the outer cover sandwich the adapter member.

[0367] In some embodiments, the conductor is further divided into an elastic portion located between the fixed position portion and the natural portion, and the elastic modulus of the elastic portion is greater than the elastic modulus of either the fixed position portion or the natural portion.

[0368] In some embodiments, the connection wire assembly further includes an auxiliary wire connected to the two natural portions, and the elastic modulus of the auxiliary wire is greater than the elastic modulus of the elastic portion to provide an elastic return force when the lead wire is pulled.

[0369] In some embodiments, the auxiliary line includes an elastic body and collars located at both ends of the elastic body, and each collar is fitted onto the corresponding natural portion and is stopped by a position limiting structure of the natural portion in the restoration direction of the stretchable portion.

[0370] In some embodiments, the position limiting structure is a protrusion integrally connected to the insulating layer of the conductor, or a bump formed by connecting the natural portions.

[0371] In some embodiments, both ends of the arc-shaped head beam member are each connected to one of the core modules via one of the adapter members, the battery is connected to one of the two core modules, the motherboard is connected to the other of the two core modules, and the battery and the motherboard are electrically connected via the conductors.

[0372] In some embodiments, the earphones include a head beam assembly, the head beam assembly including an arc-shaped head beam member, an adapter member, and a damper, the arc-shaped head beam member bypasses the top of the user's head and includes an inner chamber forming body, an inner cover, and an outer cover, the inner chamber forming body contacts the user's head, the inner cover and the inner chamber forming body are connected to the same side of the outer cover, the inner cover and the outer cover sandwich the adapter member, the outer cover is provided with a first guide groove that guides the adapter member to move relative to the outer cover, the damper is provided on the side of the adapter member facing the inner cover and protrudes from the first guide groove, and the damper also abuts against the inner cover to provide resistance force when the adapter member extends or retracts relative to the arc-shaped head beam member.

[0373] In some embodiments, the adapter member has an accommodating groove at one end thereof adjacent to the inner chamber formation, and the damper is disposed within the accommodating groove and partially protrudes from the adapter member.

[0374] In some embodiments, a slider is provided at one end of the adapter member close to the inner chamber forming body, a stopper for stopping the slider is provided at one end of the first guide groove of the outer cover body away from the inner chamber forming body, and the accommodating groove is provided on the slider.

[0375] In some embodiments, the inner cover has a second guide groove for guiding the damper when the adapter member extends or retracts relative to the arc-shaped head beam member.

[0376] In some embodiments, the earphone further includes a connection wire assembly disposed between the inner chamber former and the outer cover, the connection wire assembly including a conductor, the adapter member including a first connection portion, an intermediate transition portion, and a second connection portion, the intermediate transition portion connecting the first connection portion and the second connection portion, the first connection portion and the second connection portion each being bent relative to the intermediate transition portion and extending in opposite directions, the slider disposed on the first connection portion, the first connection portion and the second connection portion each having a wiring cavity, and the intermediate transition portion having a slot communicating with the wiring cavities of the first connection portion and the second connection portion to allow the conductor to be further inserted into the adapter member.

[0377] In some embodiments, the conductor is divided into an elastic portion and a natural portion located at both ends of the elastic portion, the elastic modulus of the elastic portion is greater than the elastic modulus of the natural portion, and the natural portion is connected to the adapter member so as to allow the conductor to stretch as the adapter member is extended or to restore as the adapter member is retracted.

[0378] In some embodiments, the connection wire assembly further includes an auxiliary wire connected to the two natural portions, and the elastic modulus of the auxiliary wire is greater than the elastic modulus of the elastic portion to provide an elastic return force when the lead wire is pulled.

[0379] In some embodiments, the auxiliary line includes an elastic body and collars located at both ends of the elastic body, and each collar is fitted onto the corresponding natural portion and is stopped by a position limiting structure of the natural portion in the restoration direction of the stretchable portion.

[0380] In some embodiments, the position limiting structure is a protrusion integrally connected to the insulating layer of the conductor, or a bump formed by connecting the natural portions.

[0381] In some embodiments, both ends of the arc-shaped head beam member are each connected to one of the core modules via one of the adapter members, the battery is connected to one of the two core modules, the motherboard is connected to the other of the two core modules, and the battery and the motherboard are electrically connected via the conductors.

[0382] In some embodiments, the earphones include a head beam assembly, the head beam assembly including an arc-shaped head beam member that bypasses the top of the user's head, the arc-shaped head beam member including an inner chamber forming body, an inner cover, and an outer cover, the inner chamber forming body having elasticity and contacting the user's head, the inner cover and the inner chamber forming body being connected to the same side of the outer cover, an end of the inner chamber forming body being inserted between the inner cover and the outer cover, and in the process of gradually pulling both ends of the head beam assembly apart from each other, the inner chamber forming body being able to partially withdraw from between the inner cover and the outer cover.

[0383] In some embodiments, the inner and outer closures are integrally molded structural members.

[0384] In some embodiments, a through hole is provided at the end of the inner chamber forming body, and a post inserted into the through hole is provided on the side of the inner cover facing the outer cover, the radial dimension of the post being smaller than the radial dimension of the through hole, so that as the ends of the head beam assembly are gradually pulled apart in directions away from each other, the inner chamber forming body partially withdraws from between the inner cover and the outer cover and is stopped by the post.

[0385] In some embodiments, the through-hole is an oval hole whose length is aligned along the extension direction of the arc-shaped head beam member.

[0386] In some embodiments, the number of the through holes and the number of the posts are both two, the two through holes are spaced apart in a direction perpendicular to the extension direction of the head beam assembly, and the two posts are inserted into one of the through holes.

[0387] In some embodiments, the head beam assembly further includes an adapter member, the inner cover body and the outer cover body clamp the adapter member, and the adapter member can be extended and retracted relative to the arc-shaped head beam member by an external force.

[0388] In some embodiments, the earphone further includes a connection wire assembly disposed between the inner chamber former and the outer cover, the connection wire assembly including a conductor, the adapter member including a first connection portion, an intermediate transition portion, and a second connection portion, the intermediate transition portion connecting the first connection portion and the second connection portion, the first connection portion and the second connection portion each being bent relative to the intermediate transition portion and extending in opposite directions, the first connection portion and the second connection portion each including a wiring cavity, and the intermediate transition portion including a slot communicating with the wiring cavities of the first connection portion and the second connection portion to allow the conductor to be further inserted into the adapter member.

[0389] In some embodiments, the conductor is divided into an elastic portion and a natural portion located at both ends of the elastic portion, the elastic modulus of the elastic portion is greater than the elastic modulus of the natural portion, and the natural portion is connected to the adapter member so as to allow the conductor to stretch as the adapter member is extended or to restore as the adapter member is retracted.

[0390] In some embodiments, the connection wire assembly further includes an auxiliary wire connected to the two natural portions, and the elastic modulus of the auxiliary wire is greater than the elastic modulus of the elastic portion to provide an elastic return force when the lead wire is pulled.

[0391] In some embodiments, the auxiliary wire includes an elastic body and collars located at both ends of the elastic body, each of the collars fitted onto the corresponding natural portion and stopped by a position limiting structure of the natural portion in the restoration direction of the stretchable portion, the position limiting structure being a protrusion integrally connected to an insulating layer of the conductor, or the position limiting structure being a bump formed by connecting the natural portions.

[0392] In some embodiments, both ends of the arc-shaped head beam member are each connected to one of the core modules via one of the adapter members, the battery is connected to one of the two core modules, the motherboard is connected to the other of the two core modules, and the battery and the motherboard are electrically connected via the conductors.

[0393] In some embodiments, the earphones include a head beam assembly, the head beam assembly including an arcuate head beam member that circumvents the top of a user's head, the arcuate head beam member being divided into a middle section and final sections connected to both ends of the middle section, the arc length of the final sections being smaller than the arc length of the middle section, and in the process of the ends of the head beam assembly gradually being pulled apart in directions away from each other, the two final sections are deflected in directions away from each other relative to the middle section.

[0394] In some embodiments, the earphone includes a housing, a sound pickup assembly, and a damper, the sound pickup assembly including a pivot connection block, a connecting rod, and a sound pickup device, one of the pivot connection block and the housing forming a pivot hole and the other forming a pivot inserted into the pivot hole, one end of the connecting rod is connected to the pivot connection block, and the sound pickup device is installed at the other end of the connecting rod, the damper is located in a region where the pivot connection block and the housing overlap in the axial direction of the pivot hole, and the damper is connected to one of the pivot connection block and the housing and abuts against the other of the pivot connection block and the housing to provide resistance when the sound pickup assembly rotates relative to the housing.

[0395] In some embodiments, the damper is mounted within a receiving groove of the housing and protrudes from the receiving groove.

[0396] In some embodiments, the damper is arc-shaped when viewed in the axial direction of the pivot hole and is disposed concentrically with the pivot hole.

[0397] In some embodiments, the number of the dampers is plural, and the plural dampers are installed at intervals around the pivot hole.

[0398] In some embodiments, a side of the pivotal connection block toward the housing forms the pivot, a side of the pivotal connection block away from the housing includes a recessed area, and the earbud further includes a switch assembly located within the recessed area.

[0399] In some embodiments, a boss is installed at the bottom of the recessed area, and an annular groove is formed between the outer peripheral wall of the boss and the side wall of the recessed area, the switch assembly includes a switch circuit board, an elastic support member, and a key, the switch circuit board is installed on the top of the boss, the elastic support member includes an annular fixing portion and an elastic support member, the annular fixing portion is fixed in the annular groove, the elastic support member is installed in a dome shape and connected to the annular fixing portion, and the key is installed on the elastic support member.

[0400] In some embodiments, the annular fixing portion and the elastic support portion are integrally installed, and the earphone further includes a reinforcing ring that lines the annular fixing portion along a circumferential direction of the annular fixing portion and is connected to the pivot connection block.

[0401] In some embodiments, the reinforcing ring is fitted onto the outer periphery of the annular fixing portion, and the outer periphery wall is fixedly connected to the side wall of the recessed region.

[0402] In some embodiments, the earphone further includes a head beam assembly, the core module is connected to the head beam assembly via the housing, the head beam assembly bypasses the top of the user's head and positions the core module in front of the user's ear, and in a worn state, the head beam assembly forms a first contact point with the top of the user's head and the core module forms a second contact point with the user's cheek, and a distance between the second contact point and the first contact point in a direction along the sagittal axis of the human body is 20 mm to 30 mm.

[0403] In some embodiments, the head beam assembly includes an arcuate head beam member and an adapter member, the arcuate head beam member bypassing the top of the user's head, the adapter member including a first connecting portion, an intermediate transition portion and a second connecting portion, the intermediate transition portion connecting the first connecting portion and the second connecting portion, the first connecting portion and the second connecting portion each being bent relative to the intermediate transition portion and extending in opposite directions, the first connecting portion being connected to the arcuate head beam member and the second connecting portion being connected to the core module, and when viewed from a direction in which the coronary axis of the body is located, the intermediate transition portion is inclined relative to the vertical axis of the body.

[0404] In some embodiments, the earphone includes a housing, a sound pickup assembly, a conductor, and a partition plate, the sound pickup assembly includes a pivotal connection block, a connecting rod, and a sound pickup device, the pivotal connection block is inserted into a pivot hole of the housing and allows the sound pickup assembly to rotate relative to the housing, one end of the connecting rod is connected to the pivotal connection block, the sound pickup device is installed at the other end of the connecting rod, the conductor extends through the interior of the pivotal connection block and the connecting rod and is electrically connected to the sound pickup device, and the partition plate is fixed within the housing and separates the pivotal connection block and the conductor.

[0405] In some embodiments, the partition plate covers a portion of the pivot connection block in the circumferential direction of the pivot hole and is partially inserted into the pivot hole.

[0406] In some embodiments, the pivotal connection block is configured to be stopped by the divider plate after the sound pickup assembly has rotated a certain angle relative to the housing.

[0407] In some embodiments, the pivot connection block includes a pivot, and a return portion and an operating portion connected to both ends of the pivot, respectively, the pivot being positioned within the pivot hole, the return portion and the operating portion being positioned on opposite sides of the housing so as to engage the pivot connection block and the housing in the axial direction of the pivot hole, the connecting rod being connected to the operating portion, the partition plate including a fixed portion connected to the housing and an arc-shaped extension portion connected to the fixed portion, the fixed portion covering a portion of the return portion and being spaced apart from the return portion in the axial direction of the pivot hole, the arc-shaped extension portion being inserted into the pivot and being spaced apart from the pivot in the radial direction of the pivot hole, the conducting wire being hooked onto the arc-shaped extension portion and the fixed portion when passing through the pivot hole, and the return portion being stopped by the fixed portion after the sound pickup assembly has rotated a certain angle relative to the housing.

[0408] In some embodiments, the earphone further includes a circuit board fixed in the housing, a hot melt post is installed in the housing, the fixing portion and the circuit board are fitted onto the hot melt post, and the sound pickup is electrically connected to the circuit board via the conductor.

[0409] In some embodiments, a recessed area is located on a side of the pivotal connection block away from the housing, and the earphone further includes a switch assembly located within the recessed area.

[0410] In some embodiments, a boss is installed at the bottom of the recessed area, and an annular groove is formed between the outer peripheral wall of the boss and the side wall of the recessed area, the switch assembly includes a switch circuit board, an elastic support member, and a key, the switch circuit board is installed on the top of the boss, the elastic support member includes an annular fixing portion and an elastic support member, the annular fixing portion is fixed in the annular groove, the elastic support member is installed in a dome shape and connected to the annular fixing portion, and the key is installed on the elastic support member.

[0411] In some embodiments, the annular fixing portion and the elastic support portion are integrally installed, and the earphone further includes a reinforcing ring that lines the annular fixing portion along a circumferential direction of the annular fixing portion and is connected to the pivot connection block.

[0412] In some embodiments, the earphone further includes a head beam assembly, the core module is connected to the head beam assembly via the housing, the head beam assembly bypasses the top of the user's head and positions the core module in front of the user's ear, and in a worn state, the head beam assembly forms a first contact point with the top of the user's head and the core module forms a second contact point with the user's cheek, and a distance between the second contact point and the first contact point in a direction along the sagittal axis of the human body is 20 mm to 30 mm.

[0413] In some embodiments, the head beam assembly includes an arcuate head beam member and an adapter member, the arcuate head beam member bypassing the top of the user's head, the adapter member including a first connecting portion, an intermediate transition portion and a second connecting portion, the intermediate transition portion connecting the first connecting portion and the second connecting portion, the first connecting portion and the second connecting portion each being bent relative to the intermediate transition portion and extending in opposite directions, the first connecting portion being connected to the arcuate head beam member and the second connecting portion being connected to the core module, and when viewed from a direction in which the coronary axis of the body is located, the intermediate transition portion is inclined relative to the vertical axis of the body. [Brief explanation of the drawings]

[0414] In order to more clearly describe the technical solutions in the embodiments of the present application, the following briefly introduces drawings necessary for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings based on these drawings without any creative efforts.

[0415] [Figure 1] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 2] 1 is a schematic diagram illustrating an example of the relative positional relationship between a connection member and a diaphragm panel in an earphone according to the present application. [Figure 3] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 4] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 5] 1 is a schematic diagram illustrating a configuration of an embodiment of a diaphragm panel according to the present application. [Figure 6] 1 is a schematic diagram illustrating a configuration of an embodiment of a diaphragm panel according to the present application. [Figure 7] 1 is a schematic diagram illustrating a configuration of an embodiment of a diaphragm panel according to the present application. [Figure 8] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 9] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 10] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 11] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 12] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 13] 1 is a schematic diagram illustrating an embodiment of an earphone according to the present application in a worn state. [Figure 14] 1 is a schematic diagram illustrating an embodiment of an earphone according to the present application in a worn state. [Figure 15]1 is a schematic diagram illustrating an embodiment of an earphone according to the present application in a worn state. [Figure 16] 1 is a schematic diagram illustrating an embodiment of an earphone according to the present application in a worn state. [Figure 17] 1 is a schematic diagram illustrating an embodiment of an earphone according to the present application in a worn state. [Figure 18] FIG. 1 is a schematic diagram of a mechanical model of bending deformation of a cantilever beam according to the present application. [Figure 19] FIG. 2 is a schematic diagram of a dynamic model of an embodiment of a head beam assembly according to the present application. [Figure 20] FIG. 13 is an exploded view of the earphone embodiment of FIG. 12. [Figure 21] FIG. 21 is an exploded view of the earphone of FIG. 20 from another perspective. [Figure 22] 21 is a partial enlarged view of an E1 region of the adapter member in FIG. 20. FIG. [Figure 23] FIG. 13 is an exploded view of the earphone embodiment of FIG. 12. [Figure 24] FIG. 13 is an exploded view of the earphone embodiment of FIG. 12. [Figure 25] 1 is a schematic diagram illustrating an embodiment of an earphone according to the present application in a worn state. [Figure 26] 1 is a schematic diagram illustrating an embodiment of an earphone according to the present application in a worn state. [Figure 27] FIG. 13 is a cross-sectional view of one embodiment of the earphone of FIG. 12. [Figure 28] FIG. 28 is a cross-sectional view of the earphone of FIG. 27 from another perspective. [Figure 29] FIG. 28 is a cross-sectional view of the earphone of FIG. 27 from another perspective. [Figure 30] 1 is a cross-sectional view of an embodiment of an earphone according to the present application. [Figure 31] 1 is a cross-sectional view of an embodiment of an earphone according to the present application. [Figure 32] FIG. 13 is a cross-sectional view of one embodiment of the earphone of FIG. 12. [Figure 33] FIG. 33 is a cross-sectional view of the earphone of FIG. 32 from another perspective. [Figure 34]1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 35] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 36] 1 is a schematic diagram of an equivalent model of an embodiment of an earphone according to the present application. [Figure 37] 1 is a frequency response curve of the vibration of the diaphragm panel when the earphone according to the present application is not worn. [Figure 38] 10A and 10B are frequency response curves of the vibration of the diaphragm panel when the earphone according to the present application is not worn and the first vibration-transmitting sheet has different stiffness. [Figure 39] 10 is a frequency response curve of the vibration of the diaphragm panel when the earphone according to the present application is not worn and the second vibration-transmitting sheet has a different stiffness. [Figure 40] 10A and 10B are frequency response curves of the vibration of the diaphragm panel when the earphone according to the present application is not worn and its core housing has different masses. [Figure 41] 10 is a frequency response curve of the vibration of the diaphragm panel when the earphone according to the present application is not worn and the first vibration-transmitting sheet and the second vibration-transmitting sheet have different stiffnesses. [Figure 42] 1 is a frequency response curve of sound leakage of an embodiment of the present application when two earphones are not worn. [Figure 43] 1 is a schematic diagram illustrating the configuration of the side of an earphone according to an embodiment of the present application that faces the user's skin. FIG. [Figure 44] 1 is a schematic diagram illustrating the configuration of the side of an earphone according to an embodiment of the present application that faces the user's skin. FIG. [Figure 45] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 46] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 47] FIG. 47 is a schematic diagram of an embodiment of the bracket of FIG. 46. [Figure 48] 13 is a schematic diagram of the side of the earphone of FIG. 12 facing the user's head; FIG. [Figure 49]1A to 1C are schematic diagrams illustrating mechanical models of different wearing styles of earphones according to the present application. [Figure 50] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 51] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 52] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 53] FIG. 2 is an exploded view of one embodiment of an arcuate head beam member according to the present application. [Figure 54] FIG. 54 is a cross-sectional view of one embodiment of the arcuate head beam member of FIG. 53. [Figure 55] FIG. 2 is a partially exploded view of an embodiment of a head beam assembly according to the present application. [Figure 56] 1A-1C are schematic diagrams of the local structure of an embodiment of a head beam assembly according to the present application in different states. [Figure 57] 1 is an exploded view of an embodiment of a connection wire assembly according to the present application. [Figure 58] FIG. 1 is an exploded view of an earphone according to an embodiment of the present application. [Figure 59] FIG. 59 is a schematic diagram of the earphone of FIG. 58 from another perspective. [Figure 60] 1 is a cross-sectional view of an embodiment of an earphone according to the present application. [Figure 61] 1 is a frequency response curve of sound leakage of an embodiment of the present application when two earphones are not worn. [Figure 62] FIG. 28 is a cross-sectional view of one embodiment of the earphone of FIG. 27. DETAILED DESCRIPTION OF THE INVENTION

[0416] The present application will be described in more detail below with reference to the drawings and examples. Note that the following examples are merely for the purpose of illustrating the present application and are not intended to limit the scope of the present application. Similarly, the following examples are merely some of the examples of the present application, and not all of the examples. All other examples that can be obtained by a person skilled in the art without making any creative efforts are included in the scope of protection of the present application.

[0417] A reference to an "embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Those skilled in the art can explicitly or implicitly understand that the embodiment described in this application can be combined with other embodiments.

[0418] In the present application, the earphone 10 may include a core module 11 that generates at least bone-conducted sound and that contacts the user's skin (e.g., cheek) when worn, allowing the ear canal of the user's ear to be "open." In other words, as will be described later as an example, when the ear canal of the user's ear is open and not blocked or obstructed by the earphone 10, the earphone 10 may generate air-conducted sound. In this case, the sound generated by the earphone 10 may be primarily bone-conducted sound with air-conducted sound as a supplement; that is, the air-conducted sound enhances the bone-conducted sound, further improving the sound quality of the earphone 10.

[0419] Note that bone-conducted sound, as described herein, refers to mechanical vibrations generated in the core module 11 being transmitted primarily through a medium such as the user's skull, while air-conducted sound, as described herein, refers to mechanical vibrations generated in the core module 11 being transmitted primarily through a medium such as air. Furthermore, two core modules 11 may be installed in the present application, and both core modules 11 can convert electrical signals into mechanical vibrations so that the earphones 10 can achieve a stereo effect. Therefore, in other applications where the requirement for stereo is not particularly high, such as providing hearing aids for hearing-impaired patients or providing lines to a host during a live broadcast, only one core module 11 may be installed in the earphones 10, and the removed core module 11 may be replaced with a structural member that assists in wearing the earphones 10.

[0420] 1, the core module 11 may include a core housing 111 and an energy conversion device 112 installed in the receiving cavity 100 of the core housing 111, where the energy conversion device 112 converts an electrical signal into a mechanical vibration. In this case, the core module 11 can transmit the mechanical vibration generated by the energy conversion device 112 mainly through bone conduction, and further form bone-conducted sound.

[0421] In some embodiments, when the earphones 10 are worn, the core module 11 may be in direct contact with the user's skin via the core housing 111. That is, the core module 11 directly transmits mechanical vibrations generated in the energy conversion device 112 via the core housing 111. In this way, the earphones 10 do not need to include structural members such as a first vibration transmission sheet 113 or a diaphragm 114, which will be described later. At the same time, the core housing 111 also vibrates the air outside the earphones 10, further causing sound leakage. In this case, to reduce sound leakage from the earphones 10, the core housing 111 may be provided with a through-hole (which may be defined as a "sound leakage reduction hole") that connects the accommodating cavity 100 to the outside of the earphones 10. This allows sound waves output to the outside of the earphones 10 via the sound leakage reduction hole and sound leakage generated by the core housing 111 due to vibrations of the energy conversion device 112 to be offset in antiphase in the far field (commonly known as "sound leakage reduction by perforation").

[0422] In some other embodiments, the core module 11 may further include a first vibration transmission sheet 113 and a vibration panel 114. The energy conversion device 112 may be suspended within the accommodating cavity 100 via the first vibration transmission sheet 113, and the vibration panel 114 may be at least partially located outside the accommodating cavity of the core housing 11, connected to the energy conversion device 112, and transmit mechanical vibrations generated by the energy conversion device 112 to the user. Accordingly, one end of the core housing 111 close to the vibration panel 114 has an open structure. In this case, in the worn state, the core module 11 can contact the user's skin via the vibration panel 114, i.e., the core module 11 transmits mechanical vibrations generated by the energy conversion device 112 via the vibration panel 114. At the same time, due to the presence of the first vibration transmission sheet 113, the mechanical vibration generated by the energy conversion device 112 may be reduced and may not be transmitted to the core housing 111, thereby preventing the core housing 111 from vibrating the air outside the earphone 10 as much as possible, and further reducing sound leakage from the earphone 10. Naturally, sound leakage reduction by drilling holes may further reduce sound leakage from the earphone 10.

[0423] 1 , the core module 11 similarly transmits mechanical vibrations generated by the energy conversion device 112 via the diaphragm 114, except that the end of the core housing 111 adjacent to the diaphragm panel 114 does not have to have an open structure, i.e., the other portions other than the mounting holes 1111 described below may have a sealed structure. In this case, the core housing 111 itself can reduce sound leakage from the earphone 10 based on an acoustic dipole, reducing the need, and in some cases eliminating, the need to drill a separate sound leakage reduction hole in the core housing 111. As shown in FIG. 42 , frequency response curves 42_1 and 42_2 represent the sound leakage from the earphone 10 when the end of the core housing 111 adjacent to the diaphragm panel 114 has an open structure and when the end of the core housing 111 adjacent to the diaphragm panel 114 has a sealed structure, respectively. Obviously, sound leakage from the earphone 10 is significantly reduced when the end of the core housing 111 closest to the diaphragm panel 114 has a sealed structure compared to when the end of the core housing 111 closest to the diaphragm panel 114 has an open structure.

[0424] For example, the core module 11 may further include a connecting member 115 connecting the diaphragm 114 and the energy conversion device 112, and the core housing 111 has a mounting hole 1111 for mounting the connecting member 115. In this case, the diaphragm 114 is located outside the core housing 111 so as to contact the user's skin, and the connecting member 115 has one end connected to the diaphragm panel 114 and the other end inserted into the core housing 111 through the mounting hole 1111 and connected to the energy conversion device 112. In this way, even if a portion of the mechanical vibrations generated in the energy conversion device 112 are transmitted to the core housing 111 via the first vibration transmission sheet 113, the first end wall 1113 and the second end wall 1114 have opposite phases of sound leakage generated by the vibration of the energy conversion device 112, and the two are offset in opposite phases in the far field, further reducing sound leakage from the earphone 10. Based on this, the core housing 111 may have fewer or even no sound leakage reduction holes, further improving the waterproof and dustproof performance of the earphone 10. Preferably, when viewed from the vibration direction of the energy conversion device 112, the area of ​​the diaphragm 114 is larger than the area of ​​the mounting hole 1111, which is larger than the area of ​​the connecting member 115. In this way, mechanical vibrations generated by the energy conversion device 112 are prevented from being transmitted to the core housing 111 via the connecting member 115, further reducing sound leakage from the earphone 10. In this case, the gap between the connecting member 115 and the wall surface of the mounting hole 1111 forms a Helmholtz resonant cavity in cooperation with the accommodating cavity 100, and the resonant frequency of the Helmholtz resonant cavity may be 4 kHz or less, preferably 2 kHz or less, and more preferably 1 kHz or less.

[0425] For example, the core housing 111 may include an inner cylindrical wall 1112 and a first end wall 1113 and a second end wall 1114 connected to both ends of the inner cylindrical wall 1112, respectively. The inner cylindrical wall 1112 is located on the outer periphery of the energy conversion device 112, and the first end wall 1113 and the second end wall 1114 are located on opposite sides of the energy conversion device 112 in the vibration direction of the energy conversion device 112, respectively, and surround the receiving cavity 100 together with the inner cylindrical wall 1112. When viewed from the vibration direction of the energy conversion device 112, the cross section of the inner cylindrical wall 1112 may be any one of a circular, elliptical, racetrack, polygonal, etc., and may naturally be entirely or partially irregular. Furthermore, in a worn state, the first end wall 1113 is closer to the user's skin than the second end wall 1114. In this case, the mounting holes 1111 are provided in the first end wall 1113. Of course, in some other embodiments, such as when the need for sound leakage reduction is not as strict or when sound leakage is reduced by drilling holes, the core housing 111 may not include the first end wall 1113 and / or the second end wall 1114, and the side of the energy conversion device 112 away from the diaphragm 114 may be protected by another structural member (e.g., the adapter housing 13 described below). In some other embodiments, such as when the core module 11 does not have a diaphragm panel 114, the core housing 111 may come into direct contact with the user's skin via the first end wall 1113.

[0426] The inventors of the present application discovered the following during a long period of research and development. As shown in FIG. 61, frequency response curves 61_1 and 61_2 in FIG. 61 represent sound leakage from the earphone 10 when the core housing 111 has a large volume and when the core housing 111 has a small volume, respectively. Clearly, sound leakage from the earphone 10 is significantly reduced when the core housing 111 has a small volume compared to when the core housing 111 has a large volume. For example, sound leakage within the frequency range of 1 kHz to 2 kHz is significantly reduced, and sound leakage within the frequency range of 3 kHz to 4 kHz is significantly reduced, both of which are frequency ranges to which the human ear is sensitive. Because sound leakage within the 1 kHz to 2 kHz frequency range contains many voice components and significantly affects the user's subjective perception, maintaining sound leakage within this frequency range at a low level can enhance the market competitiveness of the earphone 10. Based on this, when the core housing 111 satisfies the condition for accommodating the energy conversion device 112, the volume of the core housing 111 is set to 3 cm to reduce sound leakage from the earphone 10. 3 or less. The volume of the core housing 111 can be measured by pouring water therein. Furthermore, the volume of the core housing 111 can be changed by adjusting the radial dimension of the inner cylindrical wall 1112 in a direction perpendicular to the vibration direction of the energy conversion device 112 or by adjusting the radial gap between the inner cylindrical wall 1112 and the energy conversion device 112 in a direction perpendicular to the vibration direction of the energy conversion device 112. For example, when the condition that the energy conversion device 112 does not collide with the core housing 111 during vibration is satisfied, the radial dimension or the radial gap can be made as small as possible, thereby reducing sound leakage from the earphone 10. In addition, the impact resistance of the earphone 10 can be improved because a small radial dimension or a small radial gap allows the energy conversion device 112 to have a small movement stroke in the event of an impact such as being dropped, which reduces deformation of structural members such as the first vibration transmission sheet 113 and the second vibration transmission sheet 1122, making plastic deformation or breakage less likely to occur, and improving reliability.

[0427] The energy conversion device 112 is suspended within the receiving cavity 100 via the first vibration transmission sheet 113. For example, the energy conversion device 112 is connected to the central region of the first vibration transmission sheet 113, and the peripheral region of the first vibration transmission sheet 113 is connected to the core housing 111. The relative position of the first vibration transmission sheet 113 can be reasonably adjusted according to actual needs. For example, the first vibration transmission sheet 113 is located within the receiving cavity 100. Specifically, the first vibration transmission sheet 113 is located on the side of the first end wall 1113 that is closest to the second end wall 1114. In other words, when viewed from the vibration direction of the energy conversion device 112, the area of ​​the mounting hole 1111 may be smaller than the area of ​​the first vibration transmission sheet 113, and here the area of ​​the first vibration transmission sheet 113 may be defined as the area of ​​a region surrounded by the maximum outer periphery boundary of the orthogonal projection of the first vibration transmission sheet 113 along the vibration direction of the energy conversion device 112. Also, for example, the first vibration transmission sheet 113 may be located within the mounting hole 1111, or a portion of the first vibration transmission sheet 113 may be located within the accommodating cavity 100 and another portion may be located within the mounting hole 1111, or a portion of the first vibration transmission sheet 113 may be located within the accommodating cavity 100, a portion may be located within the mounting hole 1111, and another portion may be located outside the core housing 111. 1, the present application exemplarily describes an example in which the first vibration-transmitting sheet 113 is positioned within the receiving cavity 100, so that the core housing 111 itself can reduce sound leakage from the earphone 10 based on the acoustic dipole. Note that, compared to when the first vibration-transmitting sheet 113 is positioned in the mounting hole 1111, when the first vibration-transmitting sheet 113 is positioned within the receiving cavity 100, the earphone 10 can achieve a better sound leakage reduction effect.This is mainly because the area of ​​the first vibration transmission sheet 113 along the vibration direction of the energy conversion device 112 is larger than the area of ​​the connecting member 115 along the vibration direction of the energy conversion device 112, and when the first vibration transmission sheet 113 is positioned within the mounting hole 1111, the area of ​​the first end wall 1113 along the vibration direction of the energy conversion device 112 becomes significantly smaller.As such, the difference in rigidity between the first end wall 1113 and the second end wall 1114 is likely to become large, which is unfavorable for the two to form an acoustic dipole.

[0428] In some embodiments, the accommodating cavity 100 may communicate with the outside of the earphone 10 only through the first passage, which is the gap between the connecting member 115 and the wall surface of the mounting hole 1111. In other words, the core housing 111 does not have a sound leakage reduction hole. In this case, the earphone 10 reduces sound leakage by canceling out sound leakage generated by the first end wall 1113 and the second end wall 1114 in antiphase in the far field. Note that, as shown in FIG. 8 , when a Helmholtz resonant cavity 200 is installed in the core module 11, a through-hole communicating between the accommodating cavity 100 and the Helmholtz resonant cavity 200 may be formed in the core housing 111, and the through-hole may be formed in the inner cylindrical wall 1112 and / or the second end wall 1114. In this case, the Helmholtz resonant cavity 200 communicates with the accommodating cavity 100 only through the aforementioned through-hole, and does not communicate with the outside of the earphone 10 through any other passage, so it can be considered that the accommodating cavity 100 communicates with the outside of the earphone 10 only through the first passage.

[0429] In some other embodiments, such as when an acoustic filter 300 is installed in the core module 11, the accommodating cavity 100 communicates with the outside of the earphone 10 only via a first passage, which is a gap between the connecting member 115 and the wall surface of the mounting hole 1111, and a second passage, which communicates with the outside of the earphone 10 via the acoustic filter 300, as shown in Fig. 9. In this case, in addition to the mounting hole 1111, a through hole is installed in the core housing 111 that communicates between the accommodating cavity 100 and the acoustic filter 300, but this through hole serves a different purpose from the sound leakage reduction hole, and the two should not be confused.

[0430] In some other embodiments, the accommodating cavity 100 may communicate with the outside of the earphone 10 only through a first passage, which is a gap between the connecting member 115 and the wall surface of the mounting hole 1111, and a second passage, the ratio of the opening area of ​​the second passage to the opening area of ​​the first passage being 10% or less. In addition to reducing sound leakage with an acoustic dipole, the second passage may also be used as a sound leakage reduction hole to further adjust or optimize sound leakage of the earphone 10. In this case, the core housing 111 itself reduces sound leakage of the earphone 10 based on an acoustic dipole, reducing sound leakage of the earphone 10 to a level that is acceptable to the user. Therefore, the opening area of ​​the second passage is also significantly smaller than the opening area of ​​a sound leakage reduction hole formed solely by reducing sound leakage through drilling in related art, which is advantageous for meeting the waterproof and dustproof needs of the earphone 10. Naturally, the second passage may be used as an external hole instead of an acoustic hole such as a sound leakage reduction hole. For example, in an embodiment in which the earphone 10 includes two core modules 11, a microphone is installed in one core module 11 and a microphone hole is installed in its core housing 111, and a microphone is not installed in the other core module 11, but an external hole corresponding to the microphone hole is installed in its core housing 111. Alternatively, the second passage may simply be a through-hole formed in the core housing 111 with no other use.

[0431] Furthermore, compared to when the core module 11 directly contacts the user's skin via the core housing 111, better adhesion can be achieved when the core module 11 contacts the user's skin via the diaphragm 114. This is because the first vibration transmission sheet 113 has a certain elasticity, and the energy conversion device 112, diaphragm 114, etc. are suspended within the accommodating cavity 100 via the first vibration transmission sheet 113. In a worn state, the first vibration transmission sheet 113 allows the diaphragm panel 114 to generate a certain angle of deflection with respect to the core housing 111 according to the contours of the skin when it contacts the user's skin, thereby allowing the diaphragm panel 114 to more closely contact the user's skin. This is advantageous for reducing the loss of transmission of mechanical vibrations of the energy conversion device 112 by the diaphragm panel 114 to a medium such as the user's skull, and further enhancing bone-conducted sound. Furthermore, when the diaphragm 114 vibrates along with the energy conversion device 112, it also vibrates the air outside the earphone 10, and the phases of the opposing sides are opposite, and the two are similarly offset by opposite phases in the far field, further reducing sound leakage from the earphone 10.

[0432] Generally, the resonant frequency (f) of a structure, its stiffness (K), and its mass (m) satisfy the relationship f∝(K / m). Stiffness may also be referred to as the elastic coefficient, spring constant, etc. Obviously, for the same mass, the greater the stiffness of a structure, the higher its resonant frequency. In addition, the greater the stiffness of a structure, the fewer higher-order modes the structure vibrates, which is beneficial for improving sound quality. The stiffness (K) of a structure is related to factors such as its material (specifically, Young's modulus (E)) and specific structural form. Generally, the stiffness (K) of a structure, the Young's modulus (E) of the material, the thickness (t) of the structure, and the area (S) of the structure satisfy the relationship K∝(E·t) / S. Obviously, the smaller the area (S) of the structure, the greater the stiffness (K) of the structure, and the greater the thickness (t) of the structure. Therefore, increasing the Young's modulus (E) of the material, increasing the thickness (t) of the structure, or decreasing the area (S) of the structure, either alone or in combination, is beneficial for increasing the stiffness (K) of the structure and further for increasing the resonant frequency and reducing the higher-order modes of vibration of the structure. Based on this, the Young's modulus of the first end wall 1113 and the second end wall 1114 may each be 2000 MPa or more, preferably 3000 MPa or more, and / or the thickness of the first end wall 1113 and the second end wall 1114 may each be 0.3 mm to 3 mm, preferably 0.5 mm to 2.5 mm, and / or the area of ​​the first end wall 1113 and the second end wall 1114 may each be 200 mm or less to ensure sufficient rigidity of both walls. 2 ~500mm 2 and preferably 300 mm 2 ~400mm 2In this way, the higher-order modes of vibration of the first end wall 1113 and the second end wall 1114 can be minimized, and the resonant frequencies of the sound leakage generated by the first end wall 1113 and the second end wall 1114 can be offset to as high a frequency band as possible, for example, 4 kHz or higher, so that users are less sensitive to sound leakage. Furthermore, the difference between the rigidity of the first end wall 1113 and the rigidity of the second end wall 1114 can be small, so that the resonant frequencies of the sound leakage generated by the first end wall 1113 and the second end wall 1114 can be as close as possible, and the two can be better canceled out in antiphase in the far field, reducing sound leakage from the earphone 10. Similarly, the Young's modulus of the diaphragm panel 114 may be 3000 MPa or more, preferably 4000 MPa or more, and / or the thickness of the diaphragm panel 114 may be 0.3 mm to 3 mm, preferably 0.5 mm to 2.5 mm, and / or the area of ​​the diaphragm panel 114 may be 130 mm or less so as to sufficiently increase the rigidity of the diaphragm panel 114 and further reduce higher modes when the diaphragm panel 114 vibrates as much as possible. 2 ~400mm 2 and preferably 140 mm 2 ~300mm 2 may be.

[0433] For example, the ratio of the area of ​​the mounting hole 1111 to the area of ​​the first end wall 1113, as viewed in the vibration direction of the energy conversion device 112, may be 0.6 or less, and preferably 0.5 or less. In this way, when the mounting hole 1111 meets the mounting needs of the connecting member 115, the rigidity of the first end wall 1113 and the rigidity of the second end wall 1114 are as close as possible, so that the resonance frequencies of the sound leakage generated by the first end wall 1113 and the second end wall 1114 are as close as possible. Furthermore, the ratio of the difference between the area of ​​the mounting hole 1111 and the area of ​​the connecting member 115 to the area of ​​the mounting hole 1111, as viewed in the vibration direction of the energy conversion device 112, may be greater than 0 and less than 0.5, and preferably greater than 0 and less than 0.4. In this way, when the mounting holes 1111 allow the connecting member 115 and the diaphragm 114 to move relative to the core housing 111, the gap between the connecting member 115 and the first end wall 1113 is minimized, which prevents the air in the receiving cavity 100 from transmitting sound waves generated by the vibration of the energy conversion device 112 to the outside of the earphone 10 through the mounting holes 1111, causing sound leakage, i.e., suppressing the cavity sound effect and further reducing sound leakage from the earphone 10. Naturally, the phase of the sound waves transmitted to the outside of the earphone 10 through the mounting holes 1111 may be opposite to the phase of one of the sound leakages generated by the first end wall 1113 and the second end wall 1114, so that the sound waves transmitted to the outside of the earphone 10 through the mounting holes 1111 can further adjust the cancellation of the sound leakages generated by the first end wall 1113 and the second end wall 1114 due to the opposite phase in the far field, thereby further reducing sound leakage from the earphone 10.

[0434] Illustratively, the opening shape of the mounting hole 1111 and the cross-sectional shape of the connecting member 115 may be the same regular shape. For example, the opening shape of the mounting hole 1111 and the cross-sectional shape of the connecting member 115 are corresponding polygons such as regular polygons. That is, if the cross-sectional shape of the connecting member 115 is a square, a regular hexagon, or the like, the opening shape of the mounting hole 1111 is also a square, a regular hexagon, or the like. Also, for example, the opening shape of the mounting hole 1111 and the cross-sectional shape of the connecting member 115 are corresponding circles, ellipses, or the like. Furthermore, when the mounting hole 1111 allows the connecting member 115 and the diaphragm panel 114 to move relative to the core housing 111, the gap between the connecting member 115 and the first end wall 1113 (specifically, the wall surface of the mounting hole 1111) may be greater than 0 mm and less than 2 mm, preferably greater than 0 mm and less than 1 mm, more preferably greater than 0.1 mm and less than 1 mm, so that the gap between the connecting member 115 and the first end wall 1113 is as small as possible. When there are a plurality of mounting holes 1111 and a plurality of connecting members 115, each of which corresponds to the other, the gap between the connecting members 115 and the wall surface of the mounting hole 1111 may be defined as the sum of the gaps formed by the plurality of connecting members 115 and the wall surface of the corresponding mounting hole 1111, as shown in FIGS. 2(b) and 2(c), for example. Naturally, in some other embodiments, the opening shape of the mounting hole 1111 and the cross-sectional shape of the connecting member 115 may be different regular shapes. For example, if the cross-sectional shape of the connecting member 115 is a regular polygon such as a square or a regular hexagon, the opening shape of the mounting hole 1111 may be circular. Conversely, if the cross-sectional shape of the connecting member 115 is circular, the opening shape of the mounting hole 1111 may be a regular polygon such as a square or a regular hexagon. In other embodiments, the opening shape of the mounting hole 1111 and the cross-sectional shape of the connecting member 115 may be other irregular structural shapes. As shown in FIG. 2, the present application exemplarily describes an example in which the cross-sectional shape of the connecting member 115 is circular, and accordingly, the opening shape of the mounting hole 1111 is also circular.

[0435] 2(a), the number of connecting members 115 may be one, and the connecting member 115 may be connected to the central region of the diaphragm panel 114. In this case, the number of mounting holes 1111 may be one, and the connecting member 115 is drilled in the mounting hole 1111. In this way, under the same conditions, the communication area between the mounting hole 1111 and the outside of the core housing 111 can be minimized, and sound leakage caused by sound waves generated by the air in the accommodating cavity 100 due to vibration of the energy conversion device 112 being transmitted to the outside of the earphone 10 through the mounting hole 1111 can be minimized.

[0436] In some other embodiments, for example, in FIG. 2(b), the number of connecting members 115 may be multiple, for example, three or four, and the multiple connecting members 115 are installed at intervals around a center line (for example, as shown at O ​​in FIG. 2(b)) parallel to the vibration direction of the energy conversion device 112 of the diaphragm panel 114. In this case, the number of mounting holes 1111 may be multiple, and the multiple connecting members 115 are connected to the energy conversion device 112 through a corresponding mounting hole 1111, respectively. This is advantageous in improving the reliability of the connection between the connecting members 115 and the diaphragm panel 114 and the energy conversion device 112. Furthermore, the centers of the multiple connecting members 115 may be located on the same circle (i.e., a co-circle), and the center of the circle (for example, as shown at O ​​in FIG. 2(b)) may be located on a center line parallel to the vibration direction of the energy conversion device 112 of the diaphragm panel 114. The multiple connection members 115 may be installed at uniform intervals around a center line parallel to the vibration direction of the energy conversion device 112 of the diaphragm panel 114 .

[0437] 2(c), the number of connecting members 115 may be multiple, for example, four, five, etc., one of which is connected to the central region of the diaphragm panel 114, and the remaining connecting members 115 are installed at intervals around the connecting member 115 located in the central region of the diaphragm panel 114. In this case, the number of mounting holes 1111 may be multiple, and the multiple connecting members 115 are connected to the energy conversion device 112 via one corresponding mounting hole 1111, respectively. In this way, it is also advantageous to improve the reliability of the connecting members 115 connecting the diaphragm panel 114 and the energy conversion device 112.

[0438] 1, FIG. 2 can be simply regarded as an orthogonal projection of the diaphragm panel 114 and the connecting member 115 along the vibration direction of the energy conversion device 112.

[0439] In some embodiments, the accommodating cavity 100 communicates with the outside of the earphone 10 through a passage, which is a gap between the connecting member 115 and the wall of the mounting hole 1111. In this case, the core module 11 may include a sealing membrane 118, which seals the passage. That is, the gap between the connecting member 115 and the wall of the mounting hole 1111 may be sealed by the sealing membrane 118, thereby preventing sound waves conducted by the air formed in the accommodating cavity 100 from propagating to the outside of the earphone 10 through the passage and causing sound leakage. The material of the sealing membrane 118 may be rubber, silicone rubber, polyvinyl chloride (PVC), polycarbonate (PC), or poly(ether-ether-ketone) (PEEK).

[0440] 35 , the sealing membrane 118 may include a first connecting portion 1181, a corrugated portion 1182, and a second connecting portion 1183 that are integrally connected, and the corrugated portion 1182 forms a recessed area between the first connecting portion 1181 and the second connecting portion 1182. In this case, the first connecting portion 1181 may be connected to the first end wall 1113, and the second connecting portion 1183 may be connected to the connecting member 115 or the diaphragm panel 114. Thus, compared with a planar thin film structure (e.g., the portion where the recessed region is located is planar), the wrinkled non-planar thin film structure is advantageous in increasing the elasticity of the sealing film 118, thereby preventing excessive transmission of mechanical vibrations generated by the energy conversion device 112 to the core housing 111 through the sealing film 118, and in preventing the sealing film 118 from being "torn off" due to excessive relative movement between the connecting member 115 or diaphragm 114 and the core housing 111, or from being "broken" due to excessively large or small sound pressure in the accommodating cavity 100, or from fatigue fracture of the sealing film 118 due to excessive changes in sound pressure in the accommodating cavity 100. In addition, a decompression hole may be provided in the core housing 111, which balances the sound pressure in the accommodating cavity 100 and maintains it at a level that does not vary significantly with atmospheric pressure, thereby extending the service life of the sealing film 118. The area of ​​the pressure reduction hole is 4mm 2 In addition, the installation of the sealing membrane 118 is advantageous in increasing the gap between the connecting member 115 and the wall surface of the mounting hole 1111, i.e., the opening area of ​​the mounting hole 1111 may be set larger than the cross-sectional area of ​​the connecting member 115, which is advantageous in avoiding unnecessary wear between the connecting member 115 and the core housing 111 and in extending the service life of the core module 11.

[0441] 46 and 35, the sealing film 118 may be connected only to the first end wall 1113, that is, a gap may remain between the sealing film 118 and the connecting member 115, but this gap is smaller than the gap between the connecting member 115 and the wall surface of the mounting hole 1111, thus not only reducing the communication area between the accommodating cavity 100 and the outside of the earphone 10, but also advantageously balancing the sound pressure within the accommodating cavity 100 and maintaining it at a level that does not change significantly with atmospheric pressure.

[0442] Based on the above related description, in the process in which the energy conversion device 112 generates mechanical vibrations, the core housing 111 (specifically, may be the first end wall 1113 and the second end wall 1114) and the diaphragm 114 can further form multiple pairs of acoustic dipoles, that is, two acoustic dipoles with opposite phases cancel each other out, further reducing sound leakage from the earphone 10. Based on this, the ratio of the absolute value of the difference between the rigidity of the diaphragm 114 and the rigidity of the first end wall 1113 to the larger of the rigidity of the diaphragm 114 and the first end wall 1113 may be 0 to 0.4, preferably 0 to 0.3, and / or the ratio of the absolute value of the difference between the rigidity of the diaphragm 114 and the rigidity of the second end wall 1114 to the larger of the rigidity of the diaphragm 114 and the second end wall 1114 may be 0 to 0.4, preferably 0 to 0.3. In this way, the resonant frequency of the sound leakage generated by the diaphragm panel 114 and the resonant frequency of the sound leakage generated by the first end wall 1113 and / or the second end wall 1114 are as close as possible, so that the two are better canceled out in antiphase in the far field, and the sound leakage of the earphone 10 can be further reduced.

[0443] For example, the ratio of the area of ​​diaphragm panel 114 to the area of ​​first end wall 1113, as viewed from the vibration direction of energy conversion device 112, may be 0.3 to 1.6, and preferably 0.5 to 1.2. In other words, after the structure of core housing 111 is determined, the difference between the area of ​​diaphragm panel 114 and the area of ​​first end wall 1113 does not need to be large, so that the rigidity of diaphragm panel 114 and the rigidity of first end wall 1113 are as close as possible. In addition, if the area of ​​the diaphragm 114 is too small, it may affect the transmission of mechanical vibrations generated by the energy conversion device 112 by the diaphragm 114, which may further affect the intensity of the bone-conducted sound generated by the earphone 10; the contact area between the user's skin and the core module 11 may be too small, which may cause poor fit and further affect the wearing comfort of the earphone 10; if the area of ​​the diaphragm 114 is too large, it may affect the rigidity of the diaphragm 114, which may further affect the sound quality of the earphone 10; the diaphragm 114 may be too affected by the contours of the skin, which may make it difficult for the diaphragm 114 to fit closely to the user's skin, which may further affect the intensity of the bone-conducted sound generated by the earphone 10.

[0444] Generally, for an acoustic dipole, the smaller the distance between two monopoles with opposite phases, the more significant the effect of anti-phase cancellation, i.e., the smaller the sound pressure in the far field, and accordingly the less sound leakage in the far field for the earphone 10. Naturally, considering the structural strength of the diaphragm 114, the structural interference between the diaphragm 114 and the core housing 111 during the vibration process of the energy conversion device 112, and the space requirements for installing structural members such as the energy conversion device 112 within the core housing 111, it is difficult to make the distance between the two monopoles zero. Therefore, in the vibration direction of the energy conversion device 112, the thickness of the diaphragm panel 114 may be 0.3 mm to 3 mm, preferably 0.5 mm to 2.5 mm, and if the thickness is too small, it will be disadvantageous for the diaphragm panel 114 to have sufficient rigidity, and / or the gap between the diaphragm panel 114 and the first end wall 1113 may be 0.5 mm to 3 mm, preferably 1 mm to 2 mm, and if the gap is too small, the diaphragm panel 114 will be more likely to collide with the core housing 111, causing distortion, and / or the distance between the side of the first end wall 1113 away from the second end wall 1114 and the side of the second end wall 1114 away from the first end wall 1113 may be 6 mm to 16 mm.

[0445] 3, the core module 11 may further include an enclosing member 116 connected to one end of the core housing 111 close to the diaphragm panel 114. For example, the enclosing member 116 may be connected to one end of the inner cylindrical wall 1112 away from the second end wall 1114, or for example, the enclosing member 116 may be connected to the first end wall 1113. The enclosing member 116 can enclose the diaphragm panel 114 to prevent it from falling off. In other words, the enclosing member 116 is connected to the core housing 111, and the projection of the enclosing member 116 onto a reference plane perpendicular to the vibration direction of the energy conversion device 112 surrounds the outer periphery of the projection of the diaphragm panel 114 onto the reference plane. When not worn, the enclosing member 116 is installed at a distance from the diaphragm panel 114 in a direction perpendicular to the vibration direction of the energy conversion device 112 so as to prevent the enclosing member 116 from hindering the diaphragm panel 114 from vibrating in conjunction with the energy conversion device 112, and at least a portion of the side of the diaphragm panel 114 away from the energy conversion device 112 protrudes from the side of the enclosing member 116 away from the energy conversion device 112 in the vibration direction of the energy conversion device 112, thereby allowing the diaphragm panel 114 to be in close contact with the user's skin and further increasing the intensity of the bone-conducted sound generated by the earphone 10. Furthermore, in the worn state, in addition to the diaphragm 114 contacting the user's skin, the surrounding member 116 may also contact the user's skin. That is, at least a portion of the surrounding member 116 contacts the user's skin together with the diaphragm 114, and shares part of the pressing force applied by the core module 11 to the user's skin. This causes the diaphragm 114 to vibrate along with the energy conversion device 112, further improving the sound quality of the earphones 10, particularly in the low-frequency range. In other words, providing the surrounding member 116 on the core module 11 is advantageous for achieving both wearing stability and comfort, as well as sound quality. Therefore, the pressing force of the diaphragm 114 against the user's cheek may be smaller than the pressing force applied by the head beam assembly 12 (described later) when pressing the core module 11 against the user's cheek, and the contact area between the diaphragm 114 and the user's cheek may be smaller than the contact area between the core module 11 and the user's cheek.When the core module 11 is provided with an enclosing member 116, the pressure with which the core module 11 is pressed against the user's cheek may be equal to the sum of the pressure of the vibrating panel 114 against the user's cheek and the pressure of the enclosing member 116 against the user's cheek, and the contact area between the core module 11 and the user's cheek may be equal to the sum of the contact area between the vibrating panel 114 and the user's cheek and the contact area between the enclosing member 116 and the user's cheek; when the core module 11 is not provided with an enclosing member 116 and contacts the user's cheek only via the vibrating panel 114, the pressure with which the core module 11 is pressed against the user's cheek may be equal to the pressure of the vibrating panel 114 against the user's cheek, and the contact area between the core module 11 and the user's cheek may be equal to the contact area between the vibrating panel 114 and the user's cheek. Based on this, the head beam assembly 12 described later can apply a pressing force of 0.4N to 0.8N to press the core module 11 against the user's cheek, the pressing force of the vibration panel 114 against the user's cheek may be 0.1N to 0.7N, and the contact area between the core module 11 and the user's cheek is 400mm. 2 ~600mm 2 and preferably 450 mm 2 ~550mm 2 The contact area between the vibration panel 114 and the user's cheek may be 180 mm 2 ~300mm 2 and preferably 160 mm 2 ~280mm 2 may be.

[0446] Furthermore, the side of the core housing 111 closest to the diaphragm panel 114, the diaphragm panel 114 and the surrounding member 116 may be formed to surround the cavity 400; for example, the surrounding member 116 may be formed to surround the cavity 400 together with the first end wall 1113 and the diaphragm panel 114, and the surrounding member 116 may be provided with a communication hole 1161 that connects the cavity 400 to the outside of the core module 11, so that when installed, the cavity 400 is connected to the outside of the core module 11 via the communication hole 1161. In other words, the enclosing member 116 may be provided with a communication hole 1161 that connects the gap between the diaphragm 114 and the core housing 111 (e.g., the first end wall 1113) to the outside of the earphone 10, so that the sound leakage generated by the first end wall 1113 and the sound leakage generated by the second end wall 1114 are cancelled out in antiphase in the far field, i.e., the sound leakage generated by the opposing sides of the core housing 111 are cancelled out in antiphase in the far field, which can better meet the need for reducing sound leakage of the earphone 10. The number of communication holes 1161 may be plural. For example, the plurality of communication holes 1161 are arranged at intervals around the connecting member 115. For example, the aperture ratio of the communication holes 1161 in the surrounding member 116 is 30% or more so that sound leakage caused by the first end wall 1113 is propagated more and offsets sound leakage caused by the second end wall 1114 in the far field in antiphase. The aperture ratio may be calculated by dividing the product of the area of ​​a single communication hole 1161 and the number of communication holes 1161 by the area of ​​the surrounding member 116. Furthermore, in the worn state, at least some of the plurality of communication holes 1161 do not come into contact with the user's skin so that sound leakage caused by the first end wall 1113 is propagated via the communication holes 1161. Therefore, as shown in FIG. 3, the communicating hole 1161 may be formed on the side surface of the enclosing member 116, or as shown in FIG. 27 or 32, the communicating hole 1161 may be formed in the connecting portion 1162, an escape hole corresponding to the communicating hole 1162 is provided in the first outer tube wall 1115, and the communicating hole 1161 may be formed in a portion of the position limiting portion 1164 that does not come into contact with the user's skin, or as shown in FIG. 52, the communicating hole 1161 may be formed in a portion of the enclosing member 116 that does not come into contact with the user's skin.In addition, because the cavity 400 and the communication holes 1161 can similarly form a Helmholtz resonating cavity, increasing the aperture ratio of the communication holes 1161 in the surrounding member 116 is advantageous in that the resonance peak when the cavity 400 resonates is offset to a higher frequency band, thereby reducing sound leakage felt by the user. Note that, in the worn state, the opening direction of at least one of the communication holes 1161 may be away from the top of the user's head. For example, the included angle between the opening direction of the communication hole 1161 and the user's vertical axis is 0 to 10° so that liquids such as the user's sweat can also flow out through the communication hole 1161, that is, so that sweat and the like are prevented from accumulating within the core module 11. Naturally, the sound leakage generated by the first end wall 1113 is transmitted through the gap between the enclosing member 116 and the vibration panel 114 in a direction perpendicular to the vibration direction of the energy conversion device 112, and may further be cancelled out in antiphase in the far field with the sound leakage generated by the second end wall 1114, as will be explained later by way of example.

[0447] For example, a target frequency range having a section length of at least 1 / 3 octave exists within the frequency range of 500 Hz to 4 kHz. Based on this, within the target frequency range, sound leakage that occurs when the earphone 10 is worn with the communication hole 1161 in the open state is weaker than sound leakage that occurs when the earphone 10 is worn with the communication hole 1161 in the closed state. The target frequency range may be 1 kHz to 2 kHz. Note that the communication hole 1161 being in the closed state may mean that the communication hole 1161 is blocked.

[0448] Furthermore, there may be at least one communication hole 1161 per square millimeter of unit area in the surrounding member 116 so that the number of communication holes 1161 in the surrounding member 116 is sufficiently large, but the area of ​​a single communication hole 1161 is not particularly large, which is advantageous for ensuring the structural strength of the surrounding member 116. Of course, in other embodiments, such as when the structural strength of the surrounding member 116 is sufficient, the area of ​​a single communication hole 1161 may be relatively large.

[0449] In some embodiments, the enclosing member 116 may be a plastic part and may have a thickness of 0.2 mm to 1 mm. If the enclosing member 116 is too thin, it may lack structural strength. If the enclosing member 116 is too thick, it may be more likely to come into contact with the user's skin before the diaphragm 114, making it more difficult for the diaphragm 114 to come into contact with the user's skin. Naturally, to ensure that the diaphragm 114 can come into contact with the user's skin, the portion of the enclosing member 116 that comes into contact with the user's skin may be thicker than the other portions. For example, the thickness of the portion of the enclosing member 116 that comes into contact with the user's skin may be greater than 1 mm to prevent the enclosing member 116 from being crushed when worn. Furthermore, if the enclosing member 116 is a plastic part, the plastic part may be molded into a metal frame by an injection molding process to provide structural reinforcement for the enclosing member 116.

[0450] In some embodiments, the enclosing member 116 may be a metal part that allows the open area ratio of the communication holes 1161 in the enclosing member 116 to be 60% or more, primarily because metal parts have higher structural strength than plastic parts. For example, the enclosing member 116 is a steel mesh with a mesh count (i.e., the number of mesh holes per inch) of 5 to 508.

[0451] In some embodiments, the core housing 111 may be a first plastic part, the surrounding member 116 may be connected to the core housing 111 via a second plastic part, the second plastic part may be integrally molded with a metal part by an injection molding process, and the communication hole 1161 may be formed in the aforementioned metal part.

[0452] 43 or 44, the surrounding member 116 has an uneven region on its outer surface facing the user's skin when worn. This prevents the surrounding member 116 from making a perfect contact with the user's skin, leaving a gap between the surrounding member 116 and the user's skin, further allowing communication between the cavity 400 and the outside of the core module 11. In this way, sound leakage caused by the opposing sides of the core housing 111 (e.g., the first end wall 1113 and the second end wall 1114) is similarly canceled out in antiphase in the far field, thereby satisfying the need for reduced sound leakage from the earphone 10. The height difference between the uneven regions may be 0.5 mm to 5 mm to ensure a sufficient communication gap between the cavity 400 and the outside of the core module 11.

[0453] 43 , grooves 1165 may be provided on the outer surface of the surrounding member 116, and in the mounted state, the cavity 400 communicates with the outside of the core module 11 via the grooves 1165. Parameters such as the number and depth of the grooves 1165 affect the communication area between the cavity 400 and the outside of the core module 11. For example, the projection of the surrounding member 116 onto a reference plane perpendicular to the vibration direction of the energy conversion device 112 has a major axis direction and a minor axis direction that are orthogonal to each other, the dimension of the surrounding member 116 in the major axis direction is greater than the dimension of the surrounding member 116 in the minor axis direction, the number of grooves 1165 may be multiple, and the multiple grooves 1165 may be divided into four sets, two sets of grooves 1165 are respectively spaced apart along the major axis direction, and the other two sets of grooves 1165 are respectively spaced apart along the minor axis direction, and the number of grooves 1165 in each set spaced apart along the major axis direction may be greater than the number of grooves 1165 in each set spaced apart along the minor axis direction. For ease of distinction and explanation, the area where the grooves 1165 are located in FIG. 43 is filled with a lattice, i.e., the area where one lattice is located can be simply regarded as one groove 1165. Furthermore, for example, the depth of the recessed groove 1165 may be 0.5 mm to 5 mm.

[0454] In some embodiments, as shown in FIG. 44 , protrusions 1166 may be provided on the outer surface of the enclosing member 116. The protrusions 1166 form a gap between the enclosing member 116 and the user's skin when the enclosing member 116 is worn, and the cavity 400 communicates with the outside of the core module 11 through the gap. Parameters such as the number and height of the protrusions 1166 similarly affect the communication area between the cavity 400 and the outside of the core module 11. For example, the number of protrusions 1166 may be multiple, and the multiple protrusions 1166 form the gap in a lattice pattern. For ease of distinction and explanation, the area where the protrusions 1166 are located in FIG. 44 is filled with the lattice, i.e., the area where one lattice is located can be simply considered to be one protrusion 1166. For example, the height of the protrusions 1166 may be 0.5 mm to 5 mm.

[0455] Similarly, within the frequency range of 500 Hz to 4 kHz, there is a target frequency range with a section length of at least 1 / 3 octave. Based on this, if the outer surface of the enclosing member 116 has an uneven region within the aforementioned target frequency range, the sound leakage that occurs when the earphone 10 is worn is weaker than the sound leakage that occurs when the outer surface of the enclosing member 116 does not have an uneven region. The aforementioned target frequency range is 1 kHz to 2 kHz. Note that the absence of an uneven region on the outer surface of the enclosing member 116 may also mean that the uneven region on the outer surface of the enclosing member 116 is filled. For example, by filling the grooves 1165 or the spaces between the protrusions 1166 with adhesive, the outer surface of the enclosing member 116 can be simply considered to have no uneven region after the adhesive has hardened.

[0456] 45, the enclosing member 116 has a porous structure 1167 disposed on the side facing the user's skin when worn, so that when worn, at least a portion of the porous structure 1167, together with the diaphragm 114, comes into contact with the user's skin, allowing communication between the cavity 400 and the outside of the core module 11. In this way, sound leakage generated by the opposing sides of the core housing 111 (for example, the first end wall 1113 and the second end wall 1114) is similarly canceled out in antiphase in the far field, thereby satisfying the need for reduced sound leakage from the earphones 10.

[0457] Furthermore, the porous structure 1167 may include a fixing layer and a porous body layer connected to the fixing layer, the porous structure 1167 being connected to the surrounding member 116 via the fixing layer, and the porous structure 1167 communicating with the cavity 400 and the outside of the core module 11 via the porous body layer. The porosity of the porous body layer may be 60% or more, for example, the porous body layer being a sponge or foam.

[0458] In some embodiments, the fixing layer of the porous structure 1167 and the enclosing member 116 may be configured to be removably connected, and the connection between them may be any one of magnetic attraction, buckle, and adhesive. The aforementioned adhesive type may be any one of hook-and-loop fasteners, single-sided tape, and double-sided tape.

[0459] In some embodiments, the fixing layer of the porous structure 1167 may be a cured adhesive, i.e., the porous structure 1167 is fixed to the enclosing member 116 by the adhesive. In this case, since the porous structure 1167 is not easy to replace, in order to extend the service life of the porous structure 1167, the porous structure 1167 may include a protective layer covering the porous body layer of the porous structure 1167, and the porous structure 1167 comes into contact with the user's skin through the protective layer. The protective layer may be a fabric or a steel mesh.

[0460] Similarly, within the frequency range of 500 Hz to 4 kHz, there is a target frequency range with a section length of at least 1 / 3 octave. Based on this, within the aforementioned target frequency range, if the core module 11 has the porous structure 1167, the sound leakage that occurs when the earphone 10 is worn is weaker than the sound leakage that occurs when the core module 11 does not have the porous structure 1167. The aforementioned target frequency range is 1 kHz to 2 kHz. Note that not having the porous structure 1167 in the aforementioned core module 11 may mean removing the porous structure 1167 from the surrounding member 116. For example, if the porous structure 1167 is removably connected to the surrounding member 116, the porous structure 1167 can be removed. If the porous structure 1167 is fixed to the surrounding member 116 with an adhesive, the porous structure 1167 can be scraped off with a cutter.

[0461] In an embodiment in which the surrounding member 116 has the grooves 1165, the protrusions 1166, and the porous structure 1167, the surrounding member 116 may also have communication holes 1161 that communicate the cavity 400 with the outside of the core module 11, so that in the mounted state, the cavity 400 further communicates with the outside of the core module 11 via the communication holes 1161. The number of communication holes 1161 may be multiple, and the porosity of the communication holes 1161 in the surrounding member 116 may be 30% or more.

[0462] As shown in FIG. 4 , a gasket 117 may be further installed between the diaphragm panel 114 and the first end wall 1113. The Rockwell hardness of the gasket 117 is lower than that of the first vibration-transmitting sheet 113. In other words, the gasket 117 may be referred to as a soft gasket compared to the first vibration-transmitting sheet 113. This prevents mechanical vibrations generated by the energy conversion device 112 from being transmitted to the core housing 111 through the gasket 117, further reducing sound leakage from the earphone 10. The gasket 117 may have adhesive properties, such as a foam adhesive, to connect the diaphragm panel 114 and the first end wall 1113, which may also prevent the diaphragm panel 114 from falling off.

[0463] The inventors of the present application have discovered the following through extensive research: Adding an enclosing member 116 to the core module 11 is advantageous for offsetting sound leakage to the mid-to-high frequency band, and adding a gasket 117 to the core module 11 is advantageous for offsetting sound leakage to the mid-to-low frequency band, both of which are advantageous for reducing sound leakage. Furthermore, in the present application, the frequency range corresponding to the low frequency band may be 20 to 150 Hz, the frequency range corresponding to the mid frequency band may be 150 to 5 kHz, and the frequency range corresponding to the high frequency band may be 5 kHz to 20 kHz. The frequency range corresponding to the mid-to-low frequency band may be 150 to 500 Hz, and the frequency range corresponding to the mid-to-high frequency band may be 500 to 5 kHz.

[0464] 5 to 7, the side of the diaphragm panel 114 away from the energy conversion device 112 may include a skin contact area 1141 that contacts the user's skin and an air conduction enhancement area 1142, at least a portion of which does not contact the user's skin, and the diaphragm panel 114 may vibrate the air outside the earphone 10 using the air conduction enhancement area 1142 to form sound waves. In other words, the core module 11 generates bone conduction sound and air conduction sound via the diaphragm panel 114, and the two sounds are in phase, allowing the air conduction sound to enhance the bone conduction sound, further improving the sound quality of the earphone 10. At least a portion of the air conduction enhancing region 1142 is inclined relative to the skin contact region 1141 and extends toward the energy conversion device 112. The inclination angle relative to the skin contact region 1141 (e.g., shown as θ in FIGS. 5 and 6) may be 0 to 75°, preferably 0 to 60°, and / or the width of the air conduction enhancing region 1142 as orthogonally projected along the vibration direction of the energy conversion device 112 (e.g., shown as W in FIGS. 5 to 7) may be 1 mm or more, preferably 2 mm or more. In this way, the size of the air conduction enhancing region 1142 is increased, further enhancing the effect of enhancing air-conducted sound over bone-conducted sound. Furthermore, the air conduction enhancing region 1142 may be configured as a curved surface (e.g., shown in FIG. 5) or a flat surface (e.g., shown in FIG. 6).

[0465] In some embodiments, for example as shown in FIG. 5, the air conduction enhancement regions 1142 may all be inclined with respect to the skin contact region 1141 and extend towards the energy conversion device 112.

[0466] 6, a portion of the air conduction enhancing region 1142 is inclined relative to the skin contact region 1141 (i.e., θ≠0) and extends toward the energy conversion device 112, and another portion is spaced apart from the skin contact region 1141 in the vibration direction of the energy conversion device 112, for example, parallel to the skin contact region 1141 (i.e., θ=0). Furthermore, as shown in FIG. 27, when an enclosing member 116 is installed in the core housing 111, the enclosing member 116 may partially overlap the air conduction enhancing region 1142 and be offset from the skin contact region 1141 when viewed from the vibration direction of the energy conversion device 112, so as to stop the vibration panel 114 in the vibration direction of the energy conversion device 112.

[0467] In some other embodiments, as shown in FIG. 7 , in the worn state, at least a portion of the air conduction enhancement region 1142 is directed toward the entrance of the ear canal of the user's ear, thereby allowing sound waves generated by the diaphragm 114 to be directed toward the entrance of the ear canal and further enhancing the effect of enhancing air-conducted sound over bone-conducted sound. Illustratively, the diaphragm 114 has long and short axis directions that are perpendicular to the vibration direction of the energy conversion device 112 and perpendicular to each other, and the dimension of the diaphragm panel 114 in the long axis direction is larger than the dimension of the diaphragm panel 114 in the short axis direction. For example, the diaphragm panel 114 is arranged in an oval, rounded rectangular, or racetrack shape when viewed from the vibration direction. In the worn state, the long axis direction is directed toward the top of the user's head, and the short axis direction is directed toward the entrance of the ear canal of the user's ear. In this way, the core module 11 can be positioned closer to the ear canal overall when worn, and the core module 11 can transmit mechanical vibrations generated by the energy conversion device 112 by bone conduction, causing more air in the ear canal to vibrate along with it (i.e., generating air-conducted sound), further increasing the volume of sound heard by the user.

[0468] 8 to 10, the core module 11 may be provided with an acoustic cavity communicating with the accommodating cavity 100, and the acoustic cavity absorbs acoustic energy of sound waves generated by the air in the accommodating cavity 100 due to vibration of the energy conversion device 112. The sound waves can be output to the outside of the earphone 10 through the mounting hole 1111 to form air-conducted sound.

[0469] In some embodiments, for example, as shown in FIG. 8 , the frequency response curve of the sound wave has a resonant peak, and the acoustic cavity may be a Helmholtz resonant cavity 200, which weakens the intensity of the resonant peak (specifically, the peak resonant intensity), i.e., suppresses a sudden increase in the peak resonant intensity, and improves the sound quality of the earphone 10. The peak resonant frequency of the resonant peak may be 500 Hz to 4 kHz, preferably 1 kHz to 2 kHz. Exemplarily, the Helmholtz resonant cavity 200 may be disposed on the core housing 111, for example, on the second end wall 1114, on a side away from the energy conversion device 112, and / or the Helmholtz resonant cavity 200 may be disposed in the energy conversion device 112 (e.g., its magnetic circuit system). Of course, in some other embodiments, such as emphasizing a certain frequency point or frequency band, the Helmholtz resonant cavity 200 may be configured to attenuate vibration intensity within a predetermined frequency band of the frequency response curve of the air-conducted sound, which may not cover the resonant peak. The difference between the intensity of the resonant peak when the opening connecting the Helmholtz resonant cavity 200 to the receiving cavity 100 is in an open state and the intensity of the resonant peak when the opening connecting the Helmholtz resonant cavity 200 to the receiving cavity 100 is in a closed state may be 3 dB or more, and the corresponding frequency response curve may be measured under a condition where the excitation voltage is 1 V.

[0470] In some other embodiments, for example, as shown in Figures 9 and 10, the acoustic cavity may be an acoustic filter 300, and the cutoff frequency of the acoustic filter 300 may be 5 kHz or less, preferably 4 kHz or less, so as to attenuate the acoustic energy of the frequency band whose frequency is greater than the cutoff frequency. Illustratively, as shown in Figure 9, the acoustic filter 300 may be located on the side of the energy conversion device 112 away from the diaphragm panel 114, that is, it is a rear acoustic filter. As shown in Figure 10, the acoustic filter 300 may be located on the side of the energy conversion device 112 facing the diaphragm panel 114, that is, it is a front acoustic filter. For example, the first end wall 1113 may include a first sub-end wall 11131 and a second sub-end wall 11132 spaced apart in the vibration direction of the energy conversion device 112, the mounting hole 1111 penetrating the first sub-end wall 11131 and the second sub-end wall 11132 along the vibration direction of the energy conversion device 112, and the first sub-end wall 11131 and the second sub-end wall 11132 cooperate with the inner cylinder wall 1112 to form the acoustic filter 300. The gap between the first sub-end wall 11131 and the second sub-end wall 11132 in the vibration direction of the energy conversion device 112 may be 0.5 mm to 5 mm, and preferably 1 mm to 3 mm.

[0471] 11 , the energy conversion device 112 may include a bracket 1121, a second vibration transmission sheet 1122, a magnetic circuit system, and a coil 1123. The bracket 1121 is connected to the core housing 111 via the first vibration transmission sheet 113. The second vibration transmission sheet 1122 connects the bracket 1121 and the magnetic circuit system so that the magnetic circuit system is suspended within the accommodating cavity 100. The coil 1123 is connected to the bracket 1121 and is inserted into the magnetic gap of the magnetic circuit system along the vibration direction of the energy conversion device 112. In this case, the diaphragm 114 may be connected to the bracket 1121 via a connecting member 115. Exemplarily, the first vibration transmission sheet 113 may have a peripheral region connected to the core housing 111 and a central region connected to the bracket 1121. The second vibration transmission sheet 1122 may have a peripheral region connected to the bracket 1121 and a central region connected to the magnetic circuit system. Of course, in some other embodiments, the second vibration transmission sheet 1122 may have a peripheral region connected to the magnetic circuit system and a central region connected to the bracket 1121. In this case, the magnetic circuit system may be connected to the peripheral region of the second vibration transmission sheet 1122 via a cylindrical connecting member. The magnetic circuit system may include a magnetic permeable cover 1124 and a magnet 1125 connected to the bottom of the magnetic permeable cover 1124. The number of magnets 1125 may be one or at least two as needed. The magnet 1125 may be connected to the central region of the second vibration transmission sheet 1122 and may be spaced apart from the magnetic permeable cover 1124 in a direction perpendicular to the vibration direction of the energy conversion device 112 to form the magnetic gap. The coil 1123 is inserted between the magnet 1125 and the magnetic permeable cover 1124. In addition, in some embodiments, such as when a ring-shaped magnet surrounding magnet 1125 is installed inside permeable cover 1124, the magnetic gap is specifically formed between the ring-shaped magnet and magnet 1125, but since the magnetic gap is still located between permeable cover 1124 and magnet 1125, it can still be considered that magnet 1125 and permeable cover 1124 are installed at a distance from each other in a direction perpendicular to the vibration direction of energy conversion device 112.

[0472] In some embodiments, as shown in Figures 27 and 28, the first vibration transmission sheet 113 may have a central region fitted into the bracket 1121 and a peripheral region pressed against the inner cylindrical wall 1112 by the first end wall 1113, the second vibration transmission sheet 1122 may have a central region fitted into the bracket 1121 and be farther from the diaphragm panel 114 than the first vibration transmission sheet 113 and be fixed to the tubular connecting member at its peripheral region, the side wall of the permeable cover 1124 of the magnetic circuit system may be connected to the above-mentioned tubular connecting member so that the magnetic circuit system is connected to the bracket 1121 via the second vibration transmission sheet 1122, and the coil 1123 is connected to the side of the bracket 1121 away from the first vibration transmission sheet 113 and the second vibration transmission sheet 1122 and is inserted into the magnetic gap between the permeable cover 1124 and the magnet 1125. In this case, the side wall of the magnetically permeable cover 1124 is connected to the second vibration transmission sheet 1122 via a tubular connecting member, so that a cavity is formed inside the energy conversion device 112. Assuming no other structural improvements are made, the cavity communicates with the accommodating cavity 100 only through the openwork area in the second vibration transmission sheet 1122, which causes the energy conversion device 112 to generate serious cavity noise during the vibration process and even greater sound leakage.

[0473] 46 and 11, a bracket 1121 may be connected to the core housing 111 via the first vibration transmission sheet 113, a second vibration transmission sheet 1122 may be connected to the first vibration transmission sheet 113 via the bracket 1121, a magnetic circuit system may be connected to a central region of the second vibration transmission sheet 1122 such that the magnetic circuit system is suspended within the accommodating cavity, and a coil 1123 may be inserted into the magnetic gap of the magnetic circuit system along the vibration direction of the energy conversion device 112. The aforementioned magnetic gap surrounds the position where the magnetic circuit system is connected to the second vibration transmission sheet 1122. In this way, because the magnetic circuit system is connected to the central region of the second vibration transmission sheet 1122, there is no need for a tubular connecting member connected to the peripheral region of the second vibration transmission sheet 1122 in the magnetic circuit system, i.e., the tubular connecting member is canceled, allowing a larger communication area between the inside and outside of the energy conversion device 112, which is advantageous for suppressing the cavity sound effect and further improving sound leakage from the earphone 10. For example, because the magnet 1125 of the magnetic circuit system is connected to the central region of the second vibration transmission sheet 1122, the side wall of the magnetically permeable cover 1124 is installed at a distance from the second vibration transmission sheet 1122 in the vibration direction of the energy conversion device 112, forming a passage connecting the aforementioned magnetic gap with the outside of the magnetic circuit system and further increasing the communication area between the inside and outside of the energy conversion device 112.

[0474] 47 and 46, the bracket 1121 may include a first bracket 11212 and a second bracket 11213, where the first bracket 11212 may be connected to a central region of the first vibration transmission sheet 113, and the second bracket 11213 may be connected to a peripheral region of the second vibration transmission sheet 1122. Accordingly, the second bracket 11213 and the diaphragm panel 114 may be connected to the first bracket 11212, respectively, and the coil 1123 may be connected to the second bracket 11213. In this case, the connection position between the coil 1123 and the second bracket 11213 corresponds to the peripheral region of the second vibration transmission sheet 1122, so that the magnetic gap can surround the central region where the magnetic circuit system is connected to the second vibration transmission sheet 1122. The first bracket 11212 and the first vibration transmission sheet 113 may be integrally molded by a metal insert injection molding process, and the second bracket 11213 and the second vibration transmission sheet 1122 may also be integrally molded by a metal insert injection molding process. Accordingly, one of the first bracket 11212 and the second bracket 11213 may be provided with an insertion hole, and the other may be provided with an insertion post fitted into the insertion hole, which is inserted into the insertion hole to connect the first bracket 11212 and the second bracket 11213. In this embodiment, an example will be described in which the first bracket 11212 and the second bracket 11213 are provided with an insertion hole 11215 and an insertion post 11216, respectively.

[0475] Further, the energy conversion device 112 may include a suspension 11214, the suspension 11214 being connected to a central region of the second vibration transmission sheet 1122, the second bracket 11213 being located on the outer periphery of the suspension 11214 and spaced apart from the suspension 11214 in a direction perpendicular to the vibration direction of the energy conversion device 112, and the magnet 1125 of the magnetic circuit system being connected to the suspension 11214. In this manner, the magnetic gap between the magnetically permeable cover 1124 and the magnet 1125 surrounds the central region where the magnet 1125 is connected to the second vibration transmission sheet 1122.

[0476] Furthermore, the magnet 1125 may be a permanent magnet and may include a first magnetic member 11251, a magnetic permeable member 11252, and a second magnetic member 11253 stacked along the vibration direction of the energy conversion device 112. The second magnetic member 11253 is closer to the second vibration transmission sheet 1122 than the first magnetic member 11251. For example, the first magnetic member 11251 is connected to the bottom of the magnetic permeable cover 1124. The magnetization directions of the first magnetic member 11251 and the second magnetic member 11253 are different, for example, opposite to each other. Furthermore, when projected orthogonally onto the outer peripheral surface of the magnet 1125 along a direction perpendicular to the vibration direction of the energy conversion device 112, the side wall of the magnetic permeable cover 1124 overlaps with at least the magnetic permeable member 11252. This allows the magnetic field generated by the magnet 1125 to be more concentrated within the magnetic gap, thereby reducing sound leakage. Preferably, when the coil 1123 is projected onto the outer peripheral surface of the magnet 1125 in a direction perpendicular to the vibration direction of the energy conversion device 112, it overlaps at least with the magnetically permeable member 11252, thereby allowing the magnetic field formed by the magnet 1125 to pass more through the coil 1123, thereby increasing the utilization rate of the magnetic field.

[0477] Furthermore, in the magnetic shielding cover 1124, a communication hole 11241 may be provided to connect the aforementioned magnetic gap and the external space of the magnetic circuit system, so as to increase the area where the inside and outside of the energy conversion device 112 communicate and further weaken the cavity sound effect. Naturally, a communication hole 11211 extending along the vibration direction of the energy conversion device 112 may be provided in the bracket 1121, and a through hole extending along a direction perpendicular to the vibration direction of the energy conversion device 112 may be provided in the cylindrical connecting member, thereby increasing the area where the inside and outside of the energy conversion device 112 communicate and further weakening the cavity sound effect. This is because in the process of the energy conversion device 112 generating mechanical vibrations, the air on both sides facing away from each other in the vibration direction is compressed or expanded, that is, positive and negative sound pressures are formed, and the aforementioned communication holes can communicate the air on both sides facing away from each other of the energy conversion device 112 and further cancel each other out in opposite phases.

[0478] In some embodiments, in the non-mounted state, the frequency response curve of the vibration of the vibration panel 114 has a resonance dip, a first resonance peak, and a second resonance peak within the frequency band range of 80 Hz to 2 kHz. The peak value frequencies of the resonance dip, the first resonance peak, and the second resonance peak are defined as f0, f1, and f2 in sequence, and satisfy the relational expression f0 < f1 < f2. 80 Hz ≤ f0 ≤ 400 Hz, 80 Hz ≤ f1 ≤ 400 Hz, and 100 Hz ≤ f2 ≤ 2 kHz.

[0479] In some embodiments, in the non-mounted state, the frequency response curve of the vibration of the vibration panel 114 has only one resonance peak within the frequency band range of 80 Hz to 2 kHz. The peak value frequency of the aforementioned resonance peak is 100 Hz to 2 kHz.

[0480] In some embodiments, in the non-worn state, the frequency response curve of the vibration of the vibration panel 114 has a first resonance peak and a second resonance peak within the frequency band range of 80 Hz to 2 kHz, and there is no resonance dip. The peak value frequency of the first resonance peak is 80 Hz to 400 Hz, and the peak value frequency of the second resonance peak is 100 Hz to 2 kHz.

[0481] In some embodiments, in the non-worn state, the frequency response curve of the vibration of the vibration panel 114 has a resonance dip, a first resonance peak and a second resonance peak within the frequency band range of 80 Hz to 200 Hz. The peak value frequencies of the resonance dip, the first resonance peak and the second resonance peak are defined as f0, f1 and f2 in sequence, and satisfy the relational expressions f0 < f2 and f1 < f2.

[0482] In some embodiments, the mass of the core housing 111 is 1.2 g or more, preferably 1.5 g or more, and / or the rigidity of the first vibration transmission sheet 113 is 2500 N / m or less. Further, the mass of the magnetic circuit system is 3 g or more, preferably 5 g or more, and / or the rigidity of the second vibration transmission sheet 1122 is 3000 N / m or more, preferably 5000 N / m or more.

[0483] In some embodiments, the mass of the core housing 111 is 0.5 g or less, preferably 0.3 g or less, and / or the rigidity of the first vibration transmission sheet 113 is 2000 N / m or more, preferably 5000 N / m or more.

[0484] In some embodiments, in the non-worn state, the frequency response curve of the vibration of the vibration panel 114 has a resonance peak, and the resonance peak has a strong correlation with the rigidity of the bracket 1121. The peak value frequency of the resonance peak is 4 kHz or more, preferably 5 kHz or more. The rigidity of the bracket 1121 is 10 5 N / m or more, preferably 5 × 10 5 N / m or more.

[0485] As shown in FIG. 12 , the earphone 10 may further include a head beam assembly 12 connected to the core module 11. The head beam assembly 12 may bypass the top of the user's head, with the entire core module 11 positioned in front of the user's ear. Naturally, the entire core module 11 may be positioned behind the user's ear or in another location, or a portion of the core module 11 may be positioned in front of or behind the user's ear. In some embodiments, for example, as shown in FIG. 34 , the core module 11 may contact the user's cheek via the core housing 111 (specifically, the first end wall 1113). That is, the side of the core housing 111 away from the adapter housing 13 forms a contact surface that contacts the user's skin. In other embodiments, for example, as shown in FIG. 1 , the core module 11 may contact the user's cheek via the vibration panel 114. In some other embodiments, for example, as shown in FIG. 3, the core module 11 may contact the user's cheek through the vibration panel 114 and the surrounding member 116, or, for example, as shown in FIG. 45, the core module 11 may contact the user's cheek through the porous structure 1167 in the vibration panel 114 and the surrounding member 116.

[0486] 12 , the core module 11 may be connected to other types of support assemblies, which support the core module 11 so that it is mounted in a wearing position and similarly allow the user to wear the earphones 10. For example, the support assembly may include a back-hanging structure and ear-hanging structures connected to both ends of the back-hanging structure, where the back-hanging structure bypasses the back of the user's head when worn, and the two ear-hanging structures are respectively hung on the user's left and right ears when worn. Furthermore, the wearing position may be a position close to the user's ears on the user's cheeks or in front of the user's ears away from the head.

[0487] Illustratively, in the worn state, the head beam assembly 12 may form a first contact point with the top of the user's head (for example, as shown at CP1 in Figures 13 to 17), and the core module 11 may form a second contact point with the user's cheek (for example, as shown at CP2 in Figures 13 to 17). The distance between the second contact point and the first contact point in the direction of the sagittal axis of the human body (for example, as shown at W in Figures 13 to 17) may be 20 mm to 30 mm, and preferably 22 mm to 28 mm. Furthermore, the distance between the second contact point and the first contact point in the direction of the sagittal axis of the human body is preferably 25 mm. When this distance is ensured, the core module 11 can be naturally worn in a position close to the ear of the user's cheek. The core module 11 vibrates at the above-mentioned wearing position to generate sound waves, which can be transmitted to the user's central nervous system via the shortest path, thereby achieving higher sound wave transmission efficiency and lower sound loss. When viewed from the direction of the coronal axis of the human body, the first contact point may be located directly above the user's ear, and the second contact point may be located directly in front of the user's ear. Furthermore, the head beam assembly 12 may include an arc-shaped head beam member 121 and an adapter member 122, where the arc-shaped head beam member 121 circumvents the top of the user's head, and both ends of the adapter member 122 are connected to the arc-shaped head beam member 121 and the core module 11, respectively. The arc-shaped head beam member 121 may be located above the user's ear and form the first contact point with the top of the user's head. For example, the material of the arc-shaped head beam member 121 may be plastic, and the material of the adapter member 122 may be metal. Of course, both may be plastic or metal. When the core module 11 is configured to be close to or far from the arc-shaped head beam member 121 in the extension direction of the head beam assembly 12, for example, one end of the adapter member 122 away from the core module 11 (specifically, which may be the first connection portion 1221 described later) can be extended and retracted relative to the arc-shaped head beam member 121, and the portion of the arc-shaped head beam member 121 that engages with the adapter member 122 may be configured as a metal member to partially reinforce the wear resistance of both.

[0488] 13 to 17 only show contact points formed on one side of the earphone 10 and the user's head, the earphone 10 is generally configured with a bilaterally symmetrical structure, and for example, by connecting each end of the head beam assembly 12 shown in FIG. 12 to one core module 11, each core module 11 forms a second contact point with the user's cheek, that is, the earphone 10 and the user's head can actually form one first contact point and two second contact points, which is abbreviated as "three-point wearing."

[0489] 48 and 16, in the worn state, when viewed from the direction in which the coronal axis of the human body is located, the center of the diaphragm panel 114 on the side facing the worn position (for example, as shown at CP2 in FIG. 48) is closer to the ear canal of the user's ear than the center of the core housing 111 on the side facing the worn position (for example, as shown at CP0 in FIG. 48) in the direction in which the sagittal axis of the human body is located. In other words, when the structures of the support assembly and the core module 11 are constant, the diaphragm panel 114 is configured to be offset with respect to the core housing 111, so that when the core module 11 vibrates at the worn position to generate sound waves, the sound waves can be transmitted to the user's central nervous system via the shortest path, resulting in higher sound wave transmission efficiency and less sound loss. In addition, because the diaphragm panel 114 is closer to the ear canal in the worn state, the core module 11 can transmit the mechanical vibrations generated by the energy conversion device 112 by bone conduction and cause more air in the ear canal to vibrate along with it (i.e., generate air-conducted sound), further increasing the volume of the sound heard by the user. Note that in an embodiment in which the core module 11 includes the enclosing member 116, the diaphragm panel 114 is offset relative to the enclosing member 116, i.e., the centers of the two panels facing the worn position do not overlap.

[0490] In some embodiments, the center of the diaphragm panel 114 projected orthogonally onto the core housing 111 along the vibration direction of the energy conversion device 112 overlaps with the center of the energy conversion device 112 projected orthogonally onto the core housing 111 along the aforementioned vibration direction, i.e., the diaphragm panel 114 is not offset relative to the energy conversion device 112; for example, the position where the bracket 1121 is connected to the diaphragm panel 114 is at the center of the diaphragm panel 114, and the center of the energy conversion device 112 projected orthogonally onto the core housing 111 along the aforementioned vibration direction does not overlap with the center of the side of the core housing 111 facing the energy conversion device 112 in the aforementioned vibration direction, i.e., the energy conversion device 112 as a whole is offset relative to the core housing 111.

[0491] In some other embodiments, the center of the energy conversion device 112 projected orthogonally onto the core housing 111 along its vibration direction coincides with the center of the side of the core housing 111 facing the energy conversion device 112 in the vibration direction, i.e., the energy conversion device 112 as a whole is not offset relative to the core housing 111. The center of the diaphragm panel 114 projected orthogonally onto the core housing 111 along the vibration direction does not coincide with the center of the energy conversion device 112 projected orthogonally onto the core housing 111 along the vibration direction, i.e., the diaphragm panel 114 is offset relative to the energy conversion device 112, for example, the position where the bracket 1121 is connected to the diaphragm panel 114 is not at the center of the diaphragm panel 114, and therefore the diaphragm panel 114 is offset relative to the core housing 111.

[0492] Furthermore, the earphone 10 may include an adapter housing 13 that connects the core housing 111 and the support assembly (e.g., the head beam assembly 12). As shown in FIGS. 20, 27, and 28, the adapter housing 13 may include a cylindrical sidewall 134 located on the outer periphery of the core housing 111, and the cylindrical sidewall 134 may be connected to the head beam assembly 12. Based on this, orthogonal projections of the core housing 111 and the cylindrical sidewall 134 onto a reference plane perpendicular to the vibration direction of the energy conversion device 112 have a first center and a second center, respectively. In a worn state, the first center may be closer to the ear canal of the user's ear than the second center. In other words, as shown in Figures 46 and 28, when the structure of the support assembly and core module 11 is constant, the core housing 111 is configured to be offset relative to the adapter housing 13, so that when the core module 11 vibrates in the aforementioned mounting position to generate sound waves, the sound waves can be transmitted to the user's central nervous system via the shortest path, thereby achieving higher sound wave transmission efficiency and less sound loss.

[0493] 48 and 46, the core housing 111 may be configured to rotate about a first axis (e.g., as shown at A1 in FIG. 48) relative to the adapter housing 13 so that the core module 11 can be more closely fitted to the mounting position. The first center and the second center are spaced apart along the direction of the first axis. In other words, when one side of the core housing 111 is closer to the cylindrical sidewall 134 in the direction of the first axis, the other side of the core housing 111 may be farther from the cylindrical sidewall 134; that is, the gap between the core housing 111 and the cylindrical sidewall 134 may not be equal in the direction of the first axis. Furthermore, the first center and the second center may be located on the first axis; that is, the core module 11 is translated by a certain distance along the first axis.

[0494] In some embodiments, as shown in FIGS. 13 to 16 , when viewed from the direction of the coronal axis of the human body in the worn state, at least a portion of the head beam assembly 12 is inclined with respect to the vertical axis of the human body, for example, extending at an inclination toward directly in front of the user, so as to form a first contact point and a second contact point. In this case, the adapter member 122 may be configured as a rod or a sheet. For example, as shown in FIG. 13 , when viewed from the direction of the coronal axis of the human body, the arc-shaped head beam member 121 is inclined with respect to the vertical axis of the human body, and the adapter member 122 is parallel to the vertical axis of the human body. In this case, the adapter member 122 may be connected to the side of the core module 11 facing the crown of the user's head. Also, for example, as shown in FIG. 14 , when viewed from the direction of the coronal axis of the human body, the arc-shaped head beam member 121 is inclined with respect to the vertical axis of the human body, and the adapter member 122 is also inclined with respect to the vertical axis of the human body, and the inclination angles of both with respect to the vertical axis of the human body are the same. In this case, the adapter member 122 may be connected to the side of the core module 11 away from the user's cheek. Also, for example, as shown in FIG. 15 , when viewed from the direction in which the coronal axis of the human body is located, the arc-shaped head beam member 121 is inclined with respect to the vertical axis of the human body, and a portion of the adapter member 122 is inclined with respect to the vertical axis of the human body and another portion is parallel to the vertical axis of the human body. In this case, the adapter member 122 may be connected to the side of the core module 11 away from the user's ears. Also, for example, as shown in FIG. 16 , when viewed from the direction in which the coronal axis of the human body is located, the arc-shaped head beam member 121 is parallel to the vertical axis of the human body, and a portion of the adapter member 122 is inclined with respect to the vertical axis of the human body and another portion is parallel to the vertical axis of the human body. In this case, the adapter member 122 may be connected to the side of the core module 11 facing the top of the user's head.

[0495] 17, the adapter member 122 may be annular. In this case, when worn, the arc-shaped head beam member 121 is parallel to the vertical axis of the human body when viewed from the direction of the coronary axis of the human body, and the adapter member 122 may be fitted around the outer circumference of the user's ear, similarly forming the first and second contact points. The adapter member 122 may be a continuous, sealed annular member or a discontinuous annular member (e.g., C-shaped or U-shaped).

[0496] In fields such as medicine and anatomy, three basic cutting planes of the human body—the sagittal plane, the coronal plane, and the horizontal plane—and three basic axes—the sagittal axis, the coronal axis, and the vertical axis—can be defined. The sagittal plane is a cutting plane perpendicular to the ground along the front-to-back direction of the body, dividing the body into two parts, left and right. The coronal plane is a cutting plane perpendicular to the ground along the left-to-right direction of the body, dividing the body into two parts, left and right. The horizontal plane is a cutting plane parallel to the ground along the up-down direction of the body, dividing the body into two parts, top and bottom. Accordingly, the sagittal axis is an axis that passes vertically through the coronal plane along the front-to-back direction of the body. The coronal axis is an axis that passes vertically through the sagittal plane along the left-to-right direction of the body. The vertical axis is an axis that passes vertically through the horizontal plane along the up-to-down direction of the body.

[0497] 12, 16, and 20, the adapter member 122 may include a first connecting portion 1221, an intermediate transition portion 1222, and a second connecting portion 1223, where the intermediate transition portion 1222 connects the first connecting portion 1221 and the second connecting portion 1223. The first connecting portion 1221 and the second connecting portion 1223 are bent relative to the intermediate transition portion 1222 and extend in opposite directions. In this case, the first connecting portion 1221 may be connected to the arc-shaped head beam member 121, and the second connecting portion 1223 may be connected to the core module 11. When viewed from a direction in which the coronal axis of the body is located, the intermediate transition portion 1222 is inclined with respect to the vertical axis of the body to form a first contact point and a second contact point.

[0498] Furthermore, the bending angle of the first connecting portion 1221 relative to the intermediate transition portion 1222 (e.g., as shown by θ1 in FIG. 16 ) may be greater than or equal to 90° and less than 180°, and / or the bending angle of the second connecting portion 1223 relative to the intermediate transition portion 1222 (e.g., as shown by θ2 in FIG. 16 ) may be greater than or equal to 90° and less than 180°. In this manner, the adapter member 122 provides a smoother transitional connection between the arcuate head beam member 121 and the core module 11. In the worn state, the first connecting portion 1221 may be parallel to the second connecting portion 1223 when viewed from the direction of the coronal axis of the human body. In this case, the distance between the first connecting portion 1221 and the second connecting portion 1223 (e.g., as shown by W in FIG. 16 ) may be 20 mm to 30 mm, preferably 22 mm to 28 mm.

[0499] 19, the adapter member 122 may have a curvature angle at other viewing angles (for example, when viewed from the direction of the sagittal axis of the human body), for example, the adapter members 122 at both ends of the arc-shaped head beam member 121 may extend closer to each other in the same direction so that the earphone 10 can better contact the user's head and the head beam assembly 12 provides a pressing force to the core module 11.

[0500] Furthermore, as shown in FIG. 20 , the first connecting portion 1221 and the second connecting portion 1223 may each have a wiring cavity. For example, they may each be hollow tubular. The intermediate transition portion 1222 may have a slot 1224 formed therein. The slot 1224 connects the wiring cavities of the first connecting portion 1221 and the second connecting portion 1223, allowing the wiring of the earphone 10 to extend from the core module 11 to the arc-shaped head beam member 121 via the adapter member 122. The wiring of the earphone 10 may be a conductor wire, a flexible substrate, or the like. Accordingly, the head beam assembly 12 may further include a sealing member fitted in the slot 1224. The sealing member covers the wiring, thereby improving the waterproof and dustproof properties of the earphone 10 and advantageously improving the appearance of the earphone 10. The sealing member may be a hardened colloid or a cover plate. Of course, in some other embodiments, the wiring of the earphone 10 may be exposed from the adapter member 122, and accordingly, the adapter member 122 may be configured as a solid structure.

[0501] The inventors of the present application have discovered the following through extensive research. When the head beam assembly 12 applies a pressing force of 0.4 N to 0.8 N to press the core module 11 against the user's cheek, i.e., in the worn state, the pressing force of the core module 11 against the user's cheek is 0.4 N to 0.8 N, preferably 0.5 N to 0.6 N, and the user can enjoy excellent wearing stability, comfort, and good sound quality. The pressing force can be measured using a clamp tester (FL-86161A, Hokubun Instruments). Specifically, during measurement, the earphone 10 is clamped between the parallel plates of the clamp tester and supported by the intermediate fork of the clamp tester. The parallel plates of the clamp tester then separate the two core modules 11 from each other, with a test gap (e.g., 145 mm, the average width of a human head) to simulate a user wearing the earphone 10. In this case, the corresponding pressing force can be measured by reading the value displayed on the clamp tester. Different users have different head sizes (e.g., "large head" and "small head"). Therefore, the head beam assembly 12 may be configured with an adjustable arc length to meet the wearing needs of different users for the earphones 10. Furthermore, the present application desires that different users will obtain consistent pressure when wearing the earphones 10.

[0502] Illustratively, the first connecting portion 1221 can be retracted or retracted relative to the arcuate head beam member 121 by an external force, thereby allowing the core module 11 to move closer to or farther away from the arcuate head beam member 121 in the extension direction of the head beam assembly 12, and further adjusting the arc length of the head beam assembly 12. It should be understood that the second connecting portion 1223 can be retracted or retracted relative to the core module 11 by an external force, and similarly, the arc length of the head beam assembly 12 can be adjusted.

[0503] 12, an adapter member 122 and a core module 11 may be installed on both ends of the arc-shaped head beam member 121. The head beam assembly 12 applies a first pressing force to the core module 11 in a first use state, and applies a second pressing force to the core module 11 in a second use state, with the absolute value of the difference between the second pressing force and the first pressing force being 0 to 0.1 N, preferably 0 to 0.05 N. In this way, when different users wear the earphones 10, i.e., when the head beam assemblies 12 have different arc lengths and the two core modules 11 are spaced apart from each other, the head beam assembly 12 prevents a large difference in the pressing force applied by the core modules 11 to the users' cheeks, further improving the adaptability of the earphones 10 to different users.

[0504] The first usage state may be defined as a usage state in which each adapter member 122 has a first extension amount relative to the arcuate head beam member 121 and there is a first distance between the two core modules 11, and the second usage state may be defined as a usage state in which each adapter member 122 has a second extension amount relative to the arcuate head beam member 121 and there is a second distance between the two core modules 11. The second extension amount is greater than the first extension amount, and the second distance is greater than the first distance. In short, the first usage state may be a state in which the earphones 10 are likely to be worn by users with small heads, and the second usage state may be a state in which the earphones 10 are likely to be worn by users with large heads. Therefore, when the core module 11 is closest to the arcuate head beam member 121, the first extension amount can be the smallest value, and when the core module 11 is farthest from the arcuate head beam member 121, the second extension amount can be the largest value.

[0505] The inventors of the present application have found through long-term research that, under the same conditions, parameters such as the rigidity and curvature of the arc-shaped head beam member 121 and the adapter member 122 have a certain effect on the pressing force that the head beam assembly 12 can provide, and currently a qualitative analysis is being conducted on this.

[0506] As shown in Figure 18, a cantilever beam bends and deforms due to loads such as concentrated forces and distributed ...

Claims

1. a support assembly and a core module connected to the support assembly, the support assembly supporting the core module to be mounted in a mounting position, the core module including a core housing, an energy conversion device, and a vibration panel, the energy conversion device being installed in an accommodating cavity of the core housing, the vibration panel being connected to the energy conversion device and transmitting mechanical vibrations generated by the energy conversion device to a user; the support assembly is configured as a head beam assembly, the head beam assembly bypassing the top of the user's head and bringing the core module into contact with the user's cheek, and allowing the core module to transmit mechanical vibrations generated in the core module by bone conduction; in a worn state, the head beam assembly forms a first contact point with the top of the user's head, the core module forms a second contact point with the user's cheek, and the head beam assembly further forms a third contact point with the user's head, the third contact point being located between the first contact point and the second contact point in a direction along which a vertical axis of the human body is located; the head beam assembly includes an inner chamber forming body, an inner cover, and an outer cover, the inner chamber forming body is elastic and configured to contact a user's head, the inner cover and the inner chamber forming body are connected to the same side of the outer cover, an end of the inner chamber forming body extends between the inner cover and the outer cover, and in a process in which both ends of the head beam assembly are gradually pulled away from each other, at least a portion of the inner chamber forming body can be pulled out from between the inner cover and the outer cover.

2. the head beam assembly includes an arc-shaped head beam member and two auxiliary members connected to the arc-shaped head beam member, the arc-shaped head beam member circumventing the top of the user's head, the core module being connected to the arc-shaped head beam member, and in a worn state, the two auxiliary members respectively form the third contact points with both sides of the user's head; 2. The earphone according to claim 1, wherein, in a worn state, the head beam assembly forms a total of five contact points, namely one first contact point, two second contact points, and two third contact points on both the left and right sides, the pressing force at each of the second contact points is 0.2 N to 2 N, the pressing force at each of the third contact points is 0.3 N to 2 N, and when the user's head is tilted forward, the sum of the resistance moments due to frictional forces at the five contact points exceeds the gravitational moment of the earphone.

3. 3. The earphone according to claim 2, wherein the auxiliary member has elasticity, and when the earphone is worn by users with heads of different sizes, the auxiliary member undergoes different degrees of elastic deformation, so that the change in pressing force at the second contact point is 0.2 N or less.

4. the head beam assembly further includes an adapter member connecting the arcuate head beam member and the core module, the adapter member allowing the core module to move closer to or farther from the arcuate head beam member in the extension direction of the head beam assembly, the arcuate head beam member providing a first pressing force to the core module in a first use state and a second pressing force to the core module in a second use state, the auxiliary member being configured such that an absolute value of a difference between the second pressing force and the first pressing force is 0 to 0.1 N; 4. The earphone according to claim 3, wherein the first usage state is defined as a usage state in which each adapter member has a first extension amount relative to the arcuate head beam member and a first spacing between the core modules at both ends of the head beam assembly, and the second usage state is defined as a usage state in which each adapter member has a second extension amount relative to the arcuate head beam member and a second spacing between the core modules at both ends of the head beam assembly, the second extension amount being greater than the first extension amount and the second spacing being greater than the first spacing.

5. 3. The earphone of claim 2, wherein in a natural state, the head beam assembly has a first reference plane and a second reference plane that are perpendicular to each other, the two auxiliary members are installed symmetrically with respect to the first reference plane, the second reference plane passes through the highest point and two end points of the arc-shaped head beam member, and the arc-shaped head beam member and the auxiliary member are projected onto the second reference plane, and within the second reference plane, a line connecting the fixed end and the free end of the auxiliary member has a first projected component in a first reference direction that is parallel to the line connecting the two end points and a second projected component in a second reference direction that is perpendicular to the line connecting the two end points, and a ratio of the second projected component to the first projected component is between 1 and 5, and / or the equivalent elastic modulus of the auxiliary member is between 100 N / m and 180 N / m.

6. The earphone described in claim 5, characterized in that each auxiliary member is fixed to one end of the arc-shaped head beam member, and a line connecting one of the end points of the arc-shaped head beam member to the highest point has a third projected component in a first reference direction parallel to the line connecting the two end points and a fourth projected component in a second reference direction perpendicular to the line connecting the two end points, and the ratio of the second projected component to the fourth projected component is 0.1 to 0.

5.

7. 3. The earphone of claim 2, wherein each auxiliary member is cantilevered relative to the arc-shaped head beam member, and when the head is lowered, a pressing force at the first contact point forms a first resistance moment with respect to the second contact point, a pressing force at the third contact point forms a second resistance moment with respect to the second contact point, the pressing force at the second contact point forms a third resistance moment with respect to a contact surface of the core module that contacts the user's cheek if the head beam assembly includes the auxiliary member, and the pressing force at the second contact point forms a fourth resistance moment with respect to the contact surface of the core module that contacts the user's cheek if the head beam assembly does not include the auxiliary member, and a resultant moment formed by the first resistance moment, the second resistance moment, and the third resistance moment is greater than a resultant moment formed by the first resistance moment and the fourth resistance moment.

8. 8. The earphone according to claim 7, characterized in that, in a natural state, the head beam assembly has a first reference plane and a second reference plane that are perpendicular to each other, the two auxiliary members are installed symmetrically with respect to the first reference plane, the second reference plane passes through the highest point and two end points of the arc-shaped head beam member, and the arc-shaped head beam member and the auxiliary member are projected onto the second reference plane, and within the second reference plane, a projected component of the distance from the fixed end of the auxiliary member connected to the arc-shaped head beam member to the core module adjacent to the auxiliary member, in a second reference direction perpendicular to a line connecting the two end points, is 40 mm to 120 mm.

9. 3. The earphone of claim 2, wherein each auxiliary member is cantilevered relative to the arc-shaped head beam member, and the auxiliary member extends toward a middle region of the arc-shaped head beam member; in a natural state, the head beam assembly has first and second reference planes that are perpendicular to each other; the two auxiliary members are symmetrically disposed relative to the first reference plane; the second reference plane passes through the highest point and two end points of the arc-shaped head beam member, and the arc-shaped head beam member and the auxiliary members are projected onto the second reference plane; within the second reference plane, a fixed end of the auxiliary member connected to the arc-shaped head beam member has a first distance from the highest point in a reference direction perpendicular to a line connecting the two end points; and a position of the core module connected to the head beam assembly has a second distance from the highest point in the reference direction, and a ratio of the first distance to the second distance is 1 / 3 to 1 / 2.

10. 3. The earphone of claim 2, wherein each auxiliary member is cantilevered relative to the arc-shaped head beam member, and the auxiliary member extends toward an end of the arc-shaped head beam member; in a natural state, the head beam assembly has a first reference plane and a second reference plane that are perpendicular to each other; the two auxiliary members are arranged symmetrically relative to the first reference plane; the second reference plane passes through the highest point and two end points of the arc-shaped head beam member, and the arc-shaped head beam member and the auxiliary members are projected onto the second reference plane; within the second reference plane, a fixed end of the auxiliary member connected to the arc-shaped head beam member has a third distance from the highest point in a reference direction perpendicular to a line connecting the two end points; and a position of the core module connected to the head beam assembly has a fourth distance from the highest point in the reference direction, and a ratio of the third distance to the fourth distance is 1 / 5 to 1 / 3.

11. 3. The earphone according to claim 2, wherein each auxiliary member is cantilevered relative to the arcuate head beam member, and the auxiliary member includes a fixed portion, a first extension portion connected to the fixed portion, and a second extension portion connected to the first extension portion, the fixed portion being connected to the arcuate head beam member, the first extension portion and the second extension portion being located on a side of the arcuate head beam member facing the user's head in a worn state and being spaced apart from the arcuate head beam member in a natural state, the width of the second extension portion being greater than the width of the first extension portion, and the second extension portion forming the third contact point with the user's head in a worn state.

12. The second extension portion is The area of ​​the second extension portion that comes into contact with the user's head is 2 cm ２ ~8cm ２ or 12. The earphone according to claim 11, wherein at least one of the following conditions is satisfied: a coefficient of friction of the second extension portion is greater than a coefficient of friction of the first extension portion.

13. In a worn state, when viewed from a direction in which a vertical axis of the human body is located, the second extension portions of the two auxiliary members are close to each other toward a rear side of the user's head, The earphone according to claim 11, characterized in that, in a natural state, the head beam assembly has a first reference plane and a second reference plane that are perpendicular to each other, the two auxiliary members are installed symmetrically with respect to the first reference plane, the second reference plane passes through the highest point and two end points of the arc-shaped head beam member, and the included angle between the average normal of the second extension portion of each auxiliary member and the second reference plane is 5 degrees to 10 degrees.

14. The earphone described in claim 1, characterized in that one or more through holes are provided at one end of the inner chamber forming body, and one or more posts extending into the one or more through holes are provided on the side of the inner cover facing the outer cover, the radial dimensions of the one or more posts being smaller than the radial dimensions of each of the one or more through holes, so that in the process of gradually pulling both ends of the head beam assembly away from each other, at least a portion of the inner chamber forming body is pulled out from between the inner cover and the outer cover and is held in place by the one or more posts.

15. The earphone described in claim 14, characterized in that the one or more through holes include two through holes, the one or more posts include two posts, the two through holes are spaced apart in a direction perpendicular to the extension direction of the head beam assembly, and each of the two posts extends into one of the two through holes.

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