WO2025124402A1 - 一种耳机 - Google Patents

一种耳机 Download PDF

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Publication number
WO2025124402A1
WO2025124402A1 PCT/CN2024/138269 CN2024138269W WO2025124402A1 WO 2025124402 A1 WO2025124402 A1 WO 2025124402A1 CN 2024138269 W CN2024138269 W CN 2024138269W WO 2025124402 A1 WO2025124402 A1 WO 2025124402A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
hole
earphone
reference point
pressure relief
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/138269
Other languages
English (en)
French (fr)
Inventor
张磊
崔超杰
钟雷
徐江
袁伟杰
王磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Shokz Co Ltd
Original Assignee
Shenzhen Shokz Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PCT/CN2024/076495 external-priority patent/WO2025123484A1/zh
Application filed by Shenzhen Shokz Co Ltd filed Critical Shenzhen Shokz Co Ltd
Publication of WO2025124402A1 publication Critical patent/WO2025124402A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/105—Earpiece supports, e.g. ear hooks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups

Definitions

  • the present application relates to the technical field of electronic equipment, and in particular to a headset.
  • Headphones have been widely used in people's daily life. They can be used with mobile phones, computers and other electronic devices to provide users with sound playback functions.
  • ear clip headphones are a new type of headphones. They are usually small in size and can be clamped on the wearer's ear helix for use. Moreover, the ear clip headphones do not block the ear canal, which not only ensures the safety of outdoor scenes, but also is more comfortable to wear than in-ear headphones.
  • the present application provides an earphone, which includes a sound-emitting part, an abutment part and an ear hook, wherein the ear hook connects the sound-emitting part and the abutment part, the sound-emitting part is used to convert an electrical signal into an acoustic signal and play it, a battery is arranged in the abutment part, and in a worn state, the sound-emitting part and the abutment part form a clamping state on both sides of the user's auricle, and the sound-emitting part is located in the concha cavity, the sound-emitting part includes a first shell and a sound-emitting component, which is used to form a first accommodating cavity, the sound-emitting component is arranged in the first accommodating cavity, a sound outlet hole is arranged on the first shell, and the sound generated by the sound-emitting component is output through the sound outlet hole, the sound outlet hole is arranged in a strip shape, and has a first end and
  • the outer wall surface of the first shell and the inner wall surface of the concha cavity are in contact with each other.
  • the outer wall of the first shell is arranged so that the long side hole of the sound outlet is arranged in an arc shape, and the distance between the outer wall of the first shell and the inner wall of the concha cavity gradually increases in the direction from the second end to the first end.
  • the arc-to-chord ratio of the long side hole edge of the sound outlet hole is between 1.05 and 1.4, or greater than or equal to 1.02 and less than 1.05.
  • the width-to-length ratio of the sound outlet hole is between 0.15 and 0.30.
  • the length of the sound outlet hole is between 9 and 16.5 mm, or greater than or equal to 5 mm and less than 9 mm.
  • the long side hole of the sound outlet hole forms a first reference point with the horizontal reference plane between the first end and the second end, the second end is located on the side of the first reference point toward the abutting portion, and the first end is located on the side of the first reference point away from the abutting portion.
  • the length of the long side hole of the sound outlet hole between the first end and the first reference point is between 2 and 5.5 mm, and the length of the long side hole of the sound outlet hole between the second end and the first reference point is between 4.5 and 8 mm.
  • the arc-chord ratio of the long side hole of the sound outlet hole between the first end and the first reference point is between 1.02 and 1.05, or greater than or equal to 1.001 and less than 1.02; the arc-chord ratio of the long side hole of the sound outlet hole between the second end and the first reference point is between 1.02 and 1.05, or greater than 1.05 and less than or equal to 1.07.
  • the long side hole edge of the sound outlet hole has a first normal direction at the first reference point
  • the long side hole edge of the sound outlet hole has a second normal direction at the first end
  • the long side hole edge of the sound outlet hole has a third normal direction at the second end
  • the angle between the first normal direction and the second normal direction is between 30° and 42°, or greater than or equal to 15° and less than 30°
  • the angle between the first normal direction and the third normal direction is between 50° and 60°, or greater than or equal to 25° and less than 50°.
  • the sound hole has a median line set along its length direction, the sound hole intersects with a reference section set along the length direction of the ear hook, and the angle between the plane where the median line is located and the reference section is between 0 and 45 degrees, and the sound hole is biased toward the earlobe.
  • the plane where the midline is located coincides with the reference cross section; or, the sound outlet hole is mirror-symmetrical with respect to the reference cross section.
  • the sound-emitting portion has a second reference point closest to the abutting portion
  • the inner contour of the ear hook in the worn state has a third reference point farthest from the second reference point in an area close to the edge of the auricle
  • the sound hole is located on a side of the second reference point farthest from the third reference point
  • the distance from the second end to the second reference point is between 2.2 and 4.2 mm
  • the distance from the first end to the second reference point is between 9 and 12.4 mm.
  • the sound-emitting portion is further provided with a pressure relief hole, which is arranged toward the auricle and intersects with the reference section or is mirror-symmetrical with respect to the reference section.
  • the pressure relief hole and the sound outlet hole are separated from each other by a contact area between the sound-emitting part and the concha cavity.
  • the number of the pressure relief hole is one and they are arranged in a strip shape, and the reference cross section is arranged along the width direction of the pressure relief hole and intersects with the pressure relief hole.
  • the number of the pressure relief holes is two, which are respectively arranged on both sides of the reference cross-section and are mirror-symmetrical with respect to the reference cross-section.
  • the reference cross-section is arranged along the width direction of the pressure relief holes.
  • the pressure relief hole includes a first hole portion and a second hole portion along the length direction of the pressure relief hole, and a third hole portion connected between the first hole portion and the second hole portion, wherein the width of at least part of the first hole portion and the second hole portion is greater than the width of the third hole portion.
  • the sound-emitting component is provided with a sound-introducing hole connected to the pressure relief hole through the first accommodating space, and the distance between the sound-introducing hole and the pressure relief hole is no greater than 0.5 mm, or is greater than 0.5 mm and less than or equal to 4 mm.
  • the earphone further includes a microphone
  • the first shell is provided with a sound inlet hole for directing external sound to the microphone, and the sound inlet hole is arranged to intersect with the reference cross section.
  • the sound-emitting component includes two speakers, each speaker includes a diaphragm, and the two speakers are assembled and matched with each other along the axial direction to form a first acoustic cavity between the two speakers.
  • the sound-emitting component is provided with a first sound-introducing hole connecting the sound outlet hole and the first acoustic cavity, the sound outlet hole and the first sound-introducing hole are connected to each other along the radial direction of the sound-emitting component, the first sound-introducing hole is further arranged in a strip shape, and the length direction of the sound outlet hole and the first sound-introducing hole is arranged along the circumference of the sound-emitting component.
  • FIG1 is a schematic diagram of a wearing state of an earphone embodiment of the present application when worn on a human ear;
  • FIG2 is a schematic front view of the structure of the earphone shown in FIG1 ;
  • FIG3 is a schematic diagram of the three-dimensional structure of the earphone shown in FIG1 ;
  • FIG4 is a schematic top view of the structure of the earphone shown in FIG1 ;
  • FIG5 is a schematic diagram of the three-dimensional structure of the sound-emitting portion of the earphone shown in FIG1 ;
  • FIG6 is a schematic front view of the structure of the sound-generating part shown in FIG5 ;
  • FIG7 is a schematic diagram of a cross-sectional structure of the sound-generating portion shown in FIG6 along the cutting line A-A;
  • FIG8 is another schematic cross-sectional structure diagram of the sound-generating portion shown in FIG6 along the cutting line A-A;
  • FIG9 is a schematic top view of the structure of the sound-generating part shown in FIG5 ;
  • FIG12 is an exploded schematic diagram of the sound generating assembly shown in FIG8 ;
  • FIG13 is a schematic diagram of the three-dimensional structure of another exemplary sound-generating component of the sound-generating part shown in FIG8 ;
  • FIG14 is an enlarged schematic diagram of a local area Q of the sound generating assembly shown in FIG11;
  • FIG15 is a schematic side view of the structure of the sound-generating portion shown in FIG5 ;
  • FIG16 is a schematic diagram of the cross-sectional structure of the sound-generating portion shown in FIG15 along the cutting line J-J;
  • FIG17 is a schematic top view of the structure of the sound generating assembly of the sound generating part shown in FIG16;
  • FIG18 is another side view of the structure of the sound generating assembly of the sound generating portion shown in FIG8 ;
  • FIG19 is a schematic diagram of an exploded structure of the sound-generating part shown in FIG5 ;
  • FIG20 is another exploded structural diagram of the sound-generating part shown in FIG5 ;
  • FIG21 is a schematic diagram of the cross-sectional structure of the sound-generating portion shown in FIG15 along the cutting line U-U;
  • FIG22 is another schematic diagram of the structure of the pressure relief hole of the sound-generating part shown in FIG15;
  • FIG23 is another schematic diagram of the exploded structure of the sound-generating part shown in FIG5 ;
  • FIG24 is a schematic diagram of the cross-sectional structure of the earphone shown in FIG4 along the section line V-V;
  • FIG25 is a schematic diagram of a cross section corresponding to the section line V-V shown in FIG24;
  • FIG26 is a schematic diagram of the three-dimensional structure of the earphone shown in FIG1 in a pre-tightened state
  • FIG27 is a schematic diagram of changes in the clamping force of the earphone shown in FIG26;
  • FIG28 is a schematic diagram of the structure of the earphone shown in FIG26 for measuring the preload force through a thin film pressure sensor
  • FIG29 is a schematic structural diagram of a device for measuring the clamping force/pre-tightening force of the earphone shown in FIG26 ;
  • FIG30 is a schematic structural diagram of another device for measuring the clamping force/pre-tightening force of the earphone shown in FIG26;
  • FIG31 is a schematic structural diagram of the earphone shown in FIG1 having a magnetic coupling matching structure
  • FIG32 is a schematic diagram of a clamping force variation of the earphone shown in FIG31 ;
  • FIG33 is a schematic diagram of the clamping force variation of the earphone in FIG31 under the pre-tightening state
  • FIG34 is a schematic diagram of the cross-sectional structure of the earphone shown in FIG2 along the cutting line I-I;
  • FIG35 is another schematic diagram of the cross section corresponding to the section line V-V shown in FIG24;
  • connection and “coupling” mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).
  • the user's ear EAR may include physiological parts such as the external auditory canal E11, the cavum concha E12, the cymba concha E13, the triangular fossa E14, the antihelix E15, the scaphoid E16, the helix E17, and the antitragus E18.
  • the external auditory canal 101 has a certain depth and extends to the eardrum of the ear EAR, for the sake of convenience of description, and in combination with FIG1 , in this application, unless otherwise specified, the external auditory canal E01 specifically refers to its entrance away from the eardrum (i.e., the ear hole).
  • physiological parts such as the cavum concha E12, the cymba concha E13, and the triangular fossa E14 have a certain volume and depth; and the cavum concha E12 is directly connected to the external auditory canal E11, that is, it can be simply regarded as the aforementioned ear hole being located at the bottom of the cavum concha E12.
  • tragus E19 outside the external auditory canal of the ear EAR, which has a certain depth and volume in three-dimensional space compared to the cavum concha E12, cymba concha E13 and fossa triangularis E14, that is, these parts are respectively concave toward the back side of the ear EAR in the direction close to the user's head, and the tragus E19 is convex toward the front side of the ear EAR in the direction away from the user's head.
  • the front side of the ear EAR is a concept relative to "the back side of the ear EAR", the former refers to the side of the ear EAR away from the head, such as Figure 1, and the latter refers to the side of the ear EAR facing the head, and they are both for the user's ear EAR.
  • a simulator containing a head and its (left and right) ear EARs can be made based on ANSI: S3.36, S3.25 and IEC: 603187 standards, such as GRAS45BCKEMAR. Therefore, descriptions such as “the user wears the earphones", “the earphones are in a wearing state” and "in a wearing state” may refer to the ear EAR of the earphones described in this application worn on the aforementioned simulator.
  • the earphones may be worn by different users and there may be certain differences in the ear EAR of the earphones worn on the aforementioned simulator, but such differences should be tolerated.
  • FIG. 1 shows a state where the earphone 1 is worn on the ear EAR of the user.
  • the earphone 1 may be an ear clip-on earphone.
  • the earphone 1 includes a sound-emitting portion 100 for inserting into the concha cavity E12 of the user (user), an abutment portion 400 for abutting the back of the ear of the user, and an ear hook 300 connected to the sound-emitting portion 100 and the abutment portion 400.
  • the ear hook 200 can bypass the user's auricle 17, and the sound-emitting portion 100 and the abutment portion 400 form a clamping state on both sides of the user's auricle.
  • the sound-emitting portion 100 is a sound playing device, which is used to convert an electrical signal into an acoustic signal and play it to the wearer.
  • the abutment portion 400 forms a clamping state with the sound-emitting portion 100 so that the entire earphone 1 is clamped and worn on the user's auricle.
  • the abutment portion 400 may be provided with devices such as a battery and a circuit board.
  • the contact portion 400 may be used without a battery, and the battery may be installed in the sound-generating portion 100 .
  • the sound-emitting portion 100 may be provided with a sound-emitting hole 111 and a pressure relief hole 112.
  • the sound-emitting hole 111 may be located at the bottom of the sound-emitting portion 100, and the pressure relief hole 112 may be located at a side of the sound-emitting portion 100 close to the ear hook 300.
  • the sound-emitting portion 100 includes a first housing 10 and a sound-emitting component 20.
  • the first housing 10 is used to form a first accommodating cavity 110, and the sound-emitting component 20 is disposed in the first accommodating cavity 110.
  • the sound-emitting assembly 20 includes two speakers 21.
  • Each speaker 21 includes a diaphragm 22.
  • the two speakers 21 are assembled and matched with each other along the axial direction (i.e., the direction of the axis Z) to form a first acoustic cavity 201 between the two speakers 21.
  • the sound-emitting assembly 20 and the first shell 10 cooperate with each other to form a second acoustic cavity 202 isolated from the first acoustic cavity 201 between the sound-emitting assembly 20 and the first shell 10.
  • the first shell 10 is provided with a sound outlet 111 connected to the first acoustic cavity 201 and a pressure relief hole 112 connected to the second acoustic cavity 202.
  • the axial direction can be the direction indicated by the central axis Z of the sound-emitting component 20.
  • the central axis Z can, for example, pass through the geometric center of the sound-emitting component 20 and the geometric center of the diaphragms 22 of the two speakers 21.
  • the central axis Z can also be the central axis of the magnetic circuit of the two speakers 21.
  • Sound pressure level is an important parameter to measure its performance. Sound pressure level is usually used to compare the sound pressure levels emitted by different sound sources and to quantify and compare the intensity of the sound. Sound pressure level is a measure used to describe the size of a sound. It represents the logarithm of the ratio between the effective value of the sound pressure and its reference value. The specific formula is as follows:
  • SPL is the sound pressure level
  • P is the sound pressure generated when the speaker 21 is working
  • Pref is the reference sound pressure.
  • the sound pressure level of the sound-emitting component 20 can be effectively improved, thereby achieving a better volume effect, allowing the user to hear clearer sound, and effectively improving the sound quality of the earphone 1.
  • the diaphragms 22 of the two speakers 21 can be opposite to each other to form a first acoustic cavity 201.
  • the first acoustic cavity 201 is a place where the diaphragm 22 vibrates to push the air to generate sound waves for the user to listen to.
  • the second acoustic cavity 202 is connected to the pressure relief hole 112 and then to the outside world, which is used to balance the air pressure inside the first shell 10.
  • the two speakers 21 can be assembled to form the first acoustic cavity 201. After the two speakers 21 are assembled, they are assembled as a whole in the first shell 10, which can simplify the structure and simplify the assembly.
  • the second acoustic cavity 202 isolated from the first acoustic cavity 201 to be formed between the sound-emitting component 20 and the first shell 10
  • the two speakers 21 of the sound-generating assembly 20 have the same acoustic characteristics and are coaxially arranged along the axis direction (i.e., the direction of the axis Z).
  • the same acoustic characteristics of the two speakers 21 means that the sound pressures generated by the two speakers 21 are the same or close to each other under the drive of the same driving signal, specifically, the ratio of the difference in sound pressure between the two speakers to the minimum sound pressure is not greater than 10%.
  • the sound-emitting component 20 also includes a mounting bracket 27, which is arranged in a ring shape.
  • the two speakers 21 are respectively assembled and matched with the two ends of the mounting bracket 27 to form a first acoustic cavity 201.
  • the mounting bracket 27 is provided with a first sound inlet hole 203 connecting the sound outlet hole 111 and the first acoustic cavity 201.
  • the sound assembly 20 is assembled by assembling the basin frames 25 of the two speakers 21 with the mounting bracket 27, and the basin frames 25 are configured to support the diaphragm 22 and the magnetic circuit system 24.
  • the structure is simple and compact, which effectively reduces the difficulty of assembly and effectively improves the assembly efficiency.
  • the assembly and cooperation of the two speakers 21 and the formation of the first acoustic cavity 201 are achieved through the assembly and cooperation between the two basin frames 25, without the need to set up additional connecting parts, which simplifies the structure while reducing the production cost, and is conducive to reducing the difficulty of assembly and improving the assembly efficiency.
  • the diaphragms 22 of the two speakers 21 are driven by their respective voice coils 23 to vibrate, so as to generate sound waves for the user to listen to on the side away from their respective magnetic circuit systems 24.
  • the two speakers 21 both generate sound waves in the first acoustic cavity 201, which effectively simplifies the structure of the sound-generating component 20 and facilitates reducing the volume of the first acoustic cavity 201, making the structure of the sound-generating component 20 more compact, which is conducive to reducing the volume of the earphone 1 and improving the wearing comfort of the earphone 1.
  • the two speakers 21 sharing the first acoustic cavity 201 can also move the resonance peak of the first acoustic cavity 201 to high frequencies, which is conducive to improving the sound quality of the earphone 1.
  • the diaphragms 22 of the two speakers 21 share the second acoustic cavity 202 and the pressure relief hole 112 on the side facing the respective magnetic circuit systems 24.
  • Such a configuration can reduce the number of pressure relief holes 112, improve the aesthetics of the earphone 1, and help ensure the consistency of the acoustic characteristics of the two speakers 21, which is beneficial to improving the sound quality of the sound-generating component 20.
  • the two speakers 21 sharing the second acoustic cavity 202 is also convenient for sealing, and can reduce the volume of the first shell 10, making the structure of the earphone 1 more compact, effectively reducing the volume of the earphone 1, and helping to improve the wearing comfort of the earphone 1.
  • the second acoustic cavity 202 includes two sub-acoustic cavities 202a isolated from each other, and the first shell 10 is provided with a pressure relief hole 112 respectively connected to each sub-acoustic cavity 202a, and the diaphragms 22 of the two speakers 21 are respectively connected to the corresponding sub-acoustic cavity 202a and the pressure relief hole 112 on the side facing the respective magnetic circuit systems 24.
  • the sound outlet hole 111 and the first sound guide hole 203 are connected to each other along the radial direction RD of the sound-emitting component 20, and the sound outlet hole 111 and the first sound guide hole 203 are respectively arranged in a strip shape, and the length direction of the sound outlet hole 111 and the first sound guide hole 203 is arranged along the circumferential direction of the sound-emitting component 20.
  • the radial direction RD of the sound-emitting component 20 is a direction perpendicular to the axial direction (i.e., the direction of the axis Z), and the circumferential direction of the sound-emitting component 20 is a direction surrounding the axial direction (i.e., the direction of the axis Z).
  • the length of the sound outlet hole 111 and the first sound inlet hole 203 in the axial direction is reduced, thereby improving the structural compactness of the sound-emitting component 20, reducing the volume of the earphone 1, and improving the wearing comfort of the earphone 1.
  • any description involving a physical/mathematical quantity (such as distance, ratio, area, length, width, thickness, etc.) between a certain numerical range may include the endpoint values of the numerical range. For example, if a distance is between A and B, the value of the distance may be A, B, or a value between A and B. Therefore, the description of the numerical range "between" in the following content shall be understood and applied in accordance with the above description.
  • the spacing distance Z22 of the mounting edges of the diaphragms 22 of the two speakers 21 along the axial direction is between 1.6 and 2.5 mm, such as 1.7 mm, 1.9 mm, 2.1 mm, 2.3 mm, etc., and of course, other values are also possible.
  • the mounting edge of the diaphragm 22 is the edge mounted on the basin frame 25.
  • the radial dimension R21 of the first acoustic cavity 201 is between 7.5 and 9.5 mm, such as 7.8 mm, 8.1 mm, 8.5 mm, 8.8 mm, 9.1 mm, etc., and of course, other values are also possible.
  • the areas of the sound outlet hole 111 and the first sound guide hole 203 can be between 5 and 18 mm 2 respectively.
  • the areas of the sound outlet hole 111 and the first sound guide hole 203 can be between 9 and 20 mm 2 .
  • the areas of the sound outlet 111 and the first sound guide hole 203 can be 6mm2 , 8mm2 , 9mm2 , 10mm2 , 12mm2 , 14mm2 , 17mm2 , 19mm2, etc., respectively, and other values are also possible.
  • the structural compactness of the sound generating component 20 can be improved while the resonance peak of the first acoustic cavity 201 is moved to a high frequency, which is beneficial to improving the sound quality of the earphone 1.
  • the first accommodating cavity 110 can be configured to be approximately spherical in order to match the appearance of the earphone 1, so that the sound-generating component 20 is configured in such a way that it is convenient for the sound-generating component 20 to be assembled into the first accommodating cavity 110, effectively improving the space utilization rate of the first accommodating cavity 110, and effectively improving the assembly efficiency of the earphone 1.
  • the outer contour of the sound-generating component 20 to be closer to a sphere, it is more suitable for the shape of the concha cavity E12, and then the space in the concha cavity E12 can be fully utilized, effectively improving the space utilization rate in the concha cavity E12.
  • the ratio of the axial dimension Z21 of the sound component 20 to the radial dimension R23 of the support position of the basin frame 25 for the diaphragm 22 is between 0.8 and 1.3, for example, the ratio may be 0.9, 1, 1.1, etc.
  • the ratio of the maximum axial dimension Z21 to the maximum radial dimension R20 of the sound component 20 is between 0.8 and 1.3 mm, and the ratio may be 0.9, 1, 1.1, etc.
  • the axial dimension Z21 of the sound component 20 and the radial dimension R23 of the support position of the basin frame 25 for the diaphragm 22 are very close, so that the outer contour of the sound component 20 is closer to a sphere, which is convenient for better matching with the first accommodating cavity 110 which is approximately spherical, effectively improving the space utilization rate of the first accommodating cavity 110, effectively reducing the difficulty of assembly and improving the assembly efficiency.
  • the axial dimension Z21 of the sound component 20 is 9.5 mm
  • the radial dimension R23 of the support position of the basin frame 25 to the diaphragm 22 is 8.1 mm, and the ratio between the two is about 1.17.
  • the axial dimension Z21 of the sound component 20 is 9.5 mm
  • the radial dimension R23 of the support position of the basin frame 25 to the diaphragm 22 is 8.8 mm, and the ratio between the two is about 1.08.
  • the sound-emitting assembly 20 is provided with a mounting boss 271
  • the first sound-introducing hole 203 is provided on the mounting boss 271
  • the mounting boss 271 abuts against the first shell 10 at the periphery of the sound-emitting hole 111 (as shown in FIG. 7 ), so that the first sound-introducing hole 203 and the sound-emitting hole 111 are isolated from the second acoustic cavity 202.
  • the mounting boss 271 is also provided on the first shell 10, but not on the sound-emitting assembly 20.
  • the first shell 10 is provided with a mounting boss 271
  • the sound-emitting hole 111 is provided on the mounting boss 271
  • the mounting boss 271 abuts against the sound-emitting assembly 20 at the periphery of the first sound-introducing hole 203, so that the first sound-introducing hole 203 and the sound-emitting hole 111 are isolated from the second acoustic cavity 202.
  • the first sound inlet hole 203 and the sound outlet hole 111 are isolated from the second acoustic cavity 202 while the connection between the first shell 10 and the sound-emitting component 20 is realized, thereby simplifying the structure and improving the isolation effect, thereby preventing the sound output from the first sound inlet hole 203 and the sound outlet hole 111 from being affected by the pressure relief of the second acoustic cavity 202 through the pressure relief hole 112, and improving the sound quality of the earphone 1.
  • the sound-emitting component 20 further includes a mounting bracket 27, and a mounting boss 271 is located on the mounting bracket 27.
  • the mounting bracket 27 further includes a bracket body 272 connected to the mounting boss 271 along the circumference of the sound-emitting component 20 and arranged in a ring-shaped shape.
  • Two first support surfaces 2701 facing each other along the axial direction i.e., the direction of the axis Z) are arranged on the bracket body 272.
  • the outer end surfaces 250 of the two basin frames 25 close to the side of each diaphragm 22 are respectively supported on the corresponding first support surfaces 2701, and the mounting bosses 271 protrude from the bracket body 272 along the axial direction (i.e., the direction of the axis Z) and the radial direction RD of the sound-emitting component 20, and are arranged on the outside of the outer circumferential surfaces of the two basin frames 25.
  • Such an arrangement can ensure the structural strength of the mounting boss 271 while reserving sufficient space for the mounting boss 271 to set the first sound inlet hole 203, and the two basin frames 25 are respectively supported on the corresponding first supporting table surfaces 2701 to improve the stability of the structure, thereby effectively improving the stability and reliability of the overall structure of the sound-generating component 20.
  • the mounting bracket 27 may be a plastic molded part, and the radial thickness R24 of the mounting boss 271 is between 0.2 and 0.7 mm.
  • the radial thickness R24 of the mounting boss 271 may be 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, etc., and of course, other values may also be used.
  • the mounting boss 271 includes a connecting bridge 2723 arranged along the width direction of the first sound-introducing hole 203 and connecting the long side hole edge 111c of the first sound-introducing hole 203, and the first sound-introducing hole 203 is divided into at least two first sub-sound-introducing holes spaced from each other along the length direction of the first sound-introducing hole 203 by the connecting bridge 2723.
  • the mounting bracket 27 may be, for example, injection molding, compression molding, etc., and of course, it may also be made by other molding methods.
  • the mounting boss 271 may not be provided with a connecting bridge 2723, so that a first sound-introducing hole 203 with a larger area can be obtained.
  • the circumferential size of the first sound inlet hole 203 in FIG. 13 can be appropriately reduced to maintain structural strength, but since the connecting bridge 2723 is eliminated, the area of the first sound inlet hole 203 can still be increased, thereby improving the sound quality.
  • the radial dimension R20 of the sound-emitting component 20 is not excessively increased while ensuring the space for the first sound-introducing hole 203, thereby achieving the overall compactness of the earphone 1.
  • the setting of the connecting bridge 2723 facilitates the molding of the mounting bracket 27 and effectively improves the connection strength of the mounting boss 271, thereby effectively improving the effectiveness and reliability of the sound-emitting component 20.
  • the bracket body 272 includes a supporting portion 2721 and a limiting portion 2722, the limiting portion 2722 is connected to the supporting portion 2721, the first supporting table 2701 is arranged on the supporting portion 2721, the limiting portion 2722 protrudes from the first supporting table 2701 along the axial direction (i.e., the direction of the axis Z) and is embedded in the basin frame 25 to limit the basin frame 25 along the radial RD of the sound-emitting component 20.
  • the support body 272 may be provided with a recessed portion (not shown).
  • the limiting portion 2722 is not convexly provided, but concavely provided, thereby forming a recessed portion, and part of the basin frame 25 is embedded in the recessed portion to limit the basin frame 25 along the radial direction RD of the sound generating assembly 20.
  • the structure is simple and stable, easy to assemble and disassemble, and the assembly efficiency is improved while effectively improving the structural stability of the sound component 20.
  • sealants 28 are respectively provided between the outer end surfaces 250 of the two basin frames 25 and the first support table surface 2701, and between the inner circumference of the mounting boss 271 and the outer circumference of the two basin frames 25.
  • the sealants 28 are provided at the above positions, the isolation effect of the first acoustic cavity 201 can be effectively improved, thereby improving the sound quality of the earphone 1, and the elasticity of the sealants 28 is good.
  • the sealants 28 can undergo a certain elastic deformation to make it more fitted, thereby improving the stability and sealing of the connection between the mounting boss 271 and the first shell 10, which is conducive to improving the sound quality of the earphone 1.
  • the basin frame 25 is provided with a first cut corner 251 at a corner near the connection position between the outer circumference of the limiting portion 2722 and the first supporting table 2701 to form a first glue containing groove 252.
  • the supporting portion 2721 is provided with a second cut corner 2702 at a corner near the connection position between the outer end surface 250 of the basin frame 25 and the outer circumference of the basin frame 25 to form a second glue containing groove 2703.
  • the capacity of the sealant 28 is effectively increased, and while the sealing and isolation effects are improved, the glue overflow is effectively reduced, thereby effectively reducing the possibility of interference with other components, which is conducive to reducing the difficulty of assembly.
  • the mounting boss 271 is provided with a third cut corner 2704 at a corner near the outer peripheral surface of the two basin frames 25 to form a third glue holding groove 2705.
  • the provision of the third cut corner 2704 can further improve the amount of glue held and the isolation effect of the first acoustic cavity 201.
  • the second cut corner 2702 and the third cut corner 2704 are connected to each other, so that the second glue holding groove 2703 formed by the second cut corner 2702 and the third glue holding groove 2705 formed by the third cut corner 2704 can be interconnected, and then continuous coating can be performed during glue coating, effectively simplifying the process and improving assembly efficiency.
  • the basin frame 25 is also provided with a second supporting table 253, which is located on the inner side of the outer end surface 250 of the basin frame 25 along the radial direction RD of the sound-emitting component 20, and is spaced apart from the outer end surface 250 of the basin frame 25 along the axial direction (i.e., the direction of the axis Z).
  • the mounting edge of the diaphragm 22 is supported on the second supporting table 253, and the projection of the limiting portion 2722 along the axial direction (i.e., the direction of the axis Z) at least partially falls on the second supporting table 253.
  • the second support table 253 is provided to support the diaphragm 22, and the second support table 253 is located on the inner side of the outer end surface 250 of the basin frame 25 along the radial direction RD of the sound-emitting component 20, which is conducive to improving the connection stability of the diaphragm 22, thereby improving the reliability of the operation of the diaphragm 22.
  • the limiting portion 2722 is arranged so that the projection along the axial direction (i.e., the direction of the axis Z) at least partially falls on the second support table 253, so as to achieve reasonable use of space and improve the utilization rate of space, and at the same time, it is conducive to increasing the size of the first acoustic cavity 201 in the radial direction RD of the sound-emitting component 20 while ensuring the connection stability, thereby improving the sound quality of the earphone 1.
  • the number of second sound-introducing holes 204 is multiple and is spaced apart along the circumference of the sound-emitting component 20, and a soldering pad 26 located between two second sound-introducing holes 204 is provided on the basin frame 25.
  • the distance from some of the second sound-introducing holes 204 to the pressure relief hole 112 is smaller than the distance from the soldering pad 26 to the pressure relief hole 112.
  • the soldering pad 26 is used to receive electrical signals so that the speaker 21 can perform corresponding work.
  • the acoustic path of the sound output through the pressure relief hole 112 can be shortened, which is beneficial to improving the utilization rate of the volume of the second acoustic cavity 202, and is beneficial to improving the pressure relief efficiency and the sound quality of the earphone 1.
  • the section corresponding to the cutting line U ⁇ U shown in FIG. 15 is the reference section SF.
  • the distance from the above-mentioned part of the second sound-introducing holes 204 to the pressure relief hole 112 is not greater than 0.5 mm. Further optionally, the distance is not greater than 0.3 mm. If the distance from the second sound-introducing holes 204 to the pressure relief hole 112 is too large, it will lead to a reduction in the pressure relief performance, thereby affecting the sound quality of the earphone 1. By reasonably setting the distance from the part of the second sound-introducing holes 204 to the pressure relief hole 112, the pressure relief efficiency is effectively improved, which is conducive to improving the sound quality of the earphone 1.
  • the second sound inlet hole 204 most adjacent to the pressure relief hole 112 is arranged relative to the welding pad 26 along the radial RD of the sound-emitting component 20.
  • Such an arrangement can prevent the operation of the welding pad 26 and the pressure relief work of the earphone 1 from interfering with each other, which is beneficial to improving the pressure relief performance of the earphone 1 and the sound quality of the earphone 1.
  • the two basin frames 25 are respectively provided with welding pads 26 and second sound guide holes 204 spaced apart from each other along the circumference of the sound-generating component 20.
  • each basin frame 25 and the mounting bracket 27 are provided with mutually matching limiting structures 200a, 200b, the limiting structures 200a, 200b are used to limit the basin frame 25 and the mounting bracket 27 along the circumference of the sound-generating component 20, and the limiting structures 200a, 200b of the two basin frames 25 are relatively arranged along the axial direction (i.e., the direction of the axis Z).
  • the sound-generating component 20 has a radial plane RF arranged along the axial direction (i.e., the direction of the axis Z) and passing through the limiting structures 200a, 200b, the welding pads 26 on each basin frame 25 are mirror-imaged relative to the radial plane RF, and the sound guide holes on each basin frame 25 are respectively mirror-imaged relative to the radial plane RF.
  • the limiting structures 200a and 200b are used to limit the two basins 25 along the circumference of the sound-generating assembly 20, thereby preventing the two speakers 21 from rotating relative to each other, and effectively improving the structural stability and reliability of the sound-generating assembly 20.
  • the soldering pads 26 and the second sound-introducing holes 204 on each basin 25 are set in mirror images relative to the radial plane RF, so that the directivity of the soldering pads 26 and the second sound-introducing holes 204 on the two basins 25 is consistent, the consistency of the acoustic characteristics of the two speakers 21 in the first accommodating cavity 110 is improved, which is beneficial to improving the sound quality of the earphone 1.
  • the two speakers 21 can reuse the same basin 25 design, effectively reducing material costs and production costs.
  • the number of the limiting structures 200a and 200b is only one group.
  • the basin frame 25 is arranged in a mirror-symmetrical manner with respect to the radial plane RF, the two basin frames 25 are relatively installed on one side of the limiting structure 200a during installation.
  • the soldering pads 26 on each basin frame 25 are also relatively arranged and located on the same side of the sound-emitting component 20, thereby further making the directivity of the soldering pads 26 on the two speakers 21 consistent, thereby improving the consistency of the acoustic characteristics of the two speakers 21 in the first accommodating cavity 110, which is beneficial to improving the sound quality of the earphone 1.
  • the first shell 10 may include a first hard shell 11 and a second hard shell 12, the first hard shell 11 is connected to the ear hook 300, the first hard shell 11 and the second hard shell 12 enclose a first accommodating cavity 110, and the sound outlet hole 111 is arranged on the second hard shell 12.
  • the integrity of the sound hole 111 is effectively guaranteed, and the possibility of interference with the sound hole 111 is reduced, thereby improving the stability and reliability of the sound hole 111, and reducing the difficulty of aligning the first hard shell 11 and the second hard shell 12, thereby reducing the difficulty of assembling the sound component 20 and improving the assembly efficiency of the sound component 20.
  • the sound hole 111 is set in this way without penetrating the first hard shell 11 and the second hard shell 12 at the same time, which can avoid the uneven surface of the sound hole 111, thereby affecting the installation of the tuning net and the steel net.
  • the sound outlet hole 111 and the pressure relief hole 112 are respectively arranged in mirror symmetry with respect to a symmetry plane SF arranged along the length direction of the ear hook 300 .
  • the earphone 1 further includes a microphone 30, and a sound inlet 101 for directing external sound to the microphone 30 is provided on the first shell 10, and the sound inlet 101 is arranged to intersect with the symmetry plane SF.
  • the microphone 30 can be used to collect sound, so that the earphone 1 can adapt to different usage scenarios such as playing music and making calls, and the sound inlet 101 is arranged to intersect with the symmetry plane SF, while ensuring the effectiveness of the microphone 30 in collecting sound through the sound inlet 101, so that the earphone 1 can adapt to the use of the left ear and the right ear at the same time, effectively improving the adaptability of the earphone 1.
  • the section corresponding to the section line V ⁇ V in FIG4 is the symmetry plane SF.
  • Figure 21 is a schematic diagram of the cross-sectional structure of the sound-emitting part 100 with the symmetry plane SF as the cross-section.
  • the minimum spacing distance D10 between the sound outlet 111 and the pressure relief hole 112 is between 6.5 and 10 mm.
  • the minimum spacing distance D10 is not less than 7 mm.
  • Figure 21 is a cross-section with the symmetry plane SF.
  • Acoustic short circuit means that when the diaphragm 22 of the speaker 21 moves forward or backward, the sound waves generated are in opposite phases, causing these sound waves to cancel each other out, thereby making the sound lighter or sounding unnatural. If the above-mentioned spacing distance D10 is too short, acoustic short circuit may occur.
  • the spacing distance D10 between the sound outlet 111 and the pressure relief hole 112 the possibility of acoustic short circuit can be effectively reduced, which is beneficial to improving the sound quality of the earphone 1.
  • the pressure relief hole 112 includes a first hole portion 1121 and a second hole portion 1122 along the length direction of the pressure relief hole 112, and a third hole portion 1123 connected between the first hole portion 1121 and the second hole portion 1122, wherein at least a partial width W1 of the first hole portion 1121 and a width of at least a partial position of the second hole portion 1122 are greater than a width W3 of the third hole portion 1123.
  • the widths of the first hole portion 1121, the second hole portion 1122, and the third hole portion 1123 refer to the dimensions in the width direction perpendicular to the length direction of the pressure relief hole 112.
  • Such a setting can effectively reduce the possibility of the pressure relief hole 112 being blocked by the auricle or other ear EAR positions while increasing the area of the pressure relief hole 112, which is beneficial to improving the pressure relief effect, and further to improving the sound quality of the earphone 1. Moreover, such a setting, while maintaining the pressure relief effect, the pressure relief hole 112 as a whole does not need to be set according to the maximum width, so that the size is more moderate, which is also convenient for improving the aesthetics of the earphone 1.
  • the maximum radial dimension R20 of the sound-generating assembly 20 is set to the maximum radial dimension of the mounting bracket 27 or the basin frame 25, so that during assembly, the mounting bracket 27 or the basin frame 25 is used as the main force-bearing component to effectively protect the diaphragm 22 and the voice coil 23, and effectively improve the reliability and effectiveness of the sound-generating assembly 20.
  • the maximum axial dimension of the sound-generating assembly 20 is set to the maximum axial dimension between the magnetic shields 241 of the two speakers 21 along the axial direction (i.e., the direction of the axis Z).
  • the resonance peak frequency of the diaphragms 22 of the two speakers 21 is between 200 and 300 Hz, and the absolute difference in the resonance peak frequency of the diaphragms 22 of the two speakers 21 is less than or equal to 50 Hz.
  • the resonance peak may be the first resonance peak that appears during the frequency sweep from low frequency to high frequency.
  • the resonance peak frequency refers to the frequency of the first resonance peak that appears in sequence from low to high frequency when performing an electroacoustic frequency sweep test on the structure in the sound-emitting part 100, such as the speaker 21, the first shell 10, and the internal cavity of the first shell 10.
  • the position where the resonance peak appears corresponds to the position where the impedance curve of the sound-emitting part 100 suddenly increases.
  • the sound outlet hole 111 is arranged in a strip shape, and has a first end 111a and a second end 111b arranged at intervals along the length direction of the sound outlet hole 111.
  • the first end 111a is arranged toward the ear hole E11, and the distance D10 between the outer wall surface of the first shell 10 at the second end 111b and the inner wall surface of the concha cavity E12 is smaller than the distance D10 between the outer wall surface of the first shell 10 at the first end 111a and the inner wall surface of the concha cavity E12.
  • the first shell 10 By setting the first shell 10 so that the first end 111a of the sound outlet 111 faces the ear hole, so that the sound waves can enter the ear hole as much as possible through the sound outlet 111, and the transmission path of the sound waves is effectively shortened, the volume effect of the sound heard by the user is effectively improved, which is conducive to improving the sound quality of the earphone 1.
  • the outer wall surface of the first shell 10 and the inner wall surface of the cavity concha are in contact with each other.
  • This arrangement can block the sound from propagating in the direction away from the ear hole, and is more conducive to the first shell 10 and the cavity concha forming a horn structure that reflects the sound toward the ear hole, thereby helping to reduce the sound leakage of the earphone 1, effectively improve the sound pressure at the ear hole, and effectively increase the listening volume.
  • the width-to-length ratio of the sound outlet hole 111 is between 0.15 and 0.30, for example, 0.18, 0.20, 0.25, etc.
  • the length of the sound outlet hole 111 can be between 9mm and 16.5mm, for example, 10mm, 12mm, 13mm, 14mm, 16mm, etc.
  • the inner width of the sound hole 111 is 1.95 mm
  • the outer width is 2.58 mm
  • the length of the sound hole 111 is 12.9 mm.
  • the arc-chord ratio of the long side hole edge 111c of the sound outlet hole 111 is between 1.05 and 1.4, or is greater than or equal to 1.02 and less than 1.05.
  • the arc-chord ratio of the long side hole edge 111c of the sound outlet hole 111 can be 1.02, 1.04, 1.05, 1.1, 1.2, 1.3, etc.
  • the length of the sound outlet hole 111 is between 9 and 16.5 mm, or is greater than or equal to 5 mm and less than 9 mm.
  • the length of the sound outlet hole 111 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 12 mm, 13 mm, 14 mm, 16 mm, etc.
  • the size of the sound hole 111 is more consistent with the size and shape of the concha cavity and the ear hole, which is more convenient to form a horn structure for enhancing the sound, effectively improving the sound effect of the earphone 1, effectively increasing the sound pressure at the ear hole, and effectively increasing the listening volume.
  • This arrangement can make the first end 111a of the sound-emitting hole 111 closer to the ear hole, and the first shell 10 near the second end 111b can abut against the concha cavity and be clamped on both sides of the user's ear EAR with the abutting portion 400, thereby achieving a stable clamping of the ear EAR while utilizing the concha cavity to increase the volume and sound pressure, and the portion of the first shell 10 abutting against the concha cavity can further block the sound from propagating in a direction away from the ear hole, which is beneficial to reducing sound leakage.
  • the length D12 of the long side edge 111c of the sound outlet hole 111 between the first end 111a and the first reference point M is between 2 and 5.5 mm, for example, it can be 2.55 mm, 3.56 mm, 4 mm, 4.76 mm, etc.
  • the length D13 of the long side edge 111c of the sound outlet hole 111 between the second end 111b and the first reference point M is between 4.5 and 8 mm, for example, it can be 5.53 mm, 6 mm, 6.73 mm, 7.81 mm, etc.
  • the above lengths all indicate the distance between corresponding positions on the projection contour of the sound hole 111 on the symmetry plane.
  • the sound reflection effect of the horn structure formed by the outer wall surface of the first shell 10 and the concha cavity is improved, and the listening volume and the user's sense of use are effectively improved.
  • the arc-chord ratio of the long side hole of the sound outlet hole 111 between the first end 111a and the first reference point M is between 1.02 and 1.05, or is greater than or equal to 1.001 and less than 1.02, for example, it can be 1.001, 1.005, 1.01, 1.02, 1.03, 1.04, etc.; the arc-chord ratio of the long side hole of the sound outlet hole 111 between the second end 111b and the first reference point M is between 1.02 and 1.05, or is greater than 1.05 and less than or equal to 1.07, for example, it can be 1.03, 1.04, 1.05, 1.06, 1.07, etc.
  • the above arc-chord ratios all refer to the arc-chord ratios between corresponding positions on the projection contour of the sound hole 111 on the symmetry plane.
  • the long side hole edge 111c of the sound outlet hole 111 has a first normal direction F1 at the first reference point M
  • the long side hole edge 111c of the sound outlet hole 111 has a second normal direction F2 at the first end 111a
  • the long side hole edge 111c of the sound outlet hole 111 has a third normal direction F3 at the second end 111b
  • the angle ⁇ 1 between the first normal direction F1 and the second normal direction F2 is between 30° and 42°
  • the angle ⁇ 2 between the first normal direction F1 and the third normal direction F3 is between 50° and 60°.
  • the angle ⁇ 1 between the first normal direction F1 and the second normal direction F2 can be, for example, 32°, 35°, 37°, etc.
  • the angle ⁇ 2 between the first normal direction F1 and the third normal direction F3 can be, for example, 53°, 55°, 57°, etc.
  • the above angles all indicate the angles between corresponding positions on the projection contour of the sound hole 111 on the symmetry plane.
  • the long side hole edge 111c of the sound hole 111 has a first normal direction F1 at the first reference point M
  • the long side hole edge 111c of the sound hole 111 has a second normal direction F2 at the first end 111a
  • the long side hole edge 111c of the sound hole 111 has a third normal direction F3 at the second end 111b
  • the angle ⁇ 1 between the first normal direction F1 and the second normal direction F2 is between 30° and 42°, or greater than or equal to 15° and less than 30°
  • the angle ⁇ 2 between the first normal direction F1 and the third normal direction F3 is between 50° and 60°, or greater than or equal to 25° and less than 50°.
  • the angle ⁇ 1 between the first normal direction F1 and the second normal direction F2 can be, for example, 15°, 20°, 25°, 30°, 32°, 35°, 37°, etc.
  • the angle ⁇ 2 between the first normal direction F1 and the third normal direction F3 can be, for example, 25°, 30°, 35°, 40°, 50°, 53°, 55°, 57°, etc.
  • the above angles all indicate the angles between corresponding positions on the projection contour of the sound hole 111 on the symmetry plane.
  • the sound hole 111 has a median line arranged along its length direction, the sound hole 111 is arranged to intersect with a reference section SF arranged along the length direction of the ear hook 300, and the angle between the plane where the median line is located and the reference section SF is between 0° and 45°, and the sound hole 111 is offset toward the earlobe.
  • the median line can be a virtual curve that divides the sound hole 111 into two parts along the length direction.
  • the sound hole 111 is arranged to intersect with a reference section SF arranged along the length direction of the ear hook 300, and the angle between the plane where the median line is located and the reference section SF is between 15° and 45°, for example, 20°, 30°, etc.
  • the reference section SF can coincide with a symmetry plane arranged along the length direction of the ear hook 300, so the symmetry plane is also marked as the symmetry plane SF when describing it later.
  • the reference section SF can be arranged along the length direction of the ear hook 300, and the difference between the parts of the ear hook 300 on both sides of the reference section SF is minimal or consistent.
  • the reference cross section SF and the symmetry plane of the ear hook are parallel to each other, but may be offset by a small interval.
  • the sound hole 111 is set to be biased toward the earlobe, so that the sound output by the sound hole 111 is transmitted to the ear hole as much as possible while ensuring the wearing comfort of the user, thereby effectively improving the usability of the earphone 1.
  • the earphone 1 may deflect downward under the action of gravity as the user moves.
  • Such a setting can ensure that the sound hole 111 is as much as possible facing the ear hole even when the earphone 1 is deflected, thereby effectively increasing the listening volume of the user when the earphone 1 is in a deflected state, thereby improving the user's usability.
  • the plane where the midline is located coincides with the reference section SF.
  • the sound outlet 111 is mirror-symmetrical with respect to the reference section SF. This arrangement allows the earphone 1 to be worn and used by both the left ear and the right ear, effectively improving the adaptability of the earphone 1 while ensuring the wearing comfort of the user.
  • the sound-emitting portion 100 has a second reference point N closest to the abutting portion 400.
  • the second reference point N is the intersection of the shortest line between the sound-emitting portion 100 and the abutting portion 400 and the outer wall surface of the sound-emitting portion 100, and the midpoint of the shortest line is O.
  • the sound-emitting portion 100 and the abutting portion 400 just abut or the abutting area is very small, then the abutting point between the sound-emitting portion 100 and the abutting portion 400 is considered to be the second reference point N.
  • the abutting area between the sound-emitting portion 100 and the abutting portion 400 is relatively large, then on the reference cross section SF, the midpoint of the arc corresponding to the abutting area between the outer wall surface of the sound-emitting portion 100 and the abutting portion 400 is the second reference point N.
  • the inner contour of the ear hook 300 in the wearing state has a third reference point C farthest from the second reference point N in the area near the edge of the helix, and the sound hole 111 is located on the side of the second reference point N farthest from the third reference point C, and on the outer wall surface of the sound-emitting part 100, the distance D13 from the second end 111b to the second reference point N is between 2.2 and 4.2 mm, and the distance from the first end 111a to the second reference point N is between 9 and 12.4 mm.
  • the distance from the second end 111b to the second reference point N can be, for example, 2.3 mm, 2.6 mm, 2.9 mm, etc., and the distance from the first end 111a to the second reference point N can be 9.8 mm, 10.7 mm, 11.6 mm, etc., and of course it can also be other values.
  • the above distances all indicate the distances between corresponding positions on the projected contour of the sound hole 111 on the symmetry plane.
  • the pressure relief hole 112 and the sound outlet hole 111 are separated from each other by the contact area between the sound-emitting portion 100 and the ear EAR (e.g., the concha cavity).
  • the contact area between the sound-emitting portion 100 and the ear EAR e.g., the concha cavity.
  • the number of the pressure relief hole 112 is one, and the pressure relief hole 112 is arranged in a strip shape, and the reference cross section SF is arranged along the width direction of the pressure relief hole 112 and intersects with the reference cross section SF.
  • This arrangement ensures that the pressure relief area is sufficient to effectively ensure the pressure relief effect of the pressure relief hole 112, while making the pressure relief hole 112 not extend too much in the direction of the ear hook 300, which is conducive to improving the aesthetics of the earphone 1.
  • the number of the pressure relief holes 112 is two, which are respectively arranged on both sides of the reference section SF, and the pressure relief holes 112 are mirror-symmetrical with respect to the reference section SF, and the reference section SF is arranged along the width direction of the pressure relief holes 112 (that is, the reference section SF is parallel to the width direction of the pressure relief holes 112, and an error within 15° is allowed).
  • This arrangement ensures that the pressure relief area is effectively guaranteed to ensure the pressure relief effect of the pressure relief holes 112, while the pressure relief holes 112 do not extend too much in the direction of the ear hook 300, which is beneficial to improving the aesthetics of the earphone 1.
  • the sound-emitting component 20 is provided with at least one second sound-introducing hole 204 connected to the pressure relief hole 112 via the first accommodating space, and the distance between at least one second sound-introducing hole 204 and the pressure relief hole 112 is not greater than 0.5 mm, or is greater than 0.5 mm and less than or equal to 4 mm.
  • the distance between at least one second sound-introducing hole 204 and the pressure relief hole 112 is not greater than 3 mm.
  • the distance is not greater than 2 mm.
  • the distance is not greater than 0.4 mm, and optionally, the distance is not greater than 0.3 mm.
  • the pressure relief performance will be reduced, thereby affecting the sound quality of the earphone 1.
  • the pressure relief efficiency is effectively improved, which is conducive to improving the sound quality of the earphone 1.
  • the earphone 1 further includes a microphone 30, and a sound inlet hole 101 for directing external sound to the microphone 30 is provided on the first shell 10, and the sound inlet hole 101 is arranged to intersect with the reference section SF.
  • the microphone 30 can be used to collect sound, so that the earphone 1 can adapt to different usage scenarios such as playing music and making calls, and the sound inlet hole 101 is arranged to intersect with the reference section SF, while ensuring the effectiveness of the microphone 30 in collecting sound through the sound inlet hole 101, so that the earphone 1 can adapt to the use of the left ear and the right ear at the same time, effectively improving the adaptability of the earphone 1.
  • the section corresponding to the section line V ⁇ V in FIG. 4 is the reference section SF.
  • the ear hook 300 provides an elastic force between the sound-emitting portion 100 and the abutting portion 400, so that the sound-emitting portion 100 and the abutting portion 400 have a clamping force F clamped on both sides of the auricle in the wearing state.
  • the ear hook 300 is configured to make the sound-emitting portion 100 and the abutting portion 400 abut against each other in a natural state to form a preload force F0.
  • the ear hook 300 When the ear hook 300 is worn, it can undergo a certain elastic deformation to exert a certain elastic force on both sides of the user's ear helix. Under the action of the elastic force, the sound-emitting portion 100 and the contact portion 400 contact the two sides of the auricle to clamp the ear. However, if the elastic force provided by the ear hook 300 is too large, the clamping force F is too large, which will cause discomfort to the ear. If it is too small, the clamping force F is too small, which makes it difficult to wear stably.
  • the elastic coefficient of the ear hook 300 is usually set to be larger, but this will cause the elastic force applied to be too large when the thickness of the clamped ear is larger, causing pain, and the wearing comfort is not high.
  • the large elastic coefficient causes a large change in the clamping force F when adapting to ears of different thicknesses, which in turn causes a large difference in the clamping force F, resulting in a large difference in user experience and low compatibility.
  • the clamping force change line L1 has no pre-tightening force, and the elastic coefficient is large, resulting in a large clamping force F when the distance between the sound-emitting part 100 and the abutment part 400 changes from Xs to Xm , and the clamping force change amount ⁇ F1 changes greatly.
  • the elastic coefficient of the ear hook 300 can be reduced, so that when clamping the ear with a smaller thickness and a larger thickness, the elastic force applied by the ear hook 300 changes less, effectively reducing the difference in the clamping force F between the ear with a smaller thickness and the ear with a larger thickness, effectively improving the adaptability and wearing comfort of the earphone 1, so that the earphone 1 can be worn by users with more ear sizes.
  • the clamping force variation line L2 has a smaller clamping force F when the distance between the sound-emitting part 100 and the abutting part 400 changes from Xs to Xm on the basis of having a pre-tightening force F0, and the clamping force variation ⁇ F2 is also smaller, so that the above technical effects can be effectively achieved, such as reducing the difference in the clamping force F between the ear with a smaller thickness and the ear with a larger thickness, effectively improving the adaptability and wearing comfort of the earphone 1, so that the earphone 1 can be worn by users with more ear sizes.
  • the ear thickness Xs of people with small ears is approximately 3.8mm, while the ear thickness Xm of people with large ears is approximately 5.5mm.
  • the elastic coefficient of the ear hook 300 is set so that when the minimum interval between the sound-emitting part 100 and the abutting part 400 increases from 3.8 mm to 5.5 mm, the change in the elastic force is less than or equal to 20 g-f, for example, 5 g-f, 10 g-f, or 15 g-f.
  • the clamping force F is small, and the clamping force change ⁇ F2 is also small.
  • the elastic force can have a small change while meeting the clamping requirements, so that when the earphone 1 clamps ears with larger thickness and smaller thickness, the clamping force provided by the ear hook 300 has a small difference, thereby effectively improving the adaptability of the earphone 1 while meeting the wearing comfort.
  • the elastic coefficient and preload force of the ear hook 300 are set so that when the minimum interval between the sound-emitting part 100 and the abutment part 400 increases from 3.8 mm to 5.5 mm, the elastic force is between 25 g-f and 65 g-f, for example, 30 g-f, 40 g-f, 50 g-f, etc.
  • a suitable clamping force F is provided to the user when the ear hook 300 is worn, thereby ensuring wearing stability and improving wearing comfort.
  • the preload force F0 can be measured by a thin film pressure sensor 600, specifically, by clamping a thin film pressure sensor 600 between the abutting portion 400 and the sounding portion 100.
  • the preload force F0 can also be measured by a tension meter/sensor 607, 613, for example, by fixing one of the sounding portion 100 and the abutting portion 400, and pulling the other of the sounding portion 100 and the abutting portion 400, so that the two are just in contact/separated, or the minimum distance between the two is a small distance, the measured tension is the preload force.
  • the small distance is, for example, 0 to 0.8 mm.
  • the clamping force F can be measured when the sounding part 100 and the abutting part 400 are arranged horizontally, specifically, the abutting part 400 is fixed by a tension meter/sensor, and the sounding part 100 is pulled for measurement.
  • the wire displacement is pulled, for example, 3.8 mm to 5.5 mm for measurement.
  • the inner side of the angle bracket 601 in the Y direction and the inner side of the angle bracket 602 in the Y direction are tangent to the two sides of the earphone 1 near the two ends of the ear hook 300, respectively, so that the earphone 1 is fixed between the angle bracket 601 and the angle bracket 602.
  • the dynamometer 607 is connected to the angle bracket 602 in the X direction, for example, the dynamometer 607 and the angle bracket 602 are fixed by screws 606.
  • the earphone 1 can be further fixed by an adhesive (e.g., quick-drying glue, hot melt adhesive, etc.) or other fixing methods that do not damage the structure of the earphone 1, so that the connection positions of the earphone 1 and the two corner brackets 601 and 602 are close to the horizontal direction.
  • an adhesive e.g., quick-drying glue, hot melt adhesive, etc.
  • the connection positions of the earphone 1 and the two corner brackets 601 and 602 are close to the horizontal direction.
  • an adhesive e.g., quick-drying glue, hot melt adhesive, etc.
  • the auxiliary plate 604 When measuring, the auxiliary plate 604 is fixed, and the auxiliary plate 603 is moved with a tensile force in the X direction, so that the sound-emitting part 100 and the abutting part 400 are pulled apart, and the magnitude of the tensile force is obtained by the dynamometer 607, and the distance between the auxiliary plate 603 and the auxiliary plate 604, that is, the distance between the sound-emitting part 100 and the abutting part 400 is obtained by a vernier caliper.
  • the abutting portion 400 is fixed between the two clamping plates by a fastener 608, one end of the force measuring line 612 is connected to the shell of the sound-emitting portion 100 away from the abutting portion 400 by an adhesive (e.g., quick-drying glue, hot melt adhesive, etc.) (e.g., the force measuring line 612 is connected to the sound-emitting portion 100 at position C, and the symmetry plane SF of the ear hook 300 can pass through position C), and the other end of the force measuring line 612 is connected to the force gauge 614.
  • the force measuring line 612 is parallel to the X direction.
  • the magnetic coupling matching structure 50 includes a first magnetic coupling matching member 51 disposed on the sound-emitting portion 100 and a second magnetic coupling matching member 52 disposed on the abutting portion 400 , and the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 are magnetically attracted to each other.
  • the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can be magnets, and the first magnetic coupling matching member on the sound-emitting portion 100 can be the magnet 242 of the speaker 21 , or can be an additional magnet or other magnetic member.
  • the attraction between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can compensate for the clamping force F between the sound-emitting portion 100 and the abutting portion 400.
  • the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can attract each other, generating an attraction force FA to compensate for the clamping force F provided by the ear hook 300 to the sound-emitting portion 100 and the abutting portion 400. That is, in the wearing state, the clamping force F includes the attraction force FA and the elastic force Fk generated by the elastic deformation of the ear hook 300.
  • the relationship between the distance and the attraction between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can be expressed by formula (1):
  • a force gauge and pads of different thicknesses can be used to measure different attractive forces corresponding to different distances between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52.
  • the ear hook 300 of the earphone 1 can be cut off, and then any one of the sound-emitting portion 100 and the abutting portion 400 can be fixed, and the other of the sound-emitting portion 100 and the abutting portion 400 can be connected to the force gauge.
  • the sound-emitting portion 100, the abutting portion 400 and the force gauge can be roughly referred to Figures 29 and 30.
  • the thin film pressure sensor and pad materials of different thicknesses are placed between the sound-emitting part 100 and the abutting part 400, so that the thin film pressure sensor is squeezed by the attraction force of the first magnetic coupling matching component 51 in the sound-emitting part 100 and the second magnetic coupling matching component 52 in the abutting part 400, thereby measuring the attraction force corresponding to different distances between the first magnetic coupling matching component 51 and the second magnetic coupling matching component 52.
  • the ear hook 300 in the non-wearing state, can provide a preload force F0 to make the sound-emitting part 100 and the abutment part 400 abut against each other.
  • the detailed description of the preload force can be found in the above related description, which will not be repeated here.
  • the sounding part 100 in the non-wearing state, does not contact the abutting part 400. In the non-wearing state, the sounding part 100 does not contact the abutting part 400, that is, there is no pre-tightening force between the sounding part 100 and the abutting part 400 to make them abut each other.
  • the clamping force F between the sound-emitting part 100 and the abutting part 400 includes the elastic force Fk generated by the elastic deformation of the ear hook 300 and the attraction force FA between the first magnetic coupling matching part 51 and the second magnetic coupling matching part 52.
  • the clamping force F may also include the pre-tightening force F0 provided by the ear hook 300 for the abutment between the sound-emitting part 100 and the abutting part 400.
  • the clamping force F i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force and the preload force
  • the clamping force is less than the upper limit of the clamping force corresponding to the maximum auricle thickness to avoid the ear clip earphone causing discomfort to users with thick auricles.
  • the clamping force F i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force and the preload force
  • the clamping force F can be between 0.20 N and 0.70 N.
  • the clamping force i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force, and the preload
  • the clamping force can be determined to be between 0.20N and 0.70N based on the clamping force lower limit of 0.20N corresponding to the minimum auricle thickness and the clamping force upper limit of 0.70N corresponding to the maximum auricle thickness.
  • the clamping force F i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force, and the preload
  • the clamping force F can be between 0.25N and 0.65N.
  • the clamping force (i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force, and the preload) provided by the ear hook 300 can be determined to be between 0.25N and 0.65N based on the clamping force lower limit of 0.25N corresponding to the minimum auricle thickness and the clamping force upper limit of 0.65N corresponding to the maximum auricle thickness.
  • the clamping force F is limited to between 0.3N and 0.5N, that is, the difference between the clamping force received by the small-ear user and the clamping force received by the large-ear user is reduced to 0.20N at the same time.
  • the clamping force F when the distance between the shell of the sound-emitting part 100 and the abutting part 400 is between 3.8mm and 5.5mm, the change in the clamping force F does not exceed 0.20N. It can be seen from this that, as shown in Figure 27, in order to ensure that the difference between the clamping force applied to users with small ears and that applied to users with large ears is small, the clamping force can be limited to, for example, not exceeding 0.20N (i.e., the difference between F3 and F1) when the distance between the sound-emitting part 100 and the abutment part 400 varies between 3.8mm and 5.5mm based on the minimum auricle thickness Xs , the set clamping force lower limit F1, the maximum auricle thickness Xm, and the set clamping force upper limit F3.
  • 0.20N i.e., the difference between F3 and F1
  • the attraction between the first magnetic coupling matching component 51 and the second magnetic coupling matching component 52 may vary between 0.05 N and 0.10 N.
  • the clamping force F includes an elastic force Fk and an attractive force FA .
  • the initial distance between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 is X0 .
  • the elastic force Fk is equal to kX, where k is the elastic coefficient and X is the distance between the sound-emitting portion 100 and the abutting portion 400.
  • the attractive force FA can be calculated based on the formula (1) described above.
  • the elastic force Fk is between Fsk and Fmk
  • the attractive force FA is between Fma and Fsa
  • Fm Fmk + Fsa .
  • the corresponding elastic force is between 0.27 N and 0.35 N.
  • the F k increment and the FA decrement in the range of X 1 to X 2 are substantially offset or mostly offset, so that the total clamping force F remains basically stable in the range of X 1 to X 2 , so that the user experience brought by the earphone 1 to users with different auricle thicknesses remains consistent.
  • the range of X 1 to X 2 includes, for example, 3.8 mm to 5.5 mm.
  • the ear hook 300 further provides a preload force F0, and the total clamping force F can be kept within a suitable range by adjusting the magnitude of the preload force F0 and the attraction force FA .
  • the ear hook 300 can provide elastic force Fk , preload force F0 and attraction force FA at the same time, and at this time, the clamping force F of the ear hook 300 on the user with large ears has exceeded the upper limit of the preload force.
  • the preload force F0 can be reduced from F01 to F02 to make the clamping force F within the range of the minimum auricle thickness Xs and the maximum auricle thickness Xm , and the curve corresponding to the clamping force F is relatively gentle and within the appropriate clamping force range, indicating that the combination of preload force and attraction force can improve the wearing stability and comfort of the ear clip earphone and reduce the difference in clamping force between the user with large ears and the user with small ears.
  • the elastic force and the magnetic coupling force are set so that when the minimum interval between the sound-emitting part 100 and the abutting part 400 increases from 3.85 mm to 5.5 mm, the clamping force is between 25 g-f and 65 g-f, for example, 30 g-f, 40 g-f, 50 g-f, 60 g-f, etc. It should be noted that 1 g-f represents the gravity exerted on an object of 1 gram.
  • the magnetic coupling force is set so that when the minimum interval between the sound-emitting portion 100 and the abutting portion 400 increases from 3.8 mm to 5.5 mm, the change in the magnetic coupling force is greater than or equal to 20 grams of force.
  • This setting can make the change in the magnetic coupling force relatively large, and the change in the elastic force can be relatively small, so that the elastic coefficient of the ear hook 300 can be set relatively small, which is conducive to improving the stability and reliability of the earphone 1 when worn.
  • the ear hook 300 includes an elastic sheet 301, and the two ends of the elastic sheet 301 along the length direction thereof are fixed relatively to the sound-emitting portion 100 and the abutting portion 400, respectively, and the ratio of the width W31 to the thickness K31 of the elastic sheet 301 is 8 to 12, for example, 9, 10, 11, etc.
  • the width W31 of the elastic sheet 301 is between 1 and 3 mm, for example, 2 mm
  • the thickness K31 is between 0.1 and 0.3 mm, for example, 0.15 mm, 0.2 mm, 0.25 mm, etc.
  • the earphone 1 By providing an elastic sheet 301 to provide an elastic force, the earphone 1 can be clamped and worn, and by reasonably setting the ratio of width to thickness, the ear hook 300 is ensured to have sufficient strength while meeting the elastic force requirement, so that the earphone 1 has both wearing comfort and wearing stability.
  • reasonably setting the width and thickness of the elastic sheet 301 can reduce the torque on the elastic sheet 301 and prevent twisting, and also make the change of the elastic force provided more linear, effectively improving the wearing comfort.
  • the elastic sheet 301 can be, for example, a titanium sheet, the outside of which is coated with a flexible material, such as silicone, rubber, elastic resin, polyurethane material, polydimethylsiloxane, PVC, TPE and other materials, to improve wearing comfort.
  • the earphone 1 further includes a flexible printed circuit (FPC), wherein the flexible printed circuit is arranged along the length direction of the elastic sheet 301 and is disposed on the elastic sheet 301, based on which the wiring difficulty on the earphone 1 can be effectively reduced.
  • the FPC can be extended and disposed roughly along the upper surface or the lower surface of the elastic sheet 301.
  • Connector blocks 2332 can be provided at both ends of the elastic sheet 301, and the connector blocks 2332 at both ends can be respectively connected to the sound-emitting part 100 and the abutment part 400.
  • the elastic sheet 301 is provided with a notch 2330 that penetrates the side edge of the elastic sheet 301 along the width direction at a position close to the connector block 2332. The notch 2330 facilitates sealing and makes the injection molding effect better.
  • the earphone 1 has a reference cross section SF, which is arranged along the length direction of the ear hook 300, wherein the reference cross section is substantially parallel to the horizontal plane of the human body when the ear hook 300 is worn.
  • the ear hook 300, the sound emitting portion 100 and the abutting portion 400 have an inner contour, wherein the inner contour includes at least reference point C, reference point E and reference point H.
  • the reference point C is a reference point located on the inner contour of the ear hook 300 and corresponding to the edge of the helix (e.g., the topmost/outermost edge of the helix), and the reference point C may be a turning point of the inner contour, for example, the inner contour 300 is a contour line that protrudes away from the helix E17 as a whole.
  • the radius of curvature of the part of the inner contour 300 located in the vicinity of the edge of the helix first gradually increases, then gradually decreases, and then gradually increases again, starting from the reference point C toward the sounding portion 300 and the abutting portion 400.
  • the outer wall surface of the sound-emitting part 210 and the outer wall surface of 400 do not abut each other, and the outer wall surface of the sound-emitting part 100 and the outer wall surface of the abutting part 400 have a position with the shortest distance, and the midpoint of the line between the positions with the shortest distance between the two is point 0.
  • the length of the shortest line between the outer wall surface of the sound-emitting part 210 and the outer wall surface of 400 is close to 0, and the reference point O should be the midpoint of the arc formed by the abutment area where the outer wall surface of the sound-emitting part 210 abuts the outer wall surface of 400.
  • Reference point C is the reference point in the inner contour that is the farthest from point O.
  • Reference point L is the position point of the sound-emitting part 100 that is closest to reference point C.
  • Reference point K is the position point of the sound-emitting part 100 that is farthest from reference point C.
  • a line CE is formed between reference point C and reference point E, and a line CH is formed between reference point C and reference point H.
  • the length of line CE is between 16 and 19 mm
  • the length of line CH is between 6.5 and 9.0 mm
  • the angle between line CE and line CH is between 72° and 88°
  • the inner contour between reference point C and reference point E is located outside line CE
  • the inner contour between reference point C and reference point H is located outside line CH.
  • the length of the connection line CH can better ensure that the inner contour of the earphone 1 can bypass the helix as much as possible, so as to ensure that the inner contour of the earphone 1 and the abutment portion 400 do not contact the helix, thereby effectively improving the wearing comfort of the earphone 1.
  • the length of the connection line CE is set to 17.13 mm
  • the length of the connection line CH is set to 7.59 mm.
  • the arc-chord ratio of the inner contour between reference point C and reference point H specifically refers to the ratio of the actual length of the inner contour between reference point C and reference point H to the length of the connecting line CE.
  • the inner contour is a curved contour
  • the arc ratio of the inner contour between reference point C and reference point E is the ratio of the arc length of the inner contour between reference point C and reference point E to the length of the connecting line CE.
  • the inner contour between reference point C and reference point E is a continuous arc protruding away from the connecting line CE.
  • the inner contour may not be set as a curve, and it may also be a multi-segment broken line, etc.
  • the inner contour between reference point C and reference point E will be relatively straight, which is not conducive to the inner contour between reference point C and reference point E bypassing the helix. If the arc-chord ratio of the inner contour between reference point C and reference point E is too large, the inner contour between reference point C and reference point E will be too curved, affecting the overall aesthetics of the earphone 1.
  • the arc-chord ratio of the outer wall surface of the sound-emitting portion 100 is between 1.4 and 1.7. Based on this setting, the sound-emitting portion 100 is more spherical on the side facing the abutment 400. Among them, between reference point L and reference point K and on the side facing the abutment 400, the outer wall surface of the sound-emitting portion 100 is a continuous arc-shaped surface convex toward the side of the abutment 400. For example, in some embodiments, between reference point L and reference point K and on the side facing the abutment 400, the arc-chord ratio of the outer wall surface of the sound-emitting portion 100 can be set to 1.64.
  • the reference point L is a special point on the sound-emitting part 100 that is closest to the reference point C. Therefore, the angle between the line CL and the line CE determines to a certain extent whether the sound-emitting part 100 can be fully placed in the concha cavity 1, and the length of the line CL determines to a certain extent whether the inner contour of the earphone 1 can not contact the helix when the sound-emitting part 100 is fully placed in the concha cavity 1. Therefore, the length of the line CL is set between 13 and 17 mm, and the angle between the line CL and the line CE is set between 15° and 27°.
  • the sound-emitting part 100 can be fully placed in the concha cavity without contacting or squeezing the helix, thereby effectively improving the wearing comfort of the earphone 1 and the sound transmission quality of the earphone 1.
  • the length of the third line is set to 15 mm, and the angle between the line CL and the line CE is set to 21°.
  • a line CK is formed between reference point C and reference point K, line CK is located between line CE and line CH, the length of line CK is between 24 and 30 mm, and the angle between line CK and line CE is between 13° and 25°.
  • the reference point K When the earphone 1 is in the wearing state, the reference point K is closest to the ear hole. If the reference point K is too close to the ear hole, the ear hole will be blocked, affecting the user experience. If the reference point K is too far away from the ear hole, the sound transmission effect of the earphone 1 will be affected. Therefore, the length of the connection line CK is set in the range of 24 to 30 mm, and the angle between the connection line CK and the connection line CE is set in the range of 13° to 25°.
  • the area of the sound-emitting part 100 near the reference point K maintains a relatively moderate distance from the ear hole, thereby effectively preventing the sound-emitting part 100 from blocking the ear hole and effectively improving the sound transmission effect of the earphone 1.
  • the length of the connection line CK can be set to 27.7 mm, and the angle between the connection line CK and the connection line CE can be set to 20°.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Headphones And Earphones (AREA)

Abstract

本申请公开了一种耳机，耳机包括发声部、抵接部和耳挂，耳挂连接发声部和抵接部，在佩戴状态下，发声部和抵接部在使用者的耳轮两侧形成夹持状态，且发声部位于耳甲腔内，发声部包括第一壳体和发声组件，用于形成第一容置腔，发声组件设置于第一容置腔内，第一壳体上设置有出声孔，发声组件产生的声音经出声孔输出，出声孔呈条状设置，且具有沿出声孔的长度方向间隔设置的第一端和第二端，在佩戴状态下，第一端朝向耳孔设置，且第二端处的第一壳体的外壁面与耳甲腔的内壁面之间的距离小于第一端处的第一壳体的外壁面与耳甲腔的内壁面之间的距离。通过上述方式，本申请能够提升耳机的音质。

Description

一种耳机
本申请基于申请号为CN202311701969.7、申请日为2023年12月11日的中国专利申请，申请号为CN2024101723779、申请日为2024年2月6日的中国专利申请，申请号为PCT/CN2024/076495、申请日为2024年2月6日的PCT国际申请，申请号为PCT/CN2024/076377、申请日为2024年2月6日的PCT国际申请，申请号为PCT/CN2024/076378、申请日为2024年2月6日的PCT国际申请，申请号为PCT/CN2024/076388、申请日为2024年2月6日的PCT国际申请，申请号为PCT/CN2024/076389、申请日为2024年2月6日的PCT国际申请提出，并要求上述七个专利申请的优先权，该七个专利申请的全部内容通过引用并入本申请。
【技术领域】
本申请涉及电子设备技术领域，特别是涉及一种耳机。
【背景技术】
耳机已广泛地应用于人们的日常生活，其可以与手机、电脑等电子设备配合使用，以便于为用户提供声音播放功能。其中，耳夹式耳机为一种新型的耳机类型，其通常体积小巧，可夹持在佩戴者的耳轮上使用，而且该耳夹式耳机不堵塞耳道，不仅可以保证室外场景的安全性，而且相较于入耳式耳机在佩戴舒适上更好。
然而，目前的耳夹式耳机的音质难以满足需求。
【发明内容】
本申请提供了一种耳机，耳机包括发声部、抵接部和耳挂，耳挂连接发声部和抵接部，所述发声部用于将电信号转换成声信号并播放，所述抵接部内设置有电池，在佩戴状态下，发声部和抵接部在使用者的耳轮两侧形成夹持状态，且发声部位于耳甲腔内，发声部包括第一壳体和发声组件，用于形成第一容置腔，发声组件设置于第一容置腔内，第一壳体上设置有出声孔，发声组件产生的声音经出声孔输出，出声孔呈条状设置，且具有沿出声孔的长度方向间隔设置的第一端和第二端，在佩戴状态下，第一端朝向耳孔设置，且第二端处的第一壳体的外壁面与耳甲腔的内壁面之间的距离小于第一端处的第一壳体的外壁面与耳甲腔的内壁面之间的距离。
在一些实施方式，在第二端处和/或第二端远离第一端的一侧，第一壳体的外壁面与耳甲腔的内壁面彼此接触。
在一些实施方式，第一壳体的外壁面设置成使得出声孔的长边孔沿呈弧形设置，第一壳体的外壁面与耳甲腔的内壁面之间的距离在从第二端到第一端的方向上逐渐增加。
在一些实施方式，出声孔的长边孔沿的弧弦比介于1.05～1.4，或者，大于或等于1.02且小于1.05。
在一些实施方式，出声孔的宽长比介于0.15～0.30。
在一些实施方式，出声孔的长度介于9～16.5mm，或者，大于或等于5mm且小于9mm。
在一些实施方式，在将发声部和抵接部同时放置于水平参考面上时，出声孔的长边孔沿在第一端和第二端之间与水平参考面形成第一参考点，第二端位于第一参考点朝向抵接部一侧，第一端位于第一参考点背离抵接部一侧。
在一些实施方式，出声孔的长边孔在第一端和第一参考点之间的长度介于2～5.5mm，出声孔的长边孔在第二端和第一参考点之间的长度介于4.5～8mm。
在一些实施方式，出声孔的长边孔在第一端和第一参考点之间的弧弦比介于1.02～1.05，或者，大于或等于1.001且小于1.02；出声孔的长边孔在第二端和第一参考点之间的弧弦比介于1.02～1.05，或者，大于1.05且小于或等于1.07。
在一些实施方式，出声孔的长边孔沿在第一参考点处具有第一法线方向，出声孔的长边孔沿在第一端处具有第二法线方向，且出声孔的长边孔沿在第二端处具有第三法线方向，第一法线方向与第二法线方向的夹角介于30°～42°，或者，大于或等于15°且小于30°；第一法线方向与第三法线方向的夹角介于50°～60°，或者，大于或等于25°且小于50°。
在一些实施方式，出声孔具有沿其长度方向设置的中分线，出声孔与沿耳挂的长度方向设置的参考截面相交设置且中分线所在平面与参考截面的夹角介于0～45°，并且出声孔朝向耳垂方向偏置。
在一些实施方式，中分线所在平面与参考截面彼此重合；或者，出声孔相对于参考截面呈镜像对称。
在一些实施方式，在参考截面上，发声部具有最靠近抵接部的第二参考点，耳挂的内轮廓在佩戴状态下靠近耳轮边缘的区域具有最远离第二参考点的第三参考点，出声孔位于第二参考点远离第三参考点的一侧，且在发声部的外壁面上，第二端到第二参考点的距离介于2.2～4.2mm，第一端到第二参考点的距离介于9～12.4mm。
在一些实施方式，发声部还设置有泄压孔，泄压孔朝向耳轮设置，且泄压孔与参考截面相交设置或所述泄压孔相对于所述参考截面呈镜像对称。
在一些实施方式，泄压孔和出声孔由发声部与耳甲腔的接触区域彼此间隔。
在一些实施方式，泄压孔的数量为一个，且呈条形设置，参考截面沿泄压孔的宽度方向设置，且与所述泄压孔相交设置。
在一些实施方式，所述泄压孔的数量为两个，分别设置在所述参考截面的两侧，且相对于参考截面呈镜像对称，参考截面沿泄压孔的宽度方向设置。
在一些实施方式，泄压孔包括沿泄压孔的长度方向的第一孔部和第二孔部，以及连接于第一孔部和第二孔部之间的第三孔部，其中第一孔部和第二孔部的至少部分位置的宽度大于第三孔部的宽度。
在一些实施方式，发声组件设置有经第一容置空间连通泄压孔的引声孔，引声孔与泄压孔的距离不大于0.5mm，或者，大于0.5mm且小于或等于4mm。
在一些实施方式，耳机还包括麦克风，第一壳体上设置有用于将外部声音导向麦克风的入声孔，入声孔与参考截面相交设置。
在一些实施方式，发声组件包括两个喇叭，每个喇叭包括振膜，两个喇叭沿轴线方向彼此组装配合，以在两个喇叭之间形成第一声学腔，发声组件设置有连通出声孔和第一声学腔的第一引声孔，出声孔和第一引声孔沿发声组件的径向彼此连通，第一引声孔进一步呈条形设置，且出声孔和第一引声孔的长度方向沿发声组件的周向设置。
【附图说明】
图1是本申请耳机实施例佩戴在人耳的佩戴状态示意图；
图2是图1所示耳机的结构正视示意图；
图3是图1所示耳机的立体结构示意图；
图4是图1所示耳机的结构俯视示意图；
图5是图1所示耳机的发声部的立体结构示意图；
图6是图5所示发声部的结构正视示意图；
图7是图6所示发声部沿剖切线A～A的一截面结构示意图；
图8是图6所示发声部沿剖切线A～A的另一截面结构示意图；
图9是图5所示发声部的结构俯视示意图；
图10是图8所示发声部的发声组件的结构一侧视示意图；
图11是图10所示的发声组件沿剖切线P～P的截面结构示意图；
图12是图8所示的发声组件的分解示意图；
图13是图8所示发声部的另一示例性发声组件的立体结构示意图；
图14是图11所示发声组件的局部区域Q的放大示意图；
图15是图5所示发声部的结构侧视示意图；
图16是图15所示的发声部沿剖切线J～J的截面结构示意图；
图17是图16所示的发声部的发声组件的结构俯视示意图；
图18是图8所示发声部的发声组件的结构另一侧视示意图；
图19是图5所示发声部的一分解结构示意图；
图20是图5所示发声部的另一分解结构示意图；
图21是图15所示发声部沿剖切线U～U的截面结构示意图；
图22是图15所示发声部的泄压孔的另一结构示意图；
图23是图5所示发声部的又一分解结构示意图；
图24是图4所示耳机沿剖切线V～V的截面结构示意图；
图25是图24所示剖切线V～V对应的截面的一轮廓示意图；
图26是图1所示耳机具有预紧力状态下的立体结构示意图；
图27是图26所示耳机的夹紧力的变化示意图；
图28是图26所示耳机通过薄膜压力传感器测量预紧力的结构意图；
图29是图26所示耳机的夹紧力/预紧力的一测量装置的结构示意图；
图30是图26所示耳机的夹紧力/预紧力的另一测量装置的结构示意图；
图31是图1所示耳机具有磁耦匹配结构的结构示意图；
图32是图31所示耳机的夹紧力变化示意图；
图33是图31所述耳机在具有预紧力状态下的夹紧力变化示意图；
图34是图2所示耳机沿剖切线I～I的截面结构示意图；
图35是图24所示剖切线V～V对应的截面的另一轮廓示意图；
图36是图1所示耳机的另一结构示意图。
【具体实施方式】
下面通过具体实施方式结合附图对本发明作进一步详细说明。其中不同实施方式中类似元件采用了相关联的类似的元件标号。在以下的实施方式中，很多细节描述是为了使得本申请能被更好的理解。然而，本领域技术人员可以毫不费力的认识到，其中部分特征在不同情况下是可以省略的，或者可以由其他元件、材料、方法所替代。在某些情况下，本申请相关的一些操作并没有在说明书中显示或者描述，这是为了避免本申请的核心部分被过多的描述所淹没，而对于本领域技术人员而言，详细描述这些相关操作并不是必要的，他们根据说明书中的描述以及本领域的一般技术知识即可完整了解相关操作。
另外，说明书中所描述的特点、操作或者特征可以以任意适当的方式结合形成各种实施方式。同时，方法描述中的各步骤或者动作也可以按照本领域技术人员所能显而易见的方式进行顺序调换或调整。因此，说明书和附图中的各种顺序只是为了清楚描述某一个实施例，并不意味着是必须的顺序，除非另有说明其中某个顺序是必须遵循的。
本文中为部件所编序号本身，例如“第一”、“第二”等，仅用于区分所描述的对象，不具有任何顺序或技术含义。而本申请所说“连接”、“联接”，如无特别说明，均包括直接和间接连接(联接)。
如图1所示，用户的耳部EAR可以包括外耳道E11、耳甲腔E12、耳甲艇E13、三角窝E14、对耳轮E15、耳舟E16、耳轮E17及对耳屏E18等生理部位。其中，虽然外耳道101具有一定的深度并延伸至耳部EAR的鼓膜，但是为了便于描述，并结合图1所示，本申请在没有特别说明的情况下，外耳道E01具体是指其背离鼓膜的入口(也即耳孔)。进一步地，耳甲腔E12、耳甲艇E13、三角窝E14等生理部位具有一定的容积及深度；且耳甲腔E12与外耳道E11直接连通，也即可以简单地视作前述耳孔位于耳甲腔E12的底部。
进一步地，耳部EAR的外耳道外围还有耳屏E19，其中相较于耳甲腔E12、耳甲艇E13和三角窝E14等部位在三维空间中具有一定的深度及容积，也即这些部位分别沿靠近用户的头部的方向朝耳部EAR的后侧凹陷，耳屏E19则沿背离用户的头部的方向朝耳部EAR的前侧凸起。其中，“耳部EAR的前侧”是一个相对于“耳部EAR的后侧”的概念，前者指耳部EAR背离头部的一侧，例如图1，后者指耳部EAR朝向头部的一侧，他们均是针对用户的耳部EAR。
进一步地，不同的用户可能存在个体差异，导致耳部EAR存在不同的形状、大小等尺寸差异。为了便于描述，以及减小(甚至是消除)不同用户的个体差异，基于ANSI:S3.36,S3.25和IEC:603187标准可以制得一含头部及其(左、右)耳部EAR的模拟器，例如GRAS45BCKEMAR。因此，诸如“用户佩戴耳机”、“耳机处于佩戴状态”及“在佩戴状态下”等描述可以指本申请所述的耳机佩戴于前述模拟器的耳部EAR。当然，正是因为不同的用户存在个体差异，耳机被不同的用户佩戴时可能会与耳机佩戴于前述模拟器的耳部EAR存在一定的差异，但是这种差异应该是被容忍的。
本申请实施例描述耳机1的至少一种示例性结构。如图1所示，图1示出了耳机1佩戴在用户耳部EAR上的状态。耳机1可以是耳夹式耳机。如图1至4所示，耳机1包括用于插入用户(使用者)的耳甲腔E12的发声部100、用于抵接用户的耳后的抵接部400和连接于发声部100和抵接部400的耳挂300。耳挂200可以绕过用户的耳轮17，发声部100和抵接部400在使用者的耳轮两侧形成夹持状态。该发声部100为声音播放装置，其用于将电信号转换成声信号，并播放给佩戴者。该抵接部400与发声部100形成夹持状态，以便将整个耳机1夹持佩戴在使用者的耳轮上。一些实施例中，该抵接部400内可以设置有电池、电路板等器件。当然，该抵接部400也可不设置电池使用，而将电池安装到发声部100中。
在一些实施例中，如图5和图6所示，发声部100可以设置有出声孔111和泄压孔112。出声孔111可以位于发声部100的底部，泄压孔112可以位于发声部100靠近耳挂300的一侧。如图7所示，发声部100包括第一壳体10和发声组件20。第一壳体10用于形成第一容置腔110，发声组件20设置于第一容置腔110内。
如图7所示，发声组件20包括两个喇叭21。每个喇叭21包括振膜22。两个喇叭21沿轴线方向(也即轴线Z的方向)彼此组装配合，以在两个喇叭21之间形成第一声学腔201。发声组件20与第一壳体10彼此配合，以在发声组件20与第一壳体10之间形成与第一声学腔201彼此隔离的第二声学腔202，第一壳体10设置有与第一声学腔201连通的出声孔111以及与第二声学腔202连通的泄压孔112，两个喇叭21的振膜22一侧产生的声音经第一声学腔201和出声孔111输出，两个喇叭21的振膜22另一侧产生的声音经第二声学腔202和泄压孔112输出。其中，轴线方向可以为发声组件20的中心轴线Z所指的方向，中心轴线Z例如可以经过发声组件20的几何中心和两个喇叭21的振膜22的几何中心，中心轴线Z也可以为两个喇叭21的磁路的中心轴线。
对于用于产生声音的喇叭21，声压级是衡量其性能的一个重要参数，声压级通常用来比较不同声音源发出的声压水平，用于量化和比较声音的强度。声压级是用于描述声音大小的量度，它代表了声压的有效值与其基准值之间的比值的对数，具体公式如下：
其中，SPL为声压级，P为喇叭21工作时产生的声压，Pref为参考声压。当发声组件20仅设置有单个喇叭21时，其工作时产生的声压为P，而相同条件下在发声组件20内设置两个喇叭21时，其工作时产生的声压为2P，则根据上述公式，计算可得单个喇叭21与两个喇叭21之间的声压级之差如下：
由上述推导可知，相对于仅设置一个喇叭21，通过在发声组件20内沿轴线方向(即轴线Z的方向)组装配合并且在两个喇叭之间形成第一声学腔201来出声，可以有效提升发声组件20的声压级，进而实现更好的音量效果，使得用户可以听到更加清晰的声音，有效提升耳机1的音质。
此外，通过两个喇叭21组装配合，两个喇叭21的振膜22之间可以彼此相对以形成第一声学腔201，第一声学腔201为振膜22振动以推动空气产生供用户聆听的声波的场所，第二声学腔202与泄压孔112连通进而连通外界，用于平衡第一壳体10内部的气压。两个喇叭21组装配合即可形成第一声学腔201，两个喇叭21装配好后整体装配在第一壳体10内，能够简化结构且装配简单。而且通过利用发声组件20与第一壳体10之间形成与第一声学腔201彼此隔离的第二声学腔202，无需通过额外的结构或者器件来形成第二声学腔202，也能够简化结构，降低耳机1的装配难度，提升耳机1的装配效率。
可选地，发声组件20的两个喇叭21的声学特性相同，且沿轴线方向(也即轴线Z的方向)同轴设置。其中，两个喇叭21的声学特性相同表示在相同的驱动信号的驱动下，两个喇叭21所产生的声压相同或接近，具体为二者的声压差值与最小声压的比值不大于10％。通过设置声学特性相同的两个喇叭21，且使二者沿轴线方向(即轴线Z的方向)同轴设置，有利于提升发声组件20的音质。
可选地，如图7所示，发声组件20还包括安装支架27，安装支架27呈环形设置，两个喇叭21分别与安装支架27的两端组装配合，以形成第一声学腔201，安装支架27上设置有连通出声孔111和第一声学腔201的第一引声孔203。
通过设置环形的安装支架27，在实现两个喇叭21的组装配合的同时形成第一声学腔201，且在安装支架27上设置第一引声孔203，以实现出声孔111与第一声学腔201的连通，从而实现将第一声学腔201内的声波依次经第一引声孔203和出声孔111传递至用户的耳部EAR，有效简化结构，有效提升发声组件20的结构紧凑性和集成性，有利于减低装配难度，有利于提升装配效率。
可选地，在一些实施例中，如图7所示，两个喇叭21分别包括音圈23、磁路系统24以及盆架25，盆架25用于支撑振膜22和磁路系统24，音圈23与振膜22连接，并设置于磁路系统24所形成的磁场内，两个喇叭21的盆架25分别与安装支架27组装配合，使得两个喇叭21的振膜22和安装支架27之间形成第一声学腔201。其中，音圈23可以为筒状，音圈23的轴线可以为发声组件20的中心轴线Z，音圈23受磁路系统24所形成的磁场的作用在轴线方向(即轴线Z的方向)上运动，以带动振膜22振动产生声波。
通过将两个喇叭21的盆架25与安装支架27组装配合以实现发声组件20的装配，且将盆架25设置成支撑振膜22和磁路系统24，结构简单且紧凑，有效降低装配难度，有效提升装配效率。
图7示出的是两个喇叭21的盆架25和安装支架27组装配合。可选地，在一些实施例中，也可以取消安装支架27，两个喇叭21的盆架25彼此可以组装配合，以形成第一声学腔201。在此情况下，两个喇叭21中的至少一者上的盆架25上设置有连通出声孔111和第一声学腔201的第一引声孔203。例如，两个盆架25均可以设置有出声孔111，或者各自设置有出声孔111的一部分，在装配好后形成完整的出声孔111。通过两个盆架25之间的组装配合实现两个喇叭21的组装配合以及形成第一声学腔201，无需额外设置连接的部件，在简化结构的同时降低生产成本，有利于降低装配难度和提升装配效率。
可选地，如图7所示，两个喇叭21的振膜22背离各自磁路系统24的一侧彼此相邻设置，第一声学腔201形成于两个喇叭21的振膜22之间。
两个喇叭21的振膜22受各自音圈23的带动而振动，以在背离各自磁路系统24的一侧产生供用户聆听的声波，通过将两个喇叭21的振膜22背离各自磁路系统24的一侧彼此相邻设置，使两个喇叭21均在第一声学腔201内产生声波，在有效简化发声组件20的结构的同时，便于减小第一声学腔201的体积，使得发声组件20的结构更加紧凑，有利于降低耳机1的体积，提升耳机1的佩戴舒适度。此外，两个喇叭21共用第一声学腔201还可以使得第一声学腔201的谐振峰向高频移动，利于提升耳机1的音质。
如图7所示，两个喇叭21的盆架25上分别设置有第二引声孔204，第二引声孔204连通对应的振膜22朝向各自磁路系统24的一侧与第二声学腔202。
两个喇叭21的振膜22朝向各自磁路系统24的一侧通过第二引声孔204连通第二声学腔202，进而通过泄压孔112连通外界，以平衡第一壳体10内部的气压，在保障音质的同时有利于简化发声组件20的结构，便于装配。
可选地，在一些实施例中，如图7所示，两个喇叭21的振膜22朝向各自磁路系统24的一侧共用第二声学腔202和泄压孔112。如此设置可以减小泄压孔112的数量，提升耳机1的美观度，且有利于保障两个喇叭21声学特性的一致性，有利于提升发声组件20的音质。此外，两个喇叭21共用第二声学腔202也便于密封，且能够减小第一壳体10的体积，使耳机1的结构更加紧凑，有效减小耳机1的体积，有利于提升耳机1的佩戴舒适度。
可选地，在另一些实施例中，如图8所示，第二声学腔202包括彼此隔离的两个子声学腔202a，第一壳体10设置有分别与每个子声学腔202a连通的泄压孔112，两个喇叭21的振膜22朝向各自磁路系统24的一侧分别连通对应的子声学腔202a和泄压孔112。通过将两个子声学腔202a进行隔离，可以使得两个喇叭21的声音信号能够不完全一致，即使得耳机1具备一定的分频功能，以适应不同的聆听环境和音质需求，且隔离的两个子声学腔202a可以减少两个喇叭21之间的互相干扰，从而提升两个喇叭21工作的有效性和可靠性，有利于提升耳机1的音质。
可选地，如图9和图10所示，出声孔111和第一引声孔203沿发声组件20的径向RD彼此连通，出声孔111和第一引声孔203分别呈条形设置，且出声孔111和第一引声孔203的长度方向沿发声组件20的周向设置。其中，发声组件20的径向RD为垂直于轴线方向(即轴线Z的方向)的方向，发声组件20的周向为环绕轴线方向(即轴线Z的方向)的方向。
通过将出声孔111和第一引声孔203设置成条形，并使出声孔111和第一引声孔203的长度方向沿发声组件20的周向设置，在保障出声孔111和第一引声孔203的面积的同时，降低出声孔111和第一引声孔203的在轴线方向(即轴线Z的方向)上的长度，提升发声组件20的结构紧凑性，降低耳机1的体积，提升耳机1的佩戴舒适度。
本申请中涉及某个物理/数学量(如距离、比值、面积、长度、宽度、厚度等等)介于某个数值范围之间的描述，均可以包括数值范围的端点值。比如，某距离介于A～B之间，该距离的取值可以为A，也可以为B，还可以是A和B之间的某个值。因此，后文内容涉及“介于”数值范围的描述均按照上述的表述进行理解和适用。
可选地，如图11所示，两个喇叭21的振膜22的安装边缘沿轴线方向(即轴线Z的方向)的间隔距离Z22介于1.6～2.5mm，例如可以为1.7mm、1.9mm、2.1mm、2.3mm等，当然还可以为其他数值，振膜22的安装边缘即为安装在盆架25上的边缘。第一声学腔201的径向尺寸R21介于7.5～9.5mm，例如可以为7.8mm、8.1mm、8.5mm、8.8mm、9.1mm等，当然还可以为其他数值。可选地，出声孔111和第一引声孔203的面积分别可以介于5～18mm2。可选地，出声孔111和第一引声孔203的面积可以介于9～20mm2。例如可以出声孔111和第一引声孔203的面积可以分别为6mm2、8mm2、9mm2、10mm2、12mm2、14mm2、17mm2、19mm2等，当然还可以为其他数值。通过合理地设置上述尺寸，可以在提升发声组件20的结构紧凑度的同时，使得第一声学腔201的谐振峰向高频移动，有利于提升耳机1的音质。
可选地，如图11所示，磁路系统24背离各自振膜22的一端突出于盆架25设置，且磁路系统24相对于盆架25的突出部分的径向尺寸R22小于盆架25对振膜22的支撑位置的径向尺寸R23。如此设置可以使得发声组件20的外轮廓更加接近于球形，便于提升结构紧凑性和集成性，有效减小发声组件20的体积。而第一容置腔110为配合耳机1的外观可以设置成近似于球形，从而如此设置发声组件20便于发声组件20装配至第一容置腔110内，有效提高第一容置腔110的空间利用率，有效提高耳机1的装配效率。此外，通过将发声组件20的外轮廓设置成更加接近于球形，从而更适配于耳甲腔E12的形状，进而可以充分利用耳甲腔E12内的空间，有效提升耳甲腔E12内的空间利用率。
可选地，如图11所示，发声组件20的轴向尺寸Z21与盆架25对振膜22的支撑位置的径向尺寸R23的比值介于0.8～1.3之间，例如该比值可以为0.9、1、1.1等。可选地，发声组件20的最大轴向尺寸Z21和最大径向尺寸R20的比值介于0.8～1.3mm之间，该比值可以为0.9、1、1.1等。如此，发声组件20的轴向尺寸Z21和盆架25对振膜22的支撑位置的径向尺寸R23十分接近，使得发声组件20的外轮廓更接近于球形，便于更好地与近似于球形的第一容置腔110相配合，有效提升第一容置腔110的空间利用率，有效降低装配难度和提升装配效率。例如，发声组件20的轴向尺寸Z21为9.5mm，盆架25对振膜22的支撑位置的径向尺寸R23为8.1mm，则二者之间的比值约为1.17。又例如，发声组件20的轴向尺寸Z21为9.5mm，盆架25对振膜22的支撑位置的径向尺寸R23为8.8mm，则二者之间的比值约为1.08。
可选地，在一些实施例中，如图11和图12所示，发声组件20设置有安装凸台271，第一引声孔203设置于安装凸台271上，安装凸台271在出声孔111的外围与第一壳体10抵接(如图7所示)，以使得第一引声孔203和出声孔111与第二声学腔202彼此隔离。当然，在另一些实施例中，安装凸台271也设置在第一壳体10，而不设置发声组件20上。具体地，第一壳体10设置有安装凸台271，出声孔111设置于安装凸台271上，安装凸台271在第一引声孔203的外围与发声组件20抵接，以使得第一引声孔203和出声孔111与第二声学腔202彼此隔离。
通过设置安装凸台271，在实现第一壳体10和发声组件20的连接的同时将第一引声孔203和出声孔111与第二声学腔202隔离开，简化结构的同时提高隔离效果，避免第一引声孔203和出声孔111输出声音受第二声学腔202经泄压孔112泄压的影响，提升耳机1的音质。
可选地，如图11和图12所示，发声组件20还包括安装支架27，安装凸台271位于安装支架27上。安装支架27还包括沿发声组件20的周向与安装凸台271连接且呈环缺状设置的支架主体272。支架主体272上设置有沿轴线方向(即轴线Z的方向)彼此相背的两个第一支撑台面2701。两个盆架25靠近各自振膜22一侧的外端面250分别支撑于对应的第一支撑台面2701上，安装凸台271分别沿轴线方向(即轴线Z的方向)和发声组件20的径向RD突出于支架主体272，并设置于两个盆架25的外周面的外侧。如此设置，可以在保障安装凸台271的结构强度的同时，为安装凸台271预留足够的空间以设置第一引声孔203，且两个盆架25分别支撑于对应的第一支撑台面2701上可以提升结构的稳定性，从而有效提升发声组件20整体结构的稳定性和可靠性。
可选地，如图10和图12所示，安装支架27可以为塑胶成型件，安装凸台271的径向厚度R24介于0.2～0.7mm之间。可选地，安装凸台271的径向厚度R24可以为0.3mm、0.4mm、0.5mm、0.6mm等，当然，还可以为其他数值。安装凸台271包括沿第一引声孔203的宽度方向设置且连接第一引声孔203的长边孔沿111c的连接桥2723，第一引声孔203由连接桥2723分隔成沿第一引声孔203的长度方向彼此间隔的至少两个第一子引声孔。安装支架27例如可以为注塑成型、压塑成型等等，当然还可以为其他成型方式制成。当然，在另一些实施例中，如图13所示，安装凸台271也可以不设置连接桥2723，如此能够获得面积更大第一引声孔203。相对于图12示出的示例而言，图13的第一引声孔203的圆周尺寸可以适当地缩小保持结构强度，但由于取消了连接桥2723，所以第一引声孔203的面积仍然可以提到提升，进而能够提高音质。
通过合理地设置安装凸台271的径向厚度R24，在保障第一引声孔203的空间的同时不过度增加发声组件20的径向尺寸R20，从而实现耳机1整体的小巧化。连接桥2723的设置便于安装支架27的成型，并有效提高安装凸台271的连接强度，从而有效提高发声组件20工作的有效性和可靠性。
可选地，在一些实施例中，如图11和12所示，支架主体272包括支撑部2721和限位部2722，限位部2722与支撑部2721连接，第一支撑台面2701设置于支撑部2721上，限位部2722沿轴线方向(即轴线Z的方向)突出于第一支撑台面2701，并嵌入于盆架25内，以沿发声组件20的径向RD对盆架25进行限位。
当然，在另一些实施例中，支架主体272可以设置有凹陷部(图未示)。换个角度而言，限位部2722并不是凸出设置的，而是凹陷设置的，进而形成凹陷部，盆架25的部分嵌入于凹陷部内，以沿发声组件20的径向RD对盆架25进行限位。
通过设置限位部2722或者凹陷部以对盆架25在发声组件20的径向RD上进行限位，结构简单且稳定，便于装配和拆卸，在有效提升发声组件20的结构稳定性的同时提升装配效率。
可选地，如图11和图12所示，两个盆架25的外端面250与第一支撑台面2701之间以及安装凸台271的内周面与两个盆架25的外周面之间分别设置有密封胶28。通过在上述位置设置密封胶28可以有效提高第一声学腔201的隔离效果，从而提升耳机1的音质，且密封胶28的弹性较好，在进行安装凸台271与第一壳体10之间的装配连接时密封胶28可以发生一定的弹性形变以使其更加贴合，从而提升安装凸台271与第一壳体10之间连接的稳定性和密封性，有利于提升耳机1的音质。
可选地，如图11和图14所示，盆架25在靠近限位部2722的外周面与第一支撑台面2701的连接位置的角落设置有第一切角251，以形成第一容胶槽252。支撑部2721在靠近盆架25的外端面250和盆架25的外周面的连接位置的角落设置有第二切角2702，以形成第二容胶槽2703。
通过设置第一切角251和第二切角2702，以形成第一容胶槽252和第二容胶槽2703，从而有效提高密封胶28的容纳量，在提升密封效果和隔离效果的同时有效减少胶水外溢，从而有效降低对其他部件造成干涉的可能性，有利于降低装配难度。
可选地，如图11所示，安装凸台271在靠近两个盆架25的外周面的角落设置有第三切角2704，以形成第三容胶槽2705。第三切角2704的设置可以进一步提高容胶量和第一声学腔201的隔离效果。可选地，第二切角2702和第三切角2704彼此连接，从而第二切角2702形成的第二容胶槽2703和第三切角2704形成的第三容胶槽2705可以相互连通，进而在进行涂胶时可以连续涂布，有效简化工艺，提升装配效率。
可选地，如图11和图14所示，盆架25还设置有第二支撑台面253，第二支撑台面253沿发声组件20的径向RD位于盆架25的外端面250的内侧，且沿轴线方向(即轴线Z的方向)与盆架25的外端面250彼此间隔，振膜22的安装边缘支撑于第二支撑台面253上，限位部2722沿轴线方向(即轴线Z的方向)的投影至少部分落在第二支撑台面253上。
通过设置第二支撑台面253以支撑振膜22，且第二支撑台面253沿发声组件20的径向RD位于盆架25的外端面250的内侧，有利于提升振膜22的连接稳定性，从而提升振膜22工作的可靠性。并将限位部2722设置成沿轴线方向(即轴线Z的方向)的投影至少部分落在第二支撑台面253上，实现空间的合理利用，提高空间的利用率，在保障连接稳定性的同时有利于提高第一声学腔201在发声组件20的径向RD上的尺寸，从而有利于提升耳机1的音质。
可选地，如图15至图17所示，第二引声孔204的数量为多个且沿发声组件20的周向间隔设置，盆架25上设置有位于两个第二引声孔204之间的焊盘26。其中部分第二引声孔204到泄压孔112的距离小于焊盘26到泄压孔112的距离。焊盘26用于接受电信号，以使喇叭21进行相应的工作。通过沿发声组件20的周向设置多个第二引声孔204，可以缩短经泄压孔112输出的声音的声学路径，有利于提高第二声学腔202体积的利用率，有利于提升泄压效率有利于耳机1的音质。图15所示的剖切线U～U对应的截面为参考截面SF。
可选地，上述部分第二引声孔204到泄压孔112的距离不大于0.5mm。进一步可选地，该距离不大于0.3mm。若第二引声孔204到泄压孔112的距离过大，则会导致泄压性能的降低，从而对耳机1的音质造成影响。通过合理地设置部分第二引声孔204到泄压孔112的距离，有效提升泄压效率，有利于提升耳机1的音质。
可选地，如图16所示，与泄压孔112最相邻的第二引声孔204与焊盘26沿发声组件20的径向RD相对设置，如此设置可以使得焊盘26的工作与耳机1的泄压工作之间互不干扰，有利于提升耳机1的泄压性能，有利于提升耳机1的音质。
如图16和图17所示，具体地，两个盆架25上分别设置有沿发声组件20的周向彼此间隔设置的焊盘26和第二引声孔204。如图12和图18所示，每个盆架25和安装支架27设置有彼此配合的限位结构200a、200b，限位结构200a、200b用于沿发声组件20的周向对盆架25和安装支架27进行限位，两个盆架25的限位结构200a、200b沿轴线方向(即轴线Z的方向)相对设置。可选地，如图17和图18所示，发声组件20具有沿轴线方向(即轴线Z的方向)设置且经过限位结构200a、200b的径向平面RF，每个盆架25上的焊盘26相对于径向平面RF呈镜像设置，以及每个盆架25上的引声孔分别相对于径向平面RF呈镜像对称。
通过限位结构200a、200b以实现两个盆架25沿发声组件20的周向的限位，避免两个喇叭21发生相对转动，有效提高发声组件20的结构稳定性和可靠性。与此同时，通过将每个盆架25上的焊盘26和第二引声孔204分别相对于径向平面RF呈镜像设置，以使得两个盆架25上的焊盘26和第二引声孔204的指向性一致，从而提高两个喇叭21在第一容置腔110内的声学特性的一致性，有利于提高耳机1的音质。此外，通过将两个盆架25的结构设计成高一致性，使得两个喇叭21能够复用同一个盆架25设计，有效降低物料成本和生产成本。
可选地，限位结构200a、200b的数量仅为一组，如此设置在使得盆架25相对于径向平面RF呈镜像对称的同时，两个盆架25在安装时设置有限位结构200a的一侧相对安装，则每个盆架25上的焊盘26也随之相对设置并位于发声组件20的同一侧，进一步使得两个喇叭21上的焊盘26的指向性一致，从而提高两个喇叭21在第一容置腔110内的声学特性的一致性，有利于提高耳机1的音质。
可选地，结合图7、图19和图20，第一壳体10可以包括第一硬质壳体11和第二硬质壳体12，第一硬质壳体11与耳挂300连接，第一硬质壳体11和第二硬质壳体12围合形成第一容置腔110，出声孔111设置于第二硬质壳体12上。
通过将第一硬质壳体11设置成与耳挂300连接，而将出声孔111设置于第二硬质壳体12上，从而有效保障出声孔111的完整性，降低出声孔111受干扰的可能性，从而提高出声孔111工作的稳定性和可靠性，并能够降低第一硬质壳体11和第二硬质壳体12的对齐难度，从而降低发声组件20的装配难度，提升发声组件20的装配效率。且如此设置出声孔111不需要同时穿透第一硬质壳体11和第二硬质壳体12，可避免出声孔111表面不平整，进而影响调声网和钢网的安装。
可选地，如图19和图20所示，第二硬质壳体12上设置有相对于第二硬质壳体12的端面122突出的凸块123，第一硬质壳体11上设置有相对于第一硬质壳体11的端面114凹陷的凹槽113，凸块123嵌入于凹槽113，出声孔111部分设置于凸块123上。通过设置凸块123和凹槽113以实现第一硬质壳体11和第二硬质壳体12之间的连接，并将出声孔111部分设置于凸块123上，在保障第一硬质壳体11和第二硬质壳体12之间的连接稳定性和同时，使得出声孔111具有足够的长度，有利于提升耳机1的出音效果，有利于提升耳机1的音质。
可选地，如图19和图20所示，安装凸台271位于发声组件20上。当然，安装凸台271也可以位于第二硬质壳体12上。第一硬质壳体11内设置有第三支撑台面115，第三支撑台面115用于支撑发声组件20，以在第一硬质壳体11和第二硬质壳体12彼此固定时，发声组件20和第二硬质壳体12通过安装凸台271彼此抵接。如此设置能够简化结构和简化装配工艺，降低装配难度，提升装配效率。
可选地，如图7所示，在发声组件20和第二硬质壳体12通过安装凸台271形成抵接时，第一硬质壳体11的端面114和第二硬质壳体12的端面122沿发声组件20和第二硬质壳体12的抵接方向可以保持一定间隙。如此设置可以使得当通过第一硬质壳体11和第二硬质壳体12抵接发声组件20以将其定位安装时，第一硬质壳体11和第二硬质壳体12之间保持一定间隙以抵消发声组件20的装配误差，从而有效提升发声组件20定位安装的准确性和稳定性。且在生产装配过程中，安装凸台271先抵接于发声组件20和第二硬质壳体12，再将第一硬质壳体11与第二硬质壳体12扣合，从而挤压发声组件20和第二硬质壳体12以实现进一步地固定，有效提升抵接效果，提升耳机1的连接稳定性。
可选地，轴线方向(即轴线Z的方向)可以垂直于发声组件20和第二硬质壳体12的抵接方向。可选地，磁路系统24包括突出于盆架25设置的导磁罩241以及设置于导磁罩241内的磁体242。如图7和图19所示，第三支撑台面115设置成分别支撑两个喇叭21的导磁罩241。如此设置以在实现发声组件20的安装固定的同时不影响振膜22的振动，且结构稳定，有利于提升耳机1的使用寿命。
可选地，如图9和图15所示，出声孔111和泄压孔112分别相对于沿耳挂300的长度方向设置的对称面SF呈镜像对称设置。
通过设置分别相对于对称面SF呈镜像对称设置的出声孔111和泄压孔112，在提高耳机1美观度的同时使得耳机1可以同时适用于左耳和右耳，从而有效提升耳机1的适配性。
可选地，如图4所示，耳机1还包括麦克风30，第一壳体10上设置有用于将外部声音导向麦克风30的入声孔101，入声孔101与对称面SF相交设置。麦克风30可用于收集声音，使得耳机1可以适应播放音乐和通话等不同的使用场景，且将入声孔101设置成与对称面SF相交设置，在保障麦克风30经入声孔101收集声音的有效性的同时，使得耳机1可以同时适应左耳和右耳的使用，有效提升耳机1的适配性。图4中的剖切线V～V对应截面为对称面SF。
可选地，麦克风30的数量可以设置为一个或多个，例如可以为1个、2个、4个等等，当麦克风30的数量为一个时，麦克风30与对称面SF相交设置，当麦克风30的数量为多个时，多个麦克风30相对于对称面SF呈对称分布。如此设置，可以进一步使得耳机1可以同时适应左耳和右耳的使用，有效提升耳机1的适配性。
可选地，如图21所示，图21是发声部100以对称面SF为截面的截面结构示意图。出声孔111与泄压孔112的最小间隔距离D10介于6.5～10mm。可选地，该最小间隔距离D10不小于7mm。图21是以对称面SF为截面。声短路指的是当喇叭21的振膜22向前或向后运动时，产生的声波是反相的，导致这些声波之间互相抵消，从而使得声音变轻或者听起来不自然。若上述间隔距离D10太短则可能会发生声短路，通过合理设置出声孔111和泄压孔112之间的间隔距离D10，能够有效降低声短路的可能性，有利于提升耳机1的音质。
可选地，如图1和图17所示，泄压孔112朝向耳轮设置，出声孔111与泄压孔112由第一壳体10与耳部EAR的接触区域彼此间隔。该接触区域可以为第一壳体10与对耳轮或耳甲腔的接触区域，通过第一壳体10与接触区域将出声孔111和泄压孔112间隔开来，能够有效减小出声孔111和泄压孔112之间的干涉，从而有效提升耳机1工作的可靠性，有利于提升耳机1的音质，且同时适用于用户的左耳和右耳，适配性高。
可选地，如图9和图21所示，出声孔111的数量为一个，且呈条形设置，对称面沿出声孔111的长度方向设置，且与轴线方向(即轴线Z的方向)垂直。如此设置，当耳机1被用户佩戴时，由于第一壳体10和用户耳部EAR的耳甲腔之间并非完全贴合，而是存在一段由第一壳体10与耳部EAR的接触区域向耳道口逐渐增大的空间，则由出声孔111输出的声音会在耳甲腔内形成反射而得到增强，以利用反射效果提高耳道口的声压，以使得用户能够聆听到强度更大的声音。
可选地，如图15和图21所示，泄压孔112的数量为一个，且呈条形设置，对称面SF沿泄压孔112的宽度方向设置且与轴线方向(即轴线Z的方向)垂直。如此设置以使得泄压孔112与出声孔111尽量远离，有效降低声短路的可能性，有利于提升耳机1的音质。
可选地，如图22所示，泄压孔112包括沿泄压孔112的长度方向的第一孔部1121和第二孔部1122，以及连接于第一孔部1121和第二孔部1122之间的第三孔部1123，其中第一孔部1121的至少部分宽度W1和第二孔部1122的至少部分位置的宽度大于第三孔部1123的宽度W3。第一孔部1121、第二孔部1122、第三孔部1123的宽度是指在垂直于泄压孔112的长度方向的宽度方向上的尺寸。如此设置在增加泄压孔112的面积的同时，能够有效降低泄压孔112被耳轮或者其他耳部EAR位置遮挡的可能性，有利于提升泄压效果，进而有利于提升耳机1的音质。而且如此设置，在保持泄压效果的同时，泄压孔112整体无需按照最大宽度设置，使得尺寸较为适中，也便于提升耳机1的美观度。
可选地，对称面SF为耳挂300的对称面。具体地，耳挂300的对称面是指沿耳挂300的长度方向设置的，且对称面两侧的耳挂300部分差异最小或者一致，即如果耳挂300是规则对称的，那么对称面两侧的耳挂300部分一致，如果耳挂300不是严格对称的，那么对称面SF两侧的耳挂300差异应该是各种划分方式里最小的，例如可以在垂直于对称面的平面上观察耳挂300的投影来区分差异的大小。
可选地，如图19、20以及图23所示，第一壳体10还可以包括第一柔性体13。第一硬质壳体11和第二硬质壳体12围合形成第一容置腔110，而第一柔性体13设置于第二硬质壳体12的外壁上，并用于接触耳甲腔，第一柔性体13的端面的最外侧环线所在平面为第一参考平面S13，发声组件20沿轴线Z的中点或发声组件20的轴线Z位于第一参考平面S13朝向第一硬质壳体11一侧，并与第一参考平面S13平行。
该硬质材料可采用塑料、金属或其他能够被用作耳机1壳体的支撑材料，以对第一壳体10的内部结构，如发声组件20，提供更好的支撑性和稳固性。第一柔性体13覆盖在第二硬质壳体12的外壁上，该第一柔性体13可采用硅胶或其他亲肤性的柔性材料，以提高发声部100与佩戴者接触时的舒适性。通常在佩戴时，第二硬质壳体12会朝向佩戴者的耳甲腔，且会与佩戴者接触，通过将第一柔性体13覆盖在第二硬质壳体12的外壁上，以提高耳机1佩戴的舒适性。此外，将发声组件20沿轴线Z的中点或发声组件20的轴线Z位于第一参考平面S13朝向第一硬质壳体11一侧，可以使整个发声组件20的中心更靠近第一硬质壳体11，即当在第二硬质壳体12的外壁上设置第一柔性体14时，第一壳体10的形心与发声组件20的形心并不重合，发声组件20的形心相对于第一壳体10的形心更偏向第一硬质壳体11，从而实现发声组件20的偏心设置，从而更多地利用第一硬质壳体11内部的空间，有利于提高空间利用率。
可选地，发声组件20沿轴线Z的中点或轴线Z到第一参考平面S13的距离D13介于0.4～4mm。如此设置发声组件20在第一壳体10中的位置，可使得发声组件20更多体积偏向于第一硬质壳体11分布，从而充分利用第一硬质壳体11相对较为充裕的内部空间，使得第一壳体10可以容纳体积更大的发声单元。
可选地，发声部100设置成在耳甲腔内保持耳孔的至少部分开放，降低因对耳孔造成封堵而影响声音传输至用户耳道内的可能性，并有利于声音在用户耳甲腔内形成反射，以增大听音音量。
在一些实施例中，可选地，如图11所示，发声组件20的最大轴向尺寸Z21与最大径向尺寸R20的比值介于0.8～1.3。可选地，该比值可以为0.9、1、1.1、1.2等。如此，发声组件20的最大轴向尺寸Z21和最大径向尺寸R20十分接近，使得发声组件20的外轮廓更接近于球形，有效提高发声组件20的结构紧凑性和集成性，有效降低装配难度和提升装配效率。
可选地，发声组件20的最大径向尺寸R20设置为安装支架27或者盆架25的最大径向尺寸，从而使得在装配时由安装支架27或者盆架25作为主要受力部件，有效对振膜22和音圈23进行保护，有效提升发声组件20工作的可靠性和有效性。可选地，发声组件20的最大轴向尺寸设置为两个喇叭21的导磁罩241之间沿轴线方向(即轴线Z的方向)的最大轴向尺寸。
可选地，在一些实施例中，两个喇叭21的振膜22的谐振峰频率介于200～300Hz，且两个喇叭21的振膜22的谐振峰频率的绝对差值小于或等于50Hz。其中，该谐振峰可以为从低频到高频扫频过程中出现的第一个谐振峰。具体地，谐振峰频率是指对发声部100内，例如喇叭21、第一壳体10及第一壳体10内部腔体等组成的结构进行电声扫频测试时，频率从低到高顺序出现的第一个谐振峰的频率，该谐振峰出现的位置对应于发声部100的阻抗曲线骤增的位置。
通过设置合理范围的谐振峰频率的喇叭21，使得喇叭21播放的音域类型以及范围较广，不仅在人声，还可以在音乐播放等方面具有更好的音质，而且两个喇叭21的谐振峰频率的绝对差值小于或等于50Hz，使得两个喇叭21的一致性较高，耳机1进一步提升耳机1的音质。
在一些实施例中，如图21所示，出声孔111呈条状设置，且具有沿出声孔111的长度方向间隔设置的第一端111a和第二端111b，在佩戴状态下，第一端111a朝向耳孔E11设置，且第二端111b处的第一壳体10的外壁面与耳甲腔E12的内壁面之间的距离D10小于第一端111a处的第一壳体10的外壁面与耳甲腔E12的内壁面之间的距离D10。
通过将第一壳体10设置成出声孔111的第一端111a朝向耳孔设置，以使得声波可以经出声孔111尽可能多的进入耳孔内，并有效缩短声波的传输路径，有效提升用户所听到的声音的音量效果，有利于提升耳机1的音质。此外，通过将第二端111b处的第一壳体10的外壁面与耳甲腔E12的内壁面之间的距离D10设置成小于第一端111a处的第一壳体10的外壁面与耳甲腔E12的内壁面之间的距离D10，可使得喇叭21外圈切割第一壳体10形成的曲线与耳甲腔可形成一类楔形空间，沿着所述曲线设置出声孔111时，可使得出声孔111与耳甲腔之间形成一号筒结构，利用耳甲腔E12作为反射壁面可形成声波反射增强，从而有效提高耳孔处的声压，有效增大听音音量。
可选地，如图21所示，在第二端111b处和/或第二端111b远离第一端111a的一侧，第一壳体10的外壁面与耳甲腔的内壁面彼此接触。如此设置，可以阻隔声音向远离耳孔的方向传播，更利于第一壳体10和耳甲腔形成向耳孔反射声音的号筒结构，从而有利于降低耳机1的漏音，有效提高耳孔处的声压，有效增大听音音量。
可选地，如图21所示，第一壳体10的外壁面设置成使得出声孔111的长边孔沿111c呈弧形设置，第一壳体10的外壁面与耳甲腔的内壁面之间的距离D10在从第二端111b到第一端111a的方向上逐渐增加。如此设置可以使得声音在耳甲腔E12和第一壳体10的外壁面之间形成的号筒结构内向耳孔反射，而非向远离耳孔的方向反射，有效提升耳机1的出声效果，有效提高耳孔处的声压，有效增大听音音量。
可选地，如图21所示，出声孔111的长边孔沿111c的弧弦比介于1.05～1.4，例如可以为1.1、1.2、1.3等。其中，沿耳挂300的长度方向设置有对称面，该出声孔111的长边孔沿111c的弧弦比为长边孔沿111c在对称面上的投影轮廓的弧弦比。在一些实施例中，出声孔111的长边孔沿111c的弧长为10mm，弦长为8.87mm。可选地，出声孔111的宽长比介于0.15～0.30，例如为0.18、0.20、0.25等。可选地，出声孔111的长度可以介于9mm～16.5mm，例如为10mm、12mm、13mm、14mm、16mm等。在一些实施例中，出声孔111的内宽为1.95mm，外宽为2.58mm，出声孔111的长度为12.9mm。通过合理地设置出声孔111的长边孔沿111c的弧长、弦长、宽度和长度，以使得出声孔111的尺寸更加符合耳甲腔与耳孔的尺寸和形状，更便于形成增强声音的号筒结构，有效提升耳机1的出声效果，有效提高耳孔处的声压，有效增大听音音量。
可选地，所述出声孔111的长边孔沿111c的弧弦比介于1.05～1.4，或者，大于或等于1.02且小于1.05。例如所述出声孔111的长边孔沿111c的弧弦比可以为1.02、1.04、1.05、1.1、1.2、1.3等。可选地，所述出声孔111的长度介于9～16.5mm，或者，大于或等于5mm且小于9mm。例如出声孔111的长度可以为5mm、6mm、7mm、8mm、9mm、10mm、12mm、13mm、14mm、16mm等。通过合理地设置出声孔111的长边孔沿111c的弧弦比和出声孔111的长度，以使得出声孔111的尺寸更加符合耳甲腔与耳孔的尺寸和形状，更便于形成增强声音的号筒结构，有效提升耳机1的出声效果，有效提高耳孔处的声压，有效增大听音音量。
可选地，如图24所示，在将发声部100和抵接部400同时放置于水平参考面上时，出声孔111的长边孔沿111c在第一端111a和第二端111b之间与水平参考面形成第一参考点M，第二端111b位于第一参考点M朝向抵接部400一侧，第一端111a位于第一参考点M背离抵接部400一侧。如此设置可使得出声孔111的第一端111a更接近耳孔，而第二端111b附近的第一壳体10则可以与耳甲腔相抵接，并与抵接部400夹持在用户耳部EAR的两侧，进而在实现稳固夹持耳部EAR的同时利用耳甲腔增音量和声压，且第一壳体10抵接耳甲腔的部分可以进一步阻隔声音向远离耳孔的方向传播，有利于降低漏音。
可选地，出声孔111的长边孔沿111c在第一端111a和第一参考点M之间的长度D12介于2～5.5mm，例如可以为2.55mm、3.56mm、4mm、4.76mm等，出声孔111的长边孔沿111c在第二端111b和第一参考点M之间的长度D13介于4.5～8mm，例如可以为5.53mm、6mm、6.73mm、7.81mm等。上述长度均指出声孔111在对称面上的投影轮廓上的对应位置之间的距离。通过合理设置第一端111a和第二端111b到第一参考点M距离，进一步提升耳甲腔E12内声波向耳孔传播的增强效果，有效提高耳孔处的声压，有效增大听音音量。
可选地，出声孔111的长边孔在第一端111a和第一参考点M之间的弧弦比介于1.02～1.05，例如可以为1.03、1.04等，出声孔111的长边孔在第二端111b和第一参考点M之间的弧弦比介于1.02～1.05，例如可以为1.03、1.04等。上述弧弦比均指出声孔111在对称面上的投影轮廓上的对应位置之间的弧弦比。通过合理地设置出声孔111的长边孔沿111c在第一端111a和第二端111b与第一参考点M之间的弧弦比，在适应用户耳甲腔的形状以保障佩戴舒适度的同时，提升第一壳体10的外壁面与耳甲腔所形成的号筒结构的声音反射效果，有效提升听音音量和用户的使用感。
可选地，出声孔111的长边孔在第一端111a和第一参考点M之间的弧弦比介于1.02～1.05，或者，大于或等于1.001且小于1.02，例如可以为1.001、1.005、1.01、1.02、1.03、1.04等；出声孔111的长边孔在第二端111b和第一参考点M之间的弧弦比介于1.02～1.05，或者，大于1.05且小于或等于1.07，例如可以为1.03、1.04、1.05、1.06、1.07等。上述弧弦比均指出声孔111在对称面上的投影轮廓上的对应位置之间的弧弦比。通过合理地设置出声孔111的长边孔沿111c在第一端111a和第二端111b与第一参考点M之间的弧弦比，在适应用户耳甲腔的形状以保障佩戴舒适度的同时，提升第一壳体10的外壁面与耳甲腔所形成的号筒结构的声音反射效果，有效提升听音音量和用户的使用感。
可选地，如图24所示，出声孔111的长边孔沿111c在第一参考点M处具有第一法线方向F1，出声孔111的长边孔沿111c在第一端111a处具有第二法线方向F2，且出声孔111的长边孔沿111c在第二端111b处具有第三法线方向F3，第一法线方向F1与第二法线方向F2的夹角α1介于30°～42°，第一法线方向F1与第三法线方向F3的夹角α2介于50°～60°。第一法线方向F1与第二法线方向F2的夹角α1例如可以为32°、35°、37°等，第一法线方向F1与第三法线方向F3的夹角α2例如可以为53°、55°、57°等。上述夹角均指出声孔111在对称面上的投影轮廓上的对应位置之间夹角。通过合理地设置上述夹角，从而在保障出声孔111的空间大小同时，提升第一壳体10的外壁面与耳甲腔之间形成的号筒结构的声音反射效果，有效提升听音音量和用户的使用感。
可选地，如图24所示，出声孔111的长边孔沿111c在第一参考点M处具有第一法线方向F1，出声孔111的长边孔沿111c在第一端111a处具有第二法线方向F2，且出声孔111的长边孔沿111c在第二端111b处具有第三法线方向F3，第一法线方向F1与第二法线方向F2的夹角α1介于30°～42°，或者，大于或等于15°且小于30°；第一法线方向F1与第三法线方向F3的夹角α2介于50°～60°，或者，大于或等于25°且小于50°。第一法线方向F1与第二法线方向F2的夹角α1例如可以为15°、20°、25°、30°、32°、35°、37°等，第一法线方向F1与第三法线方向F3的夹角α2例如可以为25°、30°、35°、40°、50°、53°、55°、57°等。上述夹角均指出声孔111在对称面上的投影轮廓上的对应位置之间夹角。通过合理地设置上述夹角，从而在保障出声孔111的空间大小同时，提升第一壳体10的外壁面与耳甲腔之间形成的号筒结构的声音反射效果，有效提升听音音量和用户的使用感。
可选地，如图9所示，出声孔111具有沿其长度方向设置的中分线，出声孔111与沿耳挂300的长度方向设置的参考截面SF相交设置且中分线所在平面与参考截面SF的夹角介于0～45°，并且出声孔111朝向耳垂方向偏置。中分线可以为将出声孔111沿长度方向均分为两部分的虚拟曲线。优选地，声孔111与沿耳挂300的长度方向设置的参考截面SF相交设置且中分线所在平面与参考截面SF的夹角介于15°～45°，例如可以为20°、30°等。在一些实施例中，参考截面SF可以和耳挂300沿长度方向设置的对称面重合，因此后面描述对称面时也标注为对称面SF。如此，参考截面SF可以为沿耳挂300的长度方向设置的，且参考截面SF两侧的耳挂300部分差异最小或者一致。当然，在另一些实施例中，参考截面SF和耳挂的对称面彼此平行，但可以错开较小的间距。
通过合理设置出声孔111的中分线与耳挂300的参考截面SF之间的夹角，将出声孔111设置成朝向耳垂方向偏置，在保障用户佩戴舒适度的同时使得出声孔111输出的声音尽可能多地向耳孔传播，有效提升耳机1的使用感，具体为当用户自然佩戴耳机1时，耳机1随着用户的运动可能会在重力的作用下向下偏斜，如此设置可以使得即使在耳机1偏斜的情况下出声孔111也尽可能多地正对耳孔，有效提高用户在耳机1处于偏斜状态下的听音音量，提升用户使用感。
可选地，中分线所在平面与参考截面SF彼此重合。或者，出声孔111相对于参考截面SF呈镜像对称。如此设置使得耳机1可以同时适应左耳和右耳的佩戴和使用，在保障用户的佩戴舒适度的同时有效提升耳机1的适配性。
可选地，如图25所示，在参考截面SF上，发声部100具有最靠近抵接部400的第二参考点N。在一些实施例中，在自然状态下，发声部100和抵接部400不直接抵接，那么第二参考点N则为发声部100和抵接部400之间最短连线与发声部100的外壁面的交点，该最短连线的中点为O。在另一些实施例中，在自然状态下，发声部100和抵接部400恰好抵接或者抵接区域非常小，则认为发声部100与抵接部400的抵接点为第二参考点N。在又一些实施例中，在自然状态下，发声部100和抵接部400抵接区域较大，那么在参考截面SF上，发声部100的外壁面和抵接部400的抵接区域所对应的弧线的中点则为第二参考点N。
耳挂300的内轮廓在佩戴状态下靠近耳轮边缘的区域具有最远离第二参考点N的第三参考点C，出声孔111位于第二参考点N远离第三参考点C的一侧，且在发声部100的外壁面上，第二端111b到第二参考点N的距离D13介于2.2～4.2mm，第一端111a到第二参考点N的距离介于9～12.4mm。第二端111b到第二参考点N的距离例如可以为2.3mm、2.6mm、2.9mm等，第一端111a到第二参考点N的距离可以为9.8mm、10.7mm、11.6mm等，当然还可以为其他数值。上述距离均指出声孔111在对称面上的投影轮廓上的对应位置之间距离。
可选地，如图15所示，泄压孔112朝向耳轮设置，且与参考截面SF相交设置，或者泄压孔112朝向耳轮设置，且相对于所述参考截面SF呈镜像对称。如此设置可以在保障泄压孔112的泄压效果同时，有效降低泄压孔112和出声孔111之间发生干涉的可能性，有效提高耳机1工作的稳定性和可靠性。
可选地，如图1和图21所示，泄压孔112和出声孔111由发声部100与耳部EAR(例如耳甲腔)的接触区域彼此间隔。通过发声部100与接触区域将出声孔111和泄压孔112间隔开来，能够有效减小出声孔111和泄压孔112之间发生声短路的可能性，从而有效提升耳机1工作的可靠性，有利于提升耳机1的音质，且同时适用于用户的左耳和右耳，适配性高。
可选地，如图15所示，泄压孔112的数量为一个，且呈条形设置，参考截面SF沿泄压孔112的宽度方向设置且与参考截面SF相交设置。如此设置在保障泄压的面积以有效保障泄压孔112的泄压效果的同时，使得泄压孔112不过多向耳挂300的方向延伸，有利于提升耳机1的美观度。
可选地，所述泄压孔112的数量为两个，分别设置在所述参考截面SF的两侧，且所述泄压孔112相对于所述参考截面SF呈镜像对称，参考截面SF沿泄压孔112的宽度方向设置(也就是说，参考截面SF与泄压孔112的宽度方向平行，且允许15°以内的误差)。如此设置在保障泄压的面积以有效保障泄压孔112的泄压效果的同时，使得泄压孔112不过多向耳挂300的方向延伸，有利于提升耳机1的美观度。可选地，如图15所示，泄压孔112相对于参考截面SF呈镜像对称，在提升耳机1的美观度的同时，使得耳机1可以适应左耳和右耳的佩戴，有效提升耳机1的适配性。
可选地，如图15至图17所示，发声组件20设置有经第一容置空间连通泄压孔112的至少一个第二引声孔204，至少一个第二引声孔204与泄压孔112的距离不大于0.5mm，或者，大于0.5mm且小于或等于4mm。可选地，至少一个第二引声孔204与泄压孔112的距离不大于3mm。可选地，该距离不大于2mm。可选地，该距离不大于0.4mm，可选地，该距离不大于0.3mm。若引声孔到泄压孔112的距离过大，则会导致泄压性能的降低，从而对耳机1的音质造成影响。通过合理地设置引声孔到泄压孔112的距离，有效提升泄压效率，有利于提升耳机1的音质。
可选地，如图4、图19至图21所示，耳机1还包括麦克风30，第一壳体10上设置有用于将外部声音导向麦克风30的入声孔101，入声孔101与参考截面SF相交设置。麦克风30可用于收集声音，使得耳机1可以适应播放音乐和通话等不同的使用场景，且将入声孔101设置成与参考截面SF相交设置，在保障麦克风30经入声孔101收集声音的有效性的同时，使得耳机1可以同时适应左耳和右耳的使用，有效提升耳机1的适配性。图4中的剖切线V～V对应截面为参考截面SF。
可选地，耳挂300在发声部100和抵接部400之间提供弹性作用力，以使得发声部100和抵接部400具有在佩戴状态下夹持于耳廓两侧的夹紧力F。如图26所示，耳挂300设置成在自然状态下使得发声部100和抵接部400彼此抵接，以形成预紧力F0。
在佩戴状态下耳挂300可以发生一定的弹性形变，以在用户耳轮的两侧施加一定的弹性作用力，在弹性作用力的作用下发声部100和抵接部400分别抵接于耳廓的两侧，以对耳部进行夹持。然而，耳挂300提供的弹性作用力若太大，则夹紧力F过大，会对耳部造成不适，若太小，则夹紧力F过小，难以佩戴稳定。
由胡克定律可知，弹性形变产生的弹性作用力与该物体形变量成正比，比值为弹性系数。为了满足夹持厚度较小的耳部的需求，通常会将耳挂300的弹性系数设置的较大，但这会导致当夹持的耳部厚度较大时，施加的弹性作用力太大而导致疼痛，佩戴舒适度并不高，而且弹性系数较大导致在适配不同厚度的耳部时夹紧力F变化较大，进而导致夹紧力F差异较大，导致用户体验感差异较大，兼容性不高。如图27所示，夹紧力变化线L1是没有预紧力，而且弹性系数较大，导致发声部100和抵接部400之间的距离从Xs变化到Xm时夹紧力F较大，且夹紧力变化量△F1变化较大。基于此，通过将耳挂300设置成在自然状态下使得发声部100和抵接部400彼此抵接，以形成预紧力，从而可以将耳挂300的弹性系数减小，使得当夹持厚度较小和厚度较大的耳部时，耳挂300施加的弹性作用力变化较小，有效降低夹持厚度较小和厚度较大的耳部的夹紧力F差异，有效提升耳机1的适配性以及佩戴舒适性，使得耳机1可以供更多耳部大小的用户人群进行佩戴。如图27所示，相对于夹紧力变化线L1，夹紧力变化线L2在具有预紧力F0的基础上，从发声部100和抵接部400之间的距离从Xs变化到Xm时夹紧力F较小，而且夹紧力变化量△F2也较小，因此能够有效地实现上述技术效果，如降低夹持厚度较小和厚度较大的耳部的夹紧力F差异，有效提升耳机1的适配性以及佩戴舒适性，使得耳机1可以供更多耳部大小的用户人群进行佩戴。
经过申请人为了提升耳机1的佩戴舒适度进行的大量实证调研，发现小耳人群的耳部厚度Xs大致为3.8mm，而大耳人群的耳部厚度Xm大致为5.5mm。在获得这一数据后，申请人对耳机1在预紧力以及弹性系数等方面进行相应的研究。
可选地，耳挂300的弹性系数设置成在发声部100和抵接部400之间的最小间隔从3.8mm增加到5.5mm时，弹性作用力的变化量小于或等于20克力，例如可以为5克力、10克力、15克力。如图27所示，在具有预紧力F0的基础上，在发声部100和抵接部400之间的距离为Xm时夹紧力F较小，且夹紧力变化量△F2也较小。
通过合理地设置弹性系数，以使得弹性作用力在满足夹持需求的情况下，弹性作用力的变化较小，以使得耳机1在夹持厚度较大和厚度较小的耳部时，耳挂300提供的夹持力差距较小，在满足佩戴舒适度的同时，有效提升耳机1的适配性。
可选地，耳挂300的弹性系数和预紧力设置成在发声部100和抵接部400之间的最小间隔从3.8mm增加到5.5mm时，弹性作用力介于25克力～65克力之间，例如可以为30克力、40克力、50克力等。
通过合理地设置耳挂300的弹性系数和预紧力，以提供合适的弹性作用力，从而在佩戴状态下为用户提供合适的夹紧力F，在保障佩戴稳定性的同时提升佩戴舒适度。
如图28所示，预紧力F0可以通过薄膜压力传感器600测量，具体为在抵接部400和发声部100之间的夹持薄膜压力传感器600进行测量。在另一些实施方式中，如图29和图30，预紧力F0也可以通过拉力计/传感器607、613进行测量，例如通过固定发声部100和抵接部400中一者，而拉动发声部100和抵接部400中的另一者，使得两者恰好接触/分离，或者两者之间的最小间距为一较小的距离时，所测得的拉力为预紧力。该较小的距离例如为0～0.8mm。
如图29和图30所示，夹紧力F可以在发声部100和抵接部400水平设置时进行测量，具体为通过拉力计/传感器固定住抵接部400，而拉动发声部100进行测量。例如将线粘接在发声部100的壳体后，牵拉线位移例如3.8mm～5.5mm进行测量。
如图29所示，通过粘合剂(例如，速干胶水、热熔胶等)或其他不破坏耳机1的结构等固定方式，将辅助板603和角码601在X方向上固定(在X方向上不产生相对位移)，将辅助板604和角码602在X方向上固定(在X方向上不产生位移)，并将辅助板603和辅助板604放置在X方向上的摩擦系数较小的支撑台面(例如，润滑油界面或轴承支撑上的支撑台面)上。角码601在Y方向上的内侧、角码602在Y方向上的内侧分别和耳机1靠近耳挂300两端的两侧相切，从而将耳机1固定在角码601和角码602之间。在X方向上将测力仪607连接到角码602上，例如通过螺钉606固定测力仪607和角码602。在一些实施例中，可以通过粘合剂(例如，速干胶水、热熔胶等)或其他不破坏耳机1的结构的固定方式进一步固定耳机1，使得耳机1分别与两个角码601、602的连接位置接近于水平方向。例如，如图29所示，发声部100一侧与角码601在A位置固定连接，抵接部400一侧与角码602在B位置固定连接，A位置和B位置之间连线大致和X方向平行。在测量时，固定辅助板604，用X方向上的拉力移动辅助板603，使得发声部100和抵接部400拉开距离，并通过测力仪607获取拉力的大小，通过游标卡尺获取辅助板603和辅助板604之间的距离，即发声部100和抵接部400之间拉开的距离。
如图30所示，通过固紧件608将抵接部400固定在两夹持板之间，通过粘合剂(例如，速干胶水、热熔胶等)将测力线612的一端连接在发声部100远离抵接部400一侧的壳体上(例如，测力线612与发声部100在C位置连接，而耳挂300的对称面SF可以经过C位置)，将测力线612的另一端连接到测力仪614上。测力线612与X方向平行。在测量时，用X方向上的拉力移动测力仪614，从而牵拉发声部1移动，使得发声部100和抵接部400拉开距离，并通过游标卡尺609获取发声部100和抵接部400之间拉开的距离，通过测力仪14获取拉力的大小。
可选地，预紧力设置成介于1克力～25克力之间，且耳挂300的弹性系数设置成在最小间隔为3.85mm时，弹性作用力介于25克力～48克力之间，在最小间隔为5.5mm时，弹性作用力介于26克力～65克力之间。可选地，耳挂300的宽度可以介于3～10mm之间，厚度可以介于0.5～5mm之间。通过合理地设置耳挂300的宽度和厚度参数，使得弹性作用力在使用情景下基本呈线性变化，且在满足夹持稳定性的情况下，有效提升佩戴舒适度，有效提升耳机1的适配性，佩戴的稳定性和可靠性。
可选地，如图26所示，耳机1还可以包括磁耦匹配结构50，磁耦匹配结构50在发声部100和抵接部400之间提供磁耦作用力，磁耦作用力和弹性作用力配合形成夹紧力F，磁耦作用力随发声部100和抵接部400之间的最小间隔的变化趋势与弹性作用力随最小间隙的变化趋势相反，例如当发声部100和抵接部400之间的最小间隔逐渐变大时，弹性作用力逐渐变大，磁耦作用力逐渐变小。其中，磁耦匹配结构50提供的磁耦作用力可以用于耳挂300在自然状态下使得发声部100和抵接部400彼此抵接的情况，也可以用于耳挂300设置成在自然状态下使得发声部100和抵接部400彼此分离的情况。
通过设置磁耦匹配结构50以提供的磁耦作用力，从而使得磁耦作用力可以与弹性作用力相配合以在佩戴状态下提供较为合适的夹紧力F，并能够有效减小最小间距发生变化时夹紧力F的变化和波动，有效提升佩戴舒适度，降低耳挂300所需要提供的预紧力，使得用户的佩戴过程更加顺畅。
可选地，如图31所示，磁耦匹配结构50包括设置于发声部100上的第一磁耦匹配件51和设置于抵接部400上的第二磁耦匹配件52，第一磁耦匹配件51与第二磁耦匹配件52彼此磁性吸引。第一磁耦匹配件51和第二磁耦匹配件52可以为磁铁，发声部100上的第一磁耦匹配件可以是喇叭21的磁铁242，也可以额外设置的磁铁或者其他磁性件。通过分别在发声部100和抵接部400上设置第一磁耦匹配件51和第二磁耦匹配件52，以利用第一磁耦匹配件51和第二磁耦匹配件52之间的磁性吸引提供磁耦作用力，从而在夹持厚度较大或者厚度较小的耳部EAR时均保持波动不大且大小适中夹持力，有效提升佩戴舒适度。可选地，磁铁可以呈海尔贝克阵列排布，以增大提供的磁力，有利于提升佩戴稳定性。可选地，磁铁设置在第一柔性体14中，以避免对其他组件造成干涉，提高耳机1结构的集成性和紧凑性。
在佩戴状态下，第一磁耦匹配件51和第二磁耦匹配件52之间的吸引力可以补偿发声部100和抵接部400之间的夹紧力F。如图31所示，第一磁耦匹配件51和第二磁耦匹配件52可以相互吸引，产生吸引力FA以补偿耳挂300为发声部100和抵接部400提供的夹紧力F。也就是说，在佩戴状态下，夹紧力F包括吸引力FA以及耳挂300因弹性形变产生的弹性作用力Fk。在一些实施例中，可以通过公式(1)表示第一磁耦匹配件51和第二磁耦匹配件52之间的距离和吸引力的关系：
其中，K是常数，m1可以表示第一磁耦匹配件51的磁矩，m2可以表示第二磁耦匹配件52的磁矩，d可以表示第一磁耦匹配件51和第二磁耦匹配件52之间的距离，X0可以表示非佩戴状态下第一磁耦匹配件51和第二磁耦匹配件52之间的距离，x可以表示佩戴状态下第一磁耦匹配件51和第二磁耦匹配件52因为发声部100和抵接部400的移动而增加的距离。
由公式(1)可知，发声部100和抵接部400之间的距离增加量X越大，第一磁耦匹配件51和第二磁耦匹配件52之间的距离d相应变大，第一磁耦匹配件51和第二磁耦匹配件52之间的吸引力FA相应减小。
在一些实施例中，可以利用测力仪和不同厚度的垫材(例如，硅胶垫、厚纸片、橡胶垫等)，测量第一磁耦匹配件51和第二磁耦匹配件52之间的不同距离对应的不同吸引力。例如可以切断耳机1的耳挂300，然后固定发声部100和抵接部400中的任意一个部件，将发声部100和抵接部400中的另一个部件与测力仪连接。发声部100、抵接部400和测力仪大致可以参照图29和图30。在发声部100和抵接部400之间放置不同厚度的垫材从而控制第一磁耦匹配件51和第二磁耦匹配件52之间的距离，同时通过测力仪测量放置不同厚度垫材时第一磁耦匹配件51和第二磁耦匹配件52之间的吸引力。在一些实施例中，吸引力可以通过薄膜压力传感器来测量。具体地，在切断耳挂300后，将薄膜压力传感器和不同厚度的垫材放置在发声部100和抵接部400中间，使得薄膜压力传感器受到发声部100中第一磁耦匹配件51和抵接部400中第二磁耦匹配件52的吸引力挤压，从而测量第一磁耦匹配件51和第二磁耦匹配件52之间的不同距离对应的吸引力。
在一些实施例中，在非佩戴状态下，耳挂300可以提供预紧力F0使发声部100与抵接部400相互抵接。关于预紧力的详细描述可以上述相关描述，在此不再赘述。
在一些实施例中，在非佩戴状态下，发声部100与抵接部400不相接触。在非佩戴状态下，发声部100和抵接部400不相接触，即发声部100和抵接部400之间不存在预紧力使其相互抵接。
在一些实施例中，在佩戴状态下，发声部100和抵接部400之间的夹紧力F包括耳挂300由于弹性形变产生的弹性作用力Fk和第一磁耦匹配件51和第二磁耦匹配件52之间的吸引力FA。在一些实施例中，夹紧力F还可以包括耳挂300为发声部100与抵接部400相抵接提供的预紧力F0。
由前述可知，为了保证耳机1在佩戴者耳朵上佩戴的稳固性，由夹紧力F(即弹性作用力和吸引力之和，或者弹性作用力、吸引力和预紧力之和)需要大于最小耳廓厚度对应的夹紧力下限。并且，需要确保夹紧力小于最大耳廓厚度对应的夹紧力上限值，才能避免耳夹式耳机给耳廓厚度较大的用户带来佩戴不适感。在一些实施例中，发声部100的壳体与抵接部400的距离在3.5mm～5.6mm或3.8mm～5.5mm之间时，由夹紧力F(即弹性作用力和吸引力之和，或者弹性作用力、吸引力和预紧力之和)可以在0.20N～0.70N之间。例如，可以基于最小耳廓厚度对应的夹紧力下限0.20N和最大耳廓厚度对应的夹紧力上限0.70N，确定由耳挂300提供的夹紧力(即弹性作用力和吸引力之和，或者弹性作用力、吸引力和预紧力之和)在0.20N～0.70N之间。在一些实施例中，发声部100的壳体与抵接部400的距离在3.8mm～5.5mm之间时，夹紧力F(即弹性作用力和吸引力之和，或者弹性作用力、吸引力和预紧力之和)可以在0.25N～0.65N之间。又例如，可以基于最小耳廓厚度对应的夹紧力下限0.25N和最大耳廓厚度对应的夹紧力上限0.65N，确定由耳挂300提供的夹紧力(即弹性作用力和吸引力之和，或者弹性作用力、吸引力和预紧力之和)在0.25N～0.65N之间。
由前述可知，发声部100和抵接部400之间的距离X越大，耳挂300提供的弹性作用力Fk越大，第一磁耦匹配件51和第二磁耦匹配件52之间的吸引力FA越小，因此可以基于第一磁耦匹配件51和第二磁耦匹配件52之间的吸引力进一步减少小耳用户受到的夹紧力F与大耳用户受到的夹紧力F之间的差距。例如，将夹紧力F限定在0.3N～0.5N之间，即同时将小耳用户受到的夹紧力与大耳用户受到的夹紧力之间的差距缩小为0.20N。在一些实施例中，发声部100的壳体与抵接部400的距离在3.8mm～5.5mm之间时，由夹紧力F的变化不超过0.20N。由此可知，如图27所示，为了确保小耳用户受到的夹紧力与大耳用户受到的夹紧力之间的差距较小，可以基于最小耳廓厚度Xs、设定的夹紧力下限F1、最大耳廓厚度Xm、设定的夹紧力上限F3，限定发声部100与抵接部400的距离在3.8mm和5.5mm之间变化时，夹紧力的变化例如不超过0.20N(即F3和F1之差)。
在一些实施例中，发声部100与抵接部400的距离在3.8mm～5.5mm之间时，第一磁耦匹配件51和第二磁耦匹配件52相互吸引的吸引力的变化可以在0.05N～0.10N之间。
如图32所示，夹紧力F包括弹性作用力Fk和吸引力FA。第一磁耦匹配件51和第二磁耦匹配件52之间的初始距离为X0。弹性作用力Fk等于kX，其中，k是弹性系数，X为发声部100和抵接部400之间的距离。吸引力FA可以基于上文所述的公式(1)计算。发声部100与抵接部400之间的距离在X1到X2之间时，弹性作用力Fk在Fsk到Fmk之间，吸引力FA在Fma到Fsa之间，夹紧力F在Fs到Fm之间，其中，Fs＝Fma+Fsk，Fm＝Fmk+Fsa。例如，发声部100与抵接部100的距离在3.8mm～5.5mm之间时，对应的弹性作用力在0.27N～0.35N之间，为了保证夹紧力在0.3N～0.4N之间，则需要补偿的吸引力在0.03(0.3～0.27＝0.03)N～0.05(0.4～0.35＝0.05)N之间。从图13A可以看出，通过设置合适的磁耦参数(K、m1、m2、X0)等以及弹性系数k等，即可以实现在X1～X2的范围内Fk增量与FA减量大致上相互抵消或者大部分抵消，令总的夹紧力F在X1～X2的范围内保持基本稳定，从而使耳机1给不同耳廓厚度的用户带来的用户体验保持一致。X1～X2的范围例如包括3.8mm～5.5mm。
在一些实施例中，耳挂300进一步提供预紧力F0，可以通过调整预紧力F0和吸引力FA的大小来使总的夹紧力F保持在合适的范围内。如图33所示，耳挂300可以同时提供弹性作用力Fk、预紧力F0和吸引力FA，此时耳挂300对大耳用户的夹紧力F已超过预紧力上限。可以通过将预紧力F0从F01降低至F02，来使夹紧力F在最小耳廓厚度Xs和最大耳廓厚度Xm的范围内，夹紧力F对应的曲线较为平缓，且在合适的夹紧力区间范围内，说明预紧力和吸引力相配合能提高耳夹式耳机的佩戴稳定性和舒适度，并减小大耳用户和小耳用户的夹紧力差异。
可选地，弹性作用力和磁耦作用力设置成在发声部100和抵接部400之间的最小间隔从3.85mm增加到5.5mm时，夹紧力介于25克力～65克力之间，例如可以为30克力、40克力、50克力、60克力等。应当指出的是，1克力表示1克的物体所受的重力。
通过合理地设置弹性作用力和磁耦作用力，从而在佩戴状态下为不同耳朵大小的用户提供一致的夹紧力，在保障佩戴稳定性的同时提升佩戴舒适度。
可选地，磁耦作用力设置成在发声部100和抵接部400之间的最小间隔从3.8mm增加到5.5mm时，磁耦作用力的变化量大于或等于20克力。如此设置可以使得磁耦作用力的变化量相对较大，则弹性作用力的变化量可以相对较小，从而耳挂300的弹性系数可以设置的相对较小，使有利于提升耳机1佩戴的稳定性和可靠性。
可选地，如图34所示，耳挂300包括弹性片301，弹性片301沿其长度方向的两端分别与发声部100和抵接部400相对固定，弹性片301的宽度W31和厚度K31的比值为8～12，例如可以为9、10、11等。在一些实施例中，弹性片301的宽度W31为介于1～3mm之间，例如可以为2mm，厚度K31介于0.1～0.3mm之间，例如可以为0.15mm、0.2mm、0.25mm等。
通过设置弹性片301以提供弹性作用力，从而实现耳机1的夹持佩戴，并通过合理地设置宽度和厚度的比值，在保障耳挂300具有足够的强度的同时满足弹性作用力的需求，使得耳机1兼具佩戴舒适度和佩戴稳定性。此外，合理地设置弹性片301的宽度和厚度可以减小弹性片301所受的扭矩，防止扭转，还使得提供的弹性作用力的变化更线性，有效提升佩戴舒适度。弹性片301例如可以为钛片，其外部包覆有柔性材料，例如硅胶、橡胶、弹性树脂、聚氨酯材料、聚二甲基硅氧烷、PVC、TPE等材料，以提升佩戴舒适度。
可选地，耳机1还包括软质电路板(FPC)，其中，软质电路板沿弹性片301的长度方向布置，并设置与于弹性片301上，基于此能有效地减小耳机1上的布线难度。例如FPC可以大致贴着弹性片301的上表面或者下表面延伸设置。弹性片301的两端可以设置有接插块2332，两端的接插块2332可以分别与发声部100和抵接部400接插连接，弹性片301在靠近接插块2332的位置设置有沿宽度方向贯穿至弹性片301的侧边缘的缺口2330，该缺口2330便于封胶，使得注塑效果更好。
可选地，如图35所示，耳机1具有一参考截面SF，参考截面沿耳挂300的长度方向设置，其中，在佩戴状态下，参考截面与人体水平面近乎平行。在参考截面内，耳挂300、发声部100和抵接部400具有一内轮廓，其中，内轮廓上至少包括参考点C、参考点E和参考点H。
在佩戴状态下，参考点C为位于耳挂300的内轮廓上且对应于耳轮边缘(例如耳轮的最顶部/最外侧边缘)的参考点，并且参考点C可以为内轮廓的转折点，例如，内轮廓300为整体背离耳轮E17突出的轮廓线。位于在耳轮边缘的附近区域的部分内轮廓300的曲率半径在以参考点C为起点分别向发声部300和抵接部400先逐渐增大后逐渐减小再逐渐增大。
在一些实施例中，自然状态下，发声部210的外壁面和400的外壁面之间不发生抵接，发声部100的外壁面和抵接部400的外壁面之间具有距离最短的位置，两者的距离最短的位置之间的连线的中点为0点。若自然状态下，发声部210的外壁面和400的外壁面之间发生抵接，故此发声部210的外壁面与400的外壁面之间的最短连线的长度近乎为0，此时参考点O应为发声部210的外壁面与400的外壁面抵接的抵接区域所对应形成的弧线的中点。参考点C是内轮廓中与O点距离最大的参考点。参考点L是发声部100具有最靠近参考点C的位置点。参考点K是发声部100最远离参考点C的位置点。
可选地，如图35所示，参考点C和参考点E之间形成连线CE，参考点C和参考点H之间形成连线CH，在自然状态下，连线CE的长度介于16～19mm，连线CH的长度介于6.5～9.0mm，连线CE和连线CH之间的夹角介于72°～88°，参考点C和参考点E之间的内轮廓位于连线CE的外侧，参考点C和参考点H之间的内轮廓位于连线CH的外侧。
在佩戴使用耳夹式耳机1的体验中，若耳机1的内轮廓与耳轮接触，在长期使用过程中会极大地影响耳机1佩戴舒适度，影响佩戴者的使用体验。
其中，连线CE和连线CH之间的夹角过小会导致耳机1的内轮廓，尤其是参考点C和参考点E之间的内轮廓以及参考点C和参考点H之间的内轮廓，不能尽可能绕过耳轮，过大则会增大耳机1的整体结构尺寸影响耳机1的整体美观度，故此将连线CE和连线CH之间的夹角设置在72°～88°的范围内，使得确保耳机1的内轮廓能尽可能的绕过耳轮，减少耳机1的内轮廓与耳轮的接触，从而有效地提升耳机1的佩戴舒适度及美观度。例如，在一些实施例中，连线CE和连线CH之间的夹角可以设置为80°。
进一步地，连线CE的长度过小会导致发声部100无法伸进耳甲腔内影响耳机1的发声质量，或者发声部100伸进耳甲腔内后耳机1的内轮廓，尤其是参考点C处的位置接触耳轮，而过大则会增大耳机1的整体结构尺寸影响耳机1的美观度，故此将连线CE的长度设置在16～19mm的范围内，能在确保发声部100稳定的伸进耳甲腔的同时，确保内轮廓及发声部100不与耳轮E17接触，从而有效地提升耳机1200的佩戴舒适度及美观度的同时，有效地提升耳机1传声质量。进一步地，连线CH的长度过小会导致抵接部400与耳轮发生接触，过大则会增大耳机1的整体结构尺寸影响耳机1的美观度，故此将连线CH的长度设置在6.5～9.0mm，能更好的确保耳机1的内轮廓能尽可能的绕过耳轮，以确保耳机1的内轮廓及抵接部400不与耳轮接触，从而有效地提升耳机1的佩戴舒适度。例如，在一些实施例中，连线CE的长度设置为17.13mm，连线CH的长度设置为7.59mm。
可选地，内轮廓在参考点C和参考点E之间的弧弦比介于1.02～1.20。可选地，内轮廓在参考点C和第三参考点H之间的弧弦比介于1.05～1.23。
具体地，内轮廓在参考点C和参考点H之间的弧弦比具体指的是，参考点C和参考点H之间的内轮廓的实际长度与连线CE的长度的比值，例如，在一些实施例中，内轮廓为弯弧状曲线轮廓，在参考点C和参考点E之间的内轮廓的弧线比即为参考点C和参考点E之间的内轮廓的弧长与连线CE的长度的比值。值得注意的是，在本实施例中，内轮廓在参考点C和参考点E之间的内轮廓为背离连线CE凸出的连续弧线。在其它实施例中，内轮廓也可以不设置为曲线，其也可以是多段折线等。
其中，内轮廓在参考点C和参考点E之间的弧弦比过小会使得参考点C和参考点E之间的内轮廓较平直，不利于参考点C和参考点E之间的内轮廓绕过耳轮，内轮廓在参考点C和参考点E之间的弧弦比过大又会导致参考点C和参考点E之间的内轮廓过于弯曲，影响耳机1的整体美观度，故此将内轮廓在参考点C和参考点E之间的弧弦比设置在1.02～1.20的范围内，使得参考点C和参考点E之间的内轮廓尽可能的绕过耳轮，不与耳轮接触，从而有效地提升耳机1的佩戴舒适度的同时还能有效地提升耳机10的美观度。例如，在一些实施例中，参考点C和参考点E之间的弧弦比可以设置为1.1。
可选地，在参考点L和参考点K之间且朝向抵接部400的一侧，发声部100的外壁面的弧弦比介于1.4～1.7。基于此设置使得发声部100朝向抵接部400一侧更趋向于球形。其中，参考点L和参考点K之间且朝向抵接部400一侧，发声部100的外壁面为朝向抵接部400一侧凸出的连续弧形面。例如，在一些实施例中，参考点L和参考点K之间且朝向抵接部400一侧，发声部100的外壁面的弧弦比可以设置为1.64。
可选地，参考点C和参考点L之间形成连线CL，连线CL位于连线CE和连线CH之间，连线CL的长度介于13～17mm，连线CL与连线CE之间的夹角介于15°～27°。
具体地，参考点L为发声部100上最靠近参考点C的一个特殊点，故此连线CL和连线CE之间的夹角在一定程度上决定发声部100能否充分的放置于耳甲腔内，连线CL的长度在一定程度上决定发声部100能否在充分放置于耳甲腔1内时，耳机1的内轮廓还能不与耳轮发生接触。故此将连线CL的长度设置于13～17mm之间，连线CL与连线CE之间的夹角设置于15°～27°之间，基于此使得内轮廓在不与耳轮接触或挤压的前提下，发声部100还能充分的放置于耳甲腔内，从而有效地提升耳机1的佩戴舒适度的同时，还能有效地提升耳机1的传声质量。例如，在一些实施例中，第三连线的长度设置为15mm，连线CL与连线CE之间的夹角设置为21°。
可选地，参考点C和参考点K之间形成连线CK，连线CK位于连线CE和连线CH之间，连线CK的长度介于24～30mm，连线CK与连线CE之间的夹角介于13°～25°。
在耳机1处于佩戴状态时，参考点K最靠近耳孔，其中，若参考点K过于靠近耳孔则会将耳孔遮挡住，影响用户的使用体验，若参考点K过于远离耳孔，则会影响耳机1的传声效果，故此将连线CK的长度设置于24～30mm的范围之间，连线CK与连线CE之间的夹角设置于13°～25°的范围之间，基于此能使得发声部100在伸入耳甲腔时，发声部100上靠近参考点K处的区域与耳孔保持较为适中的距离，从而有效地防止发声部100遮挡耳孔的同时，有效地提升耳机1的传声效果。例如，在一些实施例中，连线CK的长度可以设置为27.7mm，连线CK与连线CE之间的夹角可以设置为20°。
可选地，如图35所示，沿内轮廓，在参考点C两侧且距离参考点C各6mm的两点之间具有的弧段T1T2，弧段T1T2的弧弦比介于1.03～1.10。如此设置可以有效减小应力集中，有效提高耳挂300的使用寿命和可靠性，有利于保证耳机300的佩戴稳定性，
以上所述仅为本申请的部分实施例，并非因此限制本申请的保护范围，凡是利用本申请说明书及附图内容所作的等效装置或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (21)

  1. 一种耳机，其特征在于，所述耳机包括发声部、抵接部和耳挂，所述耳挂连接所述发声部和所述抵接部，所述发声部用于将电信号转换成声信号并播放，所述抵接部内设置有电池，在佩戴状态下，所述发声部和所述抵接部在使用者的耳轮两侧形成夹持状态，且所述发声部位于耳甲腔内，所述发声部包括第一壳体和发声组件，用于形成第一容置腔，所述发声组件设置于所述第一容置腔内，所述第一壳体上设置有出声孔，所述发声组件产生的声音经所述出声孔输出，所述出声孔呈条状设置，且具有沿所述出声孔的长度方向间隔设置的第一端和第二端，在所述佩戴状态下，所述第一端朝向耳孔设置，且所述第二端处的所述第一壳体的外壁面与所述耳甲腔的内壁面之间的距离小于所述第一端处的所述第一壳体的外壁面与所述耳甲腔的内壁面之间的距离。
  2. 根据权利要求1所述的耳机，其特征在于，在所述第二端处和/或所述第二端远离所述第一端的一侧，所述第一壳体的外壁面与所述耳甲腔的内壁面彼此接触。
  3. 根据权利要求2所述的耳机，其特征在于，所述第一壳体的外壁面设置成使得所述出声孔的长边孔沿呈弧形设置，所述第一壳体的外壁面与所述耳甲腔的内壁面之间的距离在从所述第二端到所述第一端的方向上逐渐增加。
  4. 根据权利要求2所述的耳机，其特征在于，所述出声孔的长边孔沿的弧弦比介于1.05～1.4(1.06)，或者，大于或等于1.02且小于1.05。
  5. 根据权利要求3所述的耳机，其特征在于，所述出声孔的宽长比介于0.15～0.30。
  6. 根据权利要求3所述的耳机，其特征在于，所述出声孔的长度介于9～16.5mm(7)，或者，大于或等于5mm且小于9mm。
  7. 根据权利要求3所述的耳机，其特征在于，在将所述发声部和所述抵接部同时放置于水平参考面上时，所述出声孔的长边孔沿在所述第一端和第二端之间与所述水平参考面形成第一参考点，所述第二端位于所述第一参考点朝向所述抵接部一侧，所述第一端位于所述第一参考点背离所述抵接部一侧。
  8. 根据权利要求7所述的耳机，其特征在于，所述出声孔的长边孔在所述第一端和所述第一参考点之间的长度介于2～5.5mm，所述出声孔的长边孔在所述第二端和所述第一参考点之间的长度介于4.5～8mm。
  9. 根据权利要求8所述的耳机，其特征在于，所述出声孔的长边孔在所述第一端和所述第一参考点之间的弧弦比介于1.02～1.05(1.01)，或者，大于或等于1.001且小于1.02；所述出声孔的长边孔在所述第二端和所述第一参考点之间的弧弦比介于1.02～1.05(1.04)，或者，大于1.05且小于或等于1.07。
  10. 根据权利要求8所述的耳机，其特征在于，所述出声孔的长边孔沿在所述第一参考点处具有第一法线方向，所述出声孔的长边孔沿在所述第一端处具有第二法线方向，且所述出声孔的长边孔沿在所述第二端处具有第三法线方向，所述第一法线方向与所述第二法线方向的夹角介于30°～42°(26)，或者，大于或等于15°且小于30°；所述第一法线方向与所述第三法线方向的夹角介于50°～60°(41)，或者，大于或等于25°且小于50°。
  11. 根据权利要求3所述的耳机，其特征在于，所述出声孔具有沿其所述长度方向设置的中分线，所述出声孔与沿所述耳挂的长度方向设置的参考截面相交设置且所述中分线所在平面与所述参考截面的夹角介于0～45°，并且所述出声孔朝向耳垂方向偏置。
  12. 根据权利要求11所述的耳机，其特征在于，所述中分线所在平面与所述参考截面彼此重合；或者，所述出声孔相对于所述参考截面呈镜像对称。
  13. 根据权利要求11或12所述的耳机，其特征在于，在所述参考截面上，所述发声部具有最靠近所述抵接部的第二参考点，所述耳挂的内轮廓在佩戴状态下靠近耳轮边缘的区域具有最远离所述第二参考点的第三参考点，所述出声孔位于所述第二参考点远离所述第三参考点的一侧，且在所述发声部的外壁面上，所述第二端到所述第二参考点的距离介于2.2～4.2mm，所述第一端到所述第二参考点的距离介于9～12.4mm。
  14. 根据权利要求11或12所述的耳机，其特征在于，所述发声部还设置有泄压孔，所述泄压孔朝向耳轮设置，且所述泄压孔与所述参考截面相交设置或所述泄压孔相对于所述参考截面呈镜像对称。
  15. 根据权利要求14所述的耳机，其特征在于，所述泄压孔和所述出声孔由所述发声部与所述耳甲腔的接触区域彼此间隔。
  16. 根据权利要求15所述的耳机，其特征在于，所述泄压孔的数量为一个，且呈条形设置，所述参考截面沿所述泄压孔的宽度方向设置，且与所述泄压孔相交设置。
  17. 根据权利要求15所述的耳机，其特征在于，所述泄压孔的数量为两个，分别设置在所述参考截面的两侧，且相对于所述参考截面呈镜像对称，所述参考截面沿所述泄压孔的宽度方向设置。
  18. 根据权利要求15所述的耳机，其特征在于，所述泄压孔包括沿所述泄压孔的长度方向的第一孔部和第二孔部，以及连接于所述第一孔部和所述第二孔部之间的第三孔部，其中所述第一孔部和所述第二孔部的至少部分位置的宽度大于所述第三孔部的宽度。
  19. 根据权利要求15或17所述的耳机，其特征在于，所述发声组件设置有经所述第一容置空间连通所述泄压孔的引声孔，所述引声孔与所述泄压孔的距离不大于0.5mm，或者大于0.5mm且小于或等于4mm。
  20. 根据权利要求11或12所述的耳机，其特征在于，所述耳机还包括麦克风，所述第一壳体上设置有用于将外部声音导向所述麦克风的入声孔，所述入声孔与所述参考截面相交设置。
  21. 根据权利要求1所述的耳机，其特征在于，所述发声组件包括两个喇叭，每个所述喇叭包括振膜，所述两个喇叭沿轴线方向彼此组装配合，以在所述两个喇叭之间形成第一声学腔，所述发声组件设置有连通所述出声孔和所述第一声学腔的第一引声孔，所述出声孔和所述第一引声孔沿所述发声组件的径向彼此连通，所述第一引声孔进一步呈条形设置，且所述出声孔和所述第一引声孔的长度方向沿所述发声组件的周向设置。
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