Earphone

Abstract

The invention discloses an earphone which 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, and the ear hook provides elastic acting force between the sound production part and the abutting part, so that the sound production part and the abutting part have clamping force for clamping the two sides of the auricle in a wearing state. Wherein the ear hook is arranged to enable the sound production part and the abutting part to abut against each other in a natural state so as to form a pre-tightening force. Through the above mode, the adaptability of the earphone can be improved.

Description

earphone

Technical field

[0001] The present application relates to the technical field of electronic devices, and in particular to headphones. [Background Technology]

[0002] Headphones are widely used in our daily lives, working with electronic devices like mobile phones and computers to provide users with sound playback. Clip-on earphones are a new type of headphone. They are typically compact and clip onto the wearer's earlobe. They also don't block the ear canal, ensuring safety when used outdoors and offering greater comfort compared to in-ear headphones.

[0003] However, current ear clip-on headphones have low adaptability.

[0004] [Summary of the invention]

[0005] The present application provides an earphone, which includes a sound-emitting part, an abutting part and an ear hook, wherein the ear hook connects the sound-emitting part and the abutting part, and the ear hook provides an elastic force between the sound-emitting part and the abutting part so that the sound-emitting part and the abutting part have a clamping force on both sides of the auricle when worn, wherein the ear hook is configured so that the sound-emitting part and the abutting part abut against each other in a natural state to form a pre-tightening force.

[0006] In some embodiments, the elastic coefficient and preload force of the ear hook are set so that when the minimum distance between the sound-emitting portion and the abutting portion increases from 3.8 mm to 5.5 mm, the change in the elastic force is less than or equal to 20 g-f.

[0007] In some embodiments, the elastic coefficient and preload force of the ear hook are set so that when the minimum distance between the sound-emitting portion and the abutting portion increases from 3.8 mm to 5.5 mm, the elastic force is between 25 gf and 65 gf.

[0008] In some embodiments, the preload force is set to between 1 gram-force and 25 grams-force, and the elastic coefficient of the ear hook is set to between 25 grams-force and 48 grams-force when the minimum interval is 3.85 mm, and between 26 grams-force and 65 grams-force when the minimum interval is 5.5 mm.

[0009] In some embodiments, the earphones further include a magnetic coupling matching structure, which provides a magnetic coupling force between the sound-emitting part and the abutting part. The magnetic coupling force and the elastic force cooperate to form a clamping force. The trend of the magnetic coupling force changing with the minimum distance between the sound-emitting part and the abutting part is opposite to the trend of the elastic force changing with the minimum gap.

[0010] In some embodiments, the magnetic coupling matching structure includes a first magnetic coupling matching component disposed on the sound-emitting portion and a second magnetic coupling matching component disposed on the abutting portion, and the first magnetic coupling matching component and the second magnetic coupling matching component are magnetically attracted to each other.

[0011] In some embodiments, the elastic force and the magnetic coupling force are configured such that when the minimum spacing between the sound emitting portion and the abutting portion increases from 3.85 mm to 5.5 mm, the clamping force is between 25 g-f and 65 g-f.

[0012] In some embodiments, the magnetic coupling force is configured such that when the minimum distance between the sound emitting portion and the abutting portion increases from 3.8 mm to 5.5 mm, the change in the magnetic coupling force is greater than or equal to 20 g-force.

[0013] In some embodiments, the ear hook includes an elastic sheet, both ends of which along the length direction are fixed relative to the sound-emitting portion and the abutting portion respectively, and a ratio of the width to the thickness of the elastic sheet is 8-12.

[0014] In some embodiments, within a reference cross-section arranged along the length direction of the ear hook, the ear hook, the sound-emitting portion and the abutting portion have an inner contour, the inner contour has a first reference point located on the ear hook and corresponding to the edge of the helix, the inner contour also has a second reference point located on the side of the first reference point facing the sound-emitting portion and a third reference point located on the side of the first reference point facing the abutting portion, a first connecting line is formed between the first reference point and the second reference point, and a second connecting line is formed between the first reference point and the third reference point. In a natural state, the length of the first connecting line is between 16 and 19 mm, the length of the second connecting line is between 6.5 and 9.0 mm, the angle between the first connecting line and the second connecting line is between 72° and 88°, the inner contour between the first reference point and the second reference point is located outside the first connecting line, and the inner contour between the first reference point and the third reference point is located outside the second connecting line.

[0015] In some embodiments, an arc-chord ratio of the inner contour between the first reference point and the second reference point is between 1.02 and 1.20; an arc-chord ratio of the inner contour between the first reference point and the third reference point is between 0.85 and 1.23.

[0016] In some embodiments, the sound-emitting portion has a fourth reference point closest to the first reference point and a fifth reference point farthest from the first reference point, and an arc-chord ratio of an outer wall surface of the sound-emitting portion between the fourth reference point and the fifth reference point and toward the abutting portion is between 1.4 and 1.7.

[0017] In some embodiments, a third line is formed between the first reference point and the fourth reference point, the third line is located between the first line and the second line, the length of the third line is between 13 and 17 mm, and the angle between the third line and the first line is 15° to 27°; and / or, a fourth line is formed between the first reference point and the fifth reference point, the fourth line is located between the first line and the second line, the length of the fourth line is between 24 and 30 mm, and the angle between the fourth line and the first line is 13° to 25°.

Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] FIG1 is a schematic diagram of an embodiment of the earphone of the present application when worn on a human ear;

[0020] FIG2 is a schematic front view of the structure of the earphone shown in FIG1 ;

[0021] FIG3 is a schematic diagram of the three-dimensional structure of the earphone shown in FIG1 ;

[0022] FIG4 is a schematic top view of the structure of the earphone shown in FIG1 ;

[0023] FIG5 is a schematic diagram of the three-dimensional structure of the sound-emitting portion of the earphone shown in FIG1 ;

[0024] FIG6 is a schematic front view of the structure of the sound-producing part shown in FIG5 ;

[0025] FIG7 is a schematic diagram of a cross-sectional structure of the sound-emitting portion shown in FIG6 along the cutting line AA;

[0026] FIG8 is another schematic cross-sectional view of the sound-emitting portion shown in FIG6 along the cutting line AA;

[0027] FIG9 is a schematic top view of the structure of the sound-producing portion shown in FIG5 ;

[0028] FIG10 is a schematic side view of the structure of the sound generating assembly of the sound generating portion shown in FIG8;

[0029] FIG11 is a schematic diagram of the cross-sectional structure of the sound generating assembly shown in FIG10 along the cutting line PP;

[0030] FIG12 is an exploded schematic diagram of the sound generating assembly shown in FIG8 ;

[0031] FIG13 is a schematic perspective structural diagram of another exemplary sound-producing component of the sound-producing portion shown in FIG8 ;

[0032] FIG14 is an enlarged schematic diagram of a local area Q of the sound-generating component shown in FIG11 ;

[0033] FIG15 is a schematic side view of the structure of the sound-producing portion shown in FIG5 ;

[0034] FIG16 is a schematic diagram of a cross-sectional structure of the sound-producing portion shown in FIG15 along the cutting line JJ;

[0035] FIG17 is a schematic top view of the structure of the sound-producing assembly of the sound-producing portion shown in FIG16 ;

[0036] FIG18 is another side view of the structure of the sound generating assembly of the sound generating portion shown in FIG8 ;

[0037] FIG19 is a schematic diagram of an exploded structure of the sound-producing portion shown in FIG5 ;

[0038] FIG20 is another exploded structural diagram of the sound-producing part shown in FIG5 ;

[0039] FIG21 is a schematic diagram of the cross-sectional structure of the sound-emitting portion shown in FIG15 along the cutting line UU;

[0040] FIG22 is another schematic structural diagram of the pressure relief hole of the sound-generating portion shown in FIG15 ;

[0041] FIG23 is another exploded structural diagram of the sound-producing part shown in FIG5 ;

[0042] FIG24 is a schematic diagram of a cross-sectional structure of the earphone shown in FIG4 along the cutting line VV;

[0043] FIG25 is a schematic diagram of a cross section corresponding to the cutting line VV shown in FIG24;

[0044] FIG26 is a schematic diagram of the three-dimensional structure of the earphone shown in FIG1 in a pre-tightened state;

[0045] FIG27 is a schematic diagram of changes in the clamping force of the earphone shown in FIG26;

[0046] FIG28 is a schematic diagram of the structure of the earphone shown in FIG26 for measuring the preload force through a thin film pressure sensor;

[0047] FIG29 is a schematic structural diagram of a device for measuring the clamping force / pre-tightening force of the earphone shown in FIG26 ;

[0048] FIG30 is a schematic structural diagram of another device for measuring the clamping force / pre-tightening force of the earphone shown in FIG26 ;

[0049] FIG31 is a schematic structural diagram of the earphone shown in FIG1 having a magnetic coupling matching structure;

[0050] FIG32 is a schematic diagram of the change in clamping force of the earphone shown in FIG31;

[0051] FIG33 is a schematic diagram of the clamping force variation of the earphone in FIG31 under a pre-tightening state;

[0052] FIG34 is a schematic diagram of the cross-sectional structure of the earphone shown in FIG2 along the cutting line II;

[0053] FIG35 is another schematic outline diagram of the cross section corresponding to the cutting line VV shown in FIG24;

[0054] FIG36 is another schematic structural diagram of the earphone shown in FIG1 . [Specific implementation method]

[0055] The present invention will be further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions, and for those skilled in the art, it is not necessary to describe these related operations in detail. They will fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0056] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0057] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0058] As shown in Figure 1, the user's ear EAR may include physiological parts such as the external auditory canal E11, the cavum concha E12, the cymba concha E13, the triangular fossa E14, the antihelix E15, the scaphoid E16, the helix E17 and the antitragus E18. Among them, although the external auditory canal 101 has a certain depth and extends to the eardrum of the ear EAR, for the sake of convenience of description and in combination with Figure 1, the external auditory canal E01 specifically refers to its entrance away from the eardrum (i.e., the ear hole) unless otherwise specified in this application. Furthermore, physiological parts such as the cavum concha E12, the cymba concha E13, and the triangular fossa E14 have a certain volume and depth; and the cavum concha E12 is directly connected to the external auditory canal E11, that is, it can be simply regarded as the aforementioned ear hole being located at the bottom of the cavum concha E12.

[0059] Furthermore, the tragus E19 is located outside the external auditory canal of the ear. Compared to the cavum conchae E12, cymba conchae E13, and fossa triangularis E14, the tragus E19 has a certain depth and volume in three-dimensional space. In other words, these parts are respectively concave toward the back of the ear EAR in the direction close to the user's head, while the tragus E19 is convex toward the front of the ear EAR in the direction away from the user's head. The "front of the ear EAR" is a concept relative to the "back of the ear EAR." The former refers to the side of the ear EAR away from the head, such as Figure 1, and the latter refers to the side of the ear EAR toward the head. Both of them refer to the user's ear EAR.

[0060] Furthermore, different users may have individual differences, resulting in different shapes, sizes and other dimensional differences in the ear EAR. In order to facilitate description and reduce (or even eliminate) individual differences between different users, a simulator containing a head and its (left and right) ear EARs can be made based on ANSI: S3.36, S3.25 and IEC: 603187 standards, such as GRAS45BCKEMAR. Therefore, descriptions such as "the user wears headphones", "the headphones are in a wearing state" and "in a wearing state" may refer to the headphones described in this application being worn on the ear EAR of the aforementioned simulator. Of course, precisely because different users have individual differences, the headphones may be worn by different users with certain differences from the ear EAR of the headphones worn on the aforementioned simulator, but such differences should be tolerated.

[0061] The present application describes at least one exemplary structure of an earphone 1. As shown in FIG. 1 , FIG. 1 shows the earphone 1 worn on a user's ear. The earphone 1 may be an ear clip-on earphone. As shown in FIG. 1 to 4 , the earphone 1 includes a sound-producing portion 100 for insertion into the user's cavum concha E12, an abutting portion 400 for contacting the back of the user's ear, and an ear hook 300 connected to the sound-producing portion 100 and the abutting portion 400. The ear hook 200 can pass around the user's helix 17, with the sound-producing portion 100 and the abutting portion 400 forming a clamping position on either side of the user's helix. The sound-producing portion 100 is a sound playback device that converts electrical signals into acoustic signals and plays them to the wearer. The abutting portion 400 forms a clamping position with the sound-producing portion 100, allowing the entire earphone 1 to be worn on the user's helix. In some embodiments, the abutting portion 400 may contain components such as a battery and a circuit board. Of course, the contact portion 400 may also be used without a battery, and the battery may be installed in the sound-generating portion 100 .

[0062] In some embodiments, as shown in Figures 5 and 6 , the sound-emitting portion 100 may be provided with a sound-emitting hole 111 and a pressure relief hole 112. The sound-emitting hole 111 may be located at the bottom of the sound-emitting portion 100, and the pressure relief hole 112 may be located on the side of the sound-emitting portion 100 near the ear hook 300. As shown in Figure 7 , the sound-emitting portion 100 includes a first housing 10 and a sound-emitting assembly 20. The first housing 10 is used to form a first accommodating chamber 110, and the sound-emitting assembly 20 is disposed within the first accommodating chamber 110.

[0063] As shown in Figure 7, the sound-emitting component 20 includes two speakers 21. Each speaker 21 includes a diaphragm 22. The two speakers 21 are assembled and matched with each other along the axial direction (that is, the direction of the axis Z) to form a first acoustic cavity 201 between the two speakers 21. The sound-emitting component 20 and the first shell 10 cooperate with each other to form a second acoustic cavity 202 between the sound-emitting component 20 and the first shell 10, which is isolated from the first acoustic cavity 201. The first shell 10 is provided with a sound outlet 111 connected to the first acoustic cavity 201 and a pressure relief hole 112 connected to the second acoustic cavity 202. The 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. Among them, the axial direction can be the direction indicated by the central axis Z of the sound-emitting component 20. The central axis Z can, for example, pass through the geometric center of the sound-emitting component 20 and the geometric center of the diaphragms 22 of the two speakers 21. The central axis Z can also be the central axis of the magnetic circuit of the two speakers 21.

[0064] For speakers 21 used to generate sound, sound pressure level (SPL) is an important parameter for measuring their performance. It is often used to compare the sound pressure levels emitted by different sound sources and to quantify and compare the intensity of sound. Sound pressure level is a measure of sound loudness. It represents the logarithm of the ratio between the effective value of the sound pressure and its baseline value. The specific formula is as follows:

[0065] Where SPL is the sound pressure level, P is the sound pressure generated by the speaker 21 when in operation, and Pref is the reference sound pressure. When the sound-emitting assembly 20 is provided with only a single speaker 21, the sound pressure generated when in operation is P. When two speakers 21 are provided in the sound-emitting assembly 20 under the same conditions, the sound pressure generated when in operation is 2P. Based on the above formula, the difference in sound pressure level between a single speaker 21 and two speakers 21 can be calculated as follows:

[0066] From the above deduction, it can be seen that, compared with setting up only one speaker 21, by assembling and matching along the axial direction (i.e., the direction of axis Z) in the sound-emitting component 20 and forming a first acoustic cavity 201 between the two speakers to produce sound, the sound pressure level of the sound-emitting component 20 can be effectively improved, thereby achieving a better volume effect, allowing the user to hear clearer sound, and effectively improving the sound quality of the earphone 1.

[0067] In addition, by assembling and matching the two speakers 21, the diaphragms 22 of the two speakers 21 can be opposite to each other to form a first acoustic cavity 201. The first acoustic cavity 201 is a place where the diaphragm 22 vibrates to push the air to generate sound waves for the user to listen to. The second acoustic cavity 202 is connected to the pressure relief hole 112 and then to the outside world, which is used to balance the air pressure inside the first shell 10. The two speakers 21 can be assembled to form the first acoustic cavity 201. After the two speakers 21 are assembled, they are assembled as a whole in the first shell 10, which can simplify the structure and simplify the assembly. Moreover, by forming a second acoustic cavity 202 isolated from the first acoustic cavity 201 between the sound-emitting component 20 and the first shell 10, there is no need to use additional structures or devices to form the second acoustic cavity 202, which can also simplify the structure, reduce the difficulty of assembling the earphone 1, and improve the assembly efficiency of the earphone 1.

[0068] Optionally, the two speakers 21 of the sound-emitting assembly 20 have identical acoustic characteristics and are coaxially arranged along the axial direction (i.e., the direction of axis Z). The identical acoustic characteristics of the two speakers 21 mean that, when driven by the same drive signal, the sound pressures generated by the two speakers 21 are identical or similar, specifically, the ratio of the difference in sound pressure between the two speakers to the minimum sound pressure is no greater than 10%. Providing two speakers 21 with identical acoustic characteristics and coaxially arranging them along the axial direction (i.e., the direction of axis Z) can help improve the sound quality of the sound-emitting assembly 20.

[0069] Optionally, as shown in Figure 7, the sound-emitting component 20 also includes a mounting bracket 27, which is arranged in a ring shape. The two speakers 21 are respectively assembled and matched with the two ends of the mounting bracket 27 to form a first acoustic cavity 201. The mounting bracket 27 is provided with a first sound-inlet hole 203 connecting the sound outlet hole 111 and the first acoustic cavity 201.

[0070] By setting an annular mounting bracket 27, a first acoustic cavity 201 is formed while achieving assembly and cooperation of the two speakers 21, and a first sound inlet hole 203 is set on the mounting bracket 27 to achieve communication between the sound outlet hole 111 and the first acoustic cavity 201, so that the sound waves in the first acoustic cavity 201 are transmitted to the user's ear EAR through the first sound inlet hole 203 and the sound outlet hole 111 in turn, effectively simplifying the structure, effectively improving the structural compactness and integration of the sound-emitting component 20, and helping to reduce the difficulty of assembly and improve assembly efficiency.

[0071] Optionally, in some embodiments, as shown in FIG7 , the two speakers 21 each include a voice coil 23, a magnetic circuit system 24, and a frame 25. The frame 25 is used to support the diaphragm 22 and the magnetic circuit system 24. The voice coil 23 is connected to the diaphragm 22 and is disposed within the magnetic field formed by the magnetic circuit system 24. The frames 25 of the two speakers 21 are respectively assembled and matched with the mounting bracket 27, so that a first acoustic cavity 201 is formed between the diaphragms 22 and the mounting bracket 27 of the two speakers 21. The voice coil 23 may be cylindrical, and the axis of the voice coil 23 may be the central axis Z of the sound-generating assembly 20. The voice coil 23 is acted upon by the magnetic field formed by the magnetic circuit system 24 to move in the axial direction (i.e., the direction of the axis Z), thereby driving the diaphragm 22 to vibrate and generate sound waves.

[0072] The sound component 20 is assembled by assembling the basin frames 25 of the two speakers 21 with the mounting bracket 27, and the basin frames 25 are configured to support the diaphragm 22 and the magnetic circuit system 24. The structure is simple and compact, which effectively reduces the difficulty of assembly and effectively improves the assembly efficiency.

[0073] Figure 7 shows the assembly and cooperation of the basin frames 25 and the mounting brackets 27 of the two speakers 21. Optionally, in some embodiments, the mounting bracket 27 can also be eliminated, and the basin frames 25 of the two speakers 21 can be assembled and cooperated with each other to form a first acoustic cavity 201. In this case, the basin frame 25 on at least one of the two speakers 21 is provided with a first sound inlet hole 203 connecting the sound outlet hole 111 and the first acoustic cavity 201. For example, both basin frames 25 can be provided with a sound outlet hole 111, or each can be provided with a part of the sound outlet hole 111, and a complete sound outlet hole 111 is formed after assembly. The assembly and cooperation between the two basin frames 25 realizes the assembly and cooperation of the two speakers 21 and the formation of the first acoustic cavity 201, without the need for additional connecting parts, thereby simplifying the structure and reducing production costs, which is conducive to reducing assembly difficulty and improving assembly efficiency.

[0074] Optionally, as shown in FIG. 7 , the diaphragms 22 of the two speakers 21 are arranged adjacent to each other on a side facing away from the respective magnetic circuit systems 24 , and the first acoustic cavity 201 is formed between the diaphragms 22 of the two speakers 21 .

[0075] The diaphragms 22 of the two speakers 21 are driven by their respective voice coils 23 to vibrate, generating sound waves for the user to hear on the side facing away from their respective magnetic circuit systems 24. By arranging the diaphragms 22 of the two speakers 21 adjacent to each other on the side facing away from 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 component 20 while facilitating a reduction in the volume of the first acoustic cavity 201, making the structure of the sound-generating component 20 more compact, thereby reducing the volume of the earphone 1 and improving the wearing comfort of the earphone 1. In addition, the two speakers 21 sharing the first acoustic cavity 201 can also shift the resonance peak of the first acoustic cavity 201 toward higher frequencies, thereby improving the sound quality of the earphone 1.

[0076] As shown in FIG. 7 , the baskets 25 of the two speakers 21 are respectively provided with second sound introduction holes 204 . The second sound introduction holes 204 connect the side of the corresponding diaphragm 22 facing the respective magnetic circuit system 24 with the second acoustic cavity 202 .

[0077] The diaphragms 22 of the two speakers 21 are connected to the second acoustic cavity 202 through the second sound-inlet hole 204 on the side facing their respective magnetic circuit systems 24, and are further connected to the outside through the pressure relief hole 112 to balance the air pressure inside the first shell 10. This helps to simplify the structure of the sound-generating component 20 while ensuring the sound quality, making it easier to assemble.

[0078] Optionally, in some embodiments, as shown in FIG7 , the diaphragms 22 of the two speakers 21 share a second acoustic cavity 202 and pressure relief holes 112 on the side facing their respective magnetic circuit systems 24. This arrangement can reduce the number of pressure relief holes 112, improving the aesthetics of the earphone 1, and helping to ensure the consistency of the acoustic characteristics of the two speakers 21, thereby improving the sound quality of the sound-generating assembly 20. Furthermore, the two speakers 21 sharing the second acoustic cavity 202 facilitates sealing and can reduce the volume of the first housing 10, making the structure of the earphone 1 more compact, effectively reducing the volume of the earphone 1, and improving the wearing comfort of the earphone 1.

[0079] Optionally, in other embodiments, as shown in FIG8 , the second acoustic cavity 202 includes two sub-acoustic cavities 202a that are isolated from each other, and the first shell 10 is provided with a pressure relief hole 112 that is respectively connected to each sub-acoustic cavity 202a. The diaphragms 22 of the two speakers 21 are respectively connected to the corresponding sub-acoustic cavity 202a and the pressure relief hole 112 on the side facing 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, that is, the earphone 1 has a certain frequency division function to adapt to different listening environments and sound quality requirements. In addition, the two isolated sub-acoustic cavities 202a can reduce the mutual interference between the two speakers 21, thereby improving the effectiveness and reliability of the operation of the two speakers 21, which is conducive to improving the sound quality of the earphone 1.

[0080] 9 and 10 , the sound outlet hole 111 and the first sound guide hole 203 are connected to each other along the radial direction RD of the sound emitting component 20. The sound outlet hole 111 and the first sound guide hole 203 are respectively arranged in a strip shape, and the length directions of the sound outlet hole 111 and the first sound guide hole 203 are arranged along the circumferential direction of the sound emitting component 20. The radial direction RD of the sound emitting component 20 is a direction perpendicular to the axial direction (i.e., the direction of the axis Z), and the circumferential direction of the sound emitting component 20 is a direction surrounding the axial direction (i.e., the direction of the axis Z).

[0081] By arranging the sound outlet hole 111 and the first sound inlet hole 203 into a strip shape, and arranging the length direction of the sound outlet hole 111 and the first sound inlet hole 203 along the circumference of the sound-emitting component 20, while ensuring the area of ​​the sound outlet hole 111 and the first sound inlet hole 203, the length of the sound outlet hole 111 and the first sound inlet hole 203 in the axial direction (i.e., the direction of the axis Z) is reduced, thereby improving the structural compactness of the sound-emitting component 20, reducing the volume of the earphone 1, and improving the wearing comfort of the earphone 1.

[0082] In this application, any description of a physical / mathematical quantity (such as a distance, ratio, area, length, width, thickness, etc.) as being within a numerical range may include the endpoints of the numerical range. For example, if a distance is between A and B, the value of the distance can be A, B, or some value between A and B. Therefore, any description of a numerical range "between" in the following content should be understood and applied in accordance with the above description.

[0083] Optionally, as shown in FIG11 , the spacing distance Z22 between the mounting edges of the diaphragms 22 of the two speakers 21 along the axial direction (i.e., the direction of the axis Z) is between 1.6 and 2.5 mm, for example, 1.7 mm, 1.9 mm, 2.1 mm, 2.3 mm, etc., and of course, other values ​​are possible. The mounting edge of the diaphragm 22 is the edge mounted on the basin frame 25. The radial dimension R21 of the first acoustic cavity 201 is between 7.5 and 9.5 mm, for example, 7.8 mm, 8.1 mm, 8.5 mm, 8.8 mm, 9.1 mm, etc., and of course, other values ​​are possible. Optionally, the areas of the sound outlet 111 and the first sound inlet 203 can be between 5 and 18 mm, respectively. 2 Optionally, the area of ​​the sound outlet hole 111 and the first sound introduction hole 203 can be between 9 and 20 mm. 2 For example, the area of ​​the sound outlet hole 111 and the first sound inlet hole 203 can be 6mm respectively. 2 , 8mm 2 , 9mm 2 , 10mm 2 , 12mm 2 , 14mm 2 , 17mm 2 , 19mm 2 By properly setting the above dimensions, the structural compactness of the sound generating assembly 20 can be improved while the resonance peak of the first acoustic cavity 201 is moved toward high frequencies, thereby improving the sound quality of the earphone 1 .

[0084] Optionally, as shown in Figure 11 , the ends of the magnetic circuit systems 24 facing away from the respective diaphragms 22 protrude beyond the frame 25, and the radial dimension R22 of the protruding portion of the magnetic circuit systems 24 relative to the frame 25 is smaller than the radial dimension R23 of the portion where the frame 25 supports the diaphragms 22. This arrangement allows the outer contour of the sound-producing assembly 20 to be closer to a sphere, thereby improving structural compactness and integration, and effectively reducing the volume of the sound-producing assembly 20. The first accommodating chamber 110 can be configured to be approximately spherical to match the appearance of the earphone 1. This arrangement facilitates assembly of the sound-producing assembly 20 within the first accommodating chamber 110, effectively improving the space utilization of the first accommodating chamber 110 and enhancing the assembly efficiency of the earphone 1. Furthermore, by configuring the outer contour of the sound-producing assembly 20 to be closer to a sphere, it better conforms to the shape of the cavum concha E12, thereby fully utilizing the space within the cavum concha E12 and effectively improving space utilization within the cavum concha E12.

[0085] Optionally, as shown in FIG11 , the ratio of the axial dimension Z21 of the sound-emitting component 20 to the radial dimension R23 of the position where the basket 25 supports the diaphragm 22 is between 0.8 and 1.3, for example, the ratio can be 0.9, 1, 1.1, etc. Optionally, the ratio of the maximum axial dimension Z21 to the maximum radial dimension R20 of the sound-emitting component 20 is between 0.8 and 1.3 mm, for example, the ratio can be 0.9, 1, 1.1, etc. In this way, the axial dimension Z21 of the sound-emitting component 20 and the radial dimension R23 of the position where the basket 25 supports the diaphragm 22 are very close, making the outer contour of the sound-emitting component 20 closer to a sphere, facilitating better matching with the approximately spherical first accommodating cavity 110, effectively improving the space utilization of the first accommodating cavity 110, effectively reducing assembly difficulty, and improving assembly efficiency. For example, if the axial dimension Z21 of the sound assembly 20 is 9.5 mm and the radial dimension R23 of the frame 25 supporting the diaphragm 22 is 8.1 mm, the ratio between the two is approximately 1.17. For another example, if the axial dimension Z21 of the sound assembly 20 is 9.5 mm and the radial dimension R23 of the frame 25 supporting the diaphragm 22 is 8.8 mm, the ratio between the two is approximately 1.08.

[0086] Optionally, in some embodiments, as shown in Figures 11 and 12, the sound-emitting assembly 20 is provided with a mounting boss 271, the first sound-introducing hole 203 is provided on the mounting boss 271, and the mounting boss 271 abuts against the first shell 10 at the periphery of the sound-emitting hole 111 (as shown in Figure 7), so that the first sound-introducing hole 203 and the sound-emitting hole 111 are isolated from the second acoustic cavity 202. Of course, in other embodiments, the mounting boss 271 is also provided on the first shell 10, but not on the sound-emitting assembly 20. Specifically, the first shell 10 is provided with a mounting boss 271, the sound-emitting hole 111 is provided on the mounting boss 271, and the mounting boss 271 abuts against the sound-emitting assembly 20 at the periphery of the first sound-introducing hole 203, so that the first sound-introducing hole 203 and the sound-emitting hole 111 are isolated from the second acoustic cavity 202.

[0087] By setting the mounting boss 271, the first sound inlet hole 203 and the sound outlet hole 111 are isolated from the second acoustic cavity 202 while realizing the connection between the first shell 10 and the sound-emitting component 20, thereby simplifying the structure and improving the isolation effect, thereby preventing the sound output from the first sound inlet hole 203 and the sound outlet hole 111 from being affected by the pressure relief of the second acoustic cavity 202 through the pressure relief hole 112, thereby improving the sound quality of the earphone 1.

[0088] Optionally, as shown in Figures 11 and 12, the sound-emitting component 20 further includes a mounting bracket 27, and a mounting boss 271 is located on the mounting bracket 27. The mounting bracket 27 further includes a bracket body 272 that is connected to the mounting boss 271 along the circumference of the sound-emitting component 20 and is arranged in a ring-shaped shape. Two first support surfaces 2701 facing each other along the axial direction (i.e., the direction of the axis Z) are provided on the bracket body 272. The outer end surfaces 250 of the two basins 25 on the side close to their respective diaphragms 22 are respectively supported on the corresponding first support surfaces 2701, and the mounting bosses 271 protrude from the bracket body 272 along the axial direction (i.e., the direction of the axis Z) and the radial direction RD of the sound-emitting component 20, and are arranged on the outside of the outer circumferential surfaces of the two basins 25. Such an arrangement can ensure the structural strength of the mounting boss 271 while reserving sufficient space for the mounting boss 271 to set the first sound inlet hole 203, and the two basin frames 25 are respectively supported on the corresponding first support table 2701 to improve the stability of the structure, thereby effectively improving the stability and reliability of the overall structure of the sound-generating component 20.

[0089] Optionally, as shown in Figures 10 and 12, the mounting bracket 27 can be a plastic molded part, with the radial thickness R24 of the mounting boss 271 ranging from 0.2 to 0.7 mm. Alternatively, the radial thickness R24 of the mounting boss 271 can be 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, or other values. The mounting boss 271 includes a connecting bridge 2723 extending along the width of the first sound guide hole 203 and connecting the long edge 111c of the first sound guide hole 203. The connecting bridge 2723 divides the first sound guide hole 203 into at least two first sub-sound guide holes spaced apart along the length of the first sound guide hole 203. The mounting bracket 27 can be manufactured, for example, by injection molding, compression molding, or other molding methods. In other embodiments, as shown in Figure 13, the mounting boss 271 can be constructed without the connecting bridge 2723, thereby achieving a larger first sound guide hole 203. Compared with the example shown in Figure 12, the circumferential size of the first sound inlet hole 203 in Figure 13 can be appropriately reduced to maintain structural strength, but since the connecting bridge 2723 is eliminated, the area of ​​the first sound inlet hole 203 can still be increased, thereby improving the sound quality.

[0090] By rationally setting the radial thickness R24 of the mounting boss 271, space for the first sound inlet 203 is ensured while not excessively increasing the radial dimension R20 of the sound-producing assembly 20, thereby achieving a more compact earphone 1. The provision of the connecting bridge 2723 facilitates the molding of the mounting bracket 27 and effectively improves the connection strength of the mounting boss 271, thereby effectively enhancing the effectiveness and reliability of the sound-producing assembly 20.

[0091] Optionally, in some embodiments, as shown in Figures 11 and 12, the bracket body 272 includes a supporting portion 2721 and a limiting portion 2722, the limiting portion 2722 is connected to the supporting portion 2721, the first supporting table 2701 is arranged on the supporting portion 2721, the limiting portion 2722 protrudes from the first supporting table 2701 along the axial direction (i.e., the direction of the axis Z) and is embedded in the basin frame 25 to limit the basin frame 25 along the radial direction RD of the sound-emitting component 20.

[0092] Of course, in other embodiments, the bracket body 272 may be provided with a recessed portion (not shown). To put it another way, the limiting portion 2722 is not protruding, but rather recessed, thereby forming a recessed portion into which a portion of the basin frame 25 is embedded, thereby limiting the basin frame 25 along the radial direction RD of the sound assembly 20.

[0093] By setting a limiting portion 2722 or a recessed portion to limit the basin frame 25 in the radial direction RD of the sound component 20, the structure is simple and stable, easy to assemble and disassemble, and effectively improves the structural stability of the sound component 20 while improving the assembly efficiency.

[0094] Optionally, as shown in Figures 11 and 12, sealants 28 are provided between the outer end surfaces 250 of the two basin frames 25 and the first support table 2701, and between the inner circumferential surface of the mounting boss 271 and the outer circumferential surface of the two basin frames 25. Providing the sealants 28 at the aforementioned locations can effectively enhance the isolation effect of the first acoustic cavity 201, thereby improving the sound quality of the earphone 1. Furthermore, the sealants 28 have good elasticity, and during the assembly connection between the mounting boss 271 and the first shell 10, the sealants 28 can undergo a certain elastic deformation to provide a better fit, thereby enhancing the stability and sealing of the connection between the mounting boss 271 and the first shell 10, which is beneficial for improving the sound quality of the earphone 1.

[0095] Optionally, as shown in Figures 11 and 14, the basin frame 25 is provided with a first cut corner 251 at a corner near the connection between the outer circumference of the limiting portion 2722 and the first support table 2701, thereby forming a first glue-receiving groove 252. The support portion 2721 is provided with a second cut corner 2702 at a corner near the connection between the outer end surface 250 of the basin frame 25 and the outer circumference of the basin frame 25, thereby forming a second glue-receiving groove 2703.

[0096] By setting the first cut angle 251 and the second cut angle 2702 to form the first glue containing groove 252 and the second glue containing groove 2703, the capacity of the sealant 28 is effectively increased, and while improving the sealing effect and isolation effect, the glue overflow is effectively reduced, thereby effectively reducing the possibility of interference with other components, which is conducive to reducing the difficulty of assembly.

[0097] Optionally, as shown in FIG11 , the mounting boss 271 is provided with a third cut corner 2704 at a corner near the outer circumference of the two basin frames 25 to form a third glue holding groove 2705. The provision of the third cut corner 2704 can further increase the glue holding capacity and the isolation effect of the first acoustic cavity 201. Optionally, the second cut corner 2702 and the third cut corner 2704 are connected to each other, so that the second glue holding groove 2703 formed by the second cut corner 2702 and the third glue holding groove 2705 formed by the third cut corner 2704 can be interconnected, and then continuous coating can be achieved during glue application, effectively simplifying the process and improving assembly efficiency.

[0098] Optionally, as shown in Figures 11 and 14, the basin frame 25 is further provided with a second supporting table 253, which is located on the inner side of the outer end surface 250 of the basin frame 25 along the radial direction RD of the sound-emitting component 20, and is spaced apart from the outer end surface 250 of the basin frame 25 along the axial direction (i.e., the direction of axis Z). The mounting edge of the diaphragm 22 is supported on the second supporting table 253, and the projection of the limiting portion 2722 along the axial direction (i.e., the direction of axis Z) at least partially falls on the second supporting table 253.

[0099] The second support surface 253 is provided to support the diaphragm 22, and the second support surface 253 is located inward of the outer end surface 250 of the frame 25 along the radial direction RD of the sound-emitting assembly 20. This helps improve the connection stability of the diaphragm 22, thereby enhancing the operational reliability of the diaphragm 22. Furthermore, the position-limiting portion 2722 is configured so that its projection along the axial direction (i.e., the direction of the axis Z) at least partially falls on the second support surface 253, thereby achieving rational and improved space utilization. While ensuring connection stability, it also helps increase the size of the first acoustic cavity 201 along the radial direction RD of the sound-emitting assembly 20, thereby improving the sound quality of the earphone 1.

[0100] Optionally, as shown in Figures 15 to 17, there are multiple second sound-introducing holes 204 and they are spaced apart along the circumference of the sound-emitting component 20, and a soldering pad 26 is provided on the basin frame 25, which is located between the two second sound-introducing holes 204. The distance between some of the second sound-introducing holes 204 and the pressure relief hole 112 is smaller than the distance between the soldering pad 26 and the pressure relief hole 112. The soldering pad 26 is used to receive electrical signals so that the speaker 21 can perform corresponding work. By arranging multiple second sound-introducing holes 204 along the circumference of the sound-emitting component 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 volume of the second acoustic cavity 202, and is beneficial to improving the pressure relief efficiency and the sound quality of the earphone 1. The section corresponding to the cutting line U~U shown in Figure 15 is the reference section SF.

[0101] Optionally, the distance between the aforementioned portion of the second sound-introducing holes 204 and the pressure relief hole 112 is no greater than 0.5 mm. Further, optionally, the distance is no greater than 0.3 mm. If the distance between the second sound-introducing holes 204 and the pressure relief hole 112 is too large, the pressure relief performance will be reduced, thereby affecting the sound quality of the earphone 1. By reasonably setting the distance between the portion of the second sound-introducing holes 204 and the pressure relief hole 112, the pressure relief efficiency is effectively improved, which is conducive to improving the sound quality of the earphone 1.

[0102] Optionally, as shown in Figure 16, the second sound-introducing hole 204 most adjacent to the pressure relief hole 112 is arranged relative to the welding pad 26 along the radial direction RD of the sound-emitting component 20. Such an arrangement can prevent the operation of the welding pad 26 and the pressure relief operation of the earphone 1 from interfering with each other, which is beneficial to improving the pressure relief performance of the earphone 1 and improving the sound quality of the earphone 1.

[0103] As shown in Figures 16 and 17, specifically, the two basin frames 25 are respectively provided with welding pads 26 and second sound-introducing holes 204 spaced apart from each other along the circumference of the sound-emitting assembly 20. As shown in Figures 12 and 18, each basin frame 25 and mounting bracket 27 are provided with mutually cooperating limiting structures 200a, 200b, the limiting structures 200a, 200b being used to limit the basin frame 25 and mounting bracket 27 along the circumference of the sound-emitting assembly 20, and the limiting structures 200a, 200b of the two basin frames 25 are arranged relative to each other along the axial direction (i.e., the direction of the axis Z). Optionally, as shown in Figures 17 and 18, the sound-emitting assembly 20 has a radial plane RF arranged along the axial direction (i.e., the direction of the axis Z) and passing through the limiting structures 200a, 200b, the welding pads 26 on each basin frame 25 are mirror-imaged relative to the radial plane RF, and the sound-introducing holes on each basin frame 25 are mirror-imaged relative to the radial plane RF.

[0104] The limiting structures 200a and 200b are used to limit the two basins 25 along the circumference of the sound-generating assembly 20, thereby preventing the two speakers 21 from rotating relative to each other, and effectively improving the structural stability and reliability of the sound-generating assembly 20. At the same time, by mirroring the soldering pads 26 and the second sound-introducing holes 204 on each basin 25 relative to the radial plane RF, so that the directivity of the soldering pads 26 and the second sound-introducing holes 204 on the two basins 25 is consistent, the consistency of the acoustic characteristics of the two speakers 21 in the first accommodating cavity 110 is improved, which is beneficial to improving the sound quality of the earphone 1. In addition, by designing the structures of the two basins 25 to be highly consistent, the two speakers 21 can reuse the same basin 25 design, effectively reducing material costs and production costs.

[0105] Optionally, the number of the limiting structures 200a and 200b is only one group. When the basin frame 25 is arranged in a mirror-symmetrical manner relative to the radial plane RF, the two basin frames 25 are installed relative to each other on one side of the limiting structure 200a during installation. The soldering pads 26 on each basin frame 25 are also arranged relative to each other and located on the same side of the sound-emitting component 20, thereby further making the directivity of the soldering pads 26 on the two speakers 21 consistent, thereby improving the consistency of the acoustic characteristics of the two speakers 21 in the first accommodating cavity 110, which is beneficial to improving the sound quality of the earphone 1.

[0106] Optionally, in combination with Figures 7, 19 and 20, the first shell 10 may include a first hard shell 11 and a second hard shell 12, the first hard shell 11 is connected to the ear hook 300, the first hard shell 11 and the second hard shell 12 enclose a first accommodating cavity 110, and the sound outlet 111 is arranged on the second hard shell 12.

[0107] By configuring the first hard shell 11 to be connected to the ear hook 300 and arranging the sound hole 111 on the second hard shell 12, the integrity of the sound hole 111 is effectively protected, the possibility of interference with the sound hole 111 is reduced, and the stability and reliability of the sound hole 111 are improved. The difficulty of aligning the first hard shell 11 and the second hard shell 12 is also reduced, thereby reducing the difficulty of assembling the sound component 20 and improving the assembly efficiency of the sound component 20. Moreover, by arranging the sound hole 111 in this way, it is not necessary to penetrate the first hard shell 11 and the second hard shell 12 at the same time, which can avoid the uneven surface of the sound hole 111, which in turn affects the installation of the tuning mesh and the steel mesh.

[0108] Optionally, as shown in Figures 19 and 20, the second hard shell 12 is provided with a protrusion 123 that protrudes relative to the end surface 122 of the second hard shell 12, and the first hard shell 11 is provided with a groove 113 that is recessed relative to the end surface 114 of the first hard shell 11. The protrusion 123 is embedded in the groove 113, and the sound outlet 111 is partially provided on the protrusion 123. By providing the protrusion 123 and the groove 113 to achieve the connection between the first hard shell 11 and the second hard shell 12, and by providing the sound outlet 111 partially on the protrusion 123, the connection between the first hard shell 11 and the second hard shell 12 is ensured. At the same time, the sound outlet 111 has a sufficient length, which is conducive to improving the sound effect and sound quality of the earphone 1.

[0109] Optionally, as shown in Figures 19 and 20, the mounting boss 271 is located on the sound-emitting assembly 20. Of course, the mounting boss 271 can also be located on the second rigid shell 12. A third support surface 115 is provided within the first rigid shell 11. The third support surface 115 is used to support the sound-emitting assembly 20, so that when the first and second rigid shells 11, 12 are secured together, the sound-emitting assembly 20 and the second rigid shell 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.

[0110] Optionally, as shown in FIG7 , when the sound-emitting component 20 and the second hard shell 12 are in contact via the mounting boss 271, a certain gap can be maintained between the end surface 114 of the first hard shell 11 and the end surface 122 of the second hard shell 12 along the contact direction of the sound-emitting component 20 and the second hard shell 12. This arrangement allows a certain gap to be maintained between the first hard shell 11 and the second hard shell 12 when the sound-emitting component 20 is in contact with the first hard shell 11 and the second hard shell 12 to offset the assembly error of the sound-emitting component 20, thereby effectively improving the accuracy and stability of the positioning and installation of the sound-emitting component 20. During the production and assembly process, the mounting boss 271 first contacts the sound-emitting component 20 and the second hard shell 12, and then the first hard shell 11 and the second hard shell 12 are snapped together, thereby squeezing the sound-emitting component 20 and the second hard shell 12 to achieve further fixation, effectively improving the contact effect and improving the connection stability of the earphone 1.

[0111] Optionally, the axial direction (i.e., the direction of the axis Z) can be perpendicular to the abutment direction of the sound-emitting component 20 and the second hard shell 12. Optionally, the magnetic circuit system 24 includes a magnetic cover 241 protruding from the basin frame 25 and a magnet 242 arranged in the magnetic cover 241. As shown in Figures 7 and 19, the third support table 115 is configured to support the magnetic covers 241 of the two speakers 21 respectively. This arrangement can achieve the installation and fixation of the sound-emitting component 20 without affecting the vibration of the diaphragm 22, and the structure is stable, which is conducive to improving the service life of the earphone 1.

[0112] Optionally, as shown in FIG. 9 and FIG. 15 , the sound outlet hole 111 and the pressure relief hole 112 are respectively arranged in mirror symmetry with respect to a symmetry plane SF arranged along the length direction of the ear hook 300 .

[0113] By providing the sound outlet hole 111 and the pressure relief hole 112 which are mirror-symmetrically arranged with respect to the symmetry plane SF, the aesthetics of the earphone 1 is improved while the earphone 1 can be applied to both the left ear and the right ear, thereby effectively improving the adaptability of the earphone 1.

[0114] Optionally, as shown in FIG4 , the earphone 1 further includes a microphone 30. The first shell 10 is provided with a sound inlet 101 for directing external sound to the microphone 30. The sound inlet 101 is arranged to intersect with the symmetry plane SF. The microphone 30 can be used to collect sound, so that the earphone 1 can adapt to different usage scenarios such as playing music and making calls. The sound inlet 101 is arranged to intersect with the symmetry plane SF. While ensuring the effectiveness of the microphone 30 in collecting sound through the sound inlet 101, the earphone 1 can be adapted to both the left and right ears, effectively improving the adaptability of the earphone 1. The section corresponding to the section line V to V in FIG4 is the symmetry plane SF.

[0115] Optionally, the number of microphones 30 can be set to one or more, for example, one, two, four, etc. When there is only one microphone 30, the microphone 30 is arranged to intersect with the symmetry plane SF. When there are multiple microphones 30, the multiple microphones 30 are symmetrically distributed relative to the symmetry plane SF. This arrangement can further enable the earphone 1 to be used with both the left ear and the right ear, effectively improving the adaptability of the earphone 1.

[0116] Optionally, as shown in Figure 21, Figure 21 is a schematic diagram of the cross-sectional structure of the sound-emitting part 100 with the symmetry plane SF as the cross-section. The minimum spacing distance D10 between the sound outlet 111 and the pressure relief hole 112 is between 6.5 and 10 mm. Optionally, the minimum spacing distance D10 is not less than 7 mm. Figure 21 is a cross-section with the symmetry plane SF. Acoustic short circuit means that when the diaphragm 22 of the speaker 21 moves forward or backward, the sound waves generated are in opposite phases, causing these sound waves to cancel each other out, thereby making the sound lighter or sounding unnatural. If the above-mentioned spacing distance D10 is too short, acoustic short circuit may occur. By reasonably setting the spacing distance D10 between the sound outlet 111 and the pressure relief hole 112, the possibility of acoustic short circuit can be effectively reduced, which is beneficial to improving the sound quality of the earphone 1.

[0117] Optionally, as shown in Figures 1 and 17, the pressure relief hole 112 is disposed toward the helix, and the sound outlet hole 111 and the pressure relief hole 112 are separated from each other by a contact area between the first shell 10 and the ear EAR. The contact area may be the contact area between the first shell 10 and the antihelix or the cavum concha. Separating the sound outlet hole 111 and the pressure relief hole 112 by the first shell 10 and the contact area can effectively reduce interference between the sound outlet hole 111 and the pressure relief hole 112, thereby effectively improving the reliability of the earphone 1 and the sound quality of the earphone 1. The earphone 1 is also suitable for both the left and right ears of the user, and has high adaptability.

[0118] Optionally, as shown in Figures 9 and 21, there is one sound outlet 111, which is arranged in a strip shape, and the symmetry plane is arranged along the length direction of the sound outlet 111 and is perpendicular to the axial direction (i.e., the direction of the axis Z). With this arrangement, when the earphone 1 is worn by the user, since the first shell 10 and the concha cavity of the user's ear EAR are not completely in contact, but there is a space that gradually increases from the contact area between the first shell 10 and the ear EAR to the ear canal opening, the sound output by the sound outlet 111 will be reflected in the concha cavity and enhanced, so as to utilize the reflection effect to increase the sound pressure at the ear canal opening, so that the user can hear a sound with a stronger intensity.

[0119] Optionally, as shown in Figures 15 and 21 , there is one pressure relief hole 112 in a strip shape, with the symmetry plane SF extending along the width of the pressure relief hole 112 and perpendicular to the axis (i.e., the direction of the axis Z). This arrangement allows the pressure relief hole 112 to be as far away from the sound outlet 111 as possible, effectively reducing the possibility of acoustic short circuits and improving the sound quality of the earphone 1.

[0120] Optionally, as shown in FIG22 , the pressure relief hole 112 includes a first hole portion 1121 and a second hole portion 1122 along the length 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. The width W1 of at least a portion of the first hole portion 1121 and the width W3 of at least a portion of the second hole portion 1122 are greater than the width W3 of the third hole portion 1123. The widths of the first, second, and third hole portions 1121, 1122, and 1123 refer to the dimensions in a direction perpendicular to the length of the pressure relief hole 112. This arrangement increases the area of ​​the pressure relief hole 112 while effectively reducing the likelihood of the pressure relief hole 112 being blocked by the helix or other parts of the ear, thereby improving the pressure relief effect and, in turn, the sound quality of the earphone 1. Furthermore, while maintaining the pressure relief effect, the entire pressure relief hole 112 does not need to be set to its maximum width, resulting in a more moderate size and enhancing the aesthetics of the earphone 1.

[0121] Optionally, the symmetry plane SF is the symmetry plane of the earhook 300. Specifically, the symmetry plane of the earhook 300 is set along the length direction of the earhook 300, and the parts of the earhook 300 on both sides of the symmetry plane are minimally different or consistent. That is, if the earhook 300 is regularly symmetrical, then the parts of the earhook 300 on both sides of the symmetry plane are consistent. If the earhook 300 is not strictly symmetrical, then the difference between the earhook 300 on both sides of the symmetry plane SF should be minimized among various division methods. For example, the size of the difference can be determined by observing the projection of the earhook 300 on a plane perpendicular to the symmetry plane.

[0122] Optionally, as shown in Figures 19, 20, and 23, the first shell 10 may further include a first flexible body 13. The first rigid shell 11 and the second rigid shell 12 enclose a first accommodating cavity 110, and the first flexible body 13 is disposed on the outer wall of the second rigid shell 12 and is configured to contact the cavum concha. The plane on which the outermost loop of the end face of the first flexible body 13 lies is a first reference plane S13. The midpoint of the sound-emitting component 20 along the axis Z, or the axis Z of the sound-emitting component 20, is located on the side of the first reference plane S13 facing the first rigid shell 11 and is parallel to the first reference plane S13.

[0123] The hard material can be made of plastic, metal, or other materials that can be used as support materials for the earphone 1 shell, so as to provide better support and stability for the internal structure of the first shell 10, such as the sound-emitting component 20. The first flexible body 13 covers the outer wall of the second hard shell 12. The first flexible body 13 can be made of silicone or other skin-friendly flexible materials to improve the comfort of the sound-emitting part 100 when in contact with the wearer. Usually, when worn, the second hard shell 12 will face the wearer's concha cavity and will come into contact with the wearer. By covering the first flexible body 13 on the outer wall of the second hard shell 12, the wearing comfort of the earphone 1 can be improved. In addition, by locating the midpoint of the sound-emitting component 20 along the axis Z or the axis Z of the sound-emitting component 20 on the side of the first reference plane S13 facing the first hard shell 11, the center of the entire sound-emitting component 20 can be closer to the first hard shell 11, that is, when the first flexible body 14 is arranged on the outer wall of the second hard shell 12, the centroid of the first shell 10 and the centroid of the sound-emitting component 20 do not coincide with the centroid of the sound-emitting component 20, and the centroid of the sound-emitting component 20 is more biased toward the first hard shell 11 relative to the centroid of the first shell 10, thereby realizing the eccentric setting of the sound-emitting component 20, thereby making better use of the space inside the first hard shell 11, which is conducive to improving space utilization.

[0124] Optionally, the midpoint of the sound component 20 along the axis Z or the distance D13 from the axis Z to the first reference plane S13 is between 0.4 and 4 mm. This positioning of the sound component 20 within the first housing 10 allows more of the volume of the sound component 20 to be distributed toward the first rigid housing 11, thereby fully utilizing the relatively ample internal space of the first rigid housing 11 and allowing the first housing 10 to accommodate a larger sound unit.

[0125] Optionally, the sound-emitting part 100 is configured to keep the ear canal at least partially open in the concha cavity, reducing the possibility of blocking the ear canal and affecting the transmission of sound to the user's ear canal, and facilitating the reflection of sound in the user's concha cavity to increase the listening volume.

[0126] In some embodiments, as shown in FIG11 , the ratio of the maximum axial dimension Z21 to the maximum radial dimension R20 of the sounding assembly 20 is between 0.8 and 1.3. Alternatively, this ratio may be 0.9, 1, 1.1, 1.2, or the like. This close proximity between the maximum axial dimension Z21 and the maximum radial dimension R20 of the sounding assembly 20 makes the outer contour of the sounding assembly 20 more spherical, effectively improving the structural compactness and integration of the sounding assembly 20, and significantly reducing assembly difficulty and improving assembly efficiency.

[0127] Optionally, the maximum radial dimension R20 of the sound-producing assembly 20 is set to the maximum radial dimension of the mounting bracket 27 or the basin frame 25. This allows the mounting bracket 27 or the basin frame 25 to serve as the primary force-bearing component during assembly, effectively protecting the diaphragm 22 and the voice coil 23 and improving the reliability and effectiveness of the sound-producing assembly 20. Optionally, the maximum axial dimension of the sound-producing assembly 20 is set to the maximum axial dimension between the magnetic shields 241 of the two speakers 21 along the axial direction (i.e., the direction of the axis Z).

[0128] Optionally, in some embodiments, the resonance peak frequency of the diaphragms 22 of the two speakers 21 is between 200 and 300 Hz, and the absolute difference in the resonance peak frequency of the diaphragms 22 of the two speakers 21 is less than or equal to 50 Hz. The resonance peak may be the first resonance peak that appears during the frequency sweep from low frequency to high frequency. Specifically, the resonance peak frequency refers to the frequency of the first resonance peak that appears in sequence from low to high frequency when performing an electroacoustic frequency sweep test on the structure in the sound-emitting part 100, such as the speaker 21, the first shell 10, and the internal cavity of the first shell 10. The position where the resonance peak appears corresponds to the position where the impedance curve of the sound-emitting part 100 suddenly increases.

[0129] By setting the speaker 21 with a resonant peak frequency within a reasonable range, the range and type of sound played by the speaker 21 are wider, and the sound quality is better not only in human voice but also in music playback. Moreover, the absolute difference between the resonant peak frequencies of the two speakers 21 is less than or equal to 50Hz, so that the consistency of the two speakers 21 is higher, and the earphone 1 further improves the sound quality of the earphone 1.

[0130] In some embodiments, as shown in Figure 21, the sound hole 111 is arranged in a strip shape, and has a first end 111a and a second end 111b arranged at intervals along the length direction of the sound hole 111. In the wearing state, the first end 111a is arranged toward the ear hole E11, and the distance D10 between the outer wall surface of the first shell 10 at the second end 111b and the inner wall surface of the concha cavity E12 is smaller than the distance D10 between the outer wall surface of the first shell 10 at the first end 111a and the inner wall surface of the concha cavity E12.

[0131] By arranging the first housing 10 so that the first end 111a of the sound outlet 111 faces the ear canal, sound waves are able to enter the ear canal as much as possible through the sound outlet 111, effectively shortening the sound wave transmission path. This effectively increases the volume of the sound heard by the user, thereby improving the sound quality of the earphone 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 cavum 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 cavum concha E12, the curve formed by the outer ring of the speaker 21 cutting through the first housing 10 and the cavum concha can form a wedge-shaped space with the cavum concha. Arranging the sound outlet 111 along this curve creates a horn structure between the sound outlet 111 and the cavum concha. Using the cavum concha E12 as a reflective wall enhances sound wave reflection, effectively increasing the sound pressure at the ear canal and boosting the listening volume.

[0132] Optionally, as shown in FIG21 , the outer wall of the first housing 10 contacts the inner wall of the cavum concha at the second end 111b and / or on the side of the second end 111b away from the first end 111a. This arrangement can block sound from propagating away from the ear canal, further facilitating the first housing 10 and the cavum concha to form a horn structure that reflects sound toward the ear canal, thereby reducing sound leakage from the earphone 1, effectively increasing sound pressure at the ear canal, and boosting listening volume.

[0133] Optionally, as shown in Figure 21, the outer wall of the first housing 10 is configured such that the long edge 111c of the sound outlet 111 is curved, and the distance D10 between the outer wall of the first housing 10 and the inner wall of the cavum concha gradually increases from the second end 111b to the first end 111a. This configuration allows sound to be reflected toward the ear canal within the horn structure formed between the cavum concha E12 and the outer wall of the first housing 10, rather than away from the ear canal. This effectively improves the sound output of the earphone 1, increases the sound pressure at the ear canal, and increases the listening volume.

[0134] Optionally, as shown in FIG21 , the arc-to-chord ratio of the long side edge 111 c of the sound outlet 111 is between 1.05 and 1.4, for example, 1.1, 1.2, 1.3, etc. A symmetry plane is provided along the length of the ear hook 300, and the arc-to-chord ratio of the long side edge 111 c of the sound outlet 111 is the arc-to-chord ratio of the projected profile of the long side edge 111 c on the symmetry plane. In some embodiments, the arc length of the long side edge 111 c of the sound outlet 111 is 10 mm, and the chord length is 8.87 mm. Optionally, the aspect 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 hole 111 is 1.95 mm, the outer width is 2.58 mm, and the length of the sound hole 111 is 12.9 mm. By rationally setting the arc length, chord length, width, and length of the long edge 111 c of the sound hole 111, the resulting size of the sound hole 111 is more consistent with the size and shape of the concha cavity and the ear canal, making it easier to form a sound-enhancing horn structure, 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.

[0135] Optionally, as shown in FIG24 , when the sound-emitting portion 100 and the abutting portion 400 are simultaneously placed on a horizontal reference plane, the long edge 111c of the sound outlet 111 forms a first reference point M with the horizontal reference plane 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 abutting portion 400, while the first end 111a is located on the side of the first reference point M facing away from the abutting portion 400. This arrangement brings the first end 111a of the sound outlet 111 closer to the ear canal, while the first housing 10 near the second end 111b can abut the cavum concha and, together with the abutting portion 400, clamp the ear on both sides of the user's ear. This securely holds the ear EAR while utilizing the cavum concha to amplify sound volume and pressure. Furthermore, the portion of the first housing 10 abutting the cavum concha further blocks sound from propagating away from the ear canal, thereby reducing sound leakage.

[0136] Optionally, the length D12 of the long edge 111c of the sound hole 111 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 edge 111c of the sound hole 111 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 all indicate the distances between corresponding positions on the projected contour of the sound hole 111 on the symmetry plane. By rationally setting the distances from the first end 111a and the second end 111b to the first reference point M, the effect of enhancing the propagation of sound waves from the cavum concha E12 to the ear canal is further enhanced, effectively increasing the sound pressure at the ear canal and effectively increasing the listening volume.

[0137] 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, 1.04, etc., and 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, 1.04, etc. 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 symmetry plane. By reasonably setting the arc-chord ratios of the long side hole edge 111c of the sound outlet 111 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 cavum 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 cavum concha is enhanced, effectively improving the listening volume and the user's experience.

[0138] Optionally, as shown in FIG24 , the long edge 111c of the sound hole 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. The above angles all refer to the angles between corresponding positions on the projected contour of the sound hole 111 on the symmetry plane. By reasonably setting the above-mentioned angle, the sound reflection effect of the horn structure formed between the outer wall surface of the first shell 10 and the concha cavity is improved while ensuring the space size of the sound outlet 111, thereby effectively improving the listening volume and the user's experience.

[0139] Optionally, as shown in FIG9 , the sound hole 111 has a center line set along its length. The sound hole 111 intersects with a reference section SF set 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 hole 111 is offset toward the earlobe. The center line can be a virtual curve that divides the sound hole 111 into two equal parts along the length. Preferably, the sound hole 111 intersects with the reference section SF set 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 a symmetry plane set along the length of the ear hook 300, and therefore will be referred to as the symmetry plane SF when describing the symmetry plane below. In this way, the reference section SF can be set along the length of the ear hook 300, and the portions of the ear hook 300 on both sides of the reference section SF have minimal difference or are consistent. Of course, in other embodiments, the reference cross section SF and the symmetry plane of the ear hook are parallel to each other, but may be staggered by a small distance.

[0140] By reasonably setting the angle between the center line of the sound hole 111 and the reference cross-section SF of the ear hook 300, the sound hole 111 is set to be biased toward the earlobe, while ensuring the user's wearing comfort, the sound output by the sound hole 111 is transmitted to the ear hole as much as possible, effectively improving the user experience of the earphone 1. Specifically, when the user wears the earphone 1 naturally, the earphone 1 may deflect downward under the action of gravity as the user moves. Such a setting can ensure that the sound hole 111 is as much as possible facing the ear hole even when the earphone 1 is deflected, effectively increasing the user's listening volume when the earphone 1 is in a deflected state, and improving the user experience.

[0141] Optionally, the plane of the midline coincides with the reference cross section SF. Alternatively, the sound outlet 111 is mirror-symmetrical with respect to the reference cross section SF. This configuration allows the earphone 1 to be worn and used in both the left and right ears, effectively improving the adaptability of the earphone 1 while ensuring user comfort.

[0142] Optionally, as shown in FIG25 , on the reference cross section SF, the sound-emitting portion 100 has a second reference point N closest to the abutting portion 400. In some embodiments, in the natural state, the sound-emitting portion 100 and the abutting portion 400 do not directly abut each other. In this case, the second reference point N is the intersection of the shortest line between the sound-emitting portion 100 and the abutting portion 400 and the outer wall of the sound-emitting portion 100, with the midpoint of this shortest line being O. In other embodiments, in the natural state, the sound-emitting portion 100 and the abutting portion 400 are exactly abutting each other or the abutting area is very small. In this case, the abutting point between the sound-emitting portion 100 and the abutting portion 400 is considered to be the second reference point N. In still other embodiments, in the natural state, the abutting area between the sound-emitting portion 100 and the abutting portion 400 is relatively large. In this case, on the reference cross section SF, the midpoint of the arc corresponding to the abutting area between the outer wall of the sound-emitting portion 100 and the abutting portion 400 is considered to be the second reference point N.

[0143] The inner contour of the ear hook 300, when worn, near the edge of the helix, has a third reference point C farthest from the second reference point N. The sound hole 111 is located on the side of the second reference point N away from the third reference point C. On the outer wall of the sound-emitting portion 100, the distance D13 from the second end 111b to the second reference point N ranges from 2.2 to 4.2 mm, and the distance from the first end 111a to the second reference point N ranges from 9 to 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, or 2.9 mm, while the distance from the first end 111a to the second reference point N can be 9.8 mm, 10.7 mm, or 11.6 mm, or other values ​​are possible. The aforementioned distances refer to the distances between corresponding positions on the projected contour of the sound hole 111 on the plane of symmetry.

[0144] Optionally, as shown in FIG15 , the pressure relief hole 112 is disposed toward the helix and intersects the reference cross-section SF. This arrangement can effectively reduce the possibility of interference between the pressure relief hole 112 and the sound outlet 111 while ensuring the pressure relief effect of the pressure relief hole 112, thereby effectively improving the stability and reliability of the earphone 1.

[0145] Optionally, as shown in Figures 1 and 21, the pressure relief hole 112 and the sound outlet hole 111 are separated from each other by the contact area between the sound-emitting portion 100 and the ear (e.g., the cavum concha). Separating the sound outlet hole 111 and the pressure relief hole 112 by the sound-emitting portion 100 and the contact area can effectively reduce the possibility of an acoustic short circuit between the sound outlet hole 111 and the pressure relief hole 112, thereby effectively improving the reliability of the earphone 1 and the sound quality of the earphone 1. Furthermore, the earphone 1 is suitable for both the left and right ears of the user, providing high adaptability.

[0146] Optionally, as shown in FIG15 , there is one pressure relief hole 112 in a strip shape, with the reference cross section SF being arranged along the width of the pressure relief hole 112. This arrangement ensures sufficient pressure relief area to effectively ensure the pressure relief effect of the pressure relief hole 112 while preventing the pressure relief hole 112 from extending too far toward the ear hook 300, thereby improving the aesthetics of the earphone 1.

[0147] Optionally, as shown in FIG15 , the pressure relief hole 112 is mirror-symmetrical with respect to the reference section SF, which improves the aesthetics of the earphone 1 while allowing the earphone 1 to be worn on both the left and right ears, thereby effectively improving the adaptability of the earphone 1 .

[0148] Optionally, as shown in Figures 15 to 17, the sound-emitting component 20 is provided with at least one second sound-introducing hole 204 connected to the pressure relief hole 112 through the first accommodating space, and the distance between the at least one second sound-introducing hole 204 and the pressure relief hole 112 is not greater than 0.5 mm. Optionally, the distance is not greater than 0.4 mm, and optionally, the distance is not greater than 0.3 mm. If the distance from the sound-introducing hole to the pressure relief hole 112 is too large, it will lead to a reduction in the pressure relief performance, thereby affecting the sound quality of the earphone 1. By reasonably setting the distance from the sound-introducing hole to the pressure relief hole 112, the pressure relief efficiency is effectively improved, which is beneficial to improving the sound quality of the earphone 1.

[0149] Optionally, as shown in Figures 4 and 19 to 21, the earphone 1 further includes a microphone 30. The first shell 10 is provided with a sound inlet 101 for directing external sound to the microphone 30, and the sound inlet 101 is arranged to intersect with the reference section SF. The microphone 30 can be used to collect sound, so that the earphone 1 can adapt to different usage scenarios such as playing music and making calls, and the sound inlet 101 is arranged to intersect with the reference section SF. While ensuring the effectiveness of the microphone 30 in collecting sound through the sound inlet 101, the earphone 1 can be adapted to both the left and right ears, effectively improving the adaptability of the earphone 1. The section corresponding to the section line V to V in Figure 4 is the reference section SF.

[0150] Optionally, the ear hook 300 provides an elastic force between the sound-emitting portion 100 and the abutting portion 400, so that the sound-emitting portion 100 and the abutting portion 400 exert a clamping force F on both sides of the auricle when worn. As shown in FIG26 , the ear hook 300 is configured so that in its natural state, the sound-emitting portion 100 and the abutting portion 400 abut against each other, creating a preload force F0.

[0151] When worn, the earhook 300 undergoes a certain amount of elastic deformation, exerting a certain amount of elastic force on both sides of the user's auricle. This elastic force causes the sound-producing portion 100 and the contact portion 400 to contact the auricle on either side, thereby clamping the ear. However, if the elastic force provided by the earhook 300 is too great, the clamping force F will be excessive, causing discomfort to the ear. If it is too small, the clamping force F will be too low, making it difficult to maintain a stable fit.

[0152] It can be seen from Hooke's law that the elastic force generated by elastic deformation is proportional to the deformation of the object, and the ratio is the elastic coefficient. In order to meet the needs of clamping ears with smaller thickness, the elastic coefficient of the ear hook 300 is usually set to be larger, but this will cause the elastic force applied to be too large when the thickness of the clamped ear is larger, causing pain, and the wearing comfort is not high. In addition, the large elastic coefficient causes a large change in the clamping force F when adapting to ears of different thicknesses, which in turn causes a large difference in the clamping force F, resulting in a large difference in user experience and low compatibility. As shown in Figure 27, the clamping force change line L1 has no pre-tightening force and a large elastic coefficient, which causes the distance between the sound-emitting part 100 and the abutting part 400 to change from X to F. s Change to X m , the clamping force F is large, and the clamping force variation ΔF1 varies greatly. 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 a natural state to form a pre-tightening force, the elastic coefficient of the ear hook 300 can be reduced, so that when clamping ears with smaller thickness and larger thickness, the elastic force applied by the ear hook 300 varies less, effectively reducing the difference in clamping force F between ears with smaller thickness and larger thickness, effectively improving the adaptability and wearing comfort of the earphone 1, so that the earphone 1 can be worn by users with more ear sizes. As shown in Figure 27, relative to the clamping force variation line L1, the clamping force variation line L2, on the basis of having a pre-tightening force F0, varies from the distance between the sound-emitting part 100 and the abutting part 400 from X s Change to X m The clamping force F is small, and the clamping force variation △F2 is also small, so 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, and allowing the earphone 1 to be worn by users with more ear sizes.

[0153] After a lot of empirical research conducted by the applicant to improve the wearing comfort of the earphone 1, it was found that the ear thickness of the small ear group is s It is about 3.8mm, and the ear thickness of people with big ears is X m After obtaining this data, the applicant conducted corresponding research on the earphone 1 in terms of preload force and elastic coefficient.

[0154] Optionally, the elastic coefficient of the ear hook 300 is set so that when the minimum distance between the sound-emitting portion 100 and the abutting portion 400 increases from 3.8 mm to 5.5 mm, the change in the elastic force is less than or equal to 20 g-f, for example, 5 g-f, 10 g-f, or 15 g-f. As shown in FIG27 , on the basis of the preload force F0, when the distance between the sound-emitting portion 100 and the abutting portion 400 is X m When the clamping force F is small, the clamping force change △F2 is also small.

[0155] By reasonably setting the elastic coefficient, the elastic force can be kept small while meeting the clamping requirements, so that when the earphone 1 clamps ears with larger and smaller thicknesses, the clamping force provided by the ear hook 300 has a smaller difference, thereby effectively improving the adaptability of the earphone 1 while meeting the wearing comfort.

[0156] Optionally, the elastic coefficient and pre-tightening force of the ear hook 300 are set so that when the minimum distance between the sound-emitting part 100 and the abutment part 400 increases from 3.8 mm to 5.5 mm, the elastic force is between 25 g-f and 65 g-f, for example, it can be 30 g-f, 40 g-f, 50 g-f, etc.

[0157] By reasonably setting the elastic coefficient and pre-tightening force of the ear hook 300, a suitable elastic force is provided, thereby providing the user with a suitable clamping force F when wearing, thereby ensuring wearing stability and improving wearing comfort.

[0158] As shown in FIG28 , the preload force F0 can be measured by a thin film pressure sensor 600, specifically a thin film pressure sensor 600 clamped between the abutment portion 400 and the sound-generating portion 100. In other embodiments, as shown in FIG29 and FIG30 , the preload force F0 can also be measured by a tension gauge / sensor 607 or 613. For example, by fixing one of the sound-generating portion 100 and the abutment portion 400 and pulling the other until the two are in contact or separated, or when the minimum distance between the two is a small distance, the measured tension is the preload force. This small distance can be, for example, 0 to 0.8 mm.

[0159] As shown in Figures 29 and 30 , the clamping force F can be measured when the sound-generating portion 100 and the contact portion 400 are positioned horizontally. Specifically, the clamping force F can be measured by holding the contact portion 400 in place with a tension gauge / sensor while pulling the sound-generating portion 100. For example, after bonding a wire to the housing of the sound-generating portion 100, the wire can be pulled to a displacement of, for example, 3.8 mm to 5.5 mm.

[0160] As shown in FIG29 , auxiliary plate 603 and angle bracket 601 are fixed in the X direction (preventing relative displacement in the X direction) using an adhesive (e.g., quick-drying glue, hot melt adhesive, etc.) or other fixing method that does not damage the structure of the earphone 1. Auxiliary plate 604 and angle bracket 602 are fixed in the X direction (preventing displacement in the X direction). Auxiliary plates 603 and 604 are placed on a support surface with a low X-direction friction coefficient (e.g., a lubricating oil interface or a support surface on a bearing support). The inner sides of angle bracket 601 and angle bracket 602 in the Y direction are tangent to the two sides of the earphone 1 near the ends of the earhook 300, thereby securing the earphone 1 between angle bracket 601 and angle bracket 602. A force gauge 607 is connected to angle bracket 602 in the X direction, for example, by screws 606. In some embodiments, the earphone 1 can be further fixed by an adhesive (e.g., quick-drying glue, hot melt glue, etc.) or other fixing methods that do not damage the structure of the earphone 1, so that the connection positions of the earphone 1 and the two corner brackets 601 and 602 are close to the horizontal direction. For example, as shown in Figure 29, 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, and the line between position A and position B is roughly parallel to the X direction. During measurement, the auxiliary plate 604 is fixed, and the auxiliary plate 603 is moved with a pulling force in the X direction, so that the sound-emitting part 100 and the abutting part 400 are pulled apart, and the magnitude of the pulling force is obtained by the dynamometer 607, and the distance between the auxiliary plate 603 and the auxiliary plate 604, that is, the distance between the sound-emitting part 100 and the abutting part 400, is obtained by a vernier caliper.

[0161] As shown in FIG30 , the abutting portion 400 is fixed between the two clamping plates by a fastener 608. One end of a force measuring line 612 is connected to the housing of the sound-emitting portion 100 away from the abutting portion 400 by an adhesive (e.g., quick-drying glue, hot melt adhesive, etc.) (e.g., the force measuring line 612 is connected to the sound-emitting portion 100 at position C, and the symmetry plane SF of the ear hook 300 may pass through position C). The other end of the force measuring line 612 is connected to a force gauge 614. The force measuring line 612 is parallel to the X-direction. During measurement, a tensile force in the X-direction is applied to move the force gauge 614, thereby pulling the sound-emitting portion 100 and the abutting portion 400 apart. The distance between the sound-emitting portion 100 and the abutting portion 400 is measured by a vernier caliper 609, and the magnitude of the tensile force is measured by the force gauge 14.

[0162] Optionally, the preload force is set to be between 1 gram-force and 25 grams-force, and the elastic coefficient of the ear hook 300 is set to be between 25 grams-force and 48 grams-force when the minimum interval is 3.85 mm, and between 26 grams-force and 65 grams-force 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 basically linearly under the usage scenario, and while meeting the clamping stability, the wearing comfort is effectively improved, and the adaptability, wearing stability and reliability of the earphone 1 are effectively improved.

[0163] Optionally, as shown in FIG26 , the earphone 1 may further include a magnetic coupling matching structure 50. The magnetic coupling matching structure 50 provides a magnetic coupling force between the sound-emitting portion 100 and the abutting portion 400. The magnetic coupling force and the elastic force cooperate to form a clamping force F. The trend of the magnetic coupling force changing with the minimum gap between the sound-emitting portion 100 and the abutting portion 400 is opposite to the trend of the elastic force changing with the minimum gap. For example, as the minimum gap between the sound-emitting portion 100 and the abutting portion 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 a natural state so that the sound-emitting portion 100 and the abutting portion 400 abut each other, and can also be used when the ear hook 300 is configured to separate the sound-emitting portion 100 and the abutting portion 400 from each other in a natural state.

[0164] By setting up a magnetic coupling matching structure 50 to provide a magnetic coupling force, the magnetic coupling force can be coordinated with the elastic force to provide a more appropriate clamping force F in the wearing state, and can effectively reduce the change and fluctuation of the clamping force F when the minimum spacing changes, effectively improve the wearing comfort, reduce the pre-tightening force required by the ear hook 300, and make the user's wearing process smoother.

[0165] Optionally, as shown in FIG31 , the magnetic coupling structure 50 includes a first magnetic coupling member 51 disposed on the sound-emitting portion 100 and a second magnetic coupling member 52 disposed on the abutting portion 400 . The first magnetic coupling member 51 and the second magnetic coupling member 52 are magnetically attracted to each other. The first magnetic coupling member 51 and the second magnetic coupling member 52 can be magnets. The first magnetic coupling member on the sound-emitting portion 100 can be the magnet 242 of the speaker 21 , or an additional magnet or other magnetic member can be provided. By disposing the first magnetic coupling member 51 and the second magnetic coupling member 52 on the sound-emitting portion 100 and the abutting portion 400 , respectively, the magnetic coupling force is provided by the magnetic attraction between the first magnetic coupling member 51 and the second magnetic coupling member 52. This maintains a moderate and stable clamping force when clamping thick or thin earpieces, effectively improving wearing comfort. Optionally, the magnets can be arranged in a Halbach array to increase the magnetic force provided, which helps improve wearing stability. Optionally, the magnet is disposed in the first flexible body 14 to avoid interference with other components and to improve the integration and compactness of the earphone 1 structure.

[0166] In the wearing state, the attraction between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can compensate for the clamping force F between the sound-emitting portion 100 and the abutting portion 400. As shown in FIG31 , the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can attract each other, generating an attraction force FA to compensate for the clamping force F provided by the ear hook 300 to the sound-emitting portion 100 and the abutting portion 400. That is, in the wearing state, the clamping force F includes the attraction force 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 component 51 and the second magnetic coupling matching component 52 can be expressed by formula (1):

[0167] Wherein, K is a constant, m1 can represent the magnetic moment of the first magnetic coupling matching part 51, m2 can represent the magnetic moment of the second magnetic coupling matching part 52, d can represent the distance between the first magnetic coupling matching part 51 and the second magnetic coupling matching part 52, X0 can represent the distance between the first magnetic coupling matching part 51 and the second magnetic coupling matching part 52 in the non-wearing state, and x can represent the distance between the first magnetic coupling matching part 51 and the second magnetic coupling matching part 52 in the wearing state due to the movement of the sound-emitting part 100 and the abutting part 400.

[0168] From formula (1), it can be seen that the larger the distance increase X between the sound-emitting part 100 and the contact part 400 is, the larger the distance d between the first magnetic coupling matching part 51 and the second magnetic coupling matching part 52 is, and the attractive force F between the first magnetic coupling matching part 51 and the second magnetic coupling matching part 52 is. A Reduce accordingly.

[0169] 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 the 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 any one of the sound-emitting portion 100 and the abutting portion 400 can be fixed, and the other of the sound-emitting portion 100 and the abutting portion 400 can be connected to the force gauge. The sound-emitting portion 100, the abutting portion 400, and the force gauge can be roughly referred to Figures 29 and 30. Pads of different thicknesses are placed between the sound-emitting portion 100 and the abutting portion 400 to control the distance between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52. At the same time, the force gauge is used to measure the attractive force between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 when pads of different thicknesses are placed. In some embodiments, the attractive force can be measured by a thin film pressure sensor. Specifically, after cutting off the ear hook 300, the thin film pressure sensor and pads of different thicknesses are placed between the sound-emitting part 100 and the abutting part 400, so that the thin film pressure sensor is squeezed by the attraction between the first magnetic coupling matching part 51 in the sound-emitting part 100 and the second magnetic coupling matching part 52 in the abutting part 400, thereby measuring the attraction corresponding to different distances between the first magnetic coupling matching part 51 and the second magnetic coupling matching part 52.

[0170] In some embodiments, when not in use, the ear hook 300 can provide a preload force F0 to abut the sound emitting portion 100 against the abutting portion 400. Detailed description of the preload force can be found in the above description and will not be repeated here.

[0171] In some embodiments, when not wearing the headset, the sound-emitting portion 100 is not in contact with the abutment portion 400. In the non-wearing state, the sound-emitting portion 100 and the abutment portion 400 are not in contact, that is, there is no pre-tightening force between the sound-emitting portion 100 and the abutment portion 400 to cause them to abut each other.

[0172] In some embodiments, in the wearing state, the clamping force F between the sound-emitting portion 100 and the abutting portion 400 includes the elastic force F generated by the elastic deformation of the ear hook 300. k The attraction force 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 also include a pre-tightening force F0 provided by the ear hook 300 for the abutment between the sound-emitting portion 100 and the abutment portion 400 .

[0173] As can be seen from the above, in order to ensure that the earphone 1 is worn firmly on the wearer's ear, the clamping force F (i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force, and the preload force) needs to be greater than the lower limit of the clamping force corresponding to the minimum auricle thickness. In addition, it is necessary to ensure that the clamping force is less than the upper limit of the clamping force corresponding to the maximum auricle thickness to avoid causing discomfort to users with thicker auricles when wearing the ear-clip earphones. In some embodiments, when the distance between the shell of the sound-emitting part 100 and the abutment part 400 is between 3.5 mm and 5.6 mm or 3.8 mm and 5.5 mm, the clamping force F (i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force, and the preload force) can be between 0.20 N and 0.70 N. For example, the clamping force (i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force, and the preload) provided by the ear hook 300 can be determined to be between 0.20 N and 0.70 N, based on a clamping force lower limit of 0.20 N corresponding to the minimum auricle thickness and an upper limit of 0.70 N corresponding to the maximum auricle thickness. In some embodiments, when the distance between the housing of the sound-emitting portion 100 and the abutment portion 400 is between 3.8 mm and 5.5 mm, the clamping force F (i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force, and the preload) can be between 0.25 N and 0.65 N. For another example, the clamping force (i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force, and the preload) provided by the ear hook 300 can be determined to be between 0.25 N and 0.65 N, based on a clamping force lower limit of 0.25 N corresponding to the minimum auricle thickness and an upper limit of 0.65 N corresponding to the maximum auricle thickness.

[0174] As can be seen from the above, the larger the distance X between the sound-emitting portion 100 and the contact portion 400 is, the greater the elastic force F provided by the ear hook 300 is. k The larger the value, the greater the attraction force F between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52. A The smaller it is, the difference between the clamping force F experienced by small-ear users and the clamping force F experienced by large-ear users can be further reduced based on the attraction between the first magnetic coupling matching component 51 and the second magnetic coupling matching component 52. For example, the clamping force F is limited to between 0.3N and 0.5N, that is, the difference between the clamping force experienced by small-ear users and the clamping force experienced by large-ear users is reduced to 0.20N at the same time. In some embodiments, when the distance between the shell of the sound-emitting part 100 and the abutment part 400 is between 3.8mm and 5.5mm, the change in the clamping force F does not exceed 0.20N. It can be seen from this that, as shown in Figure 27, in order to ensure that the difference between the clamping force experienced by small-ear users and the clamping force experienced by large-ear users is small, it can be based on the minimum auricle thickness Xs, the set clamping force lower limit F1, the maximum auricle thickness Xs, and the maximum auricle thickness Xs. mThe set clamping force upper limit F3 limits the change in the clamping force to, for example, no more than 0.20 N (ie, the difference between F3 and F1) when the distance between the sound-emitting portion 100 and the abutting portion 400 varies between 3.8 mm and 5.5 mm.

[0175] In some embodiments, when the distance between the sound-emitting portion 100 and the abutting portion 400 is between 3.8 mm and 5.5 mm, the attraction between the first magnetic coupling matching component 51 and the second magnetic coupling matching component 52 may vary between 0.05 N and 0.10 N.

[0176] As shown in FIG32 , the clamping force F includes the elastic force F 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. The elastic force F k = kX, where k is the elastic coefficient and X is the distance between the sound-generating portion 100 and the contact portion 400. 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 The clamping force F is between s to F m Between, among which, F s =F ma +F sk , F m =F mk +F sa For example, when the distance between the sound-emitting portion 100 and the contact portion 100 is between 3.8 mm and 5.5 mm, the corresponding elastic force is between 0.27 N and 0.35 N. In order to ensure that the clamping force is between 0.3 N and 0.4 N, the attractive force that needs to be compensated is between 0.03 (0.3 to 0.27 = 0.03) N and 0.05 (0.4 to 0.35 = 0.05) N. As can be seen from FIG13A , by setting appropriate magnetic coupling parameters (K, m1, m2, X0, etc.) and elastic coefficient k, it is possible to achieve F within the range of X1 to X2. k The increment and decrement of FA roughly offset each other or largely offset each other, so that the total clamping force F remains substantially stable within the range of X1 to X2, thereby ensuring that the earphone 1 provides a consistent user experience for users with different auricle thicknesses. The range of X1 to X2 includes, for example, 3.8 mm to 5.5 mm.

[0177] In some embodiments, the ear hook 300 further provides a preload force F0, which can be adjusted by adjusting the preload force F0 and the attraction force F A As shown in FIG33 , the ear hook 300 can provide an elastic force F at the same time. k , preload F0 and attraction F A At this time, the clamping force F of the ear hook 300 for users with large ears has exceeded the upper limit of the pre-tightening force. The pre-tightening force F0 can be reduced from F01 to F02 to make the clamping force F within the minimum auricle thickness X s and maximum auricle thickness X m Within the range of , the curve corresponding to the clamping force F is relatively flat, and within the appropriate clamping force range, it shows that the combination of preload force and attraction can improve the wearing stability and comfort of ear clip headphones and reduce the difference in clamping force between users with large ears and users with small ears.

[0178] Optionally, the elastic force and the magnetic coupling force are configured such that when the minimum spacing between the sound-emitting portion 100 and the abutting portion 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 exerted on an object weighing 1 gram.

[0179] By reasonably setting the elastic force and magnetic coupling force, consistent clamping force is provided for users with different ear sizes when worn, ensuring wearing stability while improving wearing comfort.

[0180] Optionally, the magnetic coupling force is configured such that the change in the magnetic coupling force is greater than or equal to 20 g-force when the minimum spacing between the sound-emitting portion 100 and the abutting portion 400 increases from 3.8 mm to 5.5 mm. This configuration allows for a relatively large change in the magnetic coupling force, while minimizing the change in the elastic force. Consequently, the elastic modulus of the earhook 300 can be configured to be relatively small, thereby improving the wearing stability and reliability of the earphone 1.

[0181] Optionally, as shown in FIG34 , the ear hook 300 includes an elastic sheet 301. The elastic sheet 301 is fixed to the sound-emitting portion 100 and the abutting portion 400 at its ends along its length, 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.

[0182] By providing an elastic sheet 301 to provide an elastic force, the earphone 1 can be clamped and worn, and by reasonably setting the ratio of width to thickness, the ear hook 300 is ensured to have sufficient strength while meeting the elastic force requirement, so that the earphone 1 has both wearing comfort and wearing stability. In addition, reasonably setting the width and thickness of the elastic sheet 301 can reduce the torque on the elastic sheet 301 and prevent twisting, and also make the change of the elastic force provided more linear, effectively improving wearing comfort. The elastic sheet 301 can be, for example, a titanium sheet, the outside of which is coated with a flexible material, such as silicone, rubber, elastic resin, polyurethane material, polydimethylsiloxane, PVC, TPE and other materials to improve wearing comfort.

[0183] Optionally, the earphone 1 further includes a flexible printed circuit board (FPC), wherein the flexible printed circuit board is arranged along the length direction of the elastic sheet 301 and is provided on the elastic sheet 301, based on which the difficulty of wiring on the earphone 1 can be effectively reduced. For example, the FPC can be extended and provided roughly in contact with the upper surface or the 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 abutting part 400 respectively. The elastic sheet 301 is provided with a notch 2330 that penetrates the side edge of the elastic sheet 301 along the width direction at a position close to the connecting block 2332. The notch 2330 facilitates sealing, resulting in a better injection molding effect.

[0184] Optionally, as shown in Figure 35 , the earphone 1 has a reference cross-section SF, which is arranged along the length of the earhook 300. When worn, the reference cross-section is substantially parallel to the horizontal plane of the human body. Within the reference cross-section, the earhook 300, the sound-emitting portion 100, and the abutting portion 400 define an inner contour, which includes at least reference points C, E, and H.

[0185] When worn, reference point C is located on the inner contour of the earhook 300 and corresponds to the edge of the helix (e.g., the topmost / 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 helix edge gradually increases, then decreases, and then gradually increases again, starting from reference point C, toward the sound-emitting portion 300 and the abutting portion 400.

[0186] In some embodiments, in a natural state, the outer walls of the sound-emitting portion 210 and 400 do not abut each other. The distance between the outer walls of the sound-emitting portion 100 and the outer walls of the abutting portion 400 is at their shortest point, with the midpoint of the line connecting these shortest distances being point 0. If, in a natural state, the outer walls of the sound-emitting portion 210 and 400 abut each other, the length of the shortest line connecting them is approximately zero, then reference point O should be the midpoint of the arc formed by the abutment area between the outer walls of the sound-emitting portion 210 and 400. Reference point C is the reference point in the inner contour that is farthest from point O. Reference point L is the point on the sound-emitting portion 100 closest to reference point C. Reference point K is the point on the sound-emitting portion 100 farthest from reference point C.

[0187] Optionally, as shown in Figure 35, 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 a 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 angle between line CE and line CH is between 72° and 88°, the inner contour between reference point C and reference point E is located outside line CE, and the inner contour between reference point C and reference point H is located outside line CH.

[0188] In the experience of wearing and using the ear clip-on earphones 1, if the inner contour of the earphones 1 contacts the auricle, it will greatly affect the wearing comfort of the earphones 1 during long-term use and affect the wearer's experience.

[0189] If the angle between lines CE and CH is too small, the inner contour of the earphone 1, particularly the inner contour between reference points C and E, and the inner contour between reference points C and H, will not be able to bypass the helix as much as possible. If it is too large, the overall structural dimensions of the earphone 1 will be increased, affecting the overall aesthetics of the earphone 1. Therefore, the angle between lines CE and CH is set within the range of 72° to 88° to ensure that the inner contour of the earphone 1 can bypass the helix as much as possible, reducing contact between the inner contour of the earphone 1 and the helix, thereby effectively improving the wearing comfort and aesthetics of the earphone 1. For example, in some embodiments, the angle between lines CE and CH can be set to 80°.

[0190] Furthermore, if the length of the connection line CE is too small, the sound-emitting part 100 may not be able to extend into the concha cavity, affecting the sound quality of the earphone 1, or the inner contour of the earphone 1, especially the position at the reference point C, may contact the helix after the sound-emitting part 100 extends into the concha cavity. If it is too long, the overall structural size of the earphone 1 will be increased, affecting the aesthetics of the earphone 1. Therefore, the length of the connection line CE is set within the range of 16 to 19 mm. While ensuring that the sound-emitting part 100 stably extends into the concha cavity, it can ensure that the inner contour and the sound-emitting part 100 do not contact the helix E17, thereby effectively improving the wearing comfort and aesthetics of the earphone 1200 while effectively improving the sound transmission quality of the earphone 1. Furthermore, if the length of the connection line CH is too short, the abutment portion 400 may contact the helix, while if it is too long, the overall structural dimensions of the earphone 1 will be increased, affecting the aesthetics of the earphone 1. Therefore, setting the length of the connection line CH between 6.5 and 9.0 mm can better ensure that the inner contour of the earphone 1 can bypass the helix as much as possible, ensuring that the inner contour of the earphone 1 and the abutment portion 400 do not contact the helix, thereby effectively improving the wearing comfort of the earphone 1. For example, in some embodiments, the length of the connection line CE is set to 17.13 mm, and the length of the connection line CH is set to 7.59 mm.

[0191] Optionally, the arc-chord ratio of the inner contour between reference point C and reference point E is between 1.02 and 1.20. Optionally, the arc-chord ratio of the inner contour between reference point C and the third reference point H is between 1.05 and 1.23.

[0192] Specifically, the arc-chord ratio of the inner contour between reference points C and H specifically 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 contour, and the arc 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 that bulges away from the connecting line CE. In other embodiments, the inner contour may not be set as a curve, but may also be a multi-segment broken line, etc.

[0193] If the arc-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 relatively straight, which is not conducive to the inner contour between reference points C and E bypassing the helix. If the arc-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-chord ratio of the inner contour between reference points C and E is set within the range of 1.02 to 1.20, so that the inner contour between reference points C and E bypasses the helix as much as possible without contacting the helix, thereby effectively improving the wearing comfort of the earphone 1 and the aesthetics of the earphone 10. For example, in some embodiments, the arc-chord ratio between reference points C and E can be set to 1.1.

[0194] Optionally, between reference point L and reference point K and on the side facing the abutment 400, the arc-chord ratio of the outer wall surface of the sound-emitting portion 100 is between 1.4 and 1.7. Based on this setting, the sound-emitting portion 100 becomes more spherical on the side facing the abutment 400. Specifically, between reference point L and reference point K and on the side facing the abutment 400, the outer wall surface of the sound-emitting portion 100 is a continuous arc-shaped surface convex toward the side facing the abutment 400. For example, in some embodiments, the arc-chord ratio of the outer wall surface of the sound-emitting portion 100 between reference point L and reference point K and on the side facing the abutment 400 can be set to 1.64.

[0195] Optionally, a line CL is formed between reference point C and reference point L, line CL is located between line CE and line CH, a length of line CL is between 13 and 17 mm, and an angle between line CL and line CE is between 15° and 27°.

[0196] Specifically, reference point L is the specific point on the sound-emitting portion 100 closest to reference point C. Therefore, the angle between line CL and line CE determines, to a certain extent, whether the sound-emitting portion 100 can be fully positioned within the cavum concha 1. The length of line CL also determines, to a certain extent, whether the inner contour of the earphone 1 can avoid contact with the helix while the sound-emitting portion 100 is fully positioned within the cavum concha 1. Therefore, the length of line CL is set between 13 and 17 mm, and the angle between line CL and line CE is set between 15° and 27°. This ensures that the inner contour of the sound-emitting portion 100 is fully positioned within the cavum concha without contacting or compressing the helix, thereby effectively improving the wearing comfort and sound transmission quality of the earphone 1. For example, in some embodiments, the length of the third line is set to 15 mm, and the angle between line CL and line CE is set to 21°.

[0197] Optionally, a line CK is formed between reference point C and reference point K, line CK is located between line CE and line CH, the length of line CK is between 24 and 30 mm, and the angle between line CK and line CE is between 13° and 25°.

[0198] When the earphone 1 is worn, reference point K is closest to the ear canal. If reference point K is too close to the ear canal, it will block the ear canal, affecting the user experience. If reference point K is too far from the ear canal, it will affect the sound transmission of the earphone 1. Therefore, the length of line CK is set between 24 and 30 mm, and the angle between line CK and line CE is set between 13° and 25°. Based on this, when the sound-emitting portion 100 is inserted into the concha cavity, the area of ​​the sound-emitting portion 100 near reference point K maintains a relatively moderate distance from the ear canal, effectively preventing the sound-emitting portion 100 from blocking the ear canal while effectively improving the sound transmission of the earphone 1. For example, in some embodiments, the length of line CK can be set to 27.7 mm, and the angle between line CK and line CE can be set to 20°.

[0199] Optionally, as shown in FIG35 , along the inner contour, there is an arc segment T1T2 between two points on both sides of the reference point C and 6 mm away from the reference point C, and the arc-chord ratio of the arc segment T1T2 is between 1.03 and 1.10. This setting can effectively reduce stress concentration, effectively improve the service life and reliability of the ear hook 300, and help ensure the wearing stability of the earphone 300.

[0200] The above descriptions are only some embodiments of the present application and do not limit the scope of protection of the present application. Any equivalent device or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. A headset, characterized in that: The earphone includes a sound-emitting part, a butting part and an ear hook, wherein the ear hook connects the sound-emitting part and the butting part, and the ear hook provides an elastic force between the sound-emitting part and the butting part so that the sound-emitting part and the butting part have a clamping force on both sides of the auricle when worn, wherein the ear hook is configured so that the sound-emitting part and the butting part abut against each other in a natural state to form a pre-tightening force.

2. The earphone according to claim 1, characterized in that The elastic coefficient of the ear hook and the preload force are set so that when the minimum interval between the sound-emitting part and the abutment part increases from 3.8 mm to 5.5 mm, the change in the elastic force is less than or equal to 20 grams of force.

3. The earphone according to claim 2, characterized in that The elastic coefficient of the ear hook and the preload force are set so that when the minimum interval between the sound-emitting part and the abutting part increases from 3.8 mm to 5.5 mm, the elastic force is between 25 g-f and 65 g-f.

4. The earphone according to claim 3, characterized in that: The preload force is set to be between 1 gram-force and 25 grams-force, and the elastic coefficient of the ear hook is set so that when the minimum interval is 3.85 mm, the elastic force is between 25 grams-force and 48 grams-force, and when the minimum interval is 5.5 mm, the elastic force is between 26 grams-force and 65 grams-force.

5. The earphone according to claim 1, characterized in that The earphone also includes a magnetic coupling matching structure, which provides a magnetic coupling force between the sound-emitting part and the abutment part. The magnetic coupling force and the elastic force cooperate to form the clamping force. The change trend of the magnetic coupling force with the minimum interval between the sound-emitting part and the abutment part is opposite to the change trend of the elastic force with the minimum gap.

6. The earphone according to claim 5, characterized in that The magnetic coupling matching structure includes a first magnetic coupling matching piece arranged on the sound-generating part and a second magnetic coupling matching piece arranged on the abutting part, and the first magnetic coupling matching piece and the second magnetic coupling matching piece are magnetically attracted to each other.

7. The earphone according to claim 5, characterized in that The elastic force and the magnetic coupling force are configured so that when the minimum interval between the sound-generating portion and the abutting portion increases from 3.85 mm to 5.5 mm, the clamping force is between 25 g-f and 65 g-f.

8. The earphone according to claim 7, characterized in that: The magnetic coupling force is configured such that when the minimum interval between the sound-emitting portion and the abutting portion increases from 3.8 mm to 5.5 mm, a change in the magnetic coupling force is greater than or equal to 20 g-force.

9. The earphone according to claim 1, characterized in that The ear hook comprises an elastic sheet, two ends of which along the length direction are fixed relatively to the sound-generating part and the abutting part respectively, and a ratio of the width to the thickness of the elastic sheet is 8-12.

10. The earphone according to claim 1, characterized in that In a reference cross-section arranged along the length direction of the ear hook, the ear hook, the sound-emitting portion and the abutting portion have an inner contour, the inner contour has a first reference point located on the ear hook and corresponding to the edge of the helix, the inner contour also has a second reference point located on the side of the first reference point facing the sound-emitting portion and a third reference point located on the side of the first reference point facing the abutting portion, a first connecting line is formed between the first reference point and the second reference point, and a second connecting line is formed between the first reference point and the third reference point, in a natural state, the length of the first connecting line is between 16 and 19 mm, the length of the second connecting line is between 6.5 and 9.0 mm, the angle between the first connecting line and the second connecting line is between 72° and 88°, the inner contour between the first reference point and the second reference point is located outside the first connecting line, and the inner contour between the first reference point and the third reference point is located outside the second connecting line.

11. The earphone according to claim 10, characterized in that The arc-chord ratio of the inner contour between the first reference point and the second reference point is between 1.02 and 1.20; the arc-chord ratio of the inner contour between the first reference point and the third reference point is between 0.85 and 1.

23.

12. The earphone according to claim 10, characterized in that The sound-emitting portion has a fourth reference point closest to the first reference point and a fifth reference point farthest from the first reference point. Between the fourth reference point and the fifth reference point and toward the abutting portion, an arc-to-chord ratio of an outer wall surface of the sound-emitting portion is between 1.4 and 1.

7.

13. The earphone according to claim 10, characterized in that A third line is formed between the first reference point and the fourth reference point, the third line is located between the first line and the second line, the length of the third line is between 13 and 17 mm, and the angle between the third line and the first line is 15° to 27°; and / or, a fourth line is formed between the first reference point and the fifth reference point, the fourth line is located between the first line and the second line, the length of the fourth line is between 24 and 30 mm, and the angle between the fourth line and the first line is 13° to 25°.

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