Earphone

Abstract

The earphone comprises a sound production part, an abutting part and an ear hook, the ear hook is connected with the sound production part and the abutting part, in a wearing state, the sound production part and the abutting part form a clamping state on the two sides of a helix of a user, the sound production part is located in an auricular conchae cavity, the sound production part comprises a first shell and a sound production assembly, and the sound production assembly is used for forming a first containing cavity; the sound production assembly is arranged in the first containing cavity, a sound outlet hole is formed in the first shell, sound produced by the sound production assembly is output through the sound outlet hole, the sound outlet hole is arranged in a strip shape and is provided with a first end and a second end which are arranged at intervals in the length direction of the sound outlet hole, and in the wearing state, the first end is arranged towards the earhole, and the second end is arranged towards the earhole. And the distance between the outer wall surface of the first shell at the second end and the inner wall surface of the auricular conchae cavity is smaller than the distance between the outer wall surface of the first shell at the first end and the inner wall surface of the auricular conchae cavity. In this way, the sound quality of the earphone can be improved.

Description

[0001] This application is based on Chinese patent application CN202311701969.7, filed on December 11, 2023; Chinese patent application CN2024101723779, filed on February 6, 2024; PCT international application PCT / CN2024 / 076495, filed on February 6, 2024; and PCT international application PCT / CN2024 / 076377, filed on February 6, 2024. This application claims priority to the following seven patent applications: PCT / CN2024 / 076378, PCT / CN2024 / 076388, PCT / CN2024 / 076389, PCT / CN2024 / 076389, PCT / CN2024 / 076389, all of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electronic device technology, and in particular to a pair of headphones. Background Technology

[0003] Headphones are widely used in people's daily lives, and they can be used with electronic devices such as mobile phones and computers to provide users with sound playback functions. Among them, clip-on headphones are a new type of headphone. They are usually small in size and can be clipped onto the wearer's ear canal. Moreover, clip-on headphones do not block the ear canal, which not only ensures safety in outdoor scenarios, but also makes them more comfortable to wear than in-ear headphones.

[0004] However, the sound quality of current clip-on headphones is insufficient to meet the demand. Utility Model Content

[0005] This application provides an earphone, which includes a sound-emitting part, a contact part, and an ear hook. The ear hook connects the sound-emitting part and the contact part. The sound-emitting part is used to convert electrical signals into sound signals and play them. A battery is disposed in the contact part. In the wearing state, the sound-emitting part and the contact part are clamped on both sides of the user's auricle, and the sound-emitting part is located in the concha cavity. The sound-emitting part includes a first shell and a sound-emitting component for forming a first accommodating cavity. The sound-emitting component is disposed in the first accommodating cavity. The first shell is provided with a sound outlet hole. The sound generated by the sound-emitting component is output through the sound outlet hole. The sound outlet hole is arranged in a strip shape and has a first end and a second end spaced apart along the length direction of the sound outlet hole. In the wearing state, the first end is oriented towards the ear canal, and the distance between the outer wall surface of the first shell at the second end and the inner wall surface of the concha cavity is less than the distance between the outer wall surface of the first shell at the first end and the inner wall surface of the concha cavity.

[0006] In some embodiments, at the second end and / or on the side of the second end away from the first end, the outer wall surface of the first housing is in contact with the inner wall surface of the concha cavity.

[0007] In some embodiments, the outer wall of the first housing is configured such that the long side of the sound outlet is arc-shaped, and the distance between the outer wall of the first housing and the inner wall of the concha cavity gradually increases in the direction from the second end to the first end.

[0008] In some implementations, the arc-to-chord ratio of the long side of the sound outlet is between 1.05 and 1.4, or greater than or equal to 1.02 and less than 1.05.

[0009] In some implementations, the width-to-length ratio of the sound outlet is between 0.15 and 0.30.

[0010] In some implementations, the length of the sound outlet is between 9 and 16.5 mm, or greater than or equal to 5 mm and less than 9 mm.

[0011] In some embodiments, when the sound-emitting part and the abutting part are placed on a horizontal reference surface at the same time, the long side of the sound-emitting hole forms a first reference point with the horizontal reference surface between the first end and the second end, the second end is located on the side of the first reference point facing the abutting part, and the first end is located on the side of the first reference point away from the abutting part.

[0012] In some embodiments, the length of the long side hole of the sound outlet between the first end and the first reference point is between 2 and 5.5 mm, and the length of the long side hole of the sound outlet between the second end and the first reference point is between 4.5 and 8 mm.

[0013] In some embodiments, the arc-chord ratio of the long side hole of the sound outlet between the first end and the first reference point is between 1.02 and 1.05, or greater than or equal to 1.001 and less than 1.02; the arc-chord ratio of the long side hole of the sound outlet between the second end and the first reference point is between 1.02 and 1.05, or greater than 1.05 and less than or equal to 1.07.

[0014] In some embodiments, the long side of the sound outlet has a first normal direction at a first reference point, a second normal direction at a first end, and a third normal direction at a second end. The angle between the first normal direction and the second normal direction is between 30° and 42°, or greater than or equal to 15° and less than 30°; the angle between the first normal direction and the third normal direction is between 50° and 60°, or greater than or equal to 25° and less than 50°.

[0015] In some embodiments, the sound outlet has a center line arranged along its length direction, the sound outlet is arranged to intersect with a reference section arranged along the length direction of the ear hook, and the angle between the plane containing the center line and the reference section is between 0 and 45°, and the sound outlet is offset toward the earlobe.

[0016] In some implementations, the plane containing the dividing line coincides with the reference section; or, the sound outlet is mirror-symmetrical with respect to the reference section.

[0017] In some embodiments, on the reference cross section, the sound-emitting part has a second reference point closest to the abutment part, the inner contour of the ear hook has a third reference point furthest from the second reference point in the area near the edge of the helix when worn, the sound outlet is located on the side of the second reference point furthest from the third reference point, and on the outer wall surface of the sound-emitting part, the distance from the second end to the second reference point is between 2.2 and 4.2 mm, and the distance from the first end to the second reference point is between 9 and 12.4 mm.

[0018] In some embodiments, the sound-generating part is also provided with a pressure relief hole, which is positioned toward the helix and intersects with the reference section or is mirror-symmetrical with respect to the reference section.

[0019] In some implementations, the pressure relief hole and the sound outlet hole are spaced apart from each other by the contact area between the sound-producing part and the concha cavity.

[0020] In some embodiments, the number of pressure relief holes is one, and it is arranged in a strip shape. The reference cross section is arranged along the width direction of the pressure relief hole and intersects with the pressure relief hole.

[0021] In some embodiments, there are two pressure relief holes, which are respectively located on both sides of the reference section and are mirror-symmetrical with respect to the reference section, which is located along the width direction of the pressure relief hole.

[0022] In some embodiments, the pressure relief hole includes a first hole portion and a second hole portion along the length direction of the pressure relief hole, and a third hole portion connected between the first hole portion and the second hole portion, wherein the width of at least a portion of the first hole portion and the second hole portion is greater than the width of the third hole portion.

[0023] In some embodiments, the sound-generating component is provided with a sound-inlet hole that connects to the pressure relief hole through the first accommodating cavity. The distance between the sound-inlet hole and the pressure relief hole is not greater than 0.5 mm, or greater than 0.5 mm and less than or equal to 4 mm.

[0024] In some embodiments, the headphones also include a microphone, and the first housing is provided with an inlet for directing external sound to the microphone, the inlet being disposed intersecting with a reference cross section.

[0025] In some embodiments, the sound-generating assembly includes two horns, each horn including a diaphragm, the two horns being assembled and fitted together along an axial direction to form a first acoustic cavity between the two horns, the sound-generating assembly being provided with a first sound inlet communicating with a sound outlet and the first acoustic cavity, the sound outlet and the first sound inlet communicating with each other along the radial direction of the sound-generating assembly, the first sound inlet being further arranged in a strip shape, and the length direction of the sound outlet and the first sound inlet being arranged along the circumference of the sound-generating assembly. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the wearing state of the earphone embodiment of this application when worn on a human ear;

[0027] Figure 2 yes Figure 1 The diagram shown is a front view of the headphone structure.

[0028] Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure of the headphones shown;

[0029] Figure 4 yes Figure 1 The diagram shown is a top view of the headphone's structure.

[0030] Figure 5 yes Figure 1 A three-dimensional structural diagram of the sound-producing part of the earphone shown.

[0031] Figure 6 yes Figure 5 A front view schematic diagram of the structure of the sound-producing part shown;

[0032] Figure 7 yes Figure 6 A schematic diagram of a cross-sectional structure of the sound-generating part along the section line A to A;

[0033] Figure 8 yes Figure 6 A schematic diagram of another cross-section of the sound-generating part along section line A to A;

[0034] Figure 9 yes Figure 5 A top view of the structure of the sound-generating part;

[0035] Figure 10 yes Figure 8 A side view schematic diagram of the structure of the sound-generating component of the sound-generating part shown;

[0036] Figure 11 yes Figure 10 The diagram shows a cross-sectional view of the sound-generating component along the cutting line P to P;

[0037] Figure 12 yes Figure 8 An exploded view of the sound-generating component is shown.

[0038] Figure 13 yes Figure 8 A three-dimensional structural schematic diagram of another exemplary sound-generating component shown in the diagram;

[0039] Figure 14 yes Figure 11 A magnified schematic diagram of a local area Q of the sound-generating component shown;

[0040] Figure 15 yes Figure 5 A side view of the structure of the sound-producing part shown;

[0041] Figure 16 yes Figure 15 The diagram shows a cross-sectional structure of the sound-generating part along the cutting line J~J;

[0042] Figure 17 yes Figure 16 A top view of the structure of the sound-generating component of the sound-generating part shown;

[0043] Figure 18 yes Figure 8 A schematic diagram of the structure of the sound-generating component of the sound-generating part shown from another side;

[0044] Figure 19 yes Figure 5 A schematic diagram of the exploded structure of the sound-producing part shown.

[0045] Figure 20 yes Figure 5 Another exploded structural diagram of the sound-producing part is shown;

[0046] Figure 21 yes Figure 15 A schematic diagram of the cross-sectional structure of the sound-generating part along the cutting line U~U;

[0047] Figure 22 yes Figure 15 Another structural schematic diagram of the pressure relief hole of the sound-generating part is shown;

[0048] Figure 23 yes Figure 5 Another exploded structural diagram of the sound-producing part is shown.

[0049] Figure 24 yes Figure 4 The diagram shows a cross-sectional structure of the earphone along the cutting lines V to V.

[0050] Figure 25 yes Figure 24 A schematic diagram of the profile of the cross section corresponding to the cutting lines V to V shown;

[0051] Figure 26 yes Figure 1The diagram shows a three-dimensional structure of the earphone under preload.

[0052] Figure 27 yes Figure 26 A schematic diagram showing the change in clamping force of the earphones;

[0053] Figure 28 yes Figure 26 The diagram shows the structural intent of the earphones that measure preload using a thin-film pressure sensor.

[0054] Figure 29 yes Figure 26 A schematic diagram of a device for measuring the clamping force / preload of the earphones shown.

[0055] Figure 30 yes Figure 26 A schematic diagram of another measuring device for the clamping force / preload of the earphones shown.

[0056] Figure 31 yes Figure 1 The diagram shows a headphone with a magnetic coupling matching structure.

[0057] Figure 32 yes Figure 31 A schematic diagram showing the change in clamping force of the earphones;

[0058] Figure 33 yes Figure 31 A schematic diagram illustrating the change in clamping force of the earphone under pre-tightening conditions;

[0059] Figure 34 yes Figure 2 The diagram shows a cross-sectional structure of the earphone along section lines I to I.

[0060] Figure 35 yes Figure 24 Another schematic diagram of the cross section corresponding to the cutting lines V to V shown;

[0061] Figure 36 yes Figure 1 Another structural diagram of the headphones shown. Detailed Implementation

[0062] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0063] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0064] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0065] like Figure 1 As shown, the user's ear EAR may include physiological sites such as the external auditory canal E11, concha E12, cymba concha E13, triangular fossa E14, antihelix E15, scaphoid fossa E16, helix E17, and antitragus E18. Although the external auditory canal 101 has a certain depth and extends to the tympanic membrane of the ear EAR, for ease of description and in conjunction with... Figure 1 As shown, unless otherwise specified, the external auditory canal E01 in this application specifically refers to its entrance (i.e., ear hole) away from the tympanic membrane. Furthermore, physiological sites such as the concha E12, cymba conchae E13, and triangular fossa E14 have a certain volume and depth; and the concha E12 is directly connected to the external auditory canal E11, which can be simply regarded as the aforementioned ear hole being located at the bottom of the concha E12.

[0066] Furthermore, the external auditory canal of the ear EAR also contains the tragus E19. Compared to the concha E12, cymba conchae E13, and triangular fossa E14, these parts have a certain depth and volume in three-dimensional space. That is, these parts are concave towards the back of the ear EAR along the direction closer to the user's head, while the tragus E19 protrudes towards the front of the ear EAR along the direction away from the user's head. Here, "front of the ear EAR" is a concept relative to "back of the ear EAR." The former refers to the side of the ear EAR away from the head, for example... Figure 1 The latter refers to the ear EAR facing the side of the head; both are ear EARs designed for the user.

[0067] Furthermore, individual differences may exist among different users, leading to variations in the shape, size, and other dimensions of the ear EAR. To facilitate description and reduce (or even eliminate) these individual differences, a simulator containing a head and its (left and right) ear EARs can be manufactured based on ANSI:S3.36, S3.25 and IEC:603187 standards, such as the GRAS45BCKEMAR. Therefore, descriptions such as "user wearing headphones," "headphones in wearing state," and "in wearing state" can refer to the ear EAR of the headphones described in this application worn on the aforementioned simulator. Of course, due to individual differences among users, there may be some differences between the headphones worn by different users and the ear EAR worn on the aforementioned simulator, but such differences should be tolerable.

[0068] This application describes at least one exemplary structure of the earphone 1. For example... Figure 1 As shown, Figure 1 This shows the earphone 1 being worn on the user's ear. Earphone 1 can be a clip-on earphone. Figures 1 to 4 As shown, the earphone 1 includes a sound-emitting part 100 for insertion into the concha cavities E12 of a user, an abutment part 400 for abutting against the back of the user's ear, and an ear hook 300 connecting the sound-emitting part 100 and the abutment part 400. The ear hook 300 can bypass the user's auricle 17, and the sound-emitting part 100 and the abutment part 400 form a clamping state on both sides of the user's auricle. The sound-emitting part 100 is a sound playback device used to convert electrical signals into sound signals and play them to the wearer. The abutment part 400 forms a clamping state with the sound-emitting part 100 so that the entire earphone 1 is clamped and worn on the user's auricle. In some embodiments, the abutment part 400 may contain a battery, circuit board, or other components. Of course, the abutment part 400 may also be used without a battery, with the battery installed in the sound-emitting part 100.

[0069] In some embodiments, such as Figure 5 and Figure 6As shown, the sound-generating part 100 may be provided with a sound outlet 111 and a pressure relief hole 112. The sound outlet 111 may be located at the bottom of the sound-generating part 100, and the pressure relief hole 112 may be located on the side of the sound-generating part 100 near the ear hook 300. Figure 7 As shown, the sound-generating part 100 includes a first housing 10 and a sound-generating assembly 20. The first housing 10 is used to form a first receiving cavity 110, and the sound-generating assembly 20 is disposed in the first receiving cavity 110.

[0070] like Figure 7 As shown, the sound-generating assembly 20 includes two speakers 21. Each speaker 21 includes a diaphragm 22. The two speakers 21 are assembled and fitted together along the axial direction (i.e., the direction of axis Z) to form a first acoustic cavity 201 between the two speakers 21. The sound-generating assembly 20 and the first housing 10 cooperate with each other to form a second acoustic cavity 202 between the sound-generating assembly 20 and the first housing 10, which is isolated from the first acoustic cavity 201. The first housing 10 is provided with a sound outlet 111 communicating with the first acoustic cavity 201 and a pressure relief hole 112 communicating with the second acoustic cavity 202. The sound generated on one side of the diaphragm 22 of the two speakers 21 is output through the first acoustic cavity 201 and the sound outlet 111, and the sound generated on the other side of the diaphragm 22 of the two speakers 21 is output through the second acoustic cavity 202 and the pressure relief hole 112. The axial direction can be the direction pointed to by the central axis Z of the sound-generating component 20. For example, the central axis Z can pass through the geometric center of the sound-generating component 20 and the geometric center of the diaphragm 22 of the two speakers 21. The central axis Z can also be the central axis of the magnetic circuit of the two speakers 21.

[0071] For the speaker 21 used to generate sound, sound pressure level (SPL) is an important parameter for measuring its performance. SPL is commonly used to compare the sound pressure levels emitted by different sound sources, quantifying and comparing sound intensity. SPL is a measure used to describe the loudness of sound; it represents the logarithm of the ratio between the effective value of the sound pressure and its reference value, as shown in the following formula:

[0072]

[0073] Where SPL is the sound pressure level, P is the sound pressure generated by the speaker 21 when it is working, and Pref is the reference sound pressure. When the sound-generating assembly 20 is equipped with only a single speaker 21, the sound pressure generated when it is working is P. Under the same conditions, when two speakers 21 are set in the sound-generating assembly 20, the sound pressure generated when it is working is 2P. Therefore, according to the above formula, the difference in sound pressure level between a single speaker 21 and two speakers 21 can be calculated as follows:

[0074]

[0075] As can be seen from the above derivation, compared to setting only one speaker 21, by assembling and cooperating within the sound-generating component 20 along the axial direction (i.e., the direction of axis Z) and forming a first acoustic cavity 201 between the two speakers to produce sound, the sound pressure level of the sound-generating component 20 can be effectively improved, thereby achieving a better volume effect, allowing users to hear clearer sounds, and effectively improving the sound quality of the headphones 1.

[0076] Furthermore, by assembling and cooperating two speakers 21, the diaphragms 22 of the two speakers 21 can be positioned opposite each other to form a first acoustic cavity 201. The first acoustic cavity 201 is the place where the diaphragms 22 vibrate to push air and generate sound waves for the user to listen to. The second acoustic cavity 202 is connected to the pressure relief hole 112 and thus to the outside world, used to balance the air pressure inside the first housing 10. The first acoustic cavity 201 can be formed by assembling and cooperating two speakers 21. After the two speakers 21 are assembled, they are assembled as a whole into the first housing 10, which simplifies the structure and makes assembly simple. Moreover, by utilizing the sound-generating component 20 to form a second acoustic cavity 202 that is isolated from the first acoustic cavity 201, there is no need for additional structures or devices to form the second acoustic cavity 202, which also simplifies the structure, reduces the assembly difficulty of the headphones 1, and improves the assembly efficiency of the headphones 1.

[0077] Optionally, the two speakers 21 of the sound-generating assembly 20 have identical acoustic characteristics and are coaxially arranged along the axial direction (i.e., the direction of the Z-axis). The identical acoustic characteristics of the two speakers 21 mean that under the same driving signal, the sound pressure levels produced by the two speakers 21 are the same or close; specifically, the ratio of the sound pressure difference between the two speakers to the minimum sound pressure level is no greater than 10%. By setting two speakers 21 with identical acoustic characteristics and coaxially arranging them along the axial direction (i.e., the direction of the Z-axis), the sound quality of the sound-generating assembly 20 is improved.

[0078] Optionally, such as Figure 7 As shown, the sound-generating component 20 also includes a mounting bracket 27, which is arranged in a ring shape. Two speakers 21 are assembled and fitted to the two ends of the mounting bracket 27 to form a first acoustic cavity 201. The mounting bracket 27 is provided with a first sound inlet 203 that connects the sound outlet 111 and the first acoustic cavity 201.

[0079] By setting an annular mounting bracket 27, a first acoustic cavity 201 is formed while assembling and cooperating the two speakers 21. A first sound inlet 203 is set on the mounting bracket 27 to achieve communication between the sound outlet 111 and the first acoustic cavity 201. This allows the sound waves in the first acoustic cavity 201 to be transmitted to the user's ear EAR sequentially through the first sound inlet 203 and the sound outlet 111. This effectively simplifies the structure, improves the structural compactness and integration of the sound-generating component 20, reduces assembly difficulty, and improves assembly efficiency.

[0080] Alternatively, in some embodiments, such as Figure 7 As shown, each of the two speakers 21 includes a voice coil 23, a magnetic circuit system 24, and a frame 25. The frame 25 supports the diaphragm 22 and the magnetic circuit system 24. The voice coil 23 is connected to the diaphragm 22 and is positioned within the magnetic field formed by the magnetic circuit system 24. The frames 25 of the two speakers 21 are assembled with mounting brackets 27, forming a first acoustic cavity 201 between the diaphragms 22 of the two speakers 21 and the mounting brackets 27. The voice coil 23 can be cylindrical, and its axis can be the central axis Z of the sound-generating component 20. The voice coil 23 moves along its axis (i.e., the direction of axis Z) under the influence of the magnetic field formed by the magnetic circuit system 24, thereby causing the diaphragm 22 to vibrate and generate sound waves.

[0081] The sound-generating component 20 is assembled by assembling the frame 25 of the two speakers 21 with the mounting bracket 27. The frame 25 is set to support the diaphragm 22 and the magnetic circuit system 24. The structure is simple and compact, which effectively reduces the assembly difficulty and improves the assembly efficiency.

[0082] Figure 7 The diagram shows the assembly and mating of the frame 25 and mounting bracket 27 of two speaker 21s. Optionally, in some embodiments, the mounting bracket 27 can be omitted, and the frame 25s of the two speaker 21s can be assembled and mated to form a first acoustic cavity 201. In this case, at least one of the speaker 21s has a first sound inlet 203 on its frame 25, which connects the sound outlet 111 and the first acoustic cavity 201. For example, both frame 25s can have sound outlets 111, or each can have a portion of a sound outlet 111, forming a complete sound outlet 111 after assembly. The assembly and mating of the two speaker 21s and the formation of the first acoustic cavity 201 are achieved through the assembly and mating of the two frame 25s, without the need for additional connecting components. This simplifies the structure, reduces production costs, and helps to reduce assembly difficulty and improve assembly efficiency.

[0083] Optionally, such as Figure 7 As shown, the diaphragms 22 of the two speakers 21 are arranged adjacent to each other on the side away from their respective magnetic circuit systems 24, and the first acoustic cavity 201 is formed between the diaphragms 22 of the two speakers 21.

[0084] The diaphragms 22 of the two speakers 21 vibrate under the influence of their respective voice coils 23, generating sound waves for the user to hear on the side opposite to their respective magnetic circuit systems 24. By arranging the diaphragms 22 of the two speakers 21 adjacent to each other on the side opposite to their respective magnetic circuit systems 24, both speakers 21 generate sound waves within the first acoustic cavity 201. This effectively simplifies the structure of the sound-generating assembly 20 and facilitates a reduction in the volume of the first acoustic cavity 201, making the structure of the sound-generating assembly 20 more compact. This, in turn, helps to reduce the size of the headphones 1 and improves the wearing comfort of the headphones 1. Furthermore, the fact that the two speakers 21 share the first acoustic cavity 201 also allows the resonant peak of the first acoustic cavity 201 to shift to higher frequencies, which is beneficial for improving the sound quality of the headphones 1.

[0085] like Figure 7 As shown, the two speakers 21 are provided with second sound holes 204 on their frames 25 respectively. The second sound holes 204 connect the corresponding diaphragm 22 on the side facing its respective magnetic circuit system 24 with the second acoustic cavity 202.

[0086] The diaphragms 22 of the two speakers 21 are connected to the second acoustic cavity 202 through the second sound inlet 204 on the side facing their respective magnetic circuit system 24, and then connected to the outside through the pressure relief hole 112 to balance the air pressure inside the first housing 10. This not only ensures sound quality but also simplifies the structure of the sound-generating component 20 and facilitates assembly.

[0087] Alternatively, in some embodiments, such as Figure 7 As shown, the diaphragms 22 of the two speakers 21 share a second acoustic cavity 202 and a pressure relief hole 112 on the side facing their respective magnetic circuit systems 24. This arrangement reduces the number of pressure relief holes 112, improves the aesthetics of the earphone 1, and helps ensure the consistency of the acoustic characteristics of the two speakers 21, thus improving the sound quality of the sound-generating component 20. In addition, the two speakers 21 sharing the second acoustic cavity 202 facilitates sealing and reduces the volume of the first housing 10, making the structure of the earphone 1 more compact and effectively reducing the size of the earphone 1, which helps improve the wearing comfort of the earphone 1.

[0088] Alternatively, in other embodiments, such as Figure 8As shown, the second acoustic cavity 202 includes two isolated sub-acoustic cavities 202a. The first housing 10 is provided with pressure relief holes 112 that communicate with each sub-acoustic cavity 202a. The diaphragms 22 of the two speakers 21 are respectively connected to the corresponding sub-acoustic cavity 202a and pressure relief holes 112 on the side facing their respective magnetic circuit systems 24. By isolating the two sub-acoustic cavities 202a, the sound signals of the two speakers 21 can be made not completely consistent, so that the headphones 1 have a certain crossover function to adapt to different listening environments and sound quality requirements. Moreover, the isolated two sub-acoustic cavities 202a can reduce mutual interference between the two speakers 21, thereby improving the effectiveness and reliability of the operation of the two speakers 21 and improving the sound quality of the headphones 1.

[0089] Optionally, such as Figure 9 and Figure 10 As shown, the sound outlet 111 and the first sound inlet 203 are connected to each other along the radial direction RD of the sound-generating component 20. The sound outlet 111 and the first sound inlet 203 are respectively arranged in a strip shape, and the length direction of the sound outlet 111 and the first sound inlet 203 is arranged along the circumference of the sound-generating component 20. The radial direction RD of the sound-generating component 20 is perpendicular to the axial direction (i.e., the direction of the axis Z), and the circumference of the sound-generating component 20 is the direction surrounding the axial direction (i.e., the direction of the axis Z).

[0090] By setting the sound outlet 111 and the first sound inlet 203 into strip shapes, and arranging the length direction of the sound outlet 111 and the first sound inlet 203 along the circumference of the sound-generating component 20, while ensuring the area of ​​the sound outlet 111 and the first sound inlet 203, the length of the sound outlet 111 and the first sound inlet 203 in the axial direction (i.e., the direction of axis Z) is reduced, thereby improving the structural compactness of the sound-generating component 20, reducing the volume of the earphone 1, and improving the wearing comfort of the earphone 1.

[0091] In this application, any description of a physical / mathematical quantity (such as distance, ratio, area, length, width, thickness, etc.) falling within a certain numerical range may include the endpoints of the numerical range. For example, a distance between A and B can be A, B, or any value between A and B. Therefore, any subsequent descriptions involving "between" a numerical range shall be understood and applied in accordance with the above description.

[0092] Optionally, such as Figure 11As shown, the spacing Z22 between the mounting edges of the diaphragms 22 of the two speakers 21 along the axial direction (i.e., the direction of axis Z) is between 1.6 and 2.5 mm, for example, it can be 1.7 mm, 1.9 mm, 2.1 mm, 2.3 mm, etc., and of course, it can be other values. The mounting edge of the diaphragm 22 is the edge mounted on the frame 25. The radial dimension R21 of the first acoustic cavity 201 is between 7.5 and 9.5 mm, for example, it can be 7.8 mm, 8.1 mm, 8.5 mm, 8.8 mm, 9.1 mm, etc., and of course, it can be other values. Optionally, the areas of the sound outlet 111 and the first sound inlet 203 can be between 5 and 18 mm², respectively. 2 Optionally, the areas of the sound outlet 111 and the first sound inlet 203 can be between 9 and 20 mm². 2 For example, the areas of the sound outlet 111 and the first sound inlet 203 can each be 6 mm². 2 8mm 2 9mm 2 10mm 2 12mm 2 14mm 2 17mm 2 19mm 2 Of course, other values ​​are also possible. By reasonably setting the above dimensions, the structural compactness of the sound-generating component 20 can be improved, while the resonance peak of the first acoustic cavity 201 can be shifted to higher frequencies, which is beneficial to improving the sound quality of the headphones 1.

[0093] Optionally, such as Figure 11 As shown, the end of the magnetic circuit system 24 opposite to its respective diaphragm 22 protrudes from the frame 25, and the radial dimension R22 of the protruding part of the magnetic circuit system 24 relative to the frame 25 is smaller than the radial dimension R23 of the support position of the frame 25 on the diaphragm 22. This arrangement makes the outer contour of the sound-generating component 20 closer to a sphere, which facilitates structural compactness and integration, and effectively reduces the volume of the sound-generating component 20. The first accommodating cavity 110 can be set to be approximately spherical to match the appearance of the earphone 1. This arrangement makes it easier for the sound-generating component 20 to be assembled into the first accommodating cavity 110, effectively improving the space utilization of the first accommodating cavity 110 and improving the assembly efficiency of the earphone 1. In addition, by setting the outer contour of the sound-generating component 20 to be closer to a sphere, it is better adapted to the shape of the concha E12, thereby making full use of the space within the concha E12 and effectively improving the space utilization within the concha E12.

[0094] Optionally, such as Figure 11As shown, the ratio of the axial dimension Z21 of the sound-generating component 20 to the radial dimension R23 of the support position of the frame 25 on the diaphragm 22 is between 0.8 and 1.3, for example, this ratio can be 0.9, 1, 1.1, etc. Optionally, the ratio of the maximum axial dimension Z21 and the maximum radial dimension R20 of the sound-generating component 20 is between 0.8 and 1.3 mm, and this ratio can be 0.9, 1, 1.1, etc. In this way, the axial dimension Z21 of the sound-generating component 20 and the radial dimension R23 of the support position of the frame 25 on the diaphragm 22 are very close, making the outer contour of the sound-generating component 20 closer to a sphere, which facilitates better matching with the approximately spherical first receiving cavity 110, effectively improving the space utilization of the first receiving cavity 110, effectively reducing assembly difficulty and improving assembly efficiency. For example, if the axial dimension Z21 of the sound-generating component 20 is 9.5 mm and the radial dimension R23 of the support position of the frame 25 on the diaphragm 22 is 8.1 mm, then the ratio between the two is approximately 1.17. As another example, if the axial dimension Z21 of the sound-generating component 20 is 9.5 mm and the radial dimension R23 of the support position of the frame 25 on the diaphragm 22 is 8.8 mm, then the ratio between the two is approximately 1.08.

[0095] Alternatively, in some embodiments, such as Figure 11 and Figure 12 As shown, the sound-generating component 20 is provided with a mounting boss 271, and the first sound inlet 203 is disposed on the mounting boss 271. The mounting boss 271 abuts against the first housing 10 at the periphery of the sound outlet 111 (e.g., Figure 7 As shown in the diagram, the first sound inlet 203 and the sound outlet 111 are isolated from the second acoustic cavity 202. Of course, in other embodiments, the mounting boss 271 is also provided on the first housing 10, instead of on the sound-generating assembly 20. Specifically, the first housing 10 is provided with the mounting boss 271, and the sound outlet 111 is provided on the mounting boss 271. The mounting boss 271 abuts against the sound-generating assembly 20 around the periphery of the first sound inlet 203, thereby isolating the first sound inlet 203 and the sound outlet 111 from the second acoustic cavity 202.

[0096] By setting the mounting boss 271, the first sound inlet 203 and the sound outlet 111 are isolated from the second acoustic cavity 202 while connecting the first housing 10 and the sound-generating component 20. This simplifies the structure and improves the isolation effect, preventing the sound output from the first sound inlet 203 and the sound outlet 111 from being affected by the pressure relief of the second acoustic cavity 202 through the pressure relief hole 112, thereby improving the sound quality of the headphones 1.

[0097] Optionally, such as Figure 11 and Figure 12As shown, the sound-generating assembly 20 also includes a mounting bracket 27, with a mounting boss 271 located on the mounting bracket 27. The mounting bracket 27 also includes a bracket body 272 connected to the mounting boss 271 along the circumference of the sound-generating assembly 20 and arranged in an annular shape. The bracket body 272 is provided with two first support platforms 2701 that are opposite to each other along the axial direction (i.e., the direction of the axis Z). The outer end faces 250 of the two frames 25 near their respective diaphragms 22 are respectively supported on the corresponding first support platforms 2701. The mounting bosses 271 protrude from the bracket body 272 along the axial direction (i.e., the direction of the axis Z) and the radial direction RD of the sound-generating assembly 20, and are located on the outer side of the outer circumferential surface of the two frames 25. This configuration ensures the structural strength of the mounting boss 271 while providing sufficient space for the mounting boss 271 to accommodate the first sound inlet 203. Furthermore, the fact that the two frame frames 25 are respectively supported on the corresponding first support platform 2701 enhances the stability of the structure, thereby effectively improving the overall stability and reliability of the sound-generating component 20.

[0098] Optionally, such as Figure 10 and Figure 12 As shown, the mounting bracket 27 can be a plastic molded part, and the radial thickness R24 of the mounting boss 271 is between 0.2 and 0.7 mm. Optionally, the radial thickness R24 of the mounting boss 271 can be 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, etc., and of course, other values ​​are also possible. The mounting boss 271 includes a connecting bridge 2723 disposed along the width direction of the first sound-guiding hole 203 and connecting the long side hole along the 111c of the first sound-guiding hole 203. The first sound-guiding hole 203 is divided by the connecting bridge 2723 into at least two first sub-sound-guiding holes spaced apart from each other along the length direction of the first sound-guiding hole 203. The mounting bracket 27 can be made by injection molding, compression molding, etc., and of course, it can also be made by other molding methods. Of course, in other embodiments, such as Figure 13 As shown, the mounting boss 271 can be installed without the connecting bridge 2723, thus achieving a larger first acoustic port 203. Compared to... Figure 12 In the example shown, Figure 13 The circumferential size of the first sound hole 203 can be appropriately reduced to maintain structural strength, but since the connecting bridge 2723 is eliminated, the area of ​​the first sound hole 203 can still be increased, thereby improving the sound quality.

[0099] By reasonably setting the radial thickness R24 of the mounting boss 271, the radial dimension R20 of the sound-generating component 20 is not excessively increased while ensuring the space of the first sound hole 203, thereby achieving a compact overall size of the earphone 1. The setting of the connecting bridge 2723 facilitates the forming of the mounting bracket 27 and effectively improves the connection strength of the mounting boss 271, thereby effectively improving the effectiveness and reliability of the sound-generating component 20.

[0100] Alternatively, in some embodiments, such as Figure 11 and 12 As shown, the main body 272 of the bracket includes a support part 2721 and a limiting part 2722. The limiting part 2722 is connected to the support part 2721. The first support platform 2701 is disposed on the support part 2721. The limiting part 2722 protrudes from the first support platform 2701 along the axial direction (i.e., the direction of the axis Z) and is embedded in the basin frame 25 to limit the basin frame 25 along the radial direction RD of the sound-generating component 20.

[0101] Of course, in some other embodiments, the support body 272 may be provided with a recess (not shown). In other words, the limiting part 2722 is not protruding, but recessed, thus forming a recessed part in which part of the basin frame 25 is embedded to limit the basin frame 25 along the radial direction RD of the sound-generating component 20.

[0102] By setting a limiting part 2722 or a recessed part to limit the basket 25 on the radial RD of the sound-generating component 20, the structure is simple and stable, easy to assemble and disassemble, and improves the assembly efficiency while effectively improving the structural stability of the sound-generating component 20.

[0103] Optionally, such as Figure 11 and Figure 12 As shown, sealant 28 is provided between the outer end faces 250 of the two frame members 25 and the first support platform 2701, and between the inner circumferential surface of the mounting boss 271 and the outer circumferential surface of the two frame members 25. By providing sealant 28 at the above locations, the isolation effect of the first acoustic cavity 201 can be effectively improved, thereby improving the sound quality of the headphone 1. In addition, the sealant 28 has good elasticity, and during the assembly connection between the mounting boss 271 and the first housing 10, the sealant 28 can undergo a certain elastic deformation to make it fit better, thereby improving the stability and sealing of the connection between the mounting boss 271 and the first housing 10, which is beneficial to improving the sound quality of the headphone 1.

[0104] Optionally, such as Figure 11 and Figure 14 As shown, the basin stand 25 has a first chamfer 251 at the corner near the connection between the outer peripheral surface of the limiting part 2722 and the first support surface 2701 to form a first adhesive receiving groove 252. The support part 2721 has a second chamfer 2702 at the corner near the connection between the outer end face 250 of the basin stand 25 and the outer peripheral surface of the basin stand 25 to form a second adhesive receiving groove 2703.

[0105] By setting the first chamfer 251 and the second chamfer 2702 to form the first adhesive groove 252 and the second adhesive groove 2703, the amount of sealant 28 can be effectively increased. While improving the sealing and isolation effects, the amount of adhesive overflow can be effectively reduced, thereby reducing the possibility of interference with other components and helping to reduce assembly difficulty.

[0106] Optionally, such as Figure 11 As shown, the mounting boss 271 has a third chamfer 2704 at the corner near the outer periphery of the two frame members 25 to form a third adhesive receiving groove 2705. The third chamfer 2704 can further improve the adhesive capacity and the isolation effect of the first acoustic cavity 201. Optionally, the second chamfer 2702 and the third chamfer 2704 are connected to each other, so that the second adhesive receiving groove 2703 formed by the second chamfer 2702 and the third adhesive receiving groove 2705 formed by the third chamfer 2704 can communicate with each other, thereby allowing continuous application of adhesive, effectively simplifying the process and improving assembly efficiency.

[0107] Optionally, such as Figure 11 and Figure 14 As shown, the basin frame 25 is also provided with a second support platform 253. The second support platform 253 is located inside the outer end face 250 of the basin frame 25 along the radial direction RD of the sound-generating component 20, and is spaced apart from the outer end face 250 of the basin frame 25 along the axial direction (i.e., the direction of the axis Z). The mounting edge of the diaphragm 22 is supported on the second support platform 253, and the projection of the limiting part 2722 along the axial direction (i.e., the direction of the axis Z) at least partially falls on the second support platform 253.

[0108] By providing a second support platform 253 to support the diaphragm 22, and with the second support platform 253 located inside the outer end face 250 of the frame 25 along the radial direction RD of the sound-generating assembly 20, the connection stability of the diaphragm 22 is improved, thereby enhancing the reliability of the diaphragm 22's operation. Furthermore, the limiting portion 2722 is positioned such that its projection along the axial direction (i.e., the direction of axis Z) at least partially falls on the second support platform 253, achieving rational use of space and improving space utilization. While ensuring connection stability, this also helps to increase the size of the first acoustic cavity 201 along the radial direction RD of the sound-generating assembly 20, thereby improving the sound quality of the headphones 1.

[0109] Optionally, such as Figures 15 to 17As shown, there are multiple second sound holes 204 arranged at intervals along the circumference of the sound-generating assembly 20, and a pad 26 is provided on the frame 25 between two second sound holes 204. The distance from some of the second sound holes 204 to the pressure relief hole 112 is less than the distance from the pad 26 to the pressure relief hole 112. The pad 26 is used to receive electrical signals to enable the speaker 21 to perform corresponding operations. By arranging multiple second sound holes 204 along the circumference of the sound-generating assembly 20, the acoustic path of the sound output through the pressure relief hole 112 can be shortened, which is beneficial to improving the utilization rate of the second acoustic cavity 202 volume, improving pressure relief efficiency, and enhancing the sound quality of the earphone 1. Figure 15 The section corresponding to the cutting lines U to U shown is the reference section SF.

[0110] Optionally, the distance from the second sound-inlet 204 to the pressure relief hole 112 is no greater than 0.5 mm. More preferably, this distance is no greater than 0.3 mm. If the distance from the second sound-inlet 204 to the pressure relief hole 112 is too large, it will lead to a decrease in pressure relief performance, thereby affecting the sound quality of the earphone 1. By reasonably setting the distance from the second sound-inlet 204 to the pressure relief hole 112, the pressure relief efficiency can be effectively improved, which is beneficial to improving the sound quality of the earphone 1.

[0111] Optionally, such as Figure 16 As shown, the second sound inlet 204, which is adjacent to the pressure relief hole 112, and the pad 26 are arranged opposite to each other along the radial direction RD of the sound-generating component 20. This arrangement ensures that the operation of the pad 26 and the pressure relief operation of the headphone 1 do not interfere with each other, which is beneficial to improving the pressure relief performance of the headphone 1 and improving the sound quality of the headphone 1.

[0112] like Figure 16 and Figure 17 As shown, specifically, each of the two frame holders 25 is provided with solder pads 26 and a second sound inlet 204 spaced apart from each other along the circumference of the sound-generating assembly 20. Figure 12 and Figure 18 As shown, each basin frame 25 and mounting bracket 27 is provided with mutually cooperating limiting structures 200a and 200b. The limiting structures 200a and 200b are used to limit the basin frame 25 and mounting bracket 27 along the circumferential direction of the sound-generating assembly 20. The limiting structures 200a and 200b of the two basin frames 25 are arranged opposite each other along the axial direction (i.e., the direction of axis Z). Optionally, as... Figure 17 and Figure 18 As shown, the sound-generating assembly 20 has a radial plane RF arranged along the axial direction (i.e., the direction of axis Z) and passing through limiting structures 200a and 200b. The pads 26 on each frame 25 are mirror-arranged with respect to the radial plane RF, and the sound inlets on each frame 25 are mirror-symmetrical with respect to the radial plane RF.

[0113] By using limiting structures 200a and 200b to limit the two frames 25 along the circumference of the sound-generating assembly 20, relative rotation of the two speakers 21 is prevented, effectively improving the structural stability and reliability of the sound-generating assembly 20. Simultaneously, by mirroring the pads 26 and the second acoustic port 204 on each frame 25 relative to the radial plane RF, the directivity of the pads 26 and the second acoustic port 204 on the two frames 25 is made consistent, thereby improving the consistency of the acoustic characteristics of the two speakers 21 within the first accommodating cavity 110, which is beneficial for improving the sound quality of the headphones 1. Furthermore, by designing the two frames 25 with high structural consistency, the two speakers 21 can reuse the same frame 25 design, effectively reducing material and production costs.

[0114] Optionally, the limiting structures 200a and 200b are only one set. This arrangement makes the frame 25 mirror symmetrical with respect to the radial plane RF. When the two frames 25 are installed, they are installed with one side of the limiting structure 200a facing each other. The pads 26 on each frame 25 are also positioned opposite each other and located on the same side of the sound-generating assembly 20. This further makes the directivity of the pads 26 on the two speakers 21 consistent, thereby improving the consistency of the acoustic characteristics of the two speakers 21 in the first accommodating cavity 110, which is beneficial to improving the sound quality of the headphones 1.

[0115] Optionally, combined Figure 7 , Figure 19 and Figure 20 The first housing 10 may include a first rigid housing 11 and a second rigid housing 12. The first rigid housing 11 is connected to the ear hook 300. The first rigid housing 11 and the second rigid housing 12 enclose a first accommodating cavity 110. The sound outlet 111 is disposed on the second rigid housing 12.

[0116] By configuring the first rigid housing 11 to connect with the ear hook 300 and placing the sound outlet 111 on the second rigid housing 12, the integrity of the sound outlet 111 is effectively guaranteed, reducing the possibility of interference to the sound outlet 111, thereby improving the stability and reliability of the sound outlet 111's operation. This also reduces the difficulty of aligning the first rigid housing 11 and the second rigid housing 12, thus reducing the assembly difficulty of the sound-generating assembly 20 and improving its assembly efficiency. Furthermore, this configuration of the sound outlet 111 avoids simultaneously penetrating both the first and second rigid housings 11 and 12, preventing unevenness on the surface of the sound outlet 111 from affecting the installation of the tuning mesh and the steel mesh.

[0117] Optionally, such as Figure 19 and Figure 20As shown, the second rigid shell 12 has a protrusion 123 protruding from its end face 122, and the first rigid shell 11 has a groove 113 recessed from its end face 114. The protrusion 123 is embedded in the groove 113, and the sound outlet 111 is partially disposed on the protrusion 123. By setting the protrusion 123 and the groove 113, the connection between the first rigid shell 11 and the second rigid shell 12 is achieved, and the sound outlet 111 is partially disposed on the protrusion 123. This ensures the stability of the connection between the first rigid shell 11 and the second rigid shell 12, while also ensuring that the sound outlet 111 has sufficient length, which is beneficial to improving the sound output effect of the headphones 1 and improving the sound quality of the headphones 1.

[0118] Optionally, such as Figure 19 and Figure 20 As shown, the mounting boss 271 is located on the sound-generating assembly 20. Alternatively, the mounting boss 271 can also be located on the second rigid housing 12. A third support platform 115 is provided within the first rigid housing 11, which supports the sound-generating assembly 20 so that when the first rigid housing 11 and the second rigid housing 12 are fixed together, the sound-generating assembly 20 and the second rigid housing 12 abut against each other via the mounting boss 271. This arrangement simplifies the structure and assembly process, reduces assembly difficulty, and improves assembly efficiency.

[0119] Optionally, such as Figure 7 As shown, when the sound-generating component 20 and the second rigid housing 12 abut against each other via the mounting boss 271, the end face 114 of the first rigid housing 11 and the end face 122 of the second rigid housing 12 can maintain a certain gap along the abutment direction of the sound-generating component 20 and the second rigid housing 12. This arrangement ensures that when the sound-generating component 20 is abutted against by the first rigid housing 11 and the second rigid housing 12 for positioning and installation, a certain gap is maintained between the first rigid housing 11 and the second rigid housing 12 to compensate for assembly errors of the sound-generating component 20, thereby effectively improving the accuracy and stability of the positioning and installation of the sound-generating component 20. Furthermore, during the production and assembly process, the mounting boss 271 first abuts against the sound-generating component 20 and the second rigid housing 12, and then the first rigid housing 11 and the second rigid housing 12 are fastened together, thereby squeezing the sound-generating component 20 and the second rigid housing 12 to achieve further fixation, effectively improving the abutment effect and enhancing the connection stability of the earphone 1.

[0120] Optionally, the axial direction (i.e., the direction of axis Z) can be perpendicular to the contact direction of the sound-generating assembly 20 and the second rigid housing 12. Optionally, the magnetic circuit system 24 includes a magnetic guide shroud 241 protruding from the frame 25 and a magnet 242 disposed within the magnetic guide shroud 241. Figure 7 and Figure 19As shown, the third support platform 115 is configured to support the magnetic covers 241 of the two speakers 21 respectively. This configuration ensures that the sound-generating components 20 are installed and fixed without affecting the vibration of the diaphragm 22, and the structure is stable, which helps to extend the service life of the headphones 1.

[0121] Optionally, such as Figure 9 and Figure 15 As shown, the sound outlet 111 and the pressure relief hole 112 are respectively mirror-symmetrically arranged with respect to the symmetry plane SF arranged along the length direction of the ear hook 300.

[0122] By setting the sound outlet 111 and pressure relief hole 112, which are respectively mirror-symmetrical with respect to the symmetry plane SF, the aesthetics of the earphone 1 are improved, and the earphone 1 can be used for both the left and right ears at the same time, thereby effectively improving the compatibility of the earphone 1.

[0123] Optionally, such as Figure 4 As shown, the earphone 1 also includes a microphone 30. The first housing 10 is provided with an inlet hole 101 for guiding external sound to the microphone 30. The inlet hole 101 is arranged to intersect with the symmetry plane SF. The microphone 30 can be used to collect sound, allowing the earphone 1 to adapt to different usage scenarios such as playing music and making calls. By setting the inlet hole 101 to intersect with the symmetry plane SF, the effectiveness of the microphone 30 in collecting sound through the inlet hole 101 is ensured, while also allowing the earphone 1 to be used in both the left and right ears, effectively improving the adaptability of the earphone 1. Figure 4 The section lines V to V in the diagram correspond to the symmetry plane SF.

[0124] Optionally, the number of microphones 30 can be set to one or more, such as one, two, four, etc. When there is one microphone 30, the microphone 30 is positioned intersecting the plane of symmetry SF. When there are multiple microphones 30, the multiple microphones 30 are symmetrically distributed with respect to the plane of symmetry SF. This setting further enables the headset 1 to be used in both the left and right ears simultaneously, effectively improving the adaptability of the headset 1.

[0125] Optionally, such as Figure 21 As shown, Figure 21 This is a schematic diagram of the cross-sectional structure of the sound-generating part 100 with the plane of symmetry SF as the cross section. The minimum distance D10 between the sound outlet 111 and the pressure relief hole 112 is between 6.5 and 10 mm. Optionally, this minimum distance D10 is not less than 7 mm. Figure 21The cross-section is based on the plane of symmetry, SF. Acoustic short circuit refers to the situation where, when the diaphragm 22 of the speaker 21 moves forward or backward, the generated sound waves are out of phase, causing them to cancel each other out, resulting in a softer or unnatural sound. If the aforementioned interval distance D10 is too short, an acoustic short circuit may occur. By properly setting the interval distance D10 between the sound hole 111 and the pressure relief hole 112, the possibility of an acoustic short circuit can be effectively reduced, which is beneficial to improving the sound quality of the headphone 1.

[0126] Optionally, such as Figure 1 and Figure 17 As shown, the pressure relief hole 112 is oriented towards the helix, and the sound outlet hole 111 and the pressure relief hole 112 are separated from each other by the contact area between the first housing 10 and the ear EAR. This contact area can be the contact area between the first housing 10 and the antihelix or the concha cavity. By separating the sound outlet hole 111 and the pressure relief hole 112 by the first housing 10 and the contact area, the interference between the sound outlet hole 111 and the pressure relief hole 112 can be effectively reduced, thereby effectively improving the reliability of the earphone 1 and improving the sound quality of the earphone 1. It is also suitable for both the user's left and right ears, with high compatibility.

[0127] Optionally, such as Figure 9 and Figure 21 As shown, there is one sound outlet 111, which is arranged in a strip shape with a symmetrical plane along the length of the sound outlet 111 and perpendicular to the axial direction (i.e., the direction of axis Z). With this arrangement, when the earphone 1 is worn by the user, since the first shell 10 and the concha of the user's ear EAR are not completely fitted, but there is a space that gradually increases from the contact area between the first shell 10 and the ear EAR towards the ear canal opening, the sound output from the sound outlet 111 will be amplified by reflection within the concha, thereby increasing the sound pressure at the ear canal opening and allowing the user to hear a stronger sound.

[0128] Optionally, such as Figure 15 and Figure 21 As shown, there is one pressure relief hole 112, which is arranged in a strip shape. The symmetrical plane SF is arranged along the width direction of the pressure relief hole 112 and is perpendicular to the axial direction (i.e., the direction of the axis Z). This arrangement is to keep the pressure relief hole 112 as far away from the sound outlet hole 111 as possible, effectively reducing the possibility of acoustic short circuit and improving the sound quality of the headphone 1.

[0129] Optionally, such as Figure 22As shown, the pressure relief hole 112 includes a first hole portion 1121 and a second hole portion 1122 along the length direction of the pressure relief hole 112, and a third hole portion 1123 connected between the first hole portion 1121 and the second hole portion 1122. At least a portion of the width W1 of the first hole portion 1121 and at least a portion of the width of the second hole portion 1122 are greater than the width W3 of the third hole portion 1123. The widths of the first hole portion 1121, the second hole portion 1122, and the third hole portion 1123 refer to their dimensions in the width direction perpendicular to the length direction of the pressure relief hole 112. This arrangement increases the area of ​​the pressure relief hole 112 while effectively reducing the possibility of the pressure relief hole 112 being blocked by the ear helix or other ear EAR positions, which is beneficial for improving the pressure relief effect and thus improving the sound quality of the headphones 1. Moreover, this arrangement, while maintaining the pressure relief effect, does not require the pressure relief hole 112 to be set to its maximum width, making the size more moderate and also improving the aesthetics of the headphones 1.

[0130] Optionally, the symmetry plane SF is the symmetry plane of the ear hook 300. Specifically, the symmetry plane of the ear hook 300 refers to the plane set along the length of the ear hook 300, and the difference between the ear hook 300 portions on both sides of the symmetry plane is minimal or consistent. That is, if the ear hook 300 is regularly symmetrical, then the ear hook 300 portions on both sides of the symmetry plane are consistent. If the ear hook 300 is not strictly symmetrical, then the difference between the ear hook 300 portions on both sides of the symmetry plane SF should be minimal among various division methods. For example, the size of the difference can be distinguished by observing the projection of the ear hook 300 on a plane perpendicular to the symmetry plane.

[0131] Optionally, such as Figure 19 , 20 as well as Figure 23 As shown, the first housing 10 may further include a first flexible body 13. The first rigid housing 11 and the second rigid housing 12 enclose and form a first accommodating cavity 110, while the first flexible body 13 is disposed on the outer wall of the second rigid housing 12 and is used to contact the concha cavity. The plane containing the outermost ring of the end face of the first flexible body 13 is the first reference plane S13. The midpoint of the sound-generating component 20 along the axis Z or the axis Z of the sound-generating component 20 is located on the side of the first reference plane S13 facing the first rigid housing 11 and is parallel to the first reference plane S13.

[0132] The rigid material can be plastic, metal, or other materials that can be used as a support for the earphone shell 1, providing better support and stability for the internal structure of the first shell 10, such as the sound-generating component 20. A first flexible body 13 covers the outer wall of the second rigid shell 12. This first flexible body 13 can be made of silicone or other skin-friendly flexible materials to improve the comfort of the sound-generating part 100 when in contact with the wearer. Normally, when worn, the second rigid shell 12 faces the wearer's concha and comes into contact with the wearer. By covering the outer wall of the second rigid shell 12 with the first flexible body 13, the comfort of wearing the earphone 1 is improved. Furthermore, by placing the midpoint of the sound-generating component 20 along axis Z or the axis Z of the sound-generating component 20 on the side of the first reference plane S13 facing the first rigid shell 11, the center of the entire sound-generating component 20 can be closer to the first rigid shell 11. That is, when the first flexible body 14 is provided on the outer wall of the second rigid shell 12, the centroid of the first shell 10 and the centroid of the sound-generating component 20 do not coincide. The centroid of the sound-generating component 20 is more biased towards the first rigid shell 11 relative to the centroid of the first shell 10, thereby achieving the eccentric setting of the sound-generating component 20, thus making better use of the space inside the first rigid shell 11, which is beneficial to improving space utilization.

[0133] Optionally, the distance D13 from the midpoint of the sound-generating component 20 along axis Z or from axis Z to the first reference plane S13 is between 0.4 and 4 mm. This arrangement of the sound-generating component 20 within the first housing 10 allows more of its volume to be distributed within the first rigid housing 11, thus fully utilizing the relatively ample internal space of the first rigid housing 11 and enabling the first housing 10 to accommodate a larger sound-generating unit.

[0134] Optionally, the sound-emitting part 100 is configured to keep at least part of the ear canal open within the concha cavity, reducing the possibility of affecting sound transmission to the user's ear canal due to blockage of the ear canal, and facilitating sound reflection within the user's concha cavity to increase the listening volume.

[0135] In some embodiments, optionally, such as Figure 11 As shown, the ratio of the maximum axial dimension Z21 to the maximum radial dimension R20 of the sound-generating component 20 is between 0.8 and 1.3. Optionally, this ratio can be 0.9, 1, 1.1, 1.2, etc. In this way, the maximum axial dimension Z21 and the maximum radial dimension R20 of the sound-generating component 20 are very close, making the outer contour of the sound-generating component 20 closer to a sphere, effectively improving the structural compactness and integration of the sound-generating component 20, and effectively reducing assembly difficulty and improving assembly efficiency.

[0136] Optionally, the maximum radial dimension R20 of the sound-generating assembly 20 is set to the maximum radial dimension of the mounting bracket 27 or the frame 25, so that the mounting bracket 27 or the frame 25 acts as the main load-bearing component during assembly, effectively protecting the diaphragm 22 and the voice coil 23, and effectively improving the reliability and effectiveness of the sound-generating assembly 20. Optionally, the maximum axial dimension of the sound-generating assembly 20 is set to the maximum axial dimension between the magnetic shields 241 of the two speakers 21 along the axial direction (i.e., the direction of the Z-axis).

[0137] Optionally, in some embodiments, the resonant peak frequencies of the diaphragms 22 of the two speakers 21 are between 200 and 300 Hz, and the absolute difference between the resonant peak frequencies of the diaphragms 22 of the two speakers 21 is less than or equal to 50 Hz. This resonant peak can be the first resonant peak that appears during a frequency sweep from low to high frequencies. Specifically, the resonant peak frequency refers to the frequency of the first resonant peak that appears sequentially from low to high frequencies when an electroacoustic frequency sweep test is performed on the structure within the sound-generating part 100, such as the speakers 21, the first housing 10, and the internal cavity of the first housing 10. The location of this resonant peak corresponds to the position where the impedance curve of the sound-generating part 100 abruptly increases.

[0138] By setting the resonant peak frequency of the speaker 21 within a reasonable range, the speaker 21 can play a wider range of sound types and has better sound quality not only for human voices but also for music playback. Moreover, the absolute difference between the resonant peak frequencies of the two speakers 21 is less than or equal to 50Hz, which makes the consistency between the two speakers 21 high, and the sound quality of the headphones 1 is further improved.

[0139] In some embodiments, such as Figure 21 As shown, the sound outlet 111 is arranged in a strip shape and has a first end 111a and a second end 111b spaced apart along the length of the sound outlet 111. In the wearing state, the first end 111a is positioned towards the ear canal E11, and the distance D10 between the outer wall surface of the first housing 10 at the second end 111b and the inner wall surface of the concha E12 is less than the distance D10 between the outer wall surface of the first housing 10 at the first end 111a and the inner wall surface of the concha E12.

[0140] By setting the first end 111a of the first housing 10, which is the sound outlet 111, towards the ear canal, sound waves can enter the ear canal as much as possible through the sound outlet 111, effectively shortening the sound wave transmission path and improving the volume of the sound heard by the user, thus enhancing the sound quality of the headphones 1. Furthermore, by setting the distance D10 between the outer wall of the first housing 10 at the second end 111b and the inner wall of the concha E12 to be smaller than the distance D10 between the outer wall of the first housing 10 at the first end 111a and the inner wall of the concha E12, the curve formed by the outer ring of the speaker 21 cutting the first housing 10 and the concha can form a wedge-shaped space. When the sound outlet 111 is set along this curve, a tube-like structure can be formed between the sound outlet 111 and the concha. Using the concha E12 as a reflective wall surface can enhance sound wave reflection, thereby effectively increasing the sound pressure at the ear canal and increasing the listening volume.

[0141] Optionally, such as Figure 21 As shown, at the second end 111b and / or on the side of the second end 111b away from the first end 111a, the outer wall surface of the first housing 10 contacts the inner wall surface of the concha cavity. This arrangement can block sound from propagating away from the ear canal, and is more conducive to the first housing 10 and the concha cavity forming a horn structure that reflects sound towards the ear canal, thereby helping to reduce sound leakage of the earphone 1, effectively increase the sound pressure at the ear canal, and effectively increase the listening volume.

[0142] Optionally, such as Figure 21 As shown, the outer wall of the first housing 10 is configured such that the long side of the sound outlet 111 is arc-shaped along 111c, and the distance D10 between the outer wall of the first housing 10 and the inner wall of the concha gradually increases from the second end 111b to the first end 111a. This configuration allows sound to be reflected into the ear canal within the horn structure formed between the concha E12 and the outer wall of the first housing 10, rather than being reflected away from the ear canal, effectively improving the sound output of the earphone 1, effectively increasing the sound pressure at the ear canal, and effectively increasing the listening volume.

[0143] Optionally, such as Figure 21As shown, the arc-to-chord ratio of the long side of the sound outlet 111 along 111c is between 1.05 and 1.4, for example, it can be 1.1, 1.2, 1.3, etc. A symmetrical plane is provided along the length direction of the ear hook 300, and the arc-to-chord ratio of the long side of the sound outlet 111 along 111c is the arc-to-chord ratio of the projected profile of the long side of the sound outlet 111 along 111c on the symmetrical plane. In some embodiments, the arc length of the long side of the sound outlet 111 along 111c is 10 mm, and the chord length is 8.87 mm. Optionally, the width-to-length ratio of the sound outlet 111 is between 0.15 and 0.30, for example, 0.18, 0.20, 0.25, etc. Optionally, the length of the sound outlet 111 can be between 9 mm and 16.5 mm, for example, 10 mm, 12 mm, 13 mm, 14 mm, 16 mm, etc. In some embodiments, the inner width of the sound outlet 111 is 1.95 mm, the outer width is 2.58 mm, and the length of the sound outlet 111 is 12.9 mm. By reasonably setting the arc length, chord length, width, and length of the long side hole 111c of the sound outlet 111, the size of the sound outlet 111 is made to better match the size and shape of the concha and the ear canal, making it easier to form a horn structure to enhance sound, effectively improving the sound output effect of the earphone 1, effectively increasing the sound pressure at the ear canal, and effectively increasing the listening volume.

[0144] Optionally, the arc-to-chord ratio of the long side of the sound outlet 111 along 111c is between 1.05 and 1.4, or greater than or equal to 1.02 and less than 1.05. For example, the arc-to-chord ratio of the long side of the sound outlet 111 along 111c can be 1.02, 1.04, 1.05, 1.1, 1.2, 1.3, etc. Optionally, the length of the sound outlet 111 is between 9 and 16.5 mm, or greater than or equal to 5 mm and less than 9 mm. For example, the length of the sound outlet 111 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 12 mm, 13 mm, 14 mm, 16 mm, etc. By reasonably setting the arc-chord ratio of the long side hole 111c and the length of the sound hole 111, the size of the sound hole 111 is made to better match the size and shape of the concha and the ear canal, making it easier to form a horn structure to enhance the sound, effectively improving the sound output effect of the headphone 1, effectively increasing the sound pressure at the ear canal, and effectively increasing the listening volume.

[0145] Optionally, such as Figure 24As shown, when the sound-emitting part 100 and the abutment part 400 are placed simultaneously on a horizontal reference surface, the long side of the sound outlet 111, along its length 111c, forms a first reference point M with the horizontal reference surface between the first end 111a and the second end 111b. The second end 111b is located on the side of the first reference point M facing the abutment part 400, while the first end 111a is located on the side of the first reference point M away from the abutment part 400. This arrangement allows the first end 111a of the sound outlet 111 to be closer to the ear canal, while the first housing 10 near the second end 111b can abut against the concha cavity and be clamped by the abutment part 400 on both sides of the user's ear EAR. This achieves a stable clamping of the ear EAR while increasing the volume and sound pressure using the concha cavity. Furthermore, the portion of the first housing 10 that abuts against the concha cavity can further block sound from propagating away from the ear canal, which helps reduce sound leakage.

[0146] Optionally, the length D12 of the long side of the sound outlet 111 along its edge 111c between the first end 111a and the first reference point M is between 2 and 5.5 mm, for example, 2.55 mm, 3.56 mm, 4 mm, 4.76 mm, etc., and the length D13 of the long side of the sound outlet 111 along its edge 111c between the second end 111b and the first reference point M is between 4.5 and 8 mm, for example, 5.53 mm, 6 mm, 6.73 mm, 7.81 mm, etc. The above lengths refer to the distance between corresponding positions on the projected contour of the sound outlet 111 on the plane of symmetry. By reasonably setting the distances from the first end 111a and the second end 111b to the first reference point M, the enhancement effect of sound wave propagation from the concha E12 to the ear canal is further improved, effectively increasing the sound pressure at the ear canal and effectively increasing the listening volume.

[0147] Optionally, the arc-chord ratio of the long side hole of the sound outlet 111 between the first end 111a and the first reference point M is between 1.02 and 1.05, for example, 1.03 or 1.04. The arc-chord ratio of the long side hole of the sound outlet 111 between the second end 111b and the first reference point M is between 1.02 and 1.05, for example, 1.03 or 1.04. The above arc-chord ratios all refer to the arc-chord ratios between corresponding positions on the projected contour of the sound outlet 111 on the plane of symmetry. By reasonably setting the arc-chord ratio of the long side hole of the sound outlet 111 along 111c between the first end 111a and the second end 111b and the first reference point M, while adapting to the shape of the user's concha to ensure wearing comfort, the sound reflection effect of the horn structure formed by the outer wall surface of the first shell 10 and the concha is improved, effectively enhancing the listening volume and the user's experience.

[0148] Optionally, the arc-chord ratio of the long side of the sound outlet 111 between the first end 111a and the first reference point M is between 1.02 and 1.05, or greater than or equal to 1.001 and less than 1.02, for example, 1.001, 1.005, 1.01, 1.02, 1.03, 1.04, etc.; the arc-chord ratio of the long side of the sound outlet 111 between the second end 111b and the first reference point M is between 1.02 and 1.05, or greater than 1.05 and less than or equal to 1.07, for example, 1.03, 1.04, 1.05, 1.06, 1.07, etc. The above arc-chord ratios all refer to the arc-chord ratio between corresponding positions on the projected contour of the sound outlet 111 on the plane of symmetry. By reasonably setting the arc-chord ratio between the long side hole 111c of the sound hole 111 and the first reference point M at the first end 111a and the second end 111b, the sound reflection effect of the horn structure formed by the outer wall of the first shell 10 and the concha cavity is improved while adapting to the shape of the user's concha cavity to ensure wearing comfort, thus effectively improving the listening volume and the user's experience.

[0149] Optionally, such as Figure 24 As shown, the long side of the sound outlet 111 has a first normal direction F1 at the first reference point M, a second normal direction F2 at the first end 111a, and a third normal direction F3 at the second end 111b. The angle α1 between the first normal direction F1 and the second normal direction F2 is between 30° and 42°, and the angle α2 between the first normal direction F1 and the third normal direction F3 is between 50° and 60°. The angle α1 between the first normal direction F1 and the second normal direction F2 can be, for example, 32°, 35°, 37°, etc., and the angle α2 between the first normal direction F1 and the third normal direction F3 can be, for example, 53°, 55°, 57°, etc. All of the above angles refer to the angles between corresponding positions on the projected contour of the sound outlet 111 on the plane of symmetry. By reasonably setting the aforementioned angle, the sound reflection effect of the horn structure formed between the outer wall of the first housing 10 and the concha cavity is improved while ensuring the size of the sound outlet 111, thereby effectively improving the listening volume and the user's experience.

[0150] Optionally, such as Figure 24As shown, the long side of the sound outlet 111 has a first normal direction F1 at the first reference point M, the long side of the sound outlet 111 has a second normal direction F2 at the first end 111a, and the long side of the sound outlet 111 has a third normal direction F3 at the second end 111b. The angle α1 between the first normal direction F1 and the second normal direction F2 is between 30° and 42°, or greater than or equal to 15° and less than 30°; the angle α2 between the first normal direction F1 and the third normal direction F3 is between 50° and 60°, or greater than or equal to 25° and less than 50°. The angle α1 between the first normal direction F1 and the second normal direction F2 can be, for example, 15°, 20°, 25°, 30°, 32°, 35°, 37°, etc., and the angle α2 between the first normal direction F1 and the third normal direction F3 can be, for example, 25°, 30°, 35°, 40°, 50°, 53°, 55°, 57°, etc. All of the above angles refer to the angles between corresponding positions on the projected contour of the sound hole 111 on the plane of symmetry. By reasonably setting the above angles, while ensuring the spatial size of the sound hole 111, the sound reflection effect of the horn structure formed between the outer wall of the first housing 10 and the concha cavity is improved, effectively enhancing the listening volume and the user's experience.

[0151] Optionally, such as Figure 9 As shown, the sound outlet 111 has a center line along its length. The sound outlet 111 intersects with a reference section SF along the length of the ear hook 300, and the angle between the plane containing the center line and the reference section SF is between 0° and 45°. The sound outlet 111 is offset towards the earlobe. The center line can be a virtual curve that divides the sound outlet 111 into two equal parts along its length. Preferably, the sound outlet 111 intersects with the reference section SF along the length of the ear hook 300, and the angle between the plane containing the center line and the reference section SF is between 15° and 45°, for example, 20°, 30°, etc. In some embodiments, the reference section SF can coincide with the symmetry plane of the ear hook 300 along its length, and therefore the symmetry plane will also be labeled as symmetry plane SF in the following description. In this way, the reference section SF can be set along the length of the ear hook 300, and the differences between the ear hook 300 portions on both sides of the reference section SF are minimal or identical. Of course, in other embodiments, the reference section SF and the plane of symmetry of the ear loop are parallel to each other, but may be offset by a small gap.

[0152] By reasonably setting the angle between the center line of the sound outlet 111 and the reference section SF of the ear hook 300, the sound outlet 111 is set to be offset towards the earlobe. While ensuring the user's wearing comfort, this allows the sound output from the sound outlet 111 to propagate as much as possible to the ear canal, effectively improving the user experience of the headphones 1. Specifically, when the user wears the headphones 1 naturally, the headphones 1 may tilt downwards under the influence of gravity as the user moves. This setting allows the sound outlet 111 to be as close to the ear canal as possible even when the headphones 1 are tilted, effectively increasing the listening volume when the headphones 1 are tilted, thus improving the user experience.

[0153] Optionally, the plane containing the center line coincides with the reference section SF. Alternatively, the sound outlet 111 is mirror-symmetrical with respect to the reference section SF. This configuration allows the earphone 1 to be adapted to both the left and right ears for wearing and use, effectively improving the adaptability of the earphone 1 while ensuring user comfort.

[0154] Optionally, such as Figure 25 As shown, on the reference section SF, the sound-emitting part 100 has a second reference point N closest to the contact part 400. In some embodiments, in the natural state, the sound-emitting part 100 and the contact part 400 do not directly contact each other; in this case, the second reference point N is the intersection of the shortest line connecting the sound-emitting part 100 and the contact part 400 with the outer wall surface of the sound-emitting part 100, and the midpoint of this shortest line is O. In other embodiments, in the natural state, the sound-emitting part 100 and the contact part 400 are exactly in contact or the contact area is very small; in this case, the contact point between the sound-emitting part 100 and the contact part 400 is considered the second reference point N. In still other embodiments, in the natural state, the contact area between the sound-emitting part 100 and the contact part 400 is large; in this case, on the reference section SF, the midpoint of the arc corresponding to the contact area of ​​the outer wall surface of the sound-emitting part 100 and the contact part 400 is the second reference point N.

[0155] When worn, the inner contour of the ear hook 300 has a third reference point C furthest from the second reference point N in the area near the edge of the helix. The sound outlet 111 is located on the side of the second reference point N furthest from the third reference point C. On the outer wall surface of the sound-emitting part 100, the distance D13 from the second end 111b to the second reference point N is between 2.2 and 4.2 mm, and the distance from the first end 111a to the second reference point N is between 9 and 12.4 mm. The distance from the second end 111b to the second reference point N can be, for example, 2.3 mm, 2.6 mm, 2.9 mm, etc., and the distance from the first end 111a to the second reference point N can be 9.8 mm, 10.7 mm, 11.6 mm, etc., and of course, other values ​​are also possible. The above distances all refer to the distance between corresponding positions on the projected contour of the sound outlet 111 on the plane of symmetry.

[0156] Optionally, such as Figure 15 As shown, the pressure relief hole 112 is positioned towards the helix and intersects with the reference section SF, or the pressure relief hole 112 is positioned towards the helix and is mirror-symmetrical with respect to the reference section SF. This arrangement can ensure the pressure relief effect of the pressure relief hole 112 while effectively reducing the possibility of interference between the pressure relief hole 112 and the sound outlet hole 111, thereby effectively improving the stability and reliability of the headphone 1.

[0157] Optionally, such as Figure 1 and Figure 21 As shown, the pressure relief hole 112 and the sound outlet hole 111 are separated from each other by the contact area between the sound-emitting part 100 and the ear (e.g., the concha). By separating the sound outlet hole 111 and the pressure relief hole 112 by the sound-emitting part 100 and the contact area, the possibility of acoustic short circuit between the sound outlet hole 111 and the pressure relief hole 112 can be effectively reduced, thereby effectively improving the reliability of the headphone 1 and improving the sound quality of the headphone 1. It is also suitable for both the left and right ears of the user, with high compatibility.

[0158] Optionally, such as Figure 15 As shown, there is one pressure relief hole 112, which is arranged in a strip shape. The reference section SF is arranged along the width direction of the pressure relief hole 112 and intersects with the reference section SF. This arrangement ensures that the pressure relief area is sufficient to effectively guarantee the pressure relief effect of the pressure relief hole 112, while preventing the pressure relief hole 112 from extending too far towards the ear hook 300, which helps to improve the aesthetics of the earphone 1.

[0159] Optionally, there are two pressure relief holes 112, respectively disposed on both sides of the reference section SF. The pressure relief holes 112 are mirror-symmetrical with respect to the reference section SF, which is positioned along the width direction of the pressure relief hole 112 (that is, the reference section SF is parallel to the width direction of the pressure relief hole 112, with an allowable error within 15°). This arrangement ensures sufficient pressure relief area to effectively guarantee the pressure relief effect of the pressure relief hole 112, while preventing the pressure relief hole 112 from extending excessively towards the ear hook 300, thus improving the aesthetics of the earphone 1. Optionally, as... Figure 15 As shown, the pressure relief hole 112 is mirror-symmetrical with respect to the reference section SF. This not only enhances the aesthetics of the earphone 1, but also allows the earphone 1 to be worn in both the left and right ears, effectively improving the adaptability of the earphone 1.

[0160] Optionally, such as Figures 15 to 17As shown, the sound-generating component 20 is provided with at least one second sound-inlet 204 that communicates with the pressure relief hole 112 via the first accommodating cavity. The distance between the at least one second sound-inlet 204 and the pressure relief hole 112 is no greater than 0.5 mm, or greater than 0.5 mm and less than or equal to 4 mm. Optionally, the distance between the at least one second sound-inlet 204 and the pressure relief hole 112 is no greater than 3 mm. Optionally, the distance is no greater than 2 mm. Optionally, the distance is no greater than 0.4 mm. Optionally, the distance is no greater than 0.3 mm. If the distance between the sound-inlet and the pressure relief hole 112 is too large, it will lead to a reduction in pressure relief performance, thereby affecting the sound quality of the headphones 1. By reasonably setting the distance between the sound-inlet and the pressure relief hole 112, the pressure relief efficiency can be effectively improved, which is beneficial to improving the sound quality of the headphones 1.

[0161] Optionally, such as Figure 4 , Figures 19 to 21 As shown, the earphone 1 also includes a microphone 30. The first housing 10 is provided with an inlet hole 101 for guiding external sound to the microphone 30. The inlet hole 101 is intersected with the reference cross section SF. The microphone 30 can be used to collect sound, allowing the earphone 1 to adapt to different usage scenarios such as playing music and making calls. By setting the inlet hole 101 to intersect with the reference cross section SF, the effectiveness of the microphone 30 in collecting sound through the inlet hole 101 is ensured, while also allowing the earphone 1 to be used in both the left and right ears simultaneously, effectively improving the adaptability of the earphone 1. Figure 4 The section lines V to V in the diagram correspond to the reference section SF.

[0162] Optionally, the ear hook 300 provides an elastic force between the sound-emitting part 100 and the abutment part 400, so that the sound-emitting part 100 and the abutment part 400 have a clamping force F that holds them to both sides of the auricle when worn. Figure 26 As shown, the ear hook 300 is configured such that the sound-emitting part 100 and the abutting part 400 abut against each other in the natural state to form a preload force F0.

[0163] When worn, the ear hook 300 can undergo a certain elastic deformation to apply a certain elastic force to both sides of the user's auricle. Under the action of the elastic force, the sound-emitting part 100 and the abutment part 400 abut against both sides of the auricle to clamp the ear. However, if the elastic force provided by the ear hook 300 is too large, the clamping force F will be too large, which will cause discomfort to the ear; if it is too small, the clamping force F will be too small, making it difficult to wear stably.

[0164] According to Hooke's Law, the elastic force generated by elastic deformation is directly proportional to the deformation of the object; this ratio is called the elastic coefficient. To accommodate thinner ears, the elastic coefficient of the ear hook (300) is usually set relatively high. However, this can lead to excessive elastic force when the ear is thicker, causing pain and low wearing comfort. Furthermore, a high elastic coefficient results in significant variations in the clamping force (F) when adapting to different ear thicknesses, leading to large differences in user experience and poor compatibility. Figure 27 As shown, the clamping force variation line L1 indicates the absence of preload and a relatively large elastic coefficient, resulting in a change in the distance between the sound-generating part 100 and the abutment part 400 from X... s Change to X m The clamping force F is relatively large, and the change in clamping force ΔF1 is also relatively large. Based on this, by setting the ear hook 300 so that the sound-emitting part 100 and the abutting part 400 abut against each other in their natural state to form a pre-tightening force, the elastic coefficient of the ear hook 300 can be reduced. This results in a smaller change in the elastic force applied by the ear hook 300 when clamping ears of different thicknesses, effectively reducing the difference in clamping force F between ears of different thicknesses. This effectively improves the fit and wearing comfort of the earphone 1, allowing it to be worn by a wider range of users with different ear sizes. Figure 27 As shown, relative to the clamping force variation line L1, the clamping force variation line L2, based on the preload F0, extends from the distance X between the sound-generating part 100 and the abutment part 400. s Change to X m The clamping force F is relatively small, and the change in clamping force ΔF2 is also relatively small. Therefore, the above-mentioned technical effects can be effectively achieved, such as reducing the difference in clamping force F between ears with smaller and larger thicknesses, effectively improving the adaptability and wearing comfort of the earphone 1, so that the earphone 1 can be worn by a wider range of users with different ear sizes.

[0165] Based on extensive empirical research conducted by the applicant to improve the wearing comfort of Headphone 1, it was found that the ear thickness X of people with microtia is... s It is approximately 3.8mm, while the ear thickness of people with large ears is X m It is approximately 5.5mm. After obtaining this data, the applicant conducted corresponding research on the preload and elastic coefficient of the earphone 1.

[0166] Optionally, the elastic modulus of the ear hook 300 is set such that when the minimum interval between the sound-emitting part 100 and the abutment part 400 increases from 3.8 mm to 5.5 mm, the change in elastic force is less than or equal to 20 g / L, for example, it can be 5 g / L, 10 g / L, or 15 g / L. Figure 27As shown, with a preload F0, the distance between the sound-generating part 100 and the contact part 400 is X. m When the clamping force F is small, the change in clamping force ΔF2 is also small.

[0167] By reasonably setting the elastic coefficient, the elastic force changes little while meeting the clamping requirements. This ensures that the clamping force provided by the ear hook 300 is small when the earphone 1 clamps ears with different thicknesses, thus effectively improving the adaptability of the earphone 1 while ensuring wearing comfort.

[0168] Optionally, the elastic modulus and preload of the ear hook 300 are set such that when the minimum interval between the sound-generating part 100 and the abutment part 400 increases from 3.8 mm to 5.5 mm, the elastic force is between 25 g / L and 65 g / L, for example, 30 g / L, 40 g / L, 50 g / L, etc.

[0169] By reasonably setting the elastic coefficient and preload of the ear hook 300, a suitable elastic force is provided, thereby providing the user with a suitable clamping force F when wearing, which improves wearing comfort while ensuring wearing stability.

[0170] like Figure 28 As shown, the preload F0 can be measured by a thin-film pressure sensor 600, specifically by a clamping thin-film pressure sensor 600 located between the abutment portion 400 and the sound-emitting portion 100. In other embodiments, such as Figure 29 and Figure 30 The preload F0 can also be measured using force gauges / sensors 607 and 613. For example, by fixing one of the sound-generating part 100 and the abutment part 400, and pulling the other of the sound-generating part 100 and the abutment part 400 until they just come into contact / separate, or when the minimum distance between them is a small distance, the measured tension is the preload. This small distance is, for example, 0 to 0.8 mm.

[0171] like Figure 29 and Figure 30 As shown, the clamping force F can be measured when the sound-generating part 100 and the abutment part 400 are set horizontally. Specifically, the abutment part 400 is fixed by a force gauge / sensor, and the sound-generating part 100 is pulled to measure the force. For example, after the wire is attached to the housing of the sound-generating part 100, the displacement of the pulled wire is measured, for example, by 3.8 mm to 5.5 mm.

[0172] like Figure 29As shown, auxiliary plate 603 and corner bracket 601 are fixed in the X direction (without relative displacement in the X direction) by adhesives (e.g., quick-drying glue, hot melt glue, etc.) or other fixing methods that do not damage the structure of earphone 1. Auxiliary plate 604 and corner bracket 602 are also fixed in the X direction (without displacement in the X direction). Auxiliary plate 603 and auxiliary plate 604 are placed on a support platform with a low coefficient of friction in the X direction (e.g., a support platform on a lubricating oil interface or bearing support). The inner side of corner bracket 601 in the Y direction and the inner side of corner bracket 602 in the Y direction are tangent to the two sides of earphone 1 near the two ends of ear hook 300, thereby fixing earphone 1 between corner bracket 601 and corner bracket 602. Force gauge 607 is connected to corner bracket 602 in the X direction, for example, by fixing force gauge 607 and corner bracket 602 with screw 606. In some embodiments, the earphone 1 can be further secured by adhesives (e.g., quick-drying glue, hot melt glue, etc.) or other fixing methods that do not damage the structure of the earphone 1, such that the connection positions of the earphone 1 with the two corner brackets 601 and 602 are close to the horizontal direction. For example, as Figure 29 As shown, one side of the sound-emitting part 100 is fixedly connected to the corner bracket 601 at position A, and one side of the abutting part 400 is fixedly connected to the corner bracket 602 at position B. The line connecting positions A and B is approximately parallel to the X direction. During measurement, the auxiliary plate 604 is fixed, and the auxiliary plate 603 is moved by a pulling force in the X direction, causing the sound-emitting part 100 and the abutting part 400 to be separated. The magnitude of the pulling force is obtained by a force measuring instrument 607, and the distance between the auxiliary plate 603 and the auxiliary plate 604 is obtained by a vernier caliper, which is the distance between the sound-emitting part 100 and the abutting part 400.

[0173] like Figure 30 As shown, the abutment portion 400 is fixed between the two clamping plates by fastener 608. One end of the force measuring wire 612 is connected to the housing of the sound-generating portion 100 away from the abutment portion 400 by adhesive (e.g., quick-drying glue, hot melt glue, etc.). (For example, the force measuring wire 612 is connected to the sound-generating portion 100 at position C, and the symmetrical plane SF of the ear hook 300 can pass through position C). The other end of the force measuring wire 612 is connected to the force measuring instrument 614. The force measuring wire 612 is parallel to the X direction. During measurement, the force measuring instrument 614 is moved by a pulling force in the X direction, thereby pulling the sound-generating portion 100 to move, causing the sound-generating portion 100 and the abutment portion 400 to separate. The distance between the sound-generating portion 100 and the abutment portion 400 is obtained by vernier caliper 609, and the magnitude of the pulling force is obtained by force measuring instrument 14.

[0174] Optionally, the preload force is set between 1 g and 25 g, and the elastic coefficient of the ear hook 300 is set such that the elastic force is between 25 g and 48 g when the minimum interval is 3.85 mm, and between 26 g and 65 g when the minimum interval is 5.5 mm. Optionally, the width of the ear hook 300 can be between 3 and 10 mm, and the thickness can be between 0.5 and 5 mm. By reasonably setting the width and thickness parameters of the ear hook 300, the elastic force changes essentially linearly under usage conditions, and while satisfying clamping stability, wearing comfort is effectively improved, and the adaptability, wearing stability, and reliability of the earphone 1 are effectively enhanced.

[0175] Optionally, such as Figure 26 As shown, the earphone 1 may further include a magnetic coupling matching structure 50, which provides a magnetic coupling force between the sound-emitting part 100 and the abutment part 400. The magnetic coupling force and the elastic force work together to form a clamping force F. The trend of the magnetic coupling force changing with the minimum gap between the sound-emitting part 100 and the abutment part 400 is opposite to the trend of the elastic force changing with the minimum gap. For example, when the minimum gap between the sound-emitting part 100 and the abutment part 400 gradually increases, the elastic force gradually increases, and the magnetic coupling force gradually decreases. The magnetic coupling force provided by the magnetic coupling matching structure 50 can be used when the ear hook 300 is in its natural state, causing the sound-emitting part 100 and the abutment part 400 to abut against each other, or when the ear hook 300 is configured to be in its natural state, causing the sound-emitting part 100 and the abutment part 400 to separate from each other.

[0176] By setting up a magnetic coupling matching structure 50 to provide a magnetic coupling force, the magnetic coupling force can be combined with the elastic force to provide a more suitable clamping force F when worn. This can effectively reduce the change and fluctuation of the clamping force F when the minimum spacing changes, effectively improve wearing comfort, reduce the pre-tightening force required by the ear hook 300, and make the user's wearing process smoother.

[0177] Optionally, such as Figure 31As shown, the magnetic coupling matching structure 50 includes a first magnetic coupling matching member 51 disposed on the sound-emitting part 100 and a second magnetic coupling matching member 52 disposed on the abutment part 400. The first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 are magnetically attracted to each other. The first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can be magnets. The first magnetic coupling matching member on the sound-emitting part 100 can be the magnet 242 of the speaker 21, or it can be an additional magnet or other magnetic component. By disposing the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 on the sound-emitting part 100 and the abutment part 400 respectively, the magnetic attraction between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 provides a magnetic coupling force, thereby maintaining a moderate and stable clamping force with minimal fluctuations when clamping ear EARs with varying thicknesses, effectively improving wearing comfort. Optionally, the magnets can be arranged in a Helbeck array to increase the provided magnetic force, which is beneficial for improving wearing stability. Optionally, the magnet is disposed in the first flexible body 14 to avoid interference with other components and improve the integration and compactness of the headphone 1 structure.

[0178] When worn, the attractive force between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can compensate for the clamping force F between the sound-emitting part 100 and the abutment part 400. For example... Figure 31 As shown, the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can attract each other, generating an attractive force FA to compensate for the clamping force F provided by the ear hook 300 to the sound-emitting part 100 and the abutment part 400. That is, in the wearing state, the clamping force F includes the attractive force F. A And the elastic force F generated by the elastic deformation of the ear hook 300 k In some embodiments, the relationship between the distance and the attraction between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can be expressed by formula (1):

[0179]

[0180] Where K is a constant, m1 can represent the magnetic moment of the first magnetic coupling matching member 51, m2 can represent the magnetic moment of the second magnetic coupling matching member 52, d can represent the distance between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52, X0 can represent the distance between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 in the non-wearing state, and x can represent the increased distance between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 in the wearing state due to the movement of the sound-emitting part 100 and the abutment part 400.

[0181] As can be seen from formula (1), the greater the increase in distance X between the sound-emitting part 100 and the contact part 400, the greater the distance d between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52, and the greater the attraction F between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52.A The corresponding decrease.

[0182] In some embodiments, a force gauge and pads of different thicknesses (e.g., silicone pads, thick paper sheets, rubber pads, etc.) can be used to measure different attractive forces corresponding to different distances between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52. For example, the ear hook 300 of the earphone 1 can be cut off, and then either the sound-generating part 100 or the abutment part 400 can be fixed, while the other part of the sound-generating part 100 or the abutment part 400 can be connected to the force gauge. The sound-generating part 100, the abutment part 400, and the force gauge can be roughly referred to as... Figure 29 and Figure 30 Different thicknesses of padding material are placed between the sound-emitting part 100 and the abutment part 400 to control the distance between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52. Simultaneously, a force measuring instrument is used to measure the attractive force between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 when padding material of different thicknesses is placed. In some embodiments, the attractive force can be measured using a thin-film pressure sensor. Specifically, after cutting the ear hook 300, a thin-film pressure sensor and padding material of different thicknesses are placed between the sound-emitting part 100 and the abutment part 400, causing the thin-film pressure sensor to be compressed by the attractive force between the first magnetic coupling matching member 51 in the sound-emitting part 100 and the second magnetic coupling matching member 52 in the abutment part 400, thereby measuring the attractive force corresponding to different distances between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52.

[0183] In some embodiments, when not worn, the ear hook 300 can provide a preload force F0 to cause the sound-emitting part 100 to abut against the abutment part 400. A detailed description of the preload force can be found in the relevant descriptions above, and will not be repeated here.

[0184] In some embodiments, the sound-emitting part 100 and the abutment part 400 do not contact each other when not being worn. In the non-wearing state, the sound-emitting part 100 and the abutment part 400 do not contact each other, that is, there is no pre-tightening force between the sound-emitting part 100 and the abutment part 400 to make them abut against each other.

[0185] In some embodiments, when worn, the clamping force F between the sound-emitting part 100 and the abutment part 400 includes the elastic force F generated by the elastic deformation of the ear hook 300. k The attraction F between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 A In some embodiments, the clamping force F may further include the preload force F0 provided by the ear loop 300 for the abutment of the sound-emitting part 100 and the abutment part 400.

[0186] As mentioned above, to ensure the stability of the earphone 1 on the wearer's ear, the clamping force F (i.e., the sum of elastic force and attractive force, or the sum of elastic force, attractive force, and preload) needs to be greater than the lower limit of the clamping force corresponding to the minimum ear thickness. Furthermore, it is necessary to ensure that the clamping force is less than the upper limit of the clamping force corresponding to the maximum ear thickness to avoid discomfort for users with thicker ears. In some embodiments, when the distance between the housing of the sound-emitting part 100 and the abutment part 400 is between 3.5mm and 5.6mm or 3.8mm and 5.5mm, the clamping force F (i.e., the sum of elastic force and attractive force, or the sum of elastic force, attractive force, and preload) can be between 0.20N and 0.70N. For example, the clamping force (i.e., the sum of elastic force and attraction force, or the sum of elastic force, attraction force, and preload) provided by the ear hook 300 can be determined to be between 0.20N and 0.70N based on the lower limit of clamping force corresponding to the minimum auricle thickness (0.20N) and the upper limit of clamping force corresponding to the maximum auricle thickness (0.70N). In some embodiments, when the distance between the housing of the sound-emitting part 100 and the abutment part 400 is between 3.8mm and 5.5mm, the clamping force F (i.e., the sum of elastic force and attraction force, or the sum of elastic force, attraction force, and preload) can be between 0.25N and 0.65N. Again, for example, the clamping force (i.e., the sum of elastic force and attraction force, or the sum of elastic force, attraction force, and preload) provided by the ear hook 300 can be determined to be between 0.25N and 0.65N based on the lower limit of clamping force corresponding to the minimum auricle thickness (0.25N) and the upper limit of clamping force corresponding to the maximum auricle thickness (0.65N).

[0187] As mentioned above, the greater the distance X between the sound-emitting part 100 and the contact part 400, the greater the elastic force F provided by the ear hook 300. k The larger the magnetic coupling element 51, the greater the attraction F between the first magnetic coupling element 51 and the second magnetic coupling element 52. A The smaller the value, the greater the difference between the clamping force F experienced by the microtonic user and the macrotonic user, based on the attractive force between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52. For example, by limiting the clamping force F to between 0.3N and 0.5N, the difference between the clamping force experienced by the microtonic user and the macrotonic user is reduced to 0.20N. In some embodiments, when the distance between the housing of the sound-emitting part 100 and the abutment part 400 is between 3.8mm and 5.5mm, the change in clamping force F does not exceed 0.20N. Therefore, as... Figure 27 As shown, to ensure a small difference between the clamping force experienced by users with small ears and those with large ears, the clamping force can be determined based on the minimum ear thickness Xs, a set lower limit of clamping force F1, and the maximum ear thickness Xs. mThe upper limit of the clamping force F3 is set to limit the change of clamping force to no more than 0.20N (i.e., the difference between F3 and F1) when the distance between the sound-emitting part 100 and the abutment part 400 varies between 3.8mm and 5.5mm.

[0188] In some embodiments, when the distance between the sound-emitting part 100 and the abutment part 400 is between 3.8 mm and 5.5 mm, the change in the attractive force between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can be between 0.05 N and 0.10 N.

[0189] like Figure 32 As shown, the clamping force F includes the elastic force F0. k and attraction F A The initial distance between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 is X0. Elastic force F k It equals kX, where k is the elasticity coefficient and X is the distance between the sound-emitting part 100 and the contact part 400. Attractiveness F A It can be calculated based on the formula (1) mentioned above. When the distance between the sound-emitting part 100 and the contact part 400 is between X1 and X2, the elastic force F k In F sk To F mk Between, attraction F A In F ma To F sa Between, the clamping force F is at F s To F m Between, of which, F s =F ma +F sk F m =F mk +F sa For example, when the distance between the sound-emitting part 100 and the abutting part 100 is between 3.8mm and 5.5mm, the corresponding elastic force is between 0.27N and 0.35N. To ensure that the clamping force is between 0.3N and 0.4N, the compensating attractive force needs to be between 0.03 (0.3~0.27=0.03)N and 0.05 (0.4~0.35=0.05)N. Figure 13 It can be seen that by setting appropriate magnetic coupling parameters (K, m1, m2, X0) and elastic coefficients k, F can be achieved within the range of X1 to X2. k The increase and decrease of FA roughly cancel each other out or largely cancel each other out, keeping the total clamping force F basically stable within the range of X1 to X2, thus ensuring that the user experience provided by the earphone 1 is consistent for users with different ear thicknesses. The range of X1 to X2 includes, for example, 3.8mm to 5.5mm.

[0190] In some embodiments, the ear loop 300 further provides a preload F0, which can be adjusted by changing the preload F0 and the attraction force F. A The magnitude of the clamping force is determined to keep the total clamping force F within a suitable range. For example... Figure 33 As shown, the ear hook 300 can simultaneously provide an elastic force F k Preload F0 and attractive force F A At this point, the clamping force F for 300 pairs of large-ear users has exceeded the upper limit of the preload force. The clamping force F can be reduced from F01 to F02 to achieve the clamping force within the minimum ear thickness X. s and maximum ear thickness X m Within the range, the curve corresponding to the clamping force F is relatively flat, and within a suitable clamping force range, it indicates that the combination of pre-tightening force and attraction force can improve the wearing stability and comfort of clip-on headphones, and reduce the clamping force difference between users with large ears and users with small ears.

[0191] Optionally, the elastic force and magnetic coupling force are configured such that when the minimum distance between the sound-generating part 100 and the abutment part 400 increases from 3.85 mm to 5.5 mm, the clamping force is between 25 gf and 65 gf, for example, 30 gf, 40 gf, 50 gf, 60 gf, etc. It should be noted that 1 gf represents the weight of an object weighing 1 gram.

[0192] By rationally setting elastic and magnetic coupling forces, a consistent clamping force is provided for users with different ear sizes during wear, ensuring wearing stability while improving wearing comfort.

[0193] Optionally, the magnetic coupling force is set such that when the minimum distance between the sound-generating part 100 and the abutment part 400 increases from 3.8mm to 5.5mm, the change in magnetic coupling force is greater than or equal to 20 gf. This setting allows for a relatively large change in magnetic coupling force, which in turn allows for a relatively small change in elastic force. Consequently, the elastic coefficient of the ear hook 300 can be set relatively small, which is beneficial for improving the stability and reliability of wearing the earphone 1.

[0194] Optionally, such as Figure 34 As shown, the ear hook 300 includes an elastic sheet 301. Both ends of the elastic sheet 301 along its length are fixed relative to the sound-generating part 100 and the abutment part 400, respectively. The ratio of the width W31 to the thickness K31 of the elastic sheet 301 is 8 to 12, for example, 9, 10, 11, etc. In some embodiments, the width W31 of the elastic sheet 301 is between 1 and 3 mm, for example, 2 mm, and the thickness K31 is between 0.1 and 0.3 mm, for example, 0.15 mm, 0.2 mm, 0.25 mm, etc.

[0195] By incorporating an elastic sheet 301 to provide elastic force, the earphone 1 is clamped and worn. By appropriately setting the width-to-thickness ratio, the ear hook 300 is ensured to have sufficient strength while meeting the elastic force requirements, allowing the earphone 1 to achieve both wearing comfort and stability. Furthermore, appropriately setting the width and thickness of the elastic sheet 301 reduces the torque on it, preventing torsion, and also makes the change in the provided elastic force more linear, effectively improving wearing comfort. The elastic sheet 301 can be, for example, a titanium sheet, with an outer coating of flexible materials such as silicone, rubber, elastic resin, polyurethane, polydimethylsiloxane, PVC, or TPE to enhance wearing comfort.

[0196] Optionally, the earphone 1 also includes a flexible printed circuit board (FPC), wherein the FPC is arranged along the length of the elastic sheet 301 and disposed on the elastic sheet 301, thereby effectively reducing the wiring difficulty on the earphone 1. For example, the FPC can be arranged approximately against the upper or lower surface of the elastic sheet 301. Connecting blocks 2332 can be provided at both ends of the elastic sheet 301, and the connecting blocks 2332 at both ends can be connected to the sound-emitting part 100 and the abutment part 400 respectively. A notch 2330 extending through the width of the elastic sheet 301 to the side edge of the elastic sheet 301 is provided near the connecting blocks 2332. This notch 2330 facilitates sealing and improves the injection molding effect.

[0197] Optionally, such as Figure 35 As shown, the earphone 1 has a reference section SF, which is set along the length of the ear hook 300. In the wearing state, the reference section is nearly parallel to the horizontal plane of the human body. Within the reference section, the ear hook 300, the sound-emitting part 100, and the abutment part 400 have an inner contour, which includes at least reference points C, E, and H.

[0198] When worn, reference point C is located on the inner contour of the ear hook 300 and corresponds to the edge of the helix (e.g., the top / outermost edge of the helix). Reference point C can also be a turning point of the inner contour; for example, the inner contour 300 is a contour line that protrudes away from the helix E17. The radius of curvature of the portion of the inner contour 300 located near the edge of the helix gradually increases, decreases, and then increases again from reference point C towards the sound-emitting part 300 and the contact part 400.

[0199] In some embodiments, in the natural state, the outer wall surfaces of the sound-emitting part 210 and 400 do not come into contact, and the outer wall surface of the sound-emitting part 100 and the outer wall surface of the contacting part 400 have the shortest distance between them, with the midpoint of the line connecting these two shortest distances being point O. If, in the natural state, the outer wall surfaces of the sound-emitting part 210 and 400 come into contact, the length of the shortest line connecting them is nearly zero. In this case, reference point O should be the midpoint of the arc formed by the contact area between the outer wall surfaces of the sound-emitting part 210 and 400. Reference point C is the reference point in the inner contour that is furthest from point O. Reference point L is the position of the sound-emitting part 100 closest to reference point C. Reference point K is the position of the sound-emitting part 100 furthest from reference point C.

[0200] Optionally, such as Figure 35 As shown, 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. In its natural state, the length of line CE is between 16 and 19 mm, the length of line CH is between 6.5 and 9.0 mm, the included angle between line CE and line CH is between 72° and 88°, the inner contour between reference point C and reference point E is located outside the line CE, and the inner contour between reference point C and reference point H is located outside the line CH.

[0201] In the experience of wearing and using the clip-on earphone 1, if the inner contour of the earphone 1 comes into contact with the ear helix, it will greatly affect the wearing comfort of the earphone 1 during long-term use and affect the user's experience.

[0202] If the angle between line CE and line CH is too small, the inner contour of earphone 1, especially the inner contour between reference points C and E, and between reference points C and H, will not be able to bypass the helix as much as possible. If the angle is too large, it will increase the overall structural size of earphone 1 and affect its overall aesthetics. Therefore, the angle between line CE and line CH is set in the range of 72° to 88° to ensure that the inner contour of earphone 1 can bypass the helix as much as possible, reducing the contact between the inner contour of earphone 1 and the helix, thereby effectively improving the wearing comfort and aesthetics of earphone 1. For example, in some embodiments, the angle between line CE and line CH can be set to 80°.

[0203] Furthermore, if the length of the connecting wire CE is too small, the sound-emitting part 100 will not be able to extend into the concha cavity, affecting the sound quality of the headphone 1, or the inner contour of the headphone 1, especially at the reference point C, will contact the helix after the sound-emitting part 100 extends into the concha cavity. If it is too large, it will increase the overall structural size of the headphone 1 and affect its aesthetics. Therefore, the length of the connecting wire CE is set in the range of 16-19mm. This ensures that the sound-emitting part 100 can be stably extended into the concha cavity while ensuring that the inner contour and the sound-emitting part 100 do not contact the helix E17. This effectively improves the wearing comfort and aesthetics of the headphone 1200, while also effectively improving the sound transmission quality of the headphone 1. Furthermore, if the length of the connecting wire CH is too short, the contact portion 400 will come into contact with the auricle; if it is too long, it will increase the overall structural size of the earphone 1 and affect its aesthetics. Therefore, setting the length of the connecting wire CH to 6.5–9.0 mm better ensures that the inner contour of the earphone 1 can bypass the auricle as much as possible, ensuring that the inner contour of the earphone 1 and the contact portion 400 do not come into contact with the auricle, thereby effectively improving the wearing comfort of the earphone 1. For example, in some embodiments, the length of the connecting wire CE is set to 17.13 mm, and the length of the connecting wire CH is set to 7.59 mm.

[0204] Optionally, the arc-to-chord ratio of the inner contour between reference point C and reference point E is between 1.02 and 1.20. Optionally, the arc-to-chord ratio of the inner contour between reference point C and the third reference point H is between 1.05 and 1.23.

[0205] Specifically, the arc-to-chord ratio of the inner contour between reference points C and H refers to the ratio of the actual length of the inner contour between reference points C and H to the length of the connecting line CE. For example, in some embodiments, the inner contour is a curved profile, and the arc-to-chord ratio of the inner contour between reference points C and E is the ratio of the arc length of the inner contour between reference points C and E to the length of the connecting line CE. It is worth noting that in this embodiment, the inner contour between reference points C and E is a continuous arc protruding away from the connecting line CE. In other embodiments, the inner contour may not be a curve; it may be a multi-segment broken line, etc.

[0206] In this case, if the arc-to-chord ratio of the inner contour between reference points C and E is too small, the inner contour between reference points C and E will be too straight, which is not conducive to the inner contour wrapping around the auricle. If the arc-to-chord ratio of the inner contour between reference points C and E is too large, the inner contour between reference points C and E will be too curved, affecting the overall aesthetics of the earphone 1. Therefore, the arc-to-chord ratio of the inner contour between reference points C and E is set in the range of 1.02 to 1.20, so that the inner contour between reference points C and E wraps around the auricle as much as possible and does not contact the auricle, thereby effectively improving the wearing comfort of the earphone 1 and also effectively improving the aesthetics of the earphone 10. For example, in some embodiments, the arc-to-chord ratio between reference points C and E can be set to 1.1.

[0207] Optionally, between reference points L and K and towards the abutment portion 400, the arc-to-chord ratio of the outer wall surface of the sound-emitting portion 100 is between 1.4 and 1.7. This arrangement makes the sound-emitting portion 100 more spherical towards the abutment portion 400. Specifically, between reference points L and K and towards the abutment portion 400, the outer wall surface of the sound-emitting portion 100 is a continuous arc-shaped surface convex towards the abutment portion 400. For example, in some embodiments, the arc-to-chord ratio of the outer wall surface of the sound-emitting portion 100 between reference points L and K and towards the abutment portion 400 can be set to 1.64.

[0208] Optionally, a line CL is formed between reference point C and reference point L. The line CL is located between the line CE and the line CH. The length of the line CL is between 13 and 17 mm, and the angle between the line CL and the line CE is between 15° and 27°.

[0209] Specifically, reference point L is a special point on the sound-emitting part 100 closest to reference point C. Therefore, the angle between the connecting line CL and the connecting line CE determines to some extent whether the sound-emitting part 100 can be fully placed in the concha cavity. The length of the connecting line CL determines to some extent whether the inner contour of the earphone 1 can avoid contact with the auricle when the sound-emitting part 100 is fully placed in the concha cavity. Therefore, the length of the connecting line CL is set between 13 and 17 mm, and the angle between the connecting line CL and the connecting line CE is set between 15° and 27°. Based on this, the sound-emitting part 100 can be fully placed in the concha cavity without the inner contour contacting or pressing with the auricle, thereby effectively improving the wearing comfort of the earphone 1 and also effectively improving the sound transmission quality of the earphone 1. For example, in some embodiments, the length of the third connecting line is set to 15 mm, and the angle between the connecting line CL and the connecting line CE is set to 21°.

[0210] Optionally, a line CK is formed between reference point C and reference point K. The line CK is located between the line CE and the line CH. The length of the line CK is between 24 and 30 mm, and the angle between the line CK and the line CE is between 13° and 25°.

[0211] When the earphone 1 is worn, the reference point K is closest to the ear canal. If the reference point K is too close to the ear canal, it will block the ear canal, affecting the user experience. If the reference point K is too far from the ear canal, it will affect the sound transmission effect of the earphone 1. Therefore, the length of the connecting wire CK is set between 24 and 30 mm, and the angle between the connecting wire CK and the connecting wire CE is set between 13° and 25°. Based on this, when the sound-emitting part 100 is inserted into the concha, the area of ​​the sound-emitting part 100 near the reference point K maintains a relatively moderate distance from the ear canal, thereby effectively preventing the sound-emitting part 100 from blocking the ear canal and effectively improving the sound transmission effect of the earphone 1. For example, in some embodiments, the length of the connecting wire CK can be set to 27.7 mm, and the angle between the connecting wire CK and the connecting wire CE can be set to 20°.

[0212] Optionally, such as Figure 35 As shown, along the inner contour, there are arc segments T1T2 between two points 6mm away from reference point C on either side of reference point C. The arc-to-chord ratio of arc segment T1T2 is between 1.03 and 1.10. This design effectively reduces stress concentration, improves the service life and reliability of the ear hook 300, and helps ensure the wearing stability of the earphone 300.

[0213] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. An earphone, characterized by comprising: The earphone comprises a sound generating part, an abutting part and an ear hook, the ear hook connects the sound generating part and the abutting part, the sound generating part is used for converting electrical signals into sound signals and playing, the abutting part is provided with a battery, in a wearing state, the sound generating part and the abutting part form a clamping state on both sides of the user's anthelix, and the sound generating part is located in the concha cavity, the sound generating part comprises a first shell and a sound generating assembly, a first accommodating cavity is formed, the sound generating assembly is arranged in the first accommodating cavity, the first shell is provided with a sound outlet hole, the sound generated by the sound generating assembly is output through the sound outlet hole, the sound outlet hole is arranged in a strip shape and has a first end and a second end arranged at intervals along the length direction of the sound outlet hole, in the wearing state, the first end is arranged towards the ear hole, and the distance between the outer wall surface of the first shell at the second end and the inner wall surface of the concha cavity is smaller than the distance between the outer wall surface of the first shell at the first end and the inner wall surface of the concha cavity.

2. The earphone of claim 1, wherein, The outer wall surface of the first shell and the inner wall surface of the concha cavity are in contact with each other at the second end and / or the side away from the first end of the second end.

3. The earphone of claim 2, wherein The outer wall surface of the first shell is arranged such that the long side hole of the sound outlet hole is arranged in an arc shape, and the distance between the outer wall surface of the first shell and the inner wall surface of the concha cavity gradually increases in the direction from the second end to the first end.

4. The earphone of claim 2, wherein The arc chord ratio of the long side hole of the sound outlet hole is between 1.05 and 1.4, or greater than or equal to 1.02 and less than 1.

05.

5. The earphone of claim 3, wherein The width-length ratio of the sound outlet hole is between 0.15 and 0.

30.

6. The earphone of claim 3, wherein, The length of the sound outlet hole is between 9 and 16.5 mm, or greater than or equal to 5 mm and less than 9 mm.

7. The earphone of claim 3, wherein When the sound generating part and the abutting part are placed on a horizontal reference surface at the same time, the long side hole of the sound outlet hole forms a first reference point with the horizontal reference surface between the first end and the second end, the second end is located on the side of the first reference point towards the abutting part, and the first end is located on the side of the first reference point away from the abutting part.

8. The earphone of claim 7, wherein, The length of the long side hole of the sound outlet hole between the first end and the first reference point is between 2 and 5.5 mm, and the length of the long side hole of the sound outlet hole between the second end and the first reference point is between 4.5 and 8 mm.

9. The earphone of claim 8, wherein, The arc chord ratio of the long side hole of the sound outlet hole between the first end and the first reference point is between 1.02 and 1.05, or greater than or equal to 1.001 and less than 1.02; and the arc chord ratio of the long side hole of the sound outlet hole between the second end and the first reference point is between 1.02 and 1.05, or greater than 1.05 and less than or equal to 1.

07.

10. The earphone of claim 8, wherein, The long-hole side of the sound outlet hole has a first normal direction at the first reference point, the long-hole side of the sound outlet hole has a second normal direction at the first end, and the long-hole side of the sound outlet hole has a third normal direction at the second end, the included angle between the first normal direction and the second normal direction is between 30°-42°, or greater than or equal to 15° and less than 30°; the included angle between the first normal direction and the third normal direction is between 50°-60°, or greater than or equal to 25° and less than 50°.

11. The earphone of claim 3, wherein, The sound outlet hole has a center line arranged along the length direction thereof, the sound outlet hole is arranged intersecting a reference cross section arranged along the length direction of the ear hook, and the included angle between the plane where the center line is located and the reference cross section is between 0-45°, and the sound outlet hole is biased towards the direction of the ear lobe.

12. The earphone of claim 11, wherein, The plane where the center line is located and the reference cross section coincide with each other; or the sound outlet hole is mirror-symmetric with respect to the reference cross section.

13. The earphone according to claim 11 or 12, characterized in that, On the reference cross section, the sound generating part has a second reference point closest to the abutting part, the inner contour of the ear hook has a third reference point farthest from the second reference point in the area close to the helix edge in the wearing state, the sound outlet hole is located on the side of the second reference point away from the third reference point, and on the outer wall surface of the sound generating part, the distance from the second end to the second reference point is between 2.2-4.2mm, and the distance from the first end to the second reference point is between 9-12.4mm.

14. The earphone of claim 11 or 12, wherein, The sound generating part is further provided with a pressure relief hole, the pressure relief hole is arranged towards the helix, and the pressure relief hole is arranged intersecting the reference cross section or the pressure relief hole is mirror-symmetric with respect to the reference cross section.

15. The earphone of claim 14, wherein, The pressure relief hole and the sound outlet hole are spaced from each other by the contact area of the sound generating part with the concha cavity.

16. The earphone of claim 15, wherein, The number of the pressure relief hole is one, and the pressure relief hole is arranged in a strip shape, the reference cross section is arranged along the width direction of the pressure relief hole, and intersects the pressure relief hole.

17. The earphone of claim 15, wherein, The number of the pressure relief hole is two, and the pressure relief hole is arranged on both sides of the reference cross section and is mirror-symmetric with respect to the reference cross section, and the reference cross section is arranged along the width direction of the pressure relief hole.

18. The earphone of claim 15, wherein, The pressure relief hole comprises a first hole part and a second hole part along the length direction of the pressure relief hole, and a third hole part connected between the first hole part and the second hole part, wherein the width of at least part of the positions of the first hole part and the second hole part is greater than the width of the third hole part.

19. The earphone of claim 15 or 17, wherein, The sound generating assembly is provided with a sound guide hole communicating with the pressure relief hole through the first accommodating cavity, the distance between the sound guide hole and the pressure relief hole is not greater than 0.5mm, or greater than 0.5mm and less than or equal to 4mm.

20. The earphone of claim 11 or 12, wherein, The earphone further comprises a microphone, and the first shell is provided with a sound inlet hole for guiding external sound to the microphone, and the sound inlet hole is arranged intersecting the reference cross section.

21. The earphone of claim 1, wherein, The sound production assembly comprises two loudspeakers, each of which comprises a diaphragm, the two loudspeakers are assembled with each other along an axial direction to form a first acoustic cavity between the two loudspeakers, the sound production assembly is provided with a first sound guide hole which communicates the sound outlet hole and the first acoustic cavity, the sound outlet hole and the first sound guide hole communicate with each other along a radial direction of the sound production assembly, the first sound guide hole is further provided in a strip shape, and a length direction of the sound outlet hole and the first sound guide hole is provided along a circumferential direction of the sound production assembly.

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