WO2025124113A1 - 一种耳机 - Google Patents

一种耳机 Download PDF

Info

Publication number
WO2025124113A1
WO2025124113A1 PCT/CN2024/134012 CN2024134012W WO2025124113A1 WO 2025124113 A1 WO2025124113 A1 WO 2025124113A1 CN 2024134012 W CN2024134012 W CN 2024134012W WO 2025124113 A1 WO2025124113 A1 WO 2025124113A1
Authority
WO
WIPO (PCT)
Prior art keywords
reference point
line
sound
inner contour
earphone
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/CN2024/134012
Other languages
English (en)
French (fr)
Inventor
钟雷
刘昊宸
余诗雨
徐江
袁伟杰
文小棒
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
Priority to CN202480028872.0A priority Critical patent/CN121128186A/zh
Priority to EP24902535.4A priority patent/EP4727161A1/en
Publication of WO2025124113A1 publication Critical patent/WO2025124113A1/zh
Priority to US19/432,218 priority patent/US20260122396A1/en
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type
    • 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
    • H04R1/1016—Earpieces of the intra-aural type
    • 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
    • H04R1/1041—Mechanical or electronic switches, or control elements
    • 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
    • H04R1/1058—Manufacture or assembly
    • H04R1/1066—Constructional aspects of the interconnection between earpiece and earpiece support
    • 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
    • H04R1/1058—Manufacture or assembly
    • H04R1/1075—Mountings of transducers in earphones or 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

  • Electronic devices have become an indispensable social and entertainment tool in people's daily lives, and people's requirements for electronic devices are getting higher and higher.
  • Electronic devices such as headphones have also been widely used in people's daily lives. They can be used in conjunction with terminal devices such as mobile phones and computers to provide users with an auditory feast.
  • terminal devices such as mobile phones and computers to provide users with an auditory feast.
  • headphones can generally be divided into air conduction headphones and bone conduction headphones; according to the way users wear headphones, they can generally be divided into headphones, ear clip headphones and in-ear headphones; according to the way headphones interact with electronic devices, they can generally be divided into wired headphones and wireless headphones.
  • the connecting portion has an inner contour
  • the inner contour has a second reference point farthest from the first reference point
  • the inner contour also has a third reference point located on the side of the second reference point toward the sound-emitting portion
  • a first connecting line is formed between the first reference point and the second reference point
  • a second connecting line is formed between the second reference point and the third reference point
  • the length of the first connecting line is between 11 and 19 mm
  • the angle between the first connecting line and the second connecting line is between 20° and 65°
  • the length of the second connecting line is between 10.5 and 18.4 mm
  • the inner contour between the second reference point and the third reference point is located outside the second connecting line.
  • the first maximum distance is between 1.5 and 3.7 mm
  • the ratio of the distance from the intersection of the perpendicular line corresponding to the first maximum distance and the second connecting line to the second reference point to the length of the second connecting line is between 0.2 and 0.7.
  • the inner contour also has a fourth reference point located on the side of the second reference point toward the abutment portion, a third line is formed between the second reference point and the fourth reference point, the angle between the first line and the third line is between 15° and 50°, the length of the third line is between 6.6 and 8.6 mm, and the inner contour between the second reference point and the fourth reference point is located outside the third line.
  • an arc-to-chord ratio of the inner contour between the second reference point and the fourth reference point is between 1.10 and 1.46.
  • the second maximum distance is between 1.05 and 3.49 mm
  • the ratio of the distance from the intersection of the perpendicular line corresponding to the second maximum distance and the third line to the second reference point to the length of the third line is between 0.26 and 0.61.
  • the curvature radius of the inner contour is set to gradually increase and then gradually decrease and then gradually increase toward the sound-emitting part and the abutting part respectively with the second reference point as the starting point
  • the third reference point and the fourth reference point are the minimum points of the curvature radius
  • the straight-line distance between the second reference point and other points of the inner contour is set to gradually increase and then gradually decrease toward the sound-emitting part and the abutting part respectively with the second reference point as the starting point
  • the third reference point and the fourth reference point are the maximum points of the straight-line distance.
  • an arc-chord ratio between two points on both sides of the third reference point and 3 mm away from the third reference point is between 1.26 and 1.44.
  • the reference cross section is the earhook symmetry plane of the earhook.
  • the beneficial effect of the present application is that: by the above method, the length of the first connecting line is set within the range of 11 to 19 mm, based on which it can effectively ensure that the sound-emitting part and the abutting part can fully clamp the helix under the action of the ear hook, thereby effectively improving the fixing effect between the earphone and the ear.
  • the angle between the first connecting line and the second connecting line is between 20° and 65°, based on which it can better ensure that the inner contour of the earphone can bypass the helix as much as possible, reduce the contact between the inner contour of the earphone and the helix, thereby effectively improving the wearing comfort and wearing stability of the earphone.
  • Fig. 9 is another schematic diagram of a reference section b-b of the earphone shown in Fig. 2 in a natural state where the abutting portion and the sound-emitting portion are not abutting against each other;
  • FIG11 is another schematic diagram of a reference section b-b of the earphone shown in FIG2 in a natural state where the abutting portion and the sound-emitting portion are not abutting against each other;
  • Fig. 13 is another schematic diagram of a reference section b-b of the earphone shown in Fig. 2 in a natural state where the abutting portion and the sound-emitting portion are not abutting against each other;
  • FIG. 14 is a schematic structural diagram of the earphone shown in FIG. 1 , illustrating an elastic metal sheet.
  • 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, for the sake of convenience of description and in conjunction with FIG1 , the external auditory canal 101 specifically refers to its entrance away from the eardrum (i.e., the ear hole) in this application unless otherwise specified.
  • 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, the cymba concha E13 and the triangular fossa E14, that is, these parts are respectively concave toward the back of the ear in the direction close to the user's head, and the tragus E19 is convex toward the front of the ear in the direction away from the user's head.
  • the front of the ear is a concept relative to the "back of the ear”
  • the former refers to the side of the ear away from the head, such as Figure 1
  • the latter refers to the side of the ear facing the head, and they are both for the user's ear.
  • a simulator containing a head and its (left and right) ears can be made based on ANSI: S3.36, S3.25 and IEC: 60318-7 standards as a reference for wearing an acoustic device, thereby presenting the scenario of most users wearing the acoustic device normally.
  • the ear used as a reference may have the following relevant characteristics: the size of the projection of the auricle on the sagittal plane in the vertical axis direction may be in the range of 49.5mm-74.3mm, and the size of the projection of the auricle on the sagittal plane in the sagittal axis direction may be in the range of 36.6mm-55mm.
  • descriptions such as “wearing by the wearer”, “in a wearing state” and “in a wearing state” may refer to the acoustic device described in the present application being worn on the ear of the aforementioned simulator.
  • the structure, shape, size, thickness, etc. of one or more parts of the ear EAR may have certain differences.
  • the acoustic device may be designed differently. These differentiated designs may be manifested in that the characteristic parameters of one or more structures in the acoustic device (for example, the sound-emitting part 210, ear hook 230, etc. described below) may have different ranges of values to adapt to different ears.
  • the sagittal plane refers to a plane perpendicular to the ground along the front-to-back direction of the body, which divides the human body into left and right parts
  • the coronal plane refers to a plane perpendicular to the ground along the left-to-right direction of the body, which divides the human body into front and back parts
  • the horizontal plane refers to a plane parallel to the ground along the up-down direction of the body, which divides the human body into upper and lower parts.
  • the sagittal axis refers to an axis along the front-to-back direction of the body and perpendicular to the coronal plane
  • the coronal axis refers to an axis along the left-to-right direction of the body and perpendicular to the sagittal plane
  • the vertical axis refers to an axis along the up-down direction of the body and perpendicular to the horizontal plane.
  • the “front side of the ear” described in the present application is a concept relative to the “back side of the ear”, the former refers to the side of the ear away from the head, and the latter refers to the side of the ear facing the head, and they are both for the user's ear.
  • FIG. 1 a schematic diagram of the front side contour of the ear shown in Figure 1 can be obtained.
  • the three directions of X, Y and Z can be simply regarded as the human body's coronal axis, human body's sagittal axis and human body's vertical axis, respectively;
  • the three planes of XY, XZ and YZ can be simply regarded as the human body's horizontal plane, human body's coronal plane and human body's sagittal plane, respectively.
  • an earphone 200 which is an ear clip earphone, wherein the earphone 200 includes a sound-generating portion 210 inserted into the concha cavity E12 of the wearer, an abutting portion 220 for abutting the back of the wearer's ear, and an ear hook 230 connected to the sound-generating portion 210 and the abutting portion 220.
  • the sound-generating portion 210 is a sound playing device, which is used to convert an electrical signal into an acoustic signal and play it to the wearer, and is located in the concha cavity E12 when worn.
  • the abutting portion 220 forms a clamping state with the sound-generating portion 210, so that the entire earphone 200 is clamped and worn on the user's helix E17.
  • the abutting portion 220 can be used as a battery compartment for installing batteries or other components.
  • the abutting portion 220 can also be used instead of a battery compartment, and the battery can be installed on the sound-generating portion 210.
  • the ear hook 230 is a component that provides clamping force. The two ends of the ear hook 230 are respectively connected to the sound-emitting part 210 and the abutment part 220.
  • the ear hook 230 When worn, the ear hook 230 bypasses the auricle E17 so that the sound-emitting part 210 and the abutment part 220 are located on both sides of the human ear along the coronal axis of the human body, and the sound-emitting part 210 extends to the concha cavity E12 to transmit the sound to the ear canal.
  • the earphone 200 has a reference section b-b, which is arranged along the length direction of the ear hook 230, wherein the reference section b-b is substantially parallel to the horizontal plane of the human body in the wearing state.
  • the ear hook 230, the sound emitting portion 210 and the abutting portion 220 have an inner contour 300, wherein the inner contour 300 includes at least reference points C, E, H and L, and the earphone 200 also includes a reference point O.
  • reference point C is a reference point on the inner contour 300 that has a special positional relationship with the helix E17. Specifically, in the wearing state, reference point C is located on the ear hook 230 and corresponds to the reference point of the edge 1071 of the helix E17, and reference point C is the turning point of the inner contour 300.
  • the inner contour 300 is a contour line that protrudes away from the helix E17 as a whole, wherein the radius of curvature of at least a portion of the inner contour 300 located at the edge 1071 first gradually increases, then gradually decreases, and then gradually increases again, starting from the reference point C toward the sound-emitting portion 210 and the abutting portion 220.
  • the reference point O is a reference point with a special positional relationship between the sound-emitting part 210 and the abutting part 220.
  • the midpoint of the shortest line Q1Q2 between the outer wall surface of the sound-emitting part 210 and the outer wall surface of the abutting part 220 is the reference point O.
  • a tangent QL1 exists at a reference point Q1 of the outer wall surface of the sound-emitting part 210 (wherein the tangent QL1 is a line passing through the reference point Q1 and tangent to the outer wall surface of the sound-emitting part 210), and a tangent QL2 exists at a reference point Q2 of the outer wall surface of the abutting part 220 (wherein the tangent QL2 is a line passing through the reference point Q2 and tangent to the outer wall surface of the abutting part 220), and the tangents QL1 and QL2 are parallel to each other, wherein the shortest connecting line Q1Q2 is the normal line of the outer wall surface of the sound-emitting part 210 at the reference point Q1, and is
  • the reference point O should be the midpoint of the arc Q3Q4 formed by the abutting area between the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220.
  • the reference point C can be directly positioned through the positional relationship between the reference point C and the edge 1071 of the helix E17, so as to use the reference point C as the first reference point O, and further use the reference point C to define the reference point E, reference point H, reference point L and reference point O respectively, and use the reference point E, reference point H, reference point L and reference point O as the second reference point C, the third reference point E, the fourth reference point H and the fifth reference point L respectively, so as to define the overall structure of the earphone 200. Based on this, the overall structure of the earphone 200 can be more matched with the physiological structure of the helix E17 and the concha cavity E12, thereby effectively improving the wearing comfort of the earphone 200.
  • reference point C is also a reference point of a special positional relationship between reference point O and inner contour 300, that is, reference point C is the reference point with the farthest distance from inner contour 300 to reference point O. Therefore, reference point C can be positioned by reference point O, that is, reference point O is used as the first reference point O, and then reference point C is determined by the special positional relationship between reference point O and inner contour 300, and reference point C is used as the second reference point C.
  • reference point E, reference point H and reference point L are defined respectively by reference point O and reference point C, and reference point E, reference point H and reference point L are used as the third reference point E, the fourth reference point H and the fifth reference point L respectively, so as to define the overall structure of the earphone 200. Based on this, the overall structure of the earphone 200 can be more matched with the physiological structure of the helix E17 and the concha cavity E12, thereby effectively improving the wearing comfort of the earphone 200.
  • 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, and can be selected as 17 mm or 18 mm.
  • the length of line CH is between 6.5 and 9.0 mm, and can be selected as 6.8 mm, 7.3 mm, 7.8 mm, 8.1 mm, 8.5 mm or 8.8 mm.
  • the angle R1 between line CE and line CH is between 72° and 88°, and can be selected as 75°, 78°, 81° or 85°.
  • the inner contour 300 between reference point C and reference point E is located on the outside 310 of line CE
  • the inner contour 300 between reference point C and reference point H is located on the outside 320 of line CH.
  • the length of line CE may be between 10.5 and 18.4 mm or 16.5 and 18 mm, etc., which fall within the range of 16 to 19 mm
  • the length of line CH may be between 6.6 and 8.6 mm or 6.8 and 8 mm, etc., which fall within the range of 6.5 to 9.0 mm.
  • reference point E is a reference point on the side of reference point C facing the sound-emitting portion 210, and it forms a line CE with reference point C
  • the inner contour 300 between reference point C and reference point E is located on the outer side 310 of line CE
  • Reference point H is a reference point on the side of reference point C facing the abutment portion 220, and it forms a line CH with reference point C
  • the inner contour 300 between reference point C and reference point H is located on the outer side 320 of line CH.
  • line CE is also called the first line or the second line
  • line CH is also called the second line or the third line.
  • the inner contour 300 of the earphone 200 will not be able to bypass the helix E17 as much as possible. If the angle R1 is too large, the overall volume of the earphone 200 will be increased, making the overall mass of the earphone 200 larger, resulting in instability in wearing the earphone 200.
  • the angle R1 between the line CE and the line CH can be set to 80°.
  • the sound-emitting part 210 cannot be inserted into the concha cavity E12, affecting the sound quality of the earphone 200, or the inner contour 300 of the earphone 200, especially the position at the reference point C, contacts the helix E17 after the sound-emitting part 210 is inserted into the concha cavity E12. If the length of the connection line CE is too large, the overall structural volume of the earphone 200 will be increased, making the overall mass of the earphone 200 larger, resulting in unstable wearing of the earphone 200.
  • connection line CE within the range of 16 to 19 mm or 10.5 to 18.4 mm can effectively reduce the overall volume of the earphone 200 while ensuring that the sound-emitting part 210 can stably insert into the concha cavity E12 and ensure that the inner contour 300 and the sound-emitting part 210 do not contact the helix E17, thereby effectively improving the wearing comfort of the earphone 200 and the sound transmission quality of the earphone 200, and effectively improving the wearing stability of the earphone 200.
  • the length of the connection line CH is set to 17.13 mm, and the length of the connection line CH is set to 7.59 mm.
  • the curved shape of the inner contour 300 matches the physiological structure of the helix E17 and the concha cavity E12. Based on this, the inner contour 300 can bypass the helix E17 as much as possible without contacting the helix E17, and can also effectively reduce the overall volume of the earphone 200.
  • the radius of curvature of the inner contour 300 is set to gradually increase, then gradually decrease, and then gradually increase from the reference point C as the starting point toward the sound-emitting portion 210 and the abutting portion 220, respectively, and the reference point E and the reference point H are the minimum points of the radius of curvature.
  • the radius of curvature first gradually increases, then gradually decreases, and then gradually increases from the reference point C as the starting point toward the sound-emitting portion 210 and the abutting portion 220, respectively, based on which the inner contour 300 is more compatible with the physiological structure of the helix E17 and the cavum concha E12, thereby effectively reducing the overall volume of the earphone 200, thereby improving the wearing stability of the earphone 200, and when the earphone 200 is in the wearing state, it can also effectively prevent the inner contour 300 from contacting the helix E17, thereby effectively improving the wearing comfort of the earphone 200.
  • reference point E and reference point H are two reference points of reference point C toward the sound-emitting part 210 and toward the abutment part 220 respectively, wherein reference point E and reference point H are set as the minimum points of the curvature radius of the inner contour 300, and reference point E is the first minimum point of the curvature radius after the inner contour 300 extends from reference point C to the sound-emitting part 210, and reference point H is the first minimum point of the curvature radius after the inner contour 300 extends from reference point C to the abutment part 220.
  • the sound-emitting part 210 and the abutment part 220 can fully abut against the two sides of the ear clip cavity respectively, thereby effectively improving the wearing stability of the earphone 200.
  • the sound-emitting part 210 and the abutment part 220 can fully abut against the two sides of the ear clip cavity along the sagittal axis of the human body, thereby effectively improving the wearing stability of the earphone 200.
  • the arc-chord ratio of the inner contour 300 between the reference point C and the reference point E is between 1.02 and 1.20, and can be 1.05, 1.08, 1.12, 1.16 or 1.18.
  • the arc-chord ratio of the inner contour 300 between the reference point C and the reference point E can also be between 1.02 and 1.16, or 1.02 and 1.1, etc., which fall within the range of 1.02 to 1.20.
  • the arc-chord ratio of the inner contour 300 between the reference point C and the reference point E specifically refers to the ratio of the actual length of the inner contour 300 between the reference point C and the reference point E to the length of the connecting line CE.
  • the inner contour 300 is a curved arc-shaped curve contour
  • the arc-chord ratio of the inner contour 300 between the reference point C and the reference point E is the ratio of the arc length of the inner contour 300 between the reference point C and the reference point E to the length of the connecting line CE.
  • the inner contour 300 between the reference point C and the reference point E is a continuous arc protruding away from the connecting line CE.
  • the inner contour 300 may not be set as a curve, and it may also be a plurality of straight lines.
  • the inner contour 300 between the reference point C and the reference point E will be relatively straight, which is not conducive to the inner contour 300 between the reference point C and the reference point E to bypass the helix E17. If the arc-chord ratio of the inner contour 300 between the reference point C and the reference point E is too large, the inner contour 300 between the reference point C and the reference point E will be too curved, increasing the overall volume of the earphone 200.
  • the arc-chord ratio of the inner contour 300 between the reference point C and the reference point E is set within the range of 1.02 to 1.20 or 1.02 to 1.16, so that the inner contour 300 between the reference point C and the reference point E can bypass the helix E17 as much as possible without contacting the helix E17, thereby effectively improving the wearing comfort of the earphone 200 and effectively improving the wearing stability of the earphone 200.
  • the arc-chord ratio between the reference point C and the reference point E can be set to 1.1.
  • the first maximum distance L1 is between 1.5 and 3.7 mm, and can be 2.3, 2.6, 2.9, 3.2 or 3.6 mm.
  • the ratio of the distance from the intersection of the perpendicular line corresponding to the first maximum distance L1 and the line CE to the reference point C to the length of the first line is between 0.2 and 0.7, and can be 0.3, 0.4 or 0.52.
  • the distance between the line CE and the inner contour 300 in the reference plane refers to a vertical line segment that intersects the line CE and the inner contour 300 and is perpendicular to the line CE.
  • the maximum distance between the connecting line CE and the inner contour 300 between the reference points C and E is also the first maximum distance L1.
  • the size of the first maximum distance L1 cannot be too small or too large. If it is too small, the arc-chord ratio of the inner contour 300 between the reference points C and E will be reduced, resulting in the inner contour 300 between the reference points C and E failing to fully bypass the helix E17, affecting the wearing comfort of the earphone 200.
  • the arc-chord ratio of the inner contour 300 between the reference points C and E will be increased, resulting in the inner contour 300 between the reference points C and E being too curved, increasing the overall volume of the earphone 200. Therefore, setting the first maximum distance L1 within the range of 1.5 to 3.7 mm can effectively prevent the inner contour 300 between the reference points C and E from contacting the helix E17, thereby effectively improving the wearing comfort of the earphone 200, and at the same time, effectively improving the wearing stability of the earphone 200.
  • the ratio of the distance from the intersection of the vertical line corresponding to the first maximum distance L1 and the line CE to the reference point C to the length of the first line is set within the range of 0.2 to 0.7, so that the relative position relationship between the position where the first maximum distance L1 appears between the inner contour 300 and the line CE and the line CE is more reasonable, thereby ensuring that the inner contour 300 between the reference point C and the reference point E does not contact the auricle E17, thereby improving the wearing comfort of the earphone 200 and effectively improving the wearing stability of the earphone 200.
  • the first maximum distance L1 is 2.88 mm
  • the ratio of the distance from the intersection of the vertical line corresponding to the first maximum distance L1 and the line CE to the reference point C to the length of the first line is approximately 0.45.
  • the first maximum distance L1 is between 2.1 and 3.7 mm, and can be 2.3, 2.6, 2.9, 3.2 or 3.6 mm.
  • the ratio of the distance from the intersection of the perpendicular line corresponding to the first maximum distance L1 and the line CE to the reference point C to the length of the first line is between 0.2 and 0.55, and can be 0.3, 0.4 or 0.52.
  • the arc-chord ratio of the inner contour 300 between the reference point C and the reference point H is between 1.05 and 1.23, for example, 1.07, 1.1, 1.15, etc.
  • the arc-chord ratio of the inner contour 300 between the reference point C and the reference point H may also be between 1.10 and 1.46, etc.
  • the arc-chord ratio of the inner contour 300 between the reference point C and the reference point H may also be between 1.10 and 1.23, etc.
  • the arc-chord ratio of the inner contour 300 between the reference point C and the reference point H specifically refers to the ratio of the actual length of the inner contour 300 between the reference point C and the reference point H to the length of the connecting line CH.
  • the inner contour 300 is a curved arc-shaped curve contour
  • the arc-chord ratio of the inner contour 300 between the reference point C and the reference point H is the ratio of the arc length of the inner contour 300 between the reference point C and the reference point H to the length of the connecting line CH.
  • the inner contour 300 between the reference point C and the reference point H is a continuous arc protruding away from the connecting line CH.
  • the inner contour 300 may not be set as a curve, and it may also be a plurality of straight lines.
  • the inner contour 300 between the reference point C and the reference point H will be relatively straight, which is not conducive to the inner contour 300 between the reference point C and the reference point H to bypass the helix E17. If the arc-chord ratio of the inner contour 300 between the reference point C and the reference point H is too large, it will cause the inner contour 300 between the reference point C and the reference point H to be too curved, increasing the overall volume of the earphone 200.
  • the arc-chord ratio of the inner contour 300 between the reference point C and the reference point E is set within the range of 1.10 to 1.46, so that the inner contour 300 between the reference point C and the reference point H can bypass the helix E17 as much as possible without contacting the helix E17, thereby effectively improving the wearing comfort of the earphone 200 while also effectively improving the wearing stability of the earphone 200. Furthermore, by setting the arc-chord ratio of the inner contour 300 between the reference point C and the reference point E within a range of 1.10 to 1.46, the inner contour 300 can conform to the contour of the ear of most people, thereby effectively improving the applicability of the earphone 200. For example, in some embodiments, the arc-chord ratio of the inner contour 300 between the reference point C and the reference point E is set to 1.19.
  • the second maximum distance L2 is between 1.05 and 2.0 mm, and can be selected as 1.08, 1.12, 1.3, 1.34, 1.48, 1.72, 1.86 or 1.91.
  • the ratio of the distance from the intersection of the perpendicular line corresponding to the second maximum distance L2 and the second connecting line to the reference point C to the length of the connecting line CH is between 0.4 and 0.8, and can be selected as 0.43, 0.49, 0.56, 0.63, 0.66, 0.71 or 0.77.
  • the second maximum distance L2 may be between 1.5 and 2.0 mm or between 1.05 and 3.49 mm, etc., in the range of 1 to 3.5 mm.
  • the ratio of the distance from the intersection of the vertical line corresponding to the second maximum distance L2 and the second line to the reference point C to the length of the line CH may be between 0.26 and 0.61, etc., in the range of 0.4 to 0.8.
  • the distance between the connecting line CH and the inner contour 300 in the reference plane refers to a vertical line segment respectively intersecting the connecting line CH and the inner contour 300 and being perpendicular to the connecting line CH.
  • the maximum distance between the connecting line CH and the inner contour 300 between the reference point C and the reference point H is also the second maximum distance L2.
  • the size of the second maximum distance L2 cannot be too small or too large. If it is too small, the arc-chord ratio of the inner contour 300 between the reference point C and the reference point H will be reduced, resulting in the inner contour 300 between the reference point C and the reference point H being unable to fully bypass the helix E17, affecting the wearing comfort of the earphone 200.
  • the arc-chord ratio of the inner contour 300 between the reference point C and the reference point H will be increased, resulting in the inner contour 300 between the reference point C and the reference point H being too curved, which is easy to squeeze the helix E17, affecting the wearing comfort of the earphone 200. Therefore, setting the second maximum distance L2 within the range of 1.5 to 2.0 mm or 1.05 to 3.49 mm can effectively prevent the inner contour 300 between the reference point C and the reference point H from contacting the helix E17, so as to prevent the earphone 200 from squeezing the helix E17, thereby effectively improving the wearing comfort of the earphone 200.
  • the ratio of the distance from the intersection of the vertical line corresponding to the second maximum distance L2 and the line CH to the reference point C to the length of the line CH is set between 0.4 and 0.8 or 0.26 and 0.61, based on which the relative position relationship between the position where the first maximum distance L1 appears between the inner contour 300 and the line CE and the line CE is more reasonable, so as to ensure that the inner contour 300 between the reference point C and the reference point E does not contact the helix E17, thereby improving the wearing comfort of the earphone 200 and effectively improving the wearing stability of the earphone 200.
  • the second maximum distance L2 is set to 1.8 mm, and the ratio of the distance from the intersection of the vertical line corresponding to the second maximum distance L2 and the second line to the reference point C to the length of the line CH is set to 0.51.
  • the arc-chord ratio between two points on both sides of the reference point C and 5 mm away from the reference point C is between 1.03 and 1.22, and may be 1.06, 1.08, 1.1, 1.2, etc.
  • the inner contour 300 between two points on both sides of the reference point C and 5 mm away from the reference point C is a continuous arc protruding away from the sound-emitting portion 210 and the abutting portion 220 .
  • the arc-chord ratio between two points on both sides of the reference point C and 5 mm away from the reference point C is between 1.03 and 1.12, and may be 1.06, 1.08, 1.1, etc.
  • the inner contour 300 between two points on both sides of the reference point C and 5 mm away from the reference point C is a continuous arc protruding away from the sound-emitting portion 210 and the abutting portion 220 .
  • the reference point C is the point on the inner contour 300 corresponding to the edge 1071 of the helix E17.
  • the area of the inner contour 300 near the reference point C is one of the areas where the earphone 200 is likely to come into contact with the helix E17. Therefore, if the arc-to-magnitude ratio of the inner contour 300 in this area is too small, the overall volume of the earphone 200 will be increased, affecting the wearing stability of the earphone 200. If it is too large, the matching between the inner contour 300 and the helix E17 will be affected, making the earphone 200 likely to come into contact or be squeezed with the helix E17, thereby affecting the wearing comfort of the earphone 200.
  • the inner contour 300 between two points on both sides of the reference point C and 5 mm away from the reference point C is the main area where the earphone 200 is likely to contact the helix E17. Therefore, the arc-chord ratio between two points on both sides of the reference point C and 5 mm away from the reference point C is set to a value within the above numerical range, so that the inner contour 300 of the earphone 200 can better fit the contour of the helix E17, effectively preventing the earphone 200 from contacting or squeezing the helix E17 when the earphone 200 is worn, thereby effectively improving the wearing comfort of the earphone 200 and the wearing stability of the earphone 200.
  • the arc-chord ratio between two points on both sides of the reference point C and 5 mm away from the reference point C is between 1.03 and 1.22, so that the arc of the inner contour 300 between two points on both sides of the reference point C and 5 mm away from the reference point C is moderate, so that the deformation distribution of the ear hook is relatively uniform during wearing, and stress concentration is not likely to occur, thereby effectively improving the stability and service life of the earphone 200.
  • a line CL is formed between reference point C and reference point L, and line CL is located between line CE and line CH, and the length of line CL is between 9.5 and 17 mm, and can be 13.6, 14.1, 15.2, 16.3 or 16.6 mm.
  • An angle R2 between line CL and line CE is between 20° and 65°, and can be 16°, 16.6°, 18.3°, 19°, 19.5°, 21°, 24°, 25.5°, 26°, 26.8°, 30, 40, 45 or 50°.
  • the line CL is also called the third line or the fourth line.
  • the reference point L is a special point on the sound-emitting part 210 that is closest to the reference point C. Therefore, the angle between the line CL and the line CH determines to a certain extent whether the sound-emitting part 210 can be fully placed in the concha cavity E12.
  • the length of the line CL determines to a certain extent whether the inner contour 300 of the earphone 200 can still not contact the helix E17 when the sound-emitting part 210 is fully placed in the concha cavity E12. Therefore, the length of the line CL is set between 9.5 and 17 mm, and the angle R2 between the line CL and the line CE is set between 20° and 65°.
  • At least part of the section between reference point E and reference point L is configured to be recessed toward the inside of the sound-emitting portion 210, and the arc-chord ratio of the section is between 1.02 and 1.12, and can be 1.04, 1.07, 1.1 or 1.11.
  • the sound-emitting portion 210 is provided with a pressure relief hole 330 located in the section.
  • the inner contour 300 of the recessed section between reference point E and reference point L toward the inside of the sound-emitting portion 210 should be a continuous arc recessed toward the inside of the sound-emitting portion 210.
  • reference point P1 and reference point P2 there are two points on both sides of the reference point E and 3 mm away from the reference point E, namely, reference point P1 and reference point P2, wherein the portion of the inner contour 300 between the reference point P1 and the reference point P2 is an arc recessed toward the inside of the sound-emitting part 210, and the arc-chord ratio of the inner contour 300 between the reference point P1 and the reference point P2 is between 1.26 and 1.44 or 1.29 and 1.40.
  • the length of the line CO is between 15 and 20 mm, and can be selected as 15.3, 15.8, 16.1, 16.5, 17, 17.7, 18.3, 18.6, 19.2 or 19.5.
  • the angle R3 between the CO line and the line CL is between 9° and 33°, and can be selected as 12°, 15°, 17°, 23° or 30°.
  • the length of the line CO can also be set in a value range of 11 to 19 mm, etc., which is in the range of 15 to 20 mm.
  • the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220 do not contact each other, so there is a shortest line between the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220, and the length of the shortest line is not 0.
  • the reference point O is the midpoint of the shortest line Q1Q2.
  • the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220 are in contact with each other, so the length of the shortest line between the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220 is nearly 0.
  • the reference point O should be the midpoint of the arc Q3Q4 formed by the abutment area between the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220.
  • the length of the connection line CO is set within the range of 15 to 20 mm or 11 to 19 mm, and the angle R3 between the connection line CO and the connection line CL is set within the range of 9° to 33°, based on which it can effectively ensure that the sound-emitting portion 210 and the abutting portion 220 can fully clamp the helix E17 under the action of the ear hook 230, thereby effectively improving the fixing effect between the earphone 200 and the ear.
  • the length of the connection line CO is set at 17.35 mm
  • the angle R3 between the connection line CO and the connection line CL is set at 14°.
  • the angle R4 between the line CO and the line CE is between 20° and 65°, and can be 17°, 19°, 22°, 24°, 30° or 45°. Based on this, it can better ensure that the inner contour 300 of the earphone 200 can bypass the helix E17 as much as possible, reduce the contact between the inner contour 300 of the earphone 200 and the helix E17, and improve the inner contour 300 to match the physiological structure of the helix E17 and the concha cavity E12, so as to reduce the overall volume of the earphone 200, thereby effectively improving the wearing comfort and wearing stability of the earphone 200.
  • the angle R4 between the line CO and the line CE can be set to 21°.
  • the angle R4 between the line CO and the line CE is between 15° and 27°, and may be 17°, 19°, 22°, 24° or 26°. Based on this, it can better ensure that the inner contour 300 of the earphone 200 can bypass the helix E17 as much as possible, reduce the contact between the inner contour 300 of the earphone 200 and the helix E17, and improve the inner contour 300 to match the physiological structure of the helix E17 and the concha cavity E12, so as to reduce the overall volume of the earphone 200, thereby effectively improving the wearing comfort and wearing stability of the earphone 200.
  • the angle R4 between the connection line CO and the connection line CH is between 15° and 50°, based on which it can better ensure that the inner contour 300 of the earphone 200 can bypass the helix E17 as much as possible, reduce the contact between the inner contour 300 of the earphone 200 and the helix E17, and improve the inner contour 300 to match the physiological structure of the helix E17 and the concha cavity E12, so as to reduce the overall volume of the earphone 200, thereby effectively improving the wearing comfort and wearing stability of the earphone 200.
  • the angle R4 between the connection line CO and the connection line CH can be set to 43°.
  • the angle R4 between the line CO and the line CH is between 25° and 50°, thereby better ensuring that the inner contour 300 of the earphone 200 can bypass the helix E17 as much as possible, thereby reducing the contact between the inner contour 300 of the earphone 200 and the helix E17, and improving the inner contour 300 to match the physiological structure of the helix E17 and the concha cavity E12, so as to reduce the overall volume of the earphone 200, thereby effectively improving the wearing comfort and wearing stability of the earphone 200.
  • the sound-emitting portion 210 has a reference point J, and a line CJ is formed between the reference point C and the reference point J.
  • the line CJ is tangent to the sound-emitting portion 210 and is between the line CO and the line CH.
  • the length of the line CJ is between 16 and 23 mm, and can be selected as 17, 17.6, 18, 20 or 22 mm.
  • the angle R6 between the CJ line and the CL line is between 1° and 21°, and can be selected as 13°, 15°, 17°, 18.4° or 19°.
  • the length of the line CJ can be set in a value range of 17 to 23 mm, etc., which is within the range of 16 to 23 mm.
  • the angle R7 between the connection line CJ and the connection line CO is between 1° and 21°, and can be 13°, 17°, 18.5°, or 20°. Based on this, the contact area between the sound-emitting part 210 and the concha cavity E12 can be effectively increased, thereby effectively alleviating the pressure pain on the ear when the earphone 200 is worn, thereby effectively improving the wearing comfort of the earphone 200.
  • the angle R7 between the connection line CJ and the connection line CO can be set to 16°.
  • the angle R7 between the line CJ and the line CO is between 11° and 21°, and may be 13°, 17°, 18.5° or 20°. Based on this, the contact area between the sound-emitting part 210 and the concha cavity E12 can be effectively increased, thereby effectively alleviating the pain caused by the earphone 200 when worn, thereby effectively improving the wearing comfort of the earphone 200.
  • the reference point K When the earphone 200 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 200 will be affected. Therefore, the length of the connection line CK is set to be between 24 and 30 mm or 25 and 30 mm, and the angle R8 between the connection line CK and the connection line CE is set to be between 13° and 25°.
  • the length of the connection line CK can be set to 27.7 mm, and the angle R8 between the connection line CK and the connection line CE can be set to 20°.
  • the angle R9 between the line CK and the line CO is between 10° and 26°, and can be 13°, 15°, 17° or 18°. Based on this setting, when the sound-emitting part 210 is extended into the concha cavity E12, the area near the reference point K on the sound-emitting part 210 maintains a relatively moderate distance from the ear hole, thereby effectively preventing the sound-emitting part 210 from blocking the ear hole and effectively improving the sound transmission effect of the earphone 200.
  • the angle R9 between the line CK and the line CO can be set to 15°.
  • the angle R9 between the line CK and the line CO is between 10° and 20°, and may be 13°, 15°, 17° or 18°. Based on this configuration, when the sound-emitting portion 210 is inserted into the concha cavity E12, the area of the sound-emitting portion 210 near the reference point K maintains a relatively moderate distance from the ear hole, thereby effectively preventing the sound-emitting portion 210 from blocking the ear hole and effectively improving the sound transmission effect of the earphone 200.
  • the arc-chord ratio of the outer wall surface of the sound-emitting portion 210 between the reference point L and the reference point K and toward the side of the abutment portion 220 is between 1.4 and 1.7, and can be optionally 1.5, 1.6 or 1.65.
  • the sound-emitting portion 210 is more spherical toward the side of the abutment portion 220.
  • the outer wall surface of the sound-emitting portion 210 is a continuous arc-shaped surface convex toward the side of the abutment portion.
  • the arc-chord ratio of the outer wall surface of the sound-emitting portion 210 can also be set in a value range of 1.5 to 1.67, which is within the range of 1.4 to 1.7.
  • the arc-chord ratio of the outer wall surface of the sound-emitting portion 210 between the reference point L and the reference point K and toward the side of the abutment portion 220 can be set to 1.64.
  • the sound-emitting part 210 has a reference point G close to the tragus E19, a line CG is formed between the reference point C and the reference point G, the line CG is located between the line CE and the line CO, and the angle R10 between the CG line and the line CO is between 20° and 25°, which can be 21°, 23°, 24° or 24.5°.
  • the length of the CG line is between 23 and 31 mm, which can be 25, 27, 28 or 30 mm.
  • reference point G is the reference point of the sound-emitting part 210.
  • reference point G is also called the eighth reference point G
  • line CG is also called the seventh line.
  • the angle R10 between the CG line and the line CO can be set to 18°, and the length of the CG line can be set to 27.12 mm, and the angle R10 between the CG line and the line CO can be set to 23°.
  • the shortest connecting line Q1Q2 between the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220 has an extension line Z4 extending away from the abutting portion 220 or toward the abutting portion 220, and the intersection of the extension line Z4 and the outer wall surface of the sound-emitting portion 210 away from the abutting portion 220 is the reference point G.
  • the abutment portion 220 has a reference point D farthest from the reference point C, and a line CD is formed between the reference point C and the reference point D, and the line CD is located between the line CE and the line CH, and the length of the line CD is between 16 and 25 mm, which can be 18, 17, 19.5, 21, 23 or 24 mm.
  • the angle R11 between the line CD and the line CH is between 15° and 26°, which can be 16°, 18°, 21°, 23° or 24°.
  • the length of the line CD can be between 16 and 24 mm, etc., which is in the range of 16 to 25 mm.
  • reference point D is the reference point on the abutting portion 220 that is farthest from reference point C.
  • reference point D is the reference point of the abutting portion 220 that is closest to the skull part 400 on the back side of the helix E17.
  • the abutting portion 220 and the skull part 400 on the back side of the helix E17 should be avoided as much as possible. Therefore, the length of the connecting line CD is set within the range of 16 to 24 mm or 16 to 25 mm, and the angle R11 between the connecting line CD and the connecting line CH is set within the range of 15° to 26°.
  • the part of the abutting portion 220 close to the reference point D can be effectively prevented from contacting or abutting with the skull part 400 on the back side of the helix E17, thereby effectively improving the wearing comfort of the earphone 200.
  • the length of the connecting line CD is set to 20.65 mm
  • the angle R11 between the connecting line CD and the connecting line CH is set to 22° or 19°.
  • connection line CD is set within the range of 16 to 24 mm or 16 to 25 mm
  • angle R11 between the connection line CD and the connection line CH is set within the range of 15° to 26°, thereby effectively improving the applicability of the earphone 200.
  • the wearing state of the earphone 200 shown in FIG3 when a person with large ears wears the earphone 200, there is a minimum spacing h1 between the abutment portion 220 and the skull portion 400, wherein the minimum spacing h1 is the straight-line distance from the reference point D to the skull portion 400.
  • the wearing state of the earphone 200 shown in FIG4 when a person with small ears wears the earphone 200, there is a minimum spacing h2 between the abutment portion 220 and the skull portion 400, wherein the minimum spacing h2 is the straight-line distance from the reference point D to the skull portion 400.
  • the minimum spacing h2 is smaller than the minimum spacing h1, so the length of the connection line CD is set within the range of 16 to 24 mm or 16 to 25 mm, and the angle R11 between the connection line CD and the connection line CH is set within the range of 15° to 26°. Even when the earphone 200 is used by people with small ears, there is a sufficiently large minimum spacing h2 between the abutting portion 220 and the user's skull area 400, thereby effectively improving the applicability of the earphone 200.
  • the line CD is also located between the line CO and the line CH, and the angle R12 between the line CD and the line CO is between 15° and 25°, and can be 16°, 18°, 19°, 22° or 24°.
  • the part of the abutment portion 220 close to the reference point D can be effectively prevented from contacting or abutting against the skull part 400 on the back side of the helix E17, thereby effectively improving the wearing comfort of the earphone 200.
  • the angle R12 between the line CD and the line CO can be set to 20°.
  • the earphone 200 includes a sound-emitting portion 210, an abutting portion 220, and an ear hook 230.
  • the ear hook 230 connects the sound-emitting portion 210 and the abutting portion 220.
  • the sound-emitting portion 210 and the abutting portion 220 form a clamping state on both sides of the user's auricle E17, and the sound-emitting portion 210 is located in the concha cavity E12.
  • the ear hook 230 includes an elastic metal piece.
  • the elastic metal piece includes an elastic segment 233.
  • the elastic segment 233 is further divided into a first sub-elastic segment 231 and a second sub-elastic segment 232, which are respectively arranged in an arc shape and connected to each other.
  • the first sub-elastic segment 231 is connected to the sound-emitting portion 210
  • the second sub-elastic segment 232 is connected to the abutting portion 220.
  • the curvature radius of at least a portion of the first sub-elastic segment 231 starting from the connection point A and the curvature radius of at least a portion of the second sub-elastic segment 232 starting from the connection point A gradually increase, the length of the first sub-elastic segment 231 is greater than the length of the second sub-elastic segment 232, and at the first end point B of the first sub-elastic segment 231 away from the connection point A, the first sub-elastic segment 231 has a first curvature radius, and at the second end point F of the second sub-elastic segment 232 away from the connection point A, the second sub-elastic segment 232 has a second curvature radius, and the first curvature radius is greater than the second curvature radius.
  • the reference point C parameterized in the above content is located on the normal direction Z1, wherein the normal direction Z1 is the direction colinear with the normal of the ear hook 230 at the connection point A, the first sub-elastic segment 231 is located in the area between the reference point C and the reference point E, and the second sub-elastic segment 232 is located in the area between the reference point C and the reference point H. Therefore, when the earphone 200 is in the wearing state, the connection point A is located at the position corresponding to the edge 1071 of the helix E17.
  • connection point A is the mutation point of the curvature radius of the elastic segment 233
  • the elastic segment 233 is divided into the first sub-elastic segment 231 and the second sub-elastic segment 232 at the connection point A.
  • the first sub-elastic segment 231 and the second sub-elastic segment 232 are arranged in the above manner, so that the elastic segment 233 is more compatible with the physiological structure of the helix E17 and the concha cavity E12, thereby effectively improving the clamping effect of the elastic segment 233, and further effectively improving the wearing stability of the earphone 200.
  • first endpoint B is the endpoint where the first sub-elastic segment 231 is connected to the sound-emitting portion 210
  • second endpoint F is the endpoint where the second sub-elastic segment 232 is connected to the abutting portion 220. Since there is a mutation point in the contour at the connection between the helix E17 and the concha cavity E12, a first curvature radius is set at the first endpoint B and a second curvature radius is set at the second endpoint F, so that the elastic segment 233 is more matched with the physiological structure of the helix E17 and the concha cavity E12, thereby effectively improving the clamping effect of the elastic segment 233, and further effectively improving the wearing stability of the earphone 200.
  • the radius of curvature of the first sub-elastic segment 231 gradually increases in the direction away from the connection point A and between the connection point A and the first endpoint B
  • the radius of curvature of the second sub-elastic segment 232 gradually increases in the direction away from the connection point A and between the connection point A and the second endpoint F.
  • the elastic segment 233 is more matched with the physiological structure of the helix E17 and the concha cavity E12, and the structural complexity of the elastic segment 233 can be effectively reduced, thereby effectively improving the processing efficiency of the elastic segment 233.
  • a line AB is formed between the connection point A and the first endpoint B, the length of the line AB is between 12 and 18 mm, the first sub-elastic segment 231 is located outside the line AB, and a line AF is formed between the connection point A and the second endpoint F, the length of the line AF is between 4 and 9 mm, for example, the length of the line AF can be 5 mm, 6 mm, 7 mm or 8 mm, etc., and the second sub-elastic segment 232 is located outside the line AF.
  • the line AB is also referred to as the first line formed between the connection point A and the first end point B
  • the line AF is also referred to as the second line formed between the connection segment and the second end point F. If the line AB and the line AF are too short, the first sub-elastic segment 231 and the second sub-elastic segment 232 will have a large rigidity, making it difficult for the elastic segment 233 to deform elastically to form a clamping force.
  • the first sub-elastic segment 231 and the second sub-elastic segment 232 will have a small rigidity, resulting in a small clamping force of the elastic segment 233, which is not conducive to the clamping and fixing of the earphone 200.
  • the length of the line AB is set in the range of 12 to 18 mm, and the length of the line AF is set in the range of 4 to 9 mm, based on which the length of the first sub-elastic segment 231 and the length of the second sub-elastic segment 232 can be within a relatively moderate range, so that the elastic segment 233 is easy to form a clamping force, and the clamping force is effectively increased, thereby effectively improving the clamping effect of the elastic segment 233, so as to effectively improve the wearing stability of the earphone 200.
  • the length of line AB is set to 14.94 mm
  • the length of line AF is set to 6.16 mm.
  • the arc-chord ratio of the first sub-elastic segment 231 is between 1.03-1.1, for example, it can be 1.05 or 1.08.
  • the arc-chord ratio of the second sub-elastic segment 232 is between 1.04 and 1.12, specifically, it can be 1.05, 1.065, 1.07 or 1.2. Based on this, the clamping effect of the elastic segment 233 can be further improved to effectively improve the wearing stability of the earphone 200.
  • the contour shape of the first sub-elastic segment 231 in the reference section b-b is a continuous arc convex away from the connecting line AB
  • the contour shape of the second sub-elastic segment 232 in the reference section b-b is a continuous arc convex away from the connecting line AF.
  • the arc-chord ratio of the first sub-elastic segment 231 is set to 1.08
  • the arc-chord ratio of the second sub-elastic segment 232 is set to 1.05.
  • the ear hook 230 has a third radius of curvature, and the third radius of curvature is between 4 and 7 mm, for example, it can be 4.3, 5.1, 6, 6.4 mm, etc.
  • the difference between the first radius of curvature and the third radius of curvature is between 10 and 25 mm, for example, it can be 12, 15, 17, 19, 20, 23 mm, etc.
  • the difference between the second radius of curvature and the third radius of curvature is between 1.5 and 5 mm, based on which the clamping effect of the elastic section 233 can be further improved to further improve the wearing stability of the earphone 200.
  • the third radius of curvature is set to 4.88 mm
  • the difference between the first radius of curvature and the third radius of curvature is 13 mm
  • the difference between the second radius of curvature and the third radius of curvature is set to 3.95 mm.
  • the first sub-elastic segment 231 has a first tangent direction Z2
  • the second sub-elastic segment 232 has a second tangent direction Z3
  • the angle R13 between the first tangent direction Z2 and the second tangent direction Z3 is between 43° and 68°, and can be 45°, 50°, 55°, 63°, or 67°, etc.
  • the overall structure of the elastic segment 233 is more compatible with the physiological structure of the helix E17 and the concha cavity E12, thereby further improving the wearing comfort of the earphone 200 and further improving the clamping effect of the elastic segment 233, so as to further improve the wearing stability of the earphone 200.
  • the angle R13 between the first tangent direction Z2 and the second tangent direction Z3 is set to 53°.
  • the first tangent direction Z2 may also be tangent to the outer contour of the ear hook 230 on the reference section b-b.
  • the first tangent direction Z2 is tangent to the outer contour at a point on the outer contour of the ear hook 230 corresponding to the first end point B (for example, the intersection of the normal passing through the first end point B and the outer contour).
  • the second tangent direction Z3 may also be tangent to the outer contour of the ear hook 230 on the reference section b-b.
  • the second tangent direction Z3 is tangent to the outer contour at a point on the outer contour of the ear hook 230 corresponding to the first end point F (for example, the intersection of the normal passing through the second end point F and the outer contour).
  • the ear hook 230 has a normal direction Z1, and the angle R14 between the first tangent direction Z2 and the normal direction Z1 is between 15°-33°, and can be 17°, 19°, 23°, 25°, 29° or 32°, etc.
  • the angle R15 between the second tangent direction Z3 and the normal direction Z1 is between 24°-35°, and can be 26°, 29°, 31° or 33°.
  • the overall structure of the elastic segment 233 is more compatible with the physiological structure of the helix E17 and the concha cavity E12, thereby further improving the wearing comfort of the earphone 200 and further improving the clamping effect of the elastic segment 233, so as to further improve the wearing stability of the earphone 200.
  • the angle R14 between the first tangent direction Z2 and the normal direction Z1 is set to 27°
  • the angle R15 between the second tangent direction Z3 and the normal direction Z1 is set to 30°.
  • there is a shortest line between the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220, and the angle R16 between the line AO between the midpoint of the shortest line (i.e., the reference point O) and the connection point A and the normal direction Z1 is between 0° and 10°, and can be 0° to 8°, for example, 2°, 4°, 5° or 7°, etc.
  • the overall structure of the elastic segment 233 is more compatible with the physiological structure of the helix E17 and the concha cavity E12, thereby further improving the wearing comfort of the earphone 200 and further improving the clamping effect of the elastic segment 233, so as to further improve the wearing stability of the earphone 200.
  • the angle R16 can be set to 1.08°.
  • the ear hook 230 includes a bistable structure 246, which is disposed on the elastic section 233, and is used to enable the ear hook 230 to have a first stable position and a second stable position.
  • the minimum spacing between the sound-emitting portion 210 and the abutting portion 220 when the ear hook 230 is in the first stable position is greater than the minimum spacing when the ear hook 230 is in the second stable position.
  • the bistable structure 246 is provided on the elastic section 233, and is used to enable the elastic section 233 to maintain a fixed shape in the first stable position and the second stable position, so that the sound-emitting portion 210 and the abutting portion 220 can maintain a corresponding minimum distance when the ear hook 230 is in the corresponding stable position, so as to effectively improve the wearing convenience of the earphone 200.
  • the user can pre-adjust the ear hook 230 to the first stable position, so that the sound-emitting portion 210 and the abutting portion 220 are separated by a sufficiently large distance and maintained.
  • the shape fixing function of the bistable structure 246 is cancelled, so that the ear hook 230 resumes the normal clamping function.
  • the ear hook 230 is automatically or manually adjusted to a stable position where there is a minimum spacing between the sound-emitting portion 210 and the abutting portion 220 but they are not in direct contact, that is, the second stable position.
  • the earphone 200 can effectively prevent the sound-emitting portion 210 and the abutting portion 220 from violently colliding due to the elasticity of the ear hook 230 after the user takes the earphone 200 off the ear, thereby effectively improving the service life of the earphone 200.
  • the earphone 200 is in the first stable position when in the battery box, or the earphone 200 can be pressed by the cover body to be in the first stable position when the battery box cover is closed. In this way, the user only needs to wear it on the ear helix and then press the earphone to be in the second stable position. Only one step is required, which improves the convenience of use.
  • the bistable structure 246 includes a protrusion 245 and abutment 244 connected to the elastic section 233 at intervals, the buttress 244 butts against the protrusion point of the protrusion 245, and the buttress 244 butts against the two sides of the protrusion point to form a first stable position and a second stable position.
  • the two sides of the protrusion point refer to the two sides of the protrusion point along the normal direction Z1.
  • the bistable structure 246 can be arranged at the position of the elastic section 233 corresponding to the reference point C, and the buttress 244 and the protrusion 245 are respectively arranged on the two sides of the position of the elastic section 233 corresponding to the reference point C along the extension direction of the elastic section 233.
  • the bistable structure 246 is located in the area of the ear hook 230 close to the ear helix, which is convenient for user operation, and this position is the main deformation area of the elastic section 233 and the position is relatively centered, so it is not easy to cause stress concentration and fatigue.
  • the sound-emitting portion 210 and the abutting portion 220 abut against each other under the action of the ear hook 230.
  • the sound-emitting portion 210 and the abutting portion 220 may also be configured not to abut against each other, and the details may be referred to the above content, which will not be described in detail herein.
  • the reference section b-b is a symmetry plane of the ear hook 230.
  • the elastic metal piece is an elastic metal sheet 233a, and two ends of the elastic metal sheet 233a that are arranged opposite to each other along the length direction are respectively connected to the sound-emitting part 210 and the abutting part 220, and in the wearing state, the thickness direction of the elastic metal sheet 233a is toward or away from the helix E17, and the symmetry plane of the ear hook 230 divides the elastic metal sheet 233a in the width direction of the elastic metal sheet 233a. Based on this, the elastic deformation trend of the elastic metal sheet 233a is more in line with the physiological structure of the helix E17 and the concha cavity E12, thereby effectively improving the wearing stability and wearing comfort of the earphone 200.
  • the width-to-thickness ratio of the elastic metal sheet 233a is between 8 and 12, and can be 9, 10 or 11. Based on this, setting the width-to-thickness ratio of the elastic metal sheet 233a between 8 and 12 can effectively make the elastic metal sheet 233a have better elasticity, thereby effectively improving the elasticity of the ear hook 230, and further effectively improving the wearing stability and wearing comfort of the earphone 200.

Landscapes

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

Abstract

一种耳机(200)，包括发声部(210)、抵接部(220)和耳挂(230)，耳挂(230)连接发声部(210)和抵接部(220)，在沿耳挂(230)的长度方向设置的参考截面(b-b)内且在自然状态下，发声部(210)的外壁面和抵接部(220)的外壁面之间的最短连线的中点作为第一参考点(O)或发声部(210)的外壁面和抵接部(220)的外壁面之间的接触区域所形成弧形的中点作为第一参考点(O)，耳挂(230)、发声部(210)和抵接部(220)具有一内轮廓，内轮廓具有距离第一参考点(O)最远的第二参考点(C)，内轮廓还具有位于第二参考点(C)朝向发声部(210)一侧的第三参考点(E)，第一参考点(O)和第二参考点(C)之间形成第一连线(CO)，第二参考点(C)和第三参考点(E)之间形成第二连线(CE)，第一连线(CO)的长度介于11～19mm，第一连线(CO)和第二连线(CE)之间的夹角介于20°～65°，第二连线(CE)的长度介于10.5～18.4mm。通过上述方式，能有效地提升耳机(200)的佩戴舒适度及佩戴稳定性。

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，以及，申请号为PCT/CN2024/076495、申请日为2024年2月6日的PCT国际申请提出，并要求上述两个专利申请的优先权，该两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的技术领域，具体是涉及一种耳机。
 【背景技术】
随着电子设备的不断普及，电子设备已经成为人们日常生活中不可或缺的社交、娱乐工具，人们对于电子设备的要求也越来越高。耳机这类电子设备，也已广泛地应用于人们的日常生活，它可以与手机、电脑等终端设备配合使用，以便于为用户提供听觉盛宴。其中，按照耳机的工作原理，一般可以分为气导耳机和骨导耳机；按照用户佩戴耳机的方式，一般又可以分为头戴式耳机、耳夹式耳机和入耳式耳机；按照耳机与电子设备之间的交互方式，一般还可以分为有线耳机和无线耳机。其中，目前大多数的耳甲式耳机佩戴舒适度以及佩戴稳定性普遍较差，而耳机的佩戴舒适度及佩戴稳定性是用户适用耳机体验时的一个重要评判指标，故此，如何提升耳夹式耳机的佩戴舒适度及佩戴稳定性是目前迫切需要解决的问题。
 【发明内容】
本申请实施例提供了一种耳机，耳机包括发声部、抵接部和耳挂，耳挂连接发声部和抵接部，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，在沿耳挂的长度方向设置的参考截面内且在自然状态下，发声部的外壁面和抵接部的外壁面之间的最短连线的中点作为第一参考点或发声部的外壁面和抵接部的外壁面之间的接触区域所形成弧形的中点作为第一参考点，耳挂、发声部和抵接部具有一内轮廓，内轮廓具有距离第一参考点最远的第二参考点，内轮廓还具有位于第二参考点朝向发声部一侧的第三参考点，第一参考点和第二参考点之间形成第一连线，第二参考点和第三参考点之间形成第二连线，第一连线的长度介于11～19mm，第一连线和第二连线之间的夹角介于20°～65°，第二连线的长度介于10.5～18.4mm，第二参考点和第三参考点之间的内轮廓位于第二连线的外侧。
在一些实施方式中，内轮廓在第二参考点和第三参考点之间的弧弦比介于1.02～1.16。
在一些实施方式中，沿第二连线的垂线，第二连线与内轮廓线之间具有第一最大距离，第一最大距离介于1.5～3.7mm，且第一最大距离所对应的垂线与第二连线的交点到第二参考点的距离与第二连线的长度的比值介于0.2～0.7。
在一些实施方式中，内轮廓还具有位于第二参考点朝向抵接部一侧的第四参考点,第二参考点和第四参考点之间形成第三连线，第一连线和第三连线之间的夹角介于15°～50°，第三连线的长度介于6.6～8.6mm，第二参考点和第四参考点之间的内轮廓位于第三连线的外侧。
在一些实施方式中，内轮廓在第二参考点和第四参考点之间的弧弦比介于1.10～1.46。
在一些实施例中，沿第三连线的垂线，第三连线与内轮廓线之间具有第二最大距离，第二最大距离介于1.05～3.49mm，且第二最大距离所对应的垂线与第三连线的交点到第二参考点的距离与第三连线的长度的比值介于0.26～0.61。
在一些实施方式中，沿内轮廓，在第二参考点两侧且距离第二参考点各5mm的两点之间的弧弦比介于1.03～1.22。
在一些实施方式中，内轮廓的曲率半径设置成以第二参考点为起点分别向发声部和抵接部先逐渐增大后逐渐减小再逐渐增大，第三参考点和第四参考点为曲率半径的极小值点，或者第二参考点与内轮廓的其他点之间的直线距离以第二参考点为起点分别向发声部和抵接部先逐渐增大后逐渐减小，第三参考点和第四参考点为直线距离的极大值点。
在一些实施方式中，发声部具有最靠近第二参考点的第五参考点，第二参考点和第五参考点之间形成第四连线，第四连线位于第一连线和第二连线之间，第四连线的长度介于9.5～17mm，第四连线与第一连线之间的夹角介于9°～33°。
在一些实施方式中，第三参考点与第五参考点之间的至少部分区段设置成朝向发声部内部凹陷，且区段的弧弦比介于1.01～1.09，发声部设置有位于区段内的泄压孔。
在一些实施方式中，沿内轮廓，在第三参考点两侧且距离第三参考点各3mm的两点之间的弧弦比介于1.26～1.44。
在一些实施方式中，发声部具有第六参考点，第二参考点和第六参考点之间形成第五连线，第五连线与发声部相切设置，且介于第一连线和第三连线之间，第五连线的长度介于16～23mm，第五连线与第一连线之间的夹角介于1°～21°。
在一些实施方式中，发声部具有最远离二参考点的第七参考点，第二参考点和第七参考点之间形成第六连线，第六连线位于第一连线和第二连线之间，第六连线的长度介于25～30mm，第六连线与第一连线之间的夹角介于10°～26°。
在一些实施方式中，在第五参考点和第七参考点之间且朝向抵接部一侧，发声部的外壁面的弧弦比介于1.5～1.67。
在一些实施方式中，发声部具有靠近耳屏的第八参考点，第二参考点和第八参考点之间形成第七连线，第七连线位于第一连线和第二连线之间，第七连线的长度介于23～31mm，第七连线与第一连线之间的夹角20°～25°。
在一些实施方式中，抵接部具有最远离第二参考点的第九参考点第二参考点和第九参考点之间形成第八连线，第八连线位于第一连线和第三连线之间，第八连线的长度介于16～25mm，第八连线与第一连线之间的夹角15°～25°。
在一些实施方式中，参考截面为耳挂的耳挂对称面。
在一些实施方式中，耳挂包括弹性金属丝，耳挂对称面为弹性金属丝的中轴线所在平面。
在一些实施方式中，耳挂包括弹性金属片，弹性金属片沿长度方向相背设置的两端分别连接发声部和抵接部，且在佩戴状态下，弹性金属片的厚度方向朝向或远离耳轮，耳挂对称面沿弹性金属片的宽度方向中分弹性金属片。
本申请的有益效果是：通过上述方式，将第一连线的长度设置于11～19mm范围内，基于此能有效地确保发声部和抵接部在耳挂的作用下，能充分地夹持耳轮，从而有效地提升耳机与耳朵之间的固定效果。并且，第一连线与第二连线之间的夹角介于20°～65°，基于此能更好的确保耳机的内轮廓能尽可能的绕过耳轮，减少耳机的内轮廓与耳轮的接触，从而有效地提升耳机的佩戴舒适度及佩戴稳定性。进一步地，第二连线的长度过小会导致发声部无法伸进耳甲腔内影响耳机的发声质量，或者发声部伸进耳甲腔内后耳机的内轮廓尤其是第二参考点处的位置接触耳轮，而过大则会增大耳机的整体体积，使得耳机的整体质量较大，导致耳机佩戴不稳定，故此将第二连线的长度设置在10.5～18.4mm的范围内，能在确保发声部能稳定的伸进耳甲腔，以确保内轮廓及发声部不与耳轮接触，并且还能有效地减小耳机的整体体积，从而有效地提升耳机的佩戴舒适度及佩戴稳定性的同时，有效地提升耳机的传声质量。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，而非限制本申请。
 【附图说明】
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请耳机佩戴在大耳朵人群或小耳朵人群的耳部后的正向示意图；
图2是图1所示耳机的三维结构示意图；
图3是图1所示耳机佩戴在大耳朵人群的耳部后的截面a-a示意图；
图4是图1所示耳机佩戴在小耳朵人群的耳部后的截面a-a示意图；
图5是图2所示耳机在自然状态下抵接部和发声部不抵接的参考截面b-b的一示意图；
图6是图2所示耳机在自然状态下抵接部和发声部发生抵接的参考截面b-b的结构示意图；
图7是图2所示耳机在自然状态下抵接部和发声部不抵接的参考截面b-b的另一示意图；
图8是图2所示耳机在自然状态下抵接部和发声部不抵接的参考截面b-b的另一示意图；
图9是图2所示耳机在自然状态下抵接部和发声部不抵接的参考截面b-b的另一示意图；
图10是图2所示耳机在自然状态下抵接部和发声部不抵接的参考截面b-b的另一示意图；
图11是图2所示耳机在自然状态下抵接部和发声部不抵接的参考截面b-b的另一示意图；
图12是图2所示耳机在自然状态下抵接部和发声部不抵接的参考截面b-b的另一示意图；
图13是图2所示耳机在自然状态下抵接部和发声部不抵接的参考截面b-b的另一示意图；
图14是图1所示耳机示意出弹性金属片的结构示意图。
 【具体实施方式】
下面结合附图和实施例，对本申请作进一步的详细描述。特别指出的是，以下实施例仅用于说明本申请，但不对本申请的范围进行限定。同样的，以下实施例仅为本申请的部分实施例而非全部实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。本领域技术人员显式地和隐式地理解的是，本申请所描述的实施例可以与其他实施例相结合。
结合图1，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的鼓膜，但是为了便于描述，并结合图1，本申请在没有特别说明的情况下，外耳道101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的后侧凹陷，耳屏E19则沿背离用户的头部的方向朝耳部的前侧凸起。其中，“耳部的前侧”是一个相对于“耳部的后侧”的概念，前者指耳部背离头部的一侧，例如图1，后者指耳部朝向头部的一侧，他们均是针对用户的耳部。
进一步地，不同的用户可能存在个体差异，导致耳部存在不同的形状、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，为了便于描述和理解，如果没有特别说明，本说明书将主要以具有“标准”形状和尺寸的耳部模型作为参考，进一步描述不同实施例中的声学装置在该耳部模型上的佩戴方式。例如，可以基于ANSI:S3.36,S3.25和IEC:60318-7标准制得一含头部及其(左、右)耳部的模拟器，例如GRAS 45BC KEMAR，作为佩戴声学装置的参照物，以此呈现出大多数用户正常佩戴声学装置的情景。仅仅作为示例，作为参考的耳部可以具有如下相关特征：耳廓在矢状面上的投影在垂直轴方向的尺寸可以在49.5mm-74.3mm的范围内，耳廓在矢状面上的投影在矢状轴方向的尺寸可以在36.6mm-55mm的范围内。因此，本申请中，诸如“佩戴者佩戴”、“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声学装置佩戴于前述模拟器的耳部。当然，考虑到不同的用户存在个体差异，耳部EAR中一个或多个部位的结构、形状、大小、厚度等可以具有一定区别。为了满足不同用户的需求，可以对声学装置进行差异化设计，这些差异化设计可以表现为声学装置中一个或多个结构(例如，下文中的发声部210、耳挂230等)的特征参数可以具有不同范围的数值，以此适应不同的耳部。
需要说明的是：在医学、解剖学等领域中，可以定义人体的矢状面(Sagittal Plane)、冠状面(Coronal Plane)和水平面(Horizontal Plane)三个基本切面以及矢状轴(Sagittal Axis)、冠状轴(Coronal Axis)和垂直轴(Vertical Axis)三个基本轴。其中，矢状面是指沿身体前后方向所作的与地面垂直的切面，它将人体分为左右两部分；冠状面是指沿身体左右方向所作的与地面垂直的切面，它将人体分为前后两部分；水平面是指沿身体上下方向所作的与地面平行的切面，它将人体分为上下两部分。相应地，矢状轴是指沿身体前后方向且垂直于冠状面的轴，冠状轴是指沿身体左右方向且垂直于矢状面的轴，垂直轴是指沿身体上下方向且垂直于水平面的轴。进一步地，本申请所述的“耳部的前侧”是一个相对于“耳部的后侧”的概念，前者指耳部背离头部的一侧，后者指耳部朝向头部的一侧，他们均是针对用户的耳部。其中，沿人体冠状轴所在方向观察上述模拟器的耳部，可以得到图1所示的耳部的前侧轮廓示意图。基于此，结合图1，X、Y和Z三个方向可以分别简单地视作人体冠状轴、人体矢状轴和人体垂直轴；XY、XZ和YZ三个平面可以分别简单地视作人体水平面、人体冠状面和人体矢状面。
参见图2-4，本申请提出一种耳机200，其为耳夹式耳机，其中，耳机200包括插入佩戴者的耳甲腔E12的发声部210、用于抵接佩戴者的耳后的抵接部220和连接于发声部210和抵接部220的耳挂230。该发声部210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，在佩戴状态下位于耳甲腔E12。具体地，抵接部220与发声部210形成夹持状态，以便将整个耳机200夹持佩戴在使用者的耳轮E17上。一些实施例中，该抵接部220可作为电池仓使用，用以安装电池或其他部件。当然，抵接部220也可不作为电池仓使用，而将电池安装到发声部210。耳挂230为提供夹持力的部件，耳挂230的两端分别于发声部210及抵接部220连接，在佩戴状态下，耳挂230绕过耳轮E17以使发声部210和抵接部220沿人体冠状轴位于人体耳朵的两侧，并且发声部210延伸至耳甲腔E12，以将声音传递至耳道。
进一步参见图2-6，耳机200具有一参考截面b-b，该参考截面b-b沿耳挂230的长度方向设置，其中，在佩戴状态下，参考截面b-b与人体水平面近乎平行。在参考截面内，耳挂230、发声部210和抵接部220具有一内轮廓300，其中，内轮廓300上至少包括参考点C、参考点E、参考点H及参考点L，并且耳机200还包括参考点O。
其中，参考点C为内轮廓300上与耳轮E17之间存在特殊位置关系的参考点，具体地，在佩戴状态下，参考点C为位于耳挂230上，且对应于耳轮E17边缘1071的参考点，并且参考点C为内轮廓300的转折点，例如，内轮廓300为整体背离耳轮E17突出的轮廓线，其中，至少位于边缘1071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210和抵接部220先逐渐增大后逐渐减小再逐渐增大。
进一步参见图5，参考点O为发声部210与抵接部220之间存在特殊位置关系的参考点，自然状态下，发声部210的外壁面和抵接部220的外壁面之间的最短连线Q1Q2的中点即为参考点O。如图4所示，在一些实施例中，自然状态下，发声部210的外壁面和抵接部220的外壁面之间不发生抵接，其中，发声部210的外壁面的参考点Q1存在切线QL1(其中，切线QL1为经过参考点Q1并与发声部210的外壁面相切的线),抵接部220的外壁面的参考点Q2存在切线QL2(其中，切线QL2为经过参考点Q2并于抵接部220的外壁面相切的线)，并且切线QL1和QL2相互平行，其中，最短连线Q1Q2为发声部210的外壁面在参考点Q1的法线，且为抵接部220的外壁面在参考点Q2的法线，并且为切线QL1和QL2之间距离最短时的连线。
或者，进一步参见图6，若自然状态下，发声部210的外壁面和抵接部220的外壁面之间发生抵接，故此发声部210的外壁面与抵接部220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的外壁面和抵接部220的外壁面之间的抵接区域形成的弧线Q3Q4的中点。参考点E为参考点C朝向发声部210的参考点，参考点H为参考点C朝向抵接部220的参考点，参考点L为发声部210上最靠近参考点C的参考点。
故此，进一步参见图5-6，在一些实施例中，可以直接通过参考点C与耳轮E17边缘1071之间的位置关系对参考点C进行定位，以将参考点C作为第一参考点O，并进一步地通过参考点C分别限定参考点E、参考点H、参考点L及参考点O，并分别将参考点E、参考点H、参考点L及参考点O作为第二参考点C、第三参考点E、第四参考点H及第五参考点L，以限定耳机200的整体结构，基于此能使得耳机200的整体结构与耳轮E17和耳甲腔E12的生理结构更加匹配，进而有效地提升耳机200的佩戴舒适度。
可选地，在一些实施例中，参考点C还是参考点O与内轮廓300之间的特殊位置关系参考点，也即参考点C为内轮廓300到参考点O距离最远的参考点。故此，可以通过参考点O来对参考点C进行定位，也即将参考点O作为第一参考点O，进而通过参考点O与内轮廓300之间的特殊位置关系确定参考点C，并将参考点C作为第二参考点C。进一步地，通过参考点O和参考点C分别限定参考点E、参考点H及参考点L，并分别将参考点E、参考点H及参考点L作为第三参考点E、第四参考点H及第五参考点L，以限定耳机200的整体结构，基于此能耳机200的整体结构与耳轮E17和耳甲腔E12的生理结构更加匹配，进而有效地提升耳机200的佩戴舒适度。
可选地，参见图3-5，在一些实施例中，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，可选为17mm或18mm。连线CH的长度介于6.5～9.0mm，可选为6.8mm、7.3mm、7.8mm、8.1mm、8.5mm或者8.8mm。连线CE和连线CH之间的夹角R1介于72°～88°，可选为75°、78°、81°或85°。参考点C和参考点E之间的内轮廓300位于连线CE的外侧310，参考点C和参考点H之间的内轮廓300位于连线CH的外侧320。例如，在一些实施例中，连线CE的长度也可介于10.5～18.4mm或者16.5～18mm等落在范围16～19mm之间的取值范围，连线CH的长度也可介于6.6～8.6mm或者6.8～8mm等落在范围6.5～9.0mm之间的取值范围。
具体地，参考点E为参考点C朝向发声部210一侧的参考点，其与参考点C形成连线CE，参考点C和参考点E之间的内轮廓300位于连线CE的外侧310，参考点H为参考点C朝向抵接部220的一侧的参考点，其与参考点C形成连线CH，参考点C和参考点H之间的内轮廓300位于连线CH的外侧320。在佩戴使用耳夹式耳机200的体验中，若耳机200的内轮廓300与耳轮E17接触，在长期使用过程中会极大地影响耳机200的佩戴舒适度，影响佩戴者的使用体验。在一些实施中，连线CE又称为第一连线或第二连线，连线CH又称为第二连线或第三连线。
其中，连线CE和连线CH之间的夹角R1过小会导致耳机200的内轮廓300，尤其是参考点C和参考点E之间的内轮廓300以及参考点C和参考点H之间的内轮廓300，不能尽可能绕过耳轮E17，过大则会增大耳机200的整体体积，使得耳机200的整体质量较大，导致耳机200佩戴不稳定，故此将连线CE和连线CH之间的夹角R1设置在72°～88°的范围内，能更好的确保耳机200的内轮廓300能尽可能的绕过耳轮E17，减少耳机200的内轮廓300与耳轮E17的接触的同时还能有效地减小耳机200的整体体积，从而有效地提升耳机200的佩戴舒适度及佩戴稳定性。例如，在一些实施例中，连线CE和连线CH之间的夹角R1可以设置为80°。
进一步地，连线CE的长度过小会导致发声部210无法伸进耳甲腔E12内影响耳机200的发声质量，或者发声部210伸进耳甲腔E12内后耳机200的内轮廓300尤其是参考点C处的位置接触耳轮E17，而过大则会增大耳机200的整体结构体积，使得耳机200的整体质量较大，导致耳机200佩戴不稳定，故此将连线CE的长度设置在16～19mm或者10.5～18.4mm的范围内，能在确保发声部210能稳定的伸进耳甲腔E12以及确保内轮廓300及发声部210不与耳轮E17接触的同时，还能有效地减小耳机200的整体体积，从而有效地提升耳机200的佩戴舒适度及耳机200的传声质量的同时，还能有效地提升耳机200的佩戴稳定性。进一步地，连线CH的长度过小会导致抵接部220与耳轮E17发生接触，过大则会增大耳机200的整体体积，使得耳机200的整体质量较大，导致耳机200佩戴不稳定，故此将连线CH的长度设置在6.5～9.0mm或者6.6～8.6mm，能更好地确保耳机200的内轮廓300能尽可能的绕过耳轮E17，以确保耳机200的内轮廓300及抵接部220不与耳轮E17接触，并且还能有效地减小耳机200的整体体积，从而有效地提升耳机200的佩戴舒适度及佩戴稳定性。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，进一步参见图3-4，在一些实施例中，内轮廓300的曲线形状与耳轮E17和耳甲腔E12的生理结构匹配，基于此能使得内轮廓300能尽可能的绕过耳轮E17不与耳轮E17接触的同时，还能有效地减小耳机200的整体体积。
例如，在一些实施例中，内轮廓300的曲率半径设置成以参考点C为起点分别向发声部210和抵接部220先逐渐增大后逐渐减小再逐渐增大，参考点E和参考点H为曲率半径的极小值点。具体地，曲率半径以参考点C为起点分别向发声部210和抵接部220先逐渐增大后逐渐减小再逐渐增大，基于此使得内轮廓300与耳轮E17和耳甲腔E12的生理结构更加匹配，从而有效地减小耳机200的整体体积，以提升耳机200的佩戴稳定性的同时，在耳机200处于佩戴状态时，还能有效地防止内轮廓300与耳轮E17接触，从而有效地提升耳机200的佩戴舒适度。其中，参考点E和参考点H分别为参考点C朝向发声部210和朝向抵接部220的两个参考点，其中，参考点E和参考点H设置为内轮廓300的曲率半径的极小值点，并且，参考点E为内轮廓300从参考点C开始向发声部210延伸后曲率半径出现的第一个极小值点，参考点H为内轮廓300从参考点C开始向抵接部220延伸后曲率半径出现的第一个极小值点，基于此使得发声部210和抵接部220分别绕过耳轮E17后，沿人体矢状轴，发声部210和抵接部220能分别与耳夹腔的两侧充分地抵接，从而有效地提升耳机200的佩戴稳定性。
又例如，在一些实施例中，参考点C与内轮廓300的其他点之间的直线距离以参考点C为起点分别向发声部210和抵接部220先逐渐增大后逐渐减小，参考点E和参考点为直线距离的极大值点。具体地，以参考点C为起点，将内轮廓300上的其他点与参考点C之间的直线距离分别向发声部210和抵接部220先逐渐增大后逐渐减小，基于此使得内轮廓300与耳轮E17和耳甲腔E12的生理结构更加匹配，从而有效地减小耳机200的整体体积，以提升耳机200的佩戴稳定性的同时，在耳机200处于佩戴状态时，还能有效地防止内轮廓300与耳轮E17接触，从而有效地提升耳机200的佩戴舒适度。其中，参考点E和参考点H设置为内轮廓300到参考点C的极大值点，并且，参考点E为内轮廓300从参考点C开始向发声部210延伸后，内轮廓300与参考点C出现的第一个极大值点，参考点H为内轮廓300从参考点C开始向抵接部220延伸后，内轮廓300与参考点C出现的第一个极大值点，基于此使得发声部210和抵接部220分别绕过耳轮E17后，沿人体矢状轴，发声部210和抵接部220能分别与耳夹腔的两侧充分地抵接，从而有效地提升耳机200的佩戴稳定性。
可选地，参见图5，在一些实施例中，内轮廓300在参考点C和参考点E之间的弧弦比介于1.02～1.20，可选为1.05、1.08、1.12、1.16或1.18。可选地，在一些实施例中，内轮廓300在参考点C和参考点E之间的弧弦比还可介于1.02～1.16、或者1.02～1.1等落在范围1.02～1.20之间的取值范围。
具体地，内轮廓300在参考点C和参考点E之间的弧弦比具体指的是，参考点C和参考点E之间的内轮廓300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300为弯弧状曲线轮廓，在参考点C和参考点E之间的内轮廓300的弧弦比即为参考点C和参考点E之间的内轮廓300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300在参考点C和参考点E之间的内轮廓300为背离连线CE凸出的连续弧线。在其它实施例中，内轮廓300也可以不设置为曲线，其也可以是多段直线等。
其中，内轮廓300在参考点C和参考点E之间的弧弦比过小使得参考点C和参考点E之间的内轮廓300较平直，不利于参考点C和参考点E之间的内轮廓300绕过耳轮E17，内轮廓300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300过于弯曲，增加耳机200的整体体积，故此将内轮廓300在参考点C和参考点E之间的弧弦比设置在1.02～1.20或者1.02～1.16等范围内，使得参考点C和参考点E之间的内轮廓300能尽可能的绕过耳轮E17，不与耳轮E17接触，从而有效地提升耳机200的佩戴舒适度的同时还能有效地提升耳机200的佩戴稳定性。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，参见图5，沿连线CE的垂线，连线CE与内轮廓300之间具有第一最大距离L1，第一最大距离L1介于1.5～3.7mm，可选为2.3、2.6、2.9、3.2或3.6mm。且第一最大距离L1所对应的垂线与连线CE的交点到参考点C的距离与第一连线的长度的比值介于0.2～0.7，可选为0.3、0.4或0.52。
具体地，连线CE在参考平面内，与内轮廓300之间的距离指的是，分别与连线CE以及内轮廓300相交，并垂直于连线CE的垂线段。其中，连线CE与参考点C和参考点E的之间的内轮廓300之间的最大距离也即第一最大距离L1，第一最大距离L1的尺寸不能过小也不能过大，过小会减小参考点C和参考点E之间的内轮廓300的弧弦比，导致参考点C和参考点E的之间的内轮廓300不能充分地绕过耳轮E17，影响耳机200的佩戴舒适度，过大则会增大参考点C和参考点E之间的内轮廓300的弧弦比，导致参考点C和参考点E之间的内轮廓300过于弯曲，增加耳机200的整体体积，故此将第一最大距离L1设置在1.5～3.7mm范围内，能有效地防止参考点C和参考点E的之间的内轮廓300与耳轮E17接触以有效地提升耳机200的佩戴舒适度的同时，还能有效地提升耳机200的佩戴稳定性。
进一步地，将第一最大距离L1所对应的垂线与连线CE的交点到参考点C的距离与第一连线的长度的比值设置于0.2～0.7的范围内，使得内轮廓300与连线CE之间出现第一最大距离L1的位置与连线CE之间相对位置关系较为合理，从而在确保参考点C和参考点E之间的内轮廓300不与耳轮E17接触，提升耳机200的佩戴舒适度的同时，还能有效地提升耳机200的佩戴稳定性。
例如，在一些实施例中，第一最大距离L1为2.88mm，且第一最大距离L1所对应的垂线与连线CE的交点到参考点C的距离与第一连线的长度的比值约为0.45。
[援引加入（细则20.6）30.12.2024]
可选地，参见图5，沿连线CE的垂线，连线CE与内轮廓300之间具有第一最大距离L1，第一最大距离L1介于2.1～3.7mm，可选为2.3、2.6、2.9、3.2或3.6mm。且第一最大距离L1所对应的垂线与连线CE的交点到参考点C的距离与第一连线的长度的比值介于0.2～0.55，可选为0.3、0.4或0.52。
[援引加入（细则20.6）30.12.2024]
可选地，内轮廓300在参考点C和参考点H之间的弧弦比介于1.05～1.23，例如可选为1.07、1.1、1.15等。例如在一些实施例中，内轮廓300在参考点C和参考点H之间的弧弦比也可介于1.10～1.46等。例如在一些实施例中，内轮廓300在参考点C和参考点H之间的弧弦比也可介于1.10～1.23等。
具体地，内轮廓300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300的实际长度与连线CH的长度的比值，例如，在一些实施例中，内轮廓300为弯弧状曲线轮廓，在参考点C和参考点H之间的内轮廓300的弧弦比即为参考点C和参考点H之间的内轮廓300的弧长与连线CH的长度的比值。值得注意的是，在本实施例中，内轮廓300在参考点C和参考点H之间的内轮廓300为背离连线CH凸出的连续弧线。在其它实施例中，内轮廓300也可以不设置为曲线，其也可以是多段直线等。
其中，内轮廓300在参考点C和参考点H之间的弧弦比过小使得参考点C和参考点H之间的内轮廓300较平直，不利于参考点C和参考点H之间的内轮廓300绕过耳轮E17，内轮廓300在参考点C和参考点H之间的弧弦比过大又会导致参考点C和参考点H之间的内轮廓300过于弯曲，增大耳机200的整体体积，故此将内轮廓300在参考点C和参考点E之间的弧弦比设置在1.10～1.46的范围内，使得参考点C和参考点H之间的内轮廓300能尽可能的绕过耳轮E17，不与耳轮E17接触，从而有效地提升耳机200的佩戴舒适度的同时还能有效地提升耳机200的佩戴稳定性。并且，将内轮廓300在参考点C和参考点E之间的弧弦比设置在1.10～1.46的范围内，能使内轮廓300符合大多数人群的耳部的轮廓，从而有效地提升耳机200的适用性。例如，在一些实施例中，内轮廓300在参考点C和参考点E之间的弧弦比设置为1.19。
可选地，参见图5，沿连线CH的垂线，第二连线与内轮廓300线之间具有第二最大距离L2，第二最大距离L2介于1.05～2.0mm，可选为1.08、1.12、1.3、1.34、1.48、1.72、1.86或1.91。第二最大距离L2所对应的垂线与第二连线的交点到参考点C的距离与连线CH的长度的比值介于0.4～0.8，可选为0.43、0.49、0.56、0.63、0.66、0.71或0.77。例如，在一些实施例中，第二最大距离L2可介于1.5～2.0mm或者1.05～3.49mm等在范围1～3.5mm之间的取值范围，第二最大距离L2所对应的垂线与第二连线的交点到参考点C的距离与连线CH的长度的比值可以介于0.26～0.61等位于范围0.4～0.8的取值范围。
具体地，具体地，连线CH在参考平面内，与内轮廓300之间的距离指的是，分别与连线CH以及内轮廓300相交，并垂直于连线CH的垂线段。其中，连线CH与参考点C和参考点H的之间的内轮廓300之间的最大距离也即第二最大距离L2，第二最大距离L2的尺寸不能过小也不能过大，过小会减小参考点C和参考点H之间的内轮廓300的弧弦比，导致参考点C和参考点H的之间的内轮廓300不能充分地绕过耳轮E17，影响耳机200的佩戴舒适度，过大则会增大参考点C和参考点H之间的内轮廓300的弧弦比，导致参考点C和参考点H之间的内轮廓300过于弯曲，容易对耳轮E17形成挤压，影响耳机200的佩戴舒适度，故此将第二最大距离L2设置在1.5～2.0mm或者1.05～3.49mm范围内，能有效地防止参考点C和参考点H的之间的内轮廓300与耳轮E17接触，以防止耳机200对耳轮E17造成挤压，从而有效地提升耳机200的佩戴舒适度的同时。
进一步地，将第二最大距离L2所对应的垂线与连线CH的交点到参考点C的距离与连线CH的长度的比值介于0.4～0.8或者0.26～0.61，基于此能使得内轮廓300与连线CE之间出现第一最大距离L1的位置与连线CE之间相对位置关系较为合理，以确保参考点C和参考点E之间的内轮廓300不与耳轮E17接触，提升耳机200的佩戴舒适度的同时，还能有效地提升耳机200的佩戴稳定性。例如，在一些实施例中，第二最大距离L2设置为1.8mm，且第二最大距离L2所对应的垂线与第二连线的交点到参考点C的距离与连线CH的长度的比值设置为0.51。
可选地，参见图5，在一些实施例中，沿内轮廓300，在参考点C两侧且距离参考点C各5mm的两点之间的弧弦比介于1.03～1.22，可选为1.06、1.08、1.1、1.2等。其中，在本实施例中，在距离参考点C两侧各5mm的两点之间的内轮廓300为背离发声部210及抵接部220凸出的连续弧线。
[援引加入（细则20.6）30.12.2024]
可选地，参见图5，在一些实施例中，沿内轮廓300，在参考点C两侧且距离参考点C各5mm的两点之间的弧弦比介于1.03～1.12，可选为1.06、1.08、1.1等。其中，在本实施例中，在距离参考点C两侧各5mm的两点之间的内轮廓300为背离发声部210及抵接部220凸出的连续弧线。
具体地，在耳机200处于佩戴状态时，参考点C为对应于耳轮E17边缘1071的内轮廓300上的点，在内轮廓300在参考点C附近的区域，为耳机200容易与耳轮E17发生接触的区域之一，故此在该区域内的内轮廓300的弧玄比过小，会增大耳机200的整体体积，影响耳机200的佩戴稳定性，过大则会影响内轮廓300与耳轮E17的匹配，使得耳机200容易与耳轮E17发生接触或挤压，从而影响耳机200的佩戴舒适度。
例如，在大多数适用人群中，参考点C两侧且距离参考点C各5mm的两点之间的内轮廓300，为耳机200容易与耳轮E17发生接触的主要区域，故此将参考点C两侧且距离参考点C各5mm的两点之间的弧弦比设置为上述数值范围内的数值，使得耳机200的内轮廓300能与耳轮E17的轮廓更好的适配，有效地防止耳机200在佩戴状态时与耳轮E17发生接触或挤压，进而有效地提升耳机200的佩戴舒适度的同时，还能有效地提升耳机200的佩戴稳定性。可选地，参考点C两侧且距离参考点C各5mm的两点之间的弧弦比介于1.03～1.22，使得参考点C两侧且距离参考点C各5mm的两点之间内轮廓300弧度适中，在佩戴过程中，使得耳挂的形变分布较为均匀，不容易出现应力集中现象，从而有效地提升耳机200的稳定性和使用寿命。
可选地，参见图7，在一些实施例中，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9.5～17mm，可选为13.6、14.1、15.2、16.3或16.6mm。连线CL与连线CE之间的夹角R2介于20°～65°，可选为16°、16.6°、18.3°、19°、19.5°、21°、24°、25.5°、26°、26.8°、30、40、45或50°。
具体地，在一些实施例中，连线CL又称为第三连线或第四连线。参考点L为发声部210上最靠近参考点C的一个特殊点，故此连线CL和连线CH之间的夹角在一定程度上决定发声部210能否充分的放置于耳甲腔E12内，连线CL的长度在一定程度上决定发声部210能否在充分放置于耳甲腔E12内时，耳机200的内轮廓300还能不与耳轮E17发生接触。故此将连线CL的长度设置于9.5～17mm之间，连线CL与连线CE之间的夹角R2设置于20°～65°之间，基于此使得内轮廓300在不与耳轮E17接触或挤压的前提下，发声部210还能充分的放置于耳甲腔E12内，从而有效地提升耳机200的佩戴舒适度的同时，还能有效地提升耳机200的传声质量。例如，在一些实施例中，连线CL的长度设置为15mm，连线CL与连线CE之间的夹角R2设置为21°。
[援引加入（细则20.6）30.12.2024]
可选地，参见图7，在一些实施例中，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，可选为13.6、14.1、15.2、16.3或16.6mm。连线CL与连线CE之间的夹角R2介于15°～27°，可选为16°、16.6°、18.3°、19°、19.5°、21°、24°、25.5°、26°或26.8°。
可选地，在一些实施例中，参考点E与参考点L之间的至少部分区段设置成朝向发声部210内部凹陷，且该区段的弧弦比介于1.02～1.12，可选为1.04、1.07、1.1或1.11。发声部210设置有位于区段内的泄压孔330。上述中，参考点E与参考点L之间朝向发声部210内部凹陷区段的内轮廓300，应为朝向发声部210内部凹陷的连续弧线。
具体地，参考点E和参考点L之间设置有泄压孔330部分的区段包括两部分，一部分是参考点E和参考点P1之间的区段，另一部分是参考点P1至参考点L之间的区段，其中，参考点E和参考点P1之间的区段为朝向发声部210内部凹陷，参考点P1至参考点L之间的区段为背离发声部210的内部突出的区段。其中，泄压孔330设置在参考点E和参考点L之间朝向发声部210内部凹陷的区段，也即泄压孔330设置在参考点E和参考点P1之间的区段，其中，将泄压孔330位于参考点E和参考点P1之间的区段内，使得耳机200在佩戴时能有效地将泄压孔330隐藏于耳机200与耳朵之间，从而有效地提升耳机200的美观度。其中，在一些实施例中，内轮廓300设置有泄压孔330的区段，可以是泄压孔330的外轮廓的端点Q5及端点Q6的连线。
进一步地，参考点E和参考点L之间设置有泄压孔330部分的区段的弧弦比设置在1.02～1.12范围内(例如，在一些实施例中，该区段的弧弦比设置为1.061)，以使参考点E和参考点P1之间的区段呈朝向发声部210内部凹陷的凹弧，基于此能有效地防止泄压孔330被耳朵或者发声部210本身遮挡，从而有效地提升泄压孔330的泄压效果，进而有效地提升耳机200的音质。
可选地，在一些实施例中，在参考点E两侧且距离参考点E各3mm的两点之间的弧弦比介于1.26～1.44。
具体地，在参考点E两侧且距离参考点E各3mm的两点，也即参考点P1和参考点P2，其中，内轮廓300在参考点P1和参考点P2之间的部分为朝向发声部210内部凹陷的弧线，并且内轮廓300在参考点P1和参考点P2之间的弧弦比介于1.26～1.44或者1.29～1.40，基于此使得在参考点E两侧且距离参考点E各3mm的两点之间的内轮廓300呈现朝向发声部210内部凹陷的凹弧的同时，有效地确保参考点E和参考点P1之间的区段朝向发声部210内部凹陷的深度，以有效地防止设置在参考点E和参考点P1之间的区段内的泄压孔330被耳朵或者发声部210本身遮挡。
例如，在一些实施例中，在参考点E两侧且距离参考点E各3mm的两点之间的弧弦比设置为1.352，基于此使得在参考点E两侧且距离参考点E各3mm的两点之间的内轮廓300呈现朝向发声部210内部凹陷的凹弧的同时，有效地确保参考点E和参考点P1之间的区段朝向发声部210内部凹陷的深度，以有效地防止设置在参考点E和参考点P1之间的区段内的泄压孔330被耳朵或者发声部210本身遮挡。
可选地，进一步参见图5-7，在一些实施例中，发声部210的外壁面和抵接部220的外壁面之间具有最短连线，最短连线的中点作为参考点O，参考点C和参考点O之间形成连线CO，连线CO位于CL连线和CH连线之间。连线CO的长度介于15～20mm，可选为15.3、15.8、16.1、16.5、17、17.7、18.3、18.6、19.2或19.5。CO连线与连线CL之间的夹角R3介于9°～33°，可选为12°、15°、17°、23°或30°。可选地，在一些实施例中，连线CO的长度还可设置在11～19mm等位于范围15～20mm之间的取值范围。
具体地，如上述内容所阐述的，发声部210的外壁面和抵接部220的外壁面相互之间不发生接触，故此发声部210的外壁面与抵接部220的外壁面之间具有最短连线且最短连线的长度不为0，此时参考点O为最短连线Q1Q2的中点，具体可参见上述内容所阐述的，这里本文不再详细赘述。在一些实施例中，发声部210的外壁面和抵接部220的外壁面相互之间存在接触，故此发声部210的外壁面与抵接部220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的外壁面和抵接部220的外壁面之间的抵接区域形成的弧线Q3Q4的中点，具体可参见上述内容所阐述的，这里本文不再详细赘述。
其中，连线CO的长度设置于15～20mm或11～19mm范围内，且连线CO与连线CL之间的夹角R3设置于9°～33°范围内，基于此能有效地确保发声部210和抵接部220在耳挂230的作用下，能充分地夹持耳轮E17，从而有效地提升耳机200与耳朵之间的固定效果。例如，在一些实施例中，连线CO的长度设置于17.35mm，且连线CO与连线CL之间的夹角R3设置于14°。
可选地，进一步参见图5，在一些实施例中，连线CO与连线CE之间的夹角R4介于20°～65°，可选为17°、19°、22°、24°、30°或45°。基于此能更好的确保耳机200的内轮廓300能尽可能的绕过耳轮E17，减少耳机200的内轮廓300与耳轮E17的接触的同时，还能提升内轮廓300能与耳轮E17及耳甲腔E12的生理结构匹配，以减小耳机200的整体体积，从而有效地提升耳机200的佩戴舒适度及佩戴稳定性。例如，在一些实施例中，连线CO与连线CE之间的夹角R4可以设置为21°。
[援引加入（细则20.6）30.12.2024]
可选地，进一步参见图5，在一些实施例中，连线CO与连线CE之间的夹角R4介于15°～27°，可选为17°、19°、22°、24°或26°。基于此能更好的确保耳机200的内轮廓300能尽可能的绕过耳轮E17，减少耳机200的内轮廓300与耳轮E17的接触的同时，还能提升内轮廓300能与耳轮E17及耳甲腔E12的生理结构匹配，以减小耳机200的整体体积，从而有效地提升耳机200的佩戴舒适度及佩戴稳定性。
可选地，进一步参见图7，在一些实施例中，连线CO与连线CH之间的夹角R4介于15°～50°，基于此能更好的确保耳机200的内轮廓300能尽可能的绕过耳轮E17，减少耳机200的内轮廓300与耳轮E17的接触的同时，还能提升内轮廓300能与耳轮E17及耳甲腔E12的生理结构匹配，以减小耳机200的整体体积，从而有效地提升耳机200的佩戴舒适度及佩戴稳定性。例如，在一些实施例中，连线CO与连线CH之间的夹角R4可以设置为43°。
[援引加入（细则20.6）30.12.2024]
可选地，进一步参见图7，在一些实施例中，连线CO与连线CH之间的夹角R4介于25°～50°，基于此能更好的确保耳机200的内轮廓300能尽可能的绕过耳轮E17，减少耳机200的内轮廓300与耳轮E17的接触的同时，还能提升内轮廓300能与耳轮E17及耳甲腔E12的生理结构匹配，以减小耳机200的整体体积，从而有效地提升耳机200的佩戴舒适度及佩戴稳定性。
可选地，进一步参见图7，在一些实施例中，连线CL还进一步位于连线CE和连线CO之间，其中，连线CL与连线CO之间的夹角R3介于9°～33°，可选为11°、13°、16°、18°或30°，基于此使得内轮廓300在不与耳轮E17接触或挤压的前提下，发声部210还能充分的放置于耳甲腔E12内，从而有效地提升耳机200的佩戴舒适度的同时，还能有效地提升耳机200的传声质量。例如，在一些实施例中，连线CL与连线CO之间的夹角R3可以设置为14°。
[援引加入（细则20.6）30.12.2024]
可选地，进一步参见图7，在一些实施例中，连线CL还进一步位于连线CE和连线CO之间，其中，连线CL与连线CO之间的夹角R3介于9°～19°，可选为11°、13°、16°或18°，基于此使得内轮廓300在不与耳轮E17接触或挤压的前提下，发声部210还能充分的放置于耳甲腔E12内，从而有效地提升耳机200的佩戴舒适度的同时，还能有效地提升耳机200的传声质量。例如，在一些实施例中，连线CL与连线CO之间的夹角R3可以设置为14°。
可选地，参见图8，在一些实施例中，发声部210具有参考点J，参考点C和参考点J之间形成连线CJ，连线CJ与发声部210相切设置，且介于连线CO和连线CH之间，连线CJ的长度介于16～23mm，可选为17、17.6、18、20或22mm。CJ连线与CL连线之间的夹角R6介于1°～21°，可选为13°、15°、17°、18.4°或19°。可选地，在一些实施例中，连线CJ的长度可以设置在17～23mm等位于范围16～23mm内的取值范围。
具体地，在一些实施例中，参考点J又称为第六参考点J，连线CJ又称为第五连线。其中，连线CJ与发声部210相切设置，且参考点C又是对应于耳轮E17边缘1071的参考点，故此沿耳轮E17至耳甲腔E12的方向，参考点J为在发声部210能与耳甲腔E12接触的前提下距离参考点C最远的点，其中，将连线CJ的长度设置于16～23mm或者17～23mm的范围之间，连线CJ与连线CL之间的夹角R6设置于1°～21°的范围之间，基于此能有效地提升发声部210与耳甲腔E12的接触面积，从而有效地减缓耳机200在佩戴时对耳朵的压痛感，进而有效地提升耳机200的佩戴舒适度。例如，在一些实施例中，连线CJ的长度可以设置为19.7mm或者20.2mm，连线CJ与连线CL之间的夹角R6可以设置为16°。
可选地，进一步参见图8，在一些实施中，连线CJ与连线CO之间的夹角R7介于1°～21°，可选为13°、17°、18.5°或20°。基于此能有效地提升发声部210与耳甲腔E12的接触面积，从而有效地减缓耳机200在佩戴时对耳朵的压痛感，进而有效地提升耳机200的佩戴舒适度。例如，在一些实施例中，连线CJ与连线CO之间的夹角R7可以设置为16°。
[援引加入（细则20.6）30.12.2024]
可选地，进一步参见图8，在一些实施中，连线CJ与连线CO之间的夹角R7介于11°～21°，可选为13°、17°、18.5°或20°。基于此能有效地提升发声部210与耳甲腔E12的接触面积，从而有效地减缓耳机200在佩戴时对耳朵的压痛感，进而有效地提升耳机200的佩戴舒适度。
可选地，参见图9，在一些实施例中，发声部210具有最远离参考点C的参考点K，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CO之间，连线CK的长度介于24～30mm，可选为25、25.6、26.1、27、28.1或29mm。连线CK与连线CE之间的夹角R8介于13°～25°，可选为14°、16°、17.8°、20.7°、22°、24°或24.7°。可选地，在一些实施例中，连线CK的长度可以设置在25～30mm等位于范围24～30mm内的取值范围。
具体地，参考点K为发声部210上最远离参考点C的点，在一些实施例中，参考点K又称为第七参考点K，连线CK又称为第六连线。
其中，在耳机200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200的传声效果，故此将连线CK的长度设置于24～30mm或者25～30mm的范围之间，连线CK与连线CE之间的夹角R8设置于13°～25°的范围之间，基于此能使得发声部210在伸入耳甲腔E12时，发声部210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210遮挡耳孔的同时，有效地提升耳机200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R8可以设置为20°。
可选地，进一步参见图9，在一些实施例中，连线CK与连线CO之间的夹角R9介于10°～26°，可选为13°、15°、17°或18°。基于此设置能使得发声部210在伸入耳甲腔E12时，发声部210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210遮挡耳孔的同时，有效地提升耳机200的传声效果。例如，在一些实施例中，连线CK与连线CO之间的夹角R9可以设置为15°。
[援引加入（细则20.6）30.12.2024]
可选地，进一步参见图9，在一些实施例中，连线CK与连线CO之间的夹角R9介于10°～20°，可选为13°、15°、17°或18°。基于此设置能使得发声部210在伸入耳甲腔E12时，发声部210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210遮挡耳孔的同时，有效地提升耳机200的传声效果。
可选地，在一些实施中，参考点L和参考点K之间且朝向抵接部220一侧，发声部210的外壁面的弧弦比介于1.4～1.7，可选为1.5、1.6或1.65。基于此设置使得发声部210朝向抵接部220一侧更趋向于球形。其中，参考点L和参考点K之间且朝向抵接部220一侧，发声部210的外壁面为朝向抵接部一侧凸出的连续弧形面。可选地，在一些实施例中，发声部210的外壁面的弧弦比也可设置在1.5～1.67等位于范围1.4～1.7内的取值范围。例如，在一些实施例中，考点L和参考点K之间且朝向抵接部220一侧，发声部210的外壁面的弧弦比可以设置为1.64。
可选地，参见图10，发声部210具有靠近耳屏E19的参考点G，参考点C和参考点G之间形成连线CG，连线CG位于连线CE和连线CO之间，CG连线与连线CO之间的夹角R10介于20°～25°，可选为21°、23°、24°或24.5°。且CG连线的长度介于23～31mm，可选为25、27、28或30mm。
具体地，进一步参见图3、图4及图10，参考点G为发声部210的参考点，在一些实施例中，参考点G又称为第八参考点G，连线CG又称为第七连线。在耳机200处于佩戴状态时，参考点G靠近耳屏E19设置，故此若参考点G过于靠近耳屏E19，或者与耳屏E19接触，则会使得发声部210在一定程度上将耳孔遮挡，从而影响用户的使用体验，故此将连线CG的长度设置于23～30mm的范围之间，连线CG与连线CO之间的夹角R10设置于12°～20°的范围之间，基于此能使得发声部210在伸入耳甲腔E12时，发声部210靠近参考点G处的区域与耳屏E19保持适中的距离，从而有效地防止发声部210遮挡耳孔。例如，在一些实施例中，CG连线与连线CO之间的夹角R10可以设置为18°，且CG连线的长度可以设置为27.12mm，CG连线与连线CO之间的夹角R10设置为23°。
可选地，在一些实施中，发声部210的外壁面和抵接部220的外壁面之间的最短连线Q1Q2具有背离抵接部220或朝向抵接部220延伸的延长线Z4，延长线Z4与发声部210背离抵接部220一侧的外壁面的交点即为参考点G。
可选地，进一步参见图3、图4及图10，在一些实施例中，抵接部220具有最远离参考点C的参考点D，参考点C和参考点D之间形成连线CD，连线CD位于连线CE和连线CH之间，连线CD的长度介于16～25mm，可选为18、17、19.5、21、23或24mm。连线CD与连线CH之间的夹角R11介于15°～26°，可选为16°、18°、21°、23°或24°。可选地，在一些实施例中，连线CD的长度可以介于16～24mm等位于范围16～25mm的取值范围。
具体地，进一步参见图3、图4及图10，参考点D为抵接部220上最远离参考点C的参考点，在耳机200处于佩戴状态时，参考点D为抵接部220最靠近耳轮E17背侧的头骨部位400的参考点。为了有效地耳机200的佩戴舒适度，应尽量地避免抵接部220与耳轮E17背侧的头骨部位400抵接。故此将连线CD的长度设置于16～24mm或者16～25mm的范围内，连线CD与连线CH之间的夹角R11设置于15°～26°的范围内，基于此能有效地防止抵接部220靠近参考点D的部分与耳轮E17背侧的头骨部位400接触或抵接，从而有效地提升耳机200的佩戴舒适度。例如，在一些实施例中，连线CD的长度设置为20.65mm，连线CD与连线CH之间的夹角R11设置为22°或19°。
进一步地，将连线CD的长度设置于16～24mm或者16～25mm的范围内，连线CD与连线CH之间的夹角R11设置于15°～26°的范围内，基于此还能有效地提升耳机200适用性。
例如，在图3所示的耳机200佩戴状态实施中，大耳朵人群在佩戴耳机200时，抵接部220与头骨部位400存在最小间距h1，其中，最小间距h1即为参考点D到头骨部位400的直线距离。在图4所示的耳机200佩戴状态实施中，小耳朵人群在佩戴耳机200时，抵接部220与头骨部位400存在最小间距h2，其中，最小间距h2即为参考点D到头骨部位400的直线距离。由于耳朵大小的差距，导致最小间距h2比最小间距h1更小，故此将连线CD的长度设置于16～24mm或者16～25mm的范围内，连线CD与连线CH之间的夹角R11设置于15°～26°的范围内，使得耳机200即使在小耳朵人群中使用时，抵接部220与用户的头骨部位400之间也存在足够大的最小间距h2，从而有效地提升耳机200适用性。
可选地，进一步参见图3、图4及图10，在一些实施例中，连线CD还位于连线CO和连线CH之间，连线CD与连线CO之间的夹角R12介于15°～25°，可选为16°、18°、19°、22°或24°。基于此能有效地防止抵接部220靠近参考点D的部分与耳轮E17背侧的头骨部位400接触或抵接，从而有效地提升耳机200的佩戴舒适度。例如，在一些实施例中，连线CD与连线CO之间的夹角R12可以设置为20°。
可选地，参见图11-13，在一些实施例中，如上述内容所阐述的，耳机200包括发声部210、抵接部220和耳挂230。耳挂230连接发声部210和抵接部220，在佩戴状态下，发声部210和抵接部220在使用者的耳轮E17两侧形成夹持状态，且发声部210位于耳甲腔E12内。进一步地，在一些实施例中，耳挂230包括弹性金属件，在沿耳挂230的长度方向设置的参考截面b-b内且在自然状态下，弹性金属件包括弹性段233，弹性段233进一步划分成分别呈弧形设置且彼此连接的第一子弹性段231和第二子弹性段232，第一子弹性段231连接发声部210，第二子弹性段232连接抵接部220。其中，在远离第一子弹性段231与第二子弹性段232的连接点A的方向上，第一子弹性段231的以连接点A为起点的至少部分区段的曲率半径和第二子弹性段232的以连接点A为起点的至少部分区段的曲率半径逐渐增大，第一子弹性段231的长度大于第二子弹性段232的长度，且在第一子弹性段231远离连接点A的第一端点B处，第一子弹性段231具有第一曲率半径，在第二子弹性段232远离连接点A的第二端点F处，第二子弹性段232具有第二曲率半径，第一曲率半径大于第二曲率半径。
具体地，上述内容所参数的参考点C位于法线方向Z1上，其中，法线方向Z1为在连接点A处，与耳挂230的法线共线的方向，第一子弹性段231位于参考点C和参考点E之间的区域，第二子弹性段232位于参考点C和参考点H之间的区域。故此在耳机200处于佩戴状态时，连接点A位于对应于耳轮E17边缘1071的位置。连接点A为弹性段233的曲率半径的突变点，弹性段233在连接点A处划分为第一子弹性段231和第二子弹性段232。第一子弹性段231和第二子弹性段232通过上述方式设置，使得弹性段233与耳轮E17和耳甲腔E12的生理结构更加匹配，从而有效地提升弹性段233的夹持效果，进而有效地提升耳机200的佩戴稳定性。并且，第一端点B为第一子弹性段231与发声部210连接的端点，第二端点F为第二子弹性段232与抵接部220连接的端点，由于在耳轮E17与耳甲腔E12连接处的轮廓存在突变点，故此在第一端点B处设置第一曲率半径，在第二端点F处设置第二曲率半径，使弹性段233与耳轮E17和耳甲腔E12的生理结构更加匹配，从而有效地提升弹性段233的夹持效果，进而有效地提升耳机200的佩戴稳定性。
可选地，参见图11-13，在一些实施例中，远离连接点A的方向上且在连接点A和第一端点B之间，第一子弹性段231的曲率半径均呈逐渐增大，远离连接点A的方向上且在连接点A和第二端点F之间，第二子弹性段232的曲率半径均呈逐渐增大，基于此使得弹性段233与耳轮E17和耳甲腔E12的生理结构更加匹配的同时，还能有效地减小弹性段233的结构复杂度，从而有效地提升弹性段233的加工效率。
可选地，在一些实施例中，连接点A与第一端点B之间形成连线AB，连线AB的长度介于12～18mm，第一子弹性段231位于连线AB的外侧，连接点A与第二端点F之间形成连线AF，连线AF的长度介于4～9mm，例如连线AF的长度可以为5mm、6mm、7mm或8mm等，第二子弹性段232位于连线AF的外侧。
具体地，在一些实施例中，连线AB又称为连接点A与第一端点B之间形成的第一连线，连线AF又称为连接段与第二端点F之间形成的第二连线。连线AB和连线AF过短会导致第一子弹性段231和第二子弹性段232的刚度较大，使得弹性段233不易弹性形变形成夹持力，连线AB和连线AF过长会导致第一子弹性段231和第二子弹性段232刚度较小，导致弹性段233的夹持力较小，不利于耳机200的夹持固定。故此将连线AB的长度设置于12～18mm的范围之间，连线AF的长度设置于4～9mm的范围之间，基于此使得第一子弹性段231的长度和第二子弹性段232的长度能处在一个较为适中的范围内，从而使得弹性段233易于形成夹持力的同时，有效地增加夹持力，进而有效地提升弹性段233的夹持效果，以有效地提升耳机200的佩戴稳定性。例如，在一些实施例中，连线AB的长度设置为14.94mm，连线AF的长度设置为6.16mm。
可选地，在一些实施例中，第一子弹性段231的弧弦比介于1.03-1.1，例如可以为1.05或1.08等。第二子弹性段232的弧弦比介于1.04～1.12，具体可以为1.05、1.065、1.07或1.2等。基于此能进一步地提升弹性段233的夹持效果，以有效地提升耳机200的佩戴稳定性。其中，第一子弹性段231在参考截面b-b内的轮廓形状为背离连线AB凸出的连续弧形，第二子弹性段232在参考截面b-b内的轮廓形状为背离连线AF凸出的连续弧形。例如，在一些实施例中，第一子弹性段231的弧弦比设置为1.08，第二子弹性段232的弧弦比设置为1.05。
可选地，在一些实施例中，在连接点A处，耳挂230具有第三曲率半径，第三曲率半径介于4～7mm，例如可以为4.3、5.1、6、6.4mm等。第一曲率半径与第三曲率半径的差值介于10～25mm，例如可选为12、15、17、19、20、23mm等。第二曲率半径与第三曲率半径的差值介于1.5～5mm，基于此能进一步地提升弹性段233的夹持效果，以进一步地提升耳机200的佩戴稳定性。例如，在一些实施例中，第三曲率半径设置为4.88mm，第一曲率半径与第三曲率半径的差值为13mm，第二曲率半径与第三曲率半径的差值设置为3.95mm。
可选地，进一步参见图12，在一些实施例中，在第一端点B处，第一子弹性段231具有第一切线方向Z2，在第二端点F处，第二子弹性段232具有第二切线方向Z3，第一切线方向Z2和第二切线方向Z3之间的夹角R13介于43°～68°，可选为45°、50°、55°、63°或67°等。基于此使得弹性段233的整体结构与耳轮E17和耳甲腔E12的生理结构更加匹配，从而进一步地提升耳机200的佩戴舒适度的同时，进一步地提升弹性段233的夹持效果，以进一步地提升耳机200的佩戴稳定性。例如，在一些实施例中，第一切线方向Z2和第二切线方向Z3之间的夹角R13设置为53°。当然，第一切线方向Z2也可以是与耳挂230在参考截面b-b上的外轮廓相切，具体地，第一切线方向Z2在第一端点B所对应的耳挂230的外轮廓上的点(例如经过第一端点B的法向与外轮廓的交点)与外轮廓相切。同理，第二切线方向Z3也可以是与耳挂230在参考截面b-b上的外轮廓相切，具体地，第二切线方向Z3在第一端点F所对应的耳挂230的外轮廓上的点(例如经过第二端点F的法向与外轮廓的交点)与外轮廓相切。
可选地，进一步参见图12，在一些实施例中，耳挂230具有一法线方向Z1，第一切线方向Z2与法线方向Z1之间的夹角R14介15°-33°，可选为17°、19°、23°、25°、29°或32°等。第二切线方向Z3与法线方向Z1之间的夹角R15介于24°-35°，可选为26°、29°、31°或33°。基于此使得弹性段233的整体结构与耳轮E17和耳甲腔E12的生理结构更加匹配，从而进一步地提升耳机200的佩戴舒适度的同时，进一步地提升弹性段233的夹持效果，以进一步地提升耳机200的佩戴稳定性。例如，在一些实施例中，第一切线方向Z2与法线方向Z1之间的夹角R14设置为27°，第二切线方向Z3与法线方向Z1之间的夹角R15设置为30°。
可选地，进一步参见图11，在一些实施例中，发声部210的外壁面和抵接部220的外壁面之间具有最短连线，最短连线的中点(也即参考点O)与连接点A之间的连线AO与法线方向Z1的夹角R16介于0°～10°，可选为0～8°，例如可以为2°、4°、5°或7°等，基于此使得弹性段233的整体结构与耳轮E17和耳甲腔E12的生理结构更加匹配，从而进一步地提升耳机200的佩戴舒适度的同时，进一步地提升弹性段233的夹持效果，以进一步地提升耳机200的佩戴稳定性。例如，在一些实施例中，夹角R16可以设置为1.08°。
可选地，进一步参见图13，在一些实施例中，耳挂230包括双稳态结构246，双稳态结构246设置于弹性段233，双稳态结构246用于使耳挂230具有第一稳态位置与第二稳态位置。发声部210和抵接部220在耳挂230处于第一稳态位置时的最小间距大于在耳挂230处于第二稳态位置时的最小间距。
具体地，双稳态结构246设置于弹性段233上，用于使得弹性段233能在第一稳态位置和第二稳态位置保持形态固定，以使发声部210和抵接部220能在耳挂230处于对应的稳态位置时保持对应的最小间距，以有效地提升耳机200的佩戴便捷性。例如，当用户需要佩戴耳机200时，用户可预先调节耳挂230处于第一稳态位置，从而使得发声部210和抵接部220之间间隔开足够大的间距，并保持，当耳机200佩戴到耳朵的对应位置后，取消双稳态结构246的形态固定功能，以使耳挂230恢复正常夹持功能。又例如，在用户不需要佩戴耳机200时，耳挂230自动或手动调节至使发声部210和抵接部220之间存在最小间距但又不直接接触的稳态位置，也即第二稳态位置，基于此能有效地防止用户再将耳机200从而耳朵上取下后，发声部210和抵接部220由于耳挂230的弹性作用下发声激烈碰撞，从而有效地提升耳机200的使用寿命。具体地，通过设置电池盒中的容置位置间距，使得耳机200在电池盒中时处于第一稳态位置，或耳机200可以在电池盒盖体关闭时依靠盖体挤压耳机200使其处于第一稳态位置，如此用户仅需在佩戴至耳轮上后，再压紧耳机使其处于第二稳态位置即可，仅需一步操作，提高了使用的便利度。
可选地，进一步参见图13，在一些实施例中，双稳态结构246包括间隔连接于弹性段233上的凸起部245与抵靠部244，抵靠部244抵靠在凸起部245的凸起点，抵靠部244与凸起点的两侧分别抵靠时形成第一稳态位置和第二稳态位置。其中，凸起点的两侧指的是沿法线方向Z1，凸起点的两侧。可选地，双稳态结构246可以设置于弹性段233对应于参考点C的位置，抵靠部244和凸起部245沿弹性段233的延伸方向分别设置于弹性段233的该对应于参考点C的位置的两侧。如此使得双稳态结构246位于耳挂230靠近耳轮的区域，方便用户操作，并且该位置为弹性段233主要变形区域且位置相对于居中，在此处不容易引起应力集中引发疲劳。
可选地，在一些实施例中，在自然状态下，发声部210和抵接部220在耳挂230的作用下彼此抵接。在一些实施例中，在自然状态下，在耳挂230的作用后，发声部210与抵接部220也可设置为不抵接，具体可参见上述内容所阐述的，这里本文不再详细赘述。
可选地，在一些实施例中，参考截面b-b为耳挂230的耳挂230对称面。
可选地，在一些实施例中，弹性金属件为弹性金属丝，耳挂230对称面为弹性金属丝的中轴线所在平面。
可选地，在一些实施例中，弹性金属件为弹性金属片233a，弹性金属片233a沿长度方向相背设置的两端分别连接发声部210和抵接部220，且在佩戴状态下，弹性金属片233a的厚度方向朝向或远离耳轮E17，耳挂230对称面沿弹性金属片233a的宽度方向中分弹性金属片233a,基于此使得弹性金属片233a的弹性形变趋势更符合耳轮E17和耳甲腔E12的生理结构，从而有效地提升耳机200的佩戴稳定性及佩戴舒适度。
可选地，在一些实施例中，在第一端点B和第二端点F之间，弹性金属片233a的宽厚比介于8～12，可选为9、10或11。基于此将弹性金属片233a的宽厚比设置在8～12的范围之间，能有效地使得弹性金属片233a具有较好的弹性，从而有效地提升耳挂230的弹性，进而有效地提升耳机200的佩戴稳定性和佩戴舒适度。
例如，在一些实施例中，弹性金属片233a的宽度设置为2mm，弹性金属片233a的厚度设置为0.2mm。
可选地，在一些实施例中，耳机200还包括软质电路板(FPC)，其中，软质电路板沿弹性金属件的长度方向布置，并设置于弹性金属件上，基于此能有效地减小耳机200上的布线难度。例如弹性金属件为弹性金属片233a，FPC可以大致贴着弹性金属片的上表面或者下表面延伸设置。如图14所示，弹性金属件可以为弹性金属片233a，弹性金属片233a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210和抵接部220接插连接，弹性金属片233a在靠近接插块2332的位置设置有沿宽度方向贯穿至弹性金属片233a的侧边缘的缺口2330，该缺口2330便于封胶，使得注塑效果更好。
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 (19)

  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，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，在沿所述耳挂的长度方向设置的参考截面内且在自然状态下，所述发声部的外壁面和所述抵接部的外壁面之间的最短连线的中点作为第一参考点或所述发声部的外壁面和所述抵接部的外壁面之间的接触区域所形成弧形的中点作为第一参考点，所述耳挂、所述发声部和所述抵接部具有一内轮廓，所述内轮廓具有距离所述第一参考点最远的第二参考点，所述内轮廓还具有位于所述第二参考点朝向所述发声部一侧的第三参考点，所述第一参考点和所述第二参考点之间形成第一连线，所述第二参考点和所述第三参考点之间形成第二连线，所述第一连线的长度介于11～19.6mm，所述第一连线和所述第二连线之间的夹角介于20°～65°，所述第二连线的长度介于10.5～18.4mm，所述第二参考点和所述第三参考点之间的所述内轮廓位于所述第二连线的外侧。
  2. 根据权利要求1所述的耳机，其特征在于，所述内轮廓在所述第二参考点和所述第三参考点之间的弧弦比介于1.02～1.16。
  3. 根据权利要求2所述的耳机，其特征在于，沿所述第二连线的垂线，所述第二连线与所述内轮廓线之间具有第一最大距离，所述第一最大距离介于1.5～3.7mm，且所述第一最大距离所对应的垂线与所述第二连线的交点到所述第二参考点的距离与所述第二连线的长度的比值介于0.2～0.7。
  4. 根据权利要求1所述的耳机，其特征在于，所述内轮廓还具有位于所述第二参考点朝向所述抵接部一侧的第四参考点,所述第二参考点和所述第四参考点之间形成第三连线，所述第一连线和所述第三连线之间的夹角介于15°～50°，所述第三连线的长度介于6.6～8.6mm，所述第二参考点和所述第四参考点之间的所述内轮廓位于所述第三连线的外侧。
  5. 根据权利要求4所述的耳机，其特征在于，所述内轮廓在所述第二参考点和所述第四参考点之间的弧弦比介于1.10-1.46。
  6. 根据权利要求5所述的耳机，其特征在于，沿所述第三连线的垂线，所述第三连线与所述内轮廓线之间具有第二最大距离，所述第二最大距离介于1.05～3.49mm，且所述第二最大距离所对应的垂线与所述第三连线的交点到所述第二参考点的距离与所述第三连线的长度的比值介于0.26～0.61。
  7. 根据权利要求4所述的耳机，其特征在于，沿所述内轮廓，在所述第二参考点两侧且距离所述第二参考点各5mm的两点之间的弧弦比介于1.03～1.22。
  8. 根据权利要求4-7任意一项所述的耳机，其特征在于，所述内轮廓的曲率半径设置成以所述第二参考点为起点分别向所述发声部和所述抵接部先逐渐增大后逐渐减小再逐渐增大，所述第三参考点和所述第四参考点为所述曲率半径的极小值点，或者
    所述第二参考点与所述内轮廓的其他点之间的直线距离以所述第二参考点为起点分别向所述发声部和所述抵接部先逐渐增大后逐渐减小，所述第三参考点和所述第四参考点为所述直线距离的极大值点。
  9. 根据权利要求4所述的耳机，其特征在于，所述发声部具有最靠近所述第二参考点的第五参考点，所述第二参考点和所述第五参考点之间形成第四连线，所述第四连线位于所述第一连线和所述第二连线之间，所述第四连线的长度介于9.5～17mm，所述第四连线与所述第一连线之间的夹角介于9°～33°。
  10. 根据权利要求9所述的耳机，其特征在于，所述第三参考点与所述第五参考点之间的至少部分区段设置成朝向所述发声部内部凹陷，且所述区段的弧弦比介于1.01～1.09，所述发声部设置有位于所述区段内的泄压孔。
  11. 根据权利要求10所述的耳机，其特征在于，沿所述内轮廓，在所述第三参考点两侧且距离所述第三参考点各3mm的两点之间的弧弦比介于1.26～1.44。
  12. 根据权利要求4所述的耳机，其特征在于，所述发声部具有第六参考点，所述第二参考点和所述第六参考点之间形成第五连线，所述第五连线与所述发声部相切设置，且介于所述第一连线和所述第三连线之间，所述第五连线的长度介于16～23mm，所述第五连线与所述第一连线之间的夹角介于1°～21°。
  13. 根据权利要求1所述的耳机，其特征在于，所述发声部具有最远离所述二参考点的第七参考点，所述第二参考点和所述第七参考点之间形成第六连线，所述第六连线位于所述第一连线和所述第二连线之间，所述第六连线的长度介于25～30mm，所述第六连线与所述第一连线之间的夹角介于10°～26°。
  14. 根据权利要求13所述的耳机，其特征在于，在所述第五参考点和所述第七参考点之间且朝向所述抵接部一侧，所述发声部的外壁面的弧弦比介于1.5～1.67。
  15. 根据权利要求1所述的耳机，其特征在于，所述发声部具有靠近所述耳屏的第八参考点，所述第二参考点和所述第八参考点之间形成第七连线，所述第七连线位于所述第一连线和所述第二连线之间，所述第七连线的长度介于23～31mm，所述第七连线与所述第一连线之间的夹角20°～25°。
  16. 根据权利要求4所述的耳机，其特征在于，
    所述抵接部具有最远离所述第二参考点的第九参考点所述第二参考点和所述第九参考点之间形成第八连线，所述第八连线位于所述第一连线和所述第三连线之间，所述第八连线的长度介于16～25mm，所述第八连线与所述第一连线之间的夹角15°～25°。
  17. 根据权利要求1所述的耳机，其特征在于，所述参考截面为所述耳挂的耳挂对称面。
  18. 根据权利要求17所述的耳机，其特征在于，所述耳挂包括弹性金属丝，所述耳挂对称面为所述弹性金属丝的中轴线所在平面。
  19. 根据权利要求17所述的耳机，其特征在于，所述耳挂包括弹性金属片，所述弹性金属片沿长度方向相背设置的两端分别连接所述发声部和所述抵接部，且在佩戴状态下，所述弹性金属片的厚度方向朝向或远离所述耳轮，所述耳挂对称面沿所述弹性金属片的宽度方向中分所述弹性金属片。
PCT/CN2024/134012 2023-12-11 2024-11-22 一种耳机 Pending WO2025124113A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202480028872.0A CN121128186A (zh) 2023-12-11 2024-11-22 一种耳机
EP24902535.4A EP4727161A1 (en) 2023-12-11 2024-11-22 Earbud
US19/432,218 US20260122396A1 (en) 2023-12-11 2025-12-24 Earphones

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202311701969 2023-12-11
CN202311701969.7 2023-12-11
CNPCT/CN2024/076495 2024-02-06
PCT/CN2024/076495 WO2025123484A1 (zh) 2023-12-11 2024-02-06 一种耳机

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US19/432,218 Continuation US20260122396A1 (en) 2023-12-11 2025-12-24 Earphones

Publications (1)

Publication Number Publication Date
WO2025124113A1 true WO2025124113A1 (zh) 2025-06-19

Family

ID=95947881

Family Applications (3)

Application Number Title Priority Date Filing Date
PCT/CN2024/134010 Pending WO2025124112A1 (zh) 2023-12-11 2024-11-22 一种耳机
PCT/CN2024/134012 Pending WO2025124113A1 (zh) 2023-12-11 2024-11-22 一种耳机
PCT/CN2025/071909 Pending WO2025124611A1 (zh) 2023-12-11 2025-01-10 耳夹式耳机

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/134010 Pending WO2025124112A1 (zh) 2023-12-11 2024-11-22 一种耳机

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/CN2025/071909 Pending WO2025124611A1 (zh) 2023-12-11 2025-01-10 耳夹式耳机

Country Status (4)

Country Link
US (2) US20260122396A1 (zh)
EP (3) EP4727161A1 (zh)
CN (7) CN120151728A (zh)
WO (3) WO2025124112A1 (zh)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203968330U (zh) * 2013-09-30 2014-11-26 Jvc建伍株式会社 耳挂式耳机
CN204468122U (zh) * 2011-04-05 2015-07-15 蓝色齿轮有限责任公司 耳件及包括该耳件的系统
CN210351554U (zh) * 2019-08-02 2020-04-17 深圳稳泰电声有限公司 一种夹耳式tws耳机
CN113301463A (zh) * 2021-02-03 2021-08-24 深圳市大十科技有限公司 一种用于耳机的夹耳结构
CN219834350U (zh) * 2023-04-17 2023-10-13 深圳市华上技术科技有限公司 一种夹耳结构
CN220023018U (zh) * 2023-03-02 2023-11-14 东莞市大瀚智能科技有限公司 夹耳式耳挂耳机
CN221784331U (zh) * 2023-12-11 2024-09-27 深圳市韶音科技有限公司 一种耳夹式耳机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080298625A1 (en) * 2007-06-02 2008-12-04 Allen Lamont Prince Earphone Earhook Stabilizer
WO2023096641A1 (en) * 2021-11-24 2023-06-01 Bose Corporation Retaining piece for an earpiece
CN114286243B (zh) * 2020-07-29 2025-04-11 深圳市韶音科技有限公司 一种耳机
CN218473354U (zh) * 2022-10-18 2023-02-10 江西联创宏声电子股份有限公司 一种耳挂及骨传导耳机
CN116709097A (zh) * 2023-06-30 2023-09-05 深圳市大十未来科技有限公司 一种耳机

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204468122U (zh) * 2011-04-05 2015-07-15 蓝色齿轮有限责任公司 耳件及包括该耳件的系统
CN203968330U (zh) * 2013-09-30 2014-11-26 Jvc建伍株式会社 耳挂式耳机
CN210351554U (zh) * 2019-08-02 2020-04-17 深圳稳泰电声有限公司 一种夹耳式tws耳机
CN113301463A (zh) * 2021-02-03 2021-08-24 深圳市大十科技有限公司 一种用于耳机的夹耳结构
CN220023018U (zh) * 2023-03-02 2023-11-14 东莞市大瀚智能科技有限公司 夹耳式耳挂耳机
CN219834350U (zh) * 2023-04-17 2023-10-13 深圳市华上技术科技有限公司 一种夹耳结构
CN221784331U (zh) * 2023-12-11 2024-09-27 深圳市韶音科技有限公司 一种耳夹式耳机
CN222016744U (zh) * 2023-12-11 2024-11-15 深圳市韶音科技有限公司 一种耳机

Also Published As

Publication number Publication date
US20260122396A1 (en) 2026-04-30
CN120151727A (zh) 2025-06-13
WO2025124611A1 (zh) 2025-06-19
CN120151735A (zh) 2025-06-13
CN223978727U (zh) 2026-03-06
EP4727161A1 (en) 2026-04-15
EP4723671A1 (en) 2026-04-08
CN121079991A (zh) 2025-12-05
CN121128186A (zh) 2025-12-12
WO2025124112A1 (zh) 2025-06-19
CN121866784A (zh) 2026-04-14
EP4716248A1 (en) 2026-03-25
US20260122397A1 (en) 2026-04-30
CN120151728A (zh) 2025-06-13

Similar Documents

Publication Publication Date Title
WO2025123484A1 (zh) 一种耳机
EP4489431A1 (en) Open earbud
WO2024087442A1 (zh) 一种开放式耳机
CN113271517B (zh) 护耳耳机
CN218941308U (zh) 一种夹耳式耳机
WO2025025397A1 (zh) 耳机
WO2025124401A1 (zh) 一种耳夹式耳机
CN221103540U (zh) 一种创新式夹耳蓝牙耳机
WO2025124113A1 (zh) 一种耳机
CN220173396U (zh) 一种耳机
US20260129334A1 (en) Earphones
HK40124017A (zh) 一种耳机
CN223666446U (zh) 夹耳式耳机
CN223978724U (zh) 一种耳夹式耳机
CN221863046U (zh) 一种居中调节适配人耳舒适度的耳机装置
CN222169991U (zh) 便于夹持的声学设备
CN223829428U (zh) 耳机及耳机系统
US20250350874A1 (en) Ear-clip earphones
WO2025030694A1 (zh) 一种佩戴稳定的耳机
CN118509759A (zh) 一种耳机
HK40106858A (zh) 一种开放式耳机
CN118413776A (zh) 挂耳式耳机

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24902535

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2024902535

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2024902535

Country of ref document: EP

Effective date: 20260108

ENP Entry into the national phase

Ref document number: 2024902535

Country of ref document: EP

Effective date: 20260108

ENP Entry into the national phase

Ref document number: 2024902535

Country of ref document: EP

Effective date: 20260108

WWP Wipo information: published in national office

Ref document number: 2024902535

Country of ref document: EP