Earphone

Abstract

The invention mainly relates to an earphone which comprises a sound production part, an abutting part and an ear hook, the ear hook comprises an elastic metal piece, the elastic metal piece comprises an elastic section in a reference section arranged in the length direction of the ear hook and in a natural state, and the elastic section is divided into a first elastic section and a second elastic section which are arranged in an arc shape and connected with each other; the curvature radius of at least part of the section, with the connecting point as the starting point, of the first elastic section and the curvature radius of at least part of the section, with the connecting point as the starting point, of the second elastic section are gradually increased, the length of the first elastic section is larger than that of the second elastic section, and at the first end point, away from the connecting point, of the first elastic section, the curvature radius of the second elastic section is larger than that of the second elastic section. The first bullet segment has a first radius of curvature at a first end point of the first bullet segment away from the connection point, and the second bullet segment has a second radius of curvature at a second end point of the second bullet segment away from the connection point, the first radius of curvature being greater than the second radius of curvature. Through the above mode, the wearing stability of the earphone can be effectively improved.

Description

A headset

[0001] This application is based on the Chinese patent application with application number CN202311701969.7 and application date December 11, 2023, and the PCT international application with application number PCT / CN2024 / 076495 and application date February 6, 2024, and claims the priority of the above two patent applications. The entire contents of the two patent applications are incorporated into this application by reference.

Technical field

[0002] The present application relates to the technical field of electronic devices, and in particular to a headset. [Background Technology]

[0003] With the increasing popularity of electronic devices, they have become indispensable social and entertainment tools in people's daily lives, and people's requirements for electronic devices are also getting higher and higher. Electronic devices such as headphones have also been widely used in people's daily lives. They can be used in conjunction with terminal devices such as mobile phones and computers to provide users with an auditory feast. Among them, according to the working principle of headphones, they can generally be divided into air conduction headphones and bone conduction headphones; according to the way users wear headphones, they can generally be divided into headphones, ear-hook headphones and in-ear headphones; according to the interaction between headphones and electronic devices, they can generally be divided into wired headphones and wireless headphones. Among them, most current ear-hook headphones generally have poor wearing stability, and the wearing stability of headphones is an important evaluation indicator when users use headphones. Therefore, how to improve the wearing stability of ear-hook headphones is an urgent problem that needs to be solved. [Summary of the invention]

[0004] An embodiment of the present application provides an earphone, which includes a sound-emitting portion, an abutting portion and an ear hook, wherein the ear hook connects the sound-emitting portion and the abutting portion, the sound-emitting portion is used to convert an electrical signal into an acoustic signal and play it, a battery is provided in the abutting portion, and when worn, the sound-emitting portion and the abutting portion form a clamping state on both sides of the user's auricle, and the sound-emitting portion is located in the concha cavity, the ear hook includes an elastic metal part, and within a reference cross-section set along the length direction of the ear hook and in a natural state, the elastic metal part includes an elastic segment, and the elastic segment is further divided into a first sub-elastic segment and a second sub-elastic segment, each of which is arranged in an arc shape and connected to each other, and the first sub-elastic segment is connected to the sound-emitting portion , the second sub-elastic segment is connected to the abutment portion; wherein, in the direction away from the connection point between the first sub-elastic segment and the second sub-elastic segment, the curvature radius of at least a portion of the first sub-elastic segment starting from the connection point and the curvature radius of at least a portion of the second sub-elastic segment starting from the connection point gradually increase, the length of the first sub-elastic segment is greater than the length of the second sub-elastic segment, and at the first end point of the first sub-elastic segment away from the connection point, the first sub-elastic segment has a first curvature radius, and at the second end point of the second sub-elastic segment away from the connection point, the second sub-elastic segment has a second curvature radius, and the first curvature radius is greater than the second curvature radius.

[0005] In some embodiments, a first connecting line is formed between the connection point and the first endpoint, the length of the first connecting line is between 10 and 18 mm, and the first sub-elastic segment is located outside the first connecting line. A second connecting line is formed between the connection point and the second endpoint, the length of the second connecting line is between 2 and 9 mm, and the second sub-elastic segment is located outside the second connecting line.

[0006] In some embodiments, the arc-chord ratio of the first elastic sub-segment is between 1.01 and 1.1, and the arc-chord ratio of the second elastic sub-segment is between 1.01 and 1.12.

[0007] In some embodiments, at the connection point, the ear hook has a third radius of curvature, the third radius of curvature is between 4-7 mm, the difference between the first radius of curvature and the third radius of curvature is between 10-25 mm, and the difference between the second radius of curvature and the third radius of curvature is between 1-5 mm.

[0008] In some embodiments, the curvature radius of the first sub-elastic segment gradually increases in the direction away from the connection point and between the connection point and the first endpoint, and the curvature radius of the second sub-elastic segment gradually increases in the direction away from the connection point and between the connection point and the second endpoint.

[0009] In some embodiments, at the first endpoint, the first sub-elastic segment has a first tangential direction, at the second endpoint, the second sub-elastic segment has a second tangential direction, and the angle between the first tangential direction and the second tangential direction is between 43° and 100°.

[0010] In some embodiments, at the connection point, the ear hook has a normal direction, the angle between the first tangential direction and the normal direction is between 15° and 41°, and the angle between the second tangential direction and the normal direction is between 24° and 80°.

[0011] In some embodiments, the outer wall surface of the sound-emitting portion abuts the outer wall surface of the abutting portion, and the arc formed by the abutting area in the reference section has a midpoint, and the angle between the line between the midpoint and the connection point and the normal direction is between 0° and 8°.

[0012] In some embodiments, the ear hook includes a bistable structure, which is arranged in the elastic section, and the bistable structure is used to enable the ear hook to have a first stable position and a second stable position; the minimum distance between the generating part and the abutting part when the ear hook is in the first stable position is greater than the minimum distance when the ear hook is in the second stable position.

[0013] In some embodiments, the bistable structure includes a protrusion and a rest portion connected to the elastic segment at intervals, the rest portion rests against a protruding point of the protrusion, and when the rest portion rests against both sides of the protruding point, a first stable position and a second stable position are formed.

[0014] In some embodiments, in a natural state, the sound-emitting portion and the abutting portion abut against each other under the action of the ear hook.

[0015] In some embodiments, the reference cross section is the earhook symmetry plane of the earhook.

[0016] In some embodiments, the elastic metal member is an elastic metal wire, and the ear hook symmetry plane is the plane where the central axis of the elastic metal wire is located.

[0017] In some embodiments, the elastic metal part is an elastic metal sheet, and the two ends of the elastic metal sheet are arranged opposite to each other along the length direction and are respectively connected to the sound-emitting part and the abutting part, and when worn, the thickness direction of the elastic metal sheet is toward or away from the helix, and the ear hook symmetry plane divides the elastic metal sheet in the middle along the width direction of the elastic metal sheet.

[0018] In some embodiments, between the first endpoint and the second endpoint, the width-to-thickness ratio of the elastic metal sheet is between 8 and 20.

[0019] The beneficial effect of the present application is that, through the above-described arrangement, the elastic segment is more closely aligned with the physiological structure of the helix and concha, thereby effectively enhancing the elastic segment's clamping effect and, in turn, effectively improving the wearing stability of the earphone. Furthermore, the first endpoint is where the first elastic sub-segment connects to the sound-producing portion, and the second endpoint is where the second elastic sub-segment connects to the abutment portion. Because there is a sudden change in the contour at the junction of the helix and concha, a first radius of curvature is provided at the first endpoint, and a second radius of curvature is provided at the second endpoint. This allows the elastic segment to more closely match the physiological structure of the helix and concha, thereby effectively enhancing the elastic segment's clamping effect and, in turn, effectively improving the wearing stability of the earphone.

[0020] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application.

Brief Description of the Drawings

[0021] 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.

[0022] FIG1 is a front view schematic diagram of the earphones of the present application worn behind the ears of a person with large ears or a person with small ears;

[0023] FIG2 is a schematic diagram of the three-dimensional structure of the earphone shown in FIG1 ;

[0024] FIG3 is a schematic diagram of a cross section aa of the earphone shown in FIG1 after it is worn on the ear of a person with large ears;

[0025] FIG4 is a schematic diagram of a section aa of the earphone shown in FIG1 worn behind the ear of a person with small ears;

[0026] FIG5 is a schematic diagram of a reference section bb of the earphone shown in FIG2 in a natural state where the abutting portion and the sound-emitting portion do not abut;

[0027] FIG6 is a structural diagram of a reference section bb of the earphone shown in FIG2 , where the abutting portion and the sound-emitting portion abut against each other in a natural state;

[0028] FIG7 is another schematic diagram of a reference section bb of the earphone shown in FIG2 in a natural state where the abutting portion and the sound-emitting portion do not abut;

[0029] FIG8 is another schematic diagram of a reference section bb of the earphone shown in FIG2 in a natural state where the abutting portion and the sound-emitting portion do not abut;

[0030] FIG9 is another schematic diagram of a reference section bb of the earphone shown in FIG2 in a natural state where the abutting portion and the sound-emitting portion do not abut;

[0031] FIG10 is another schematic diagram of a reference section bb of the earphone shown in FIG2 in a natural state where the abutting portion and the sound-emitting portion do not abut;

[0032] FIG11 is another schematic diagram of a reference section bb of the earphone shown in FIG2 in a natural state where the abutting portion and the sound-emitting portion do not abut;

[0033] FIG12 is another schematic diagram of a reference section bb of the earphone shown in FIG2 in a natural state where the abutting portion and the sound-emitting portion do not abut;

[0034] FIG13 is another schematic diagram of a reference section bb of the earphone shown in FIG2 in a natural state where the abutting portion and the sound-emitting portion do not abut;

[0035] FIG14 is a schematic structural diagram of the earphone shown in FIG1 , showing an elastic metal sheet. [Specific implementation method]

[0036] The present application will be further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application and do not limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application and not all embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of this application. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0038] In conjunction with 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, for the sake of convenience of description and in conjunction with Figure 1 , this application, unless otherwise specified, specifically refers to the external auditory canal 101 as its entrance away from the eardrum (i.e., the ear hole). 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, which can be simply regarded as the aforementioned ear hole being located at the bottom of the cavum concha E12.

[0039] Furthermore, the tragus E19 is located outside the external auditory canal of the ear. Compared to the cavum conchae E12, the cymba conchae E13, and the 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 in the direction close to the user's head, while the tragus E19 is convex toward the front of the ear in the direction away from the user's head. The "front of the ear" is a concept relative to the "back of the ear." The former refers to the side of the ear away from the head, such as Figure 1, and the latter refers to the side of the ear toward the head. Both of them refer to the user's ear.

[0040] Furthermore, different users may have individual differences, resulting in different shapes, sizes, and other dimensional differences in the ears. For the convenience of description, and to reduce (or even eliminate) individual differences between different users, for the convenience of description and understanding, unless otherwise specified, this specification will mainly use an ear model with a "standard" shape and size as a reference to further describe how the acoustic device in different embodiments is worn on the ear model. For example, a simulator containing a head and its (left and right) ears, such as GRAS 45BC KEMAR, can be made based on ANSI: S3.36, S3.25 and IEC: 60318-7 standards as a reference for wearing the acoustic device, thereby presenting the scenario of most users wearing the acoustic device normally. Just as an example, the ear used as a reference can have the following relevant characteristics: the size of the projection of the auricle on the sagittal plane in the vertical axis direction can be in the range of 49.5mm-74.3mm, and the size of the projection of the auricle on the sagittal plane in the sagittal axis direction can be in the range of 36.6mm-55mm. Therefore, in this application, descriptions such as "worn by the wearer", "in a wearing state" and "in a wearing state" may refer to the acoustic device described in this application being worn on the ear of the aforementioned simulator. Of course, taking into account the individual differences between different users, the structure, shape, size, thickness, etc. of one or more parts of the ear EAR may have certain differences. In order to meet the needs of different users, the acoustic device can be designed differently. These differentiated designs can be manifested in that the characteristic parameters of one or more structures in the acoustic device (for example, the sound-emitting part 210, ear hook 230, etc. mentioned below) can have different ranges of values ​​to adapt to different ears.

[0041] It should be noted that in fields such as medicine and anatomy, the human body can be defined as three basic planes: the sagittal plane, the coronal plane, and the horizontal plane, as well as three basic axes: the sagittal axis, the coronal axis, and the vertical axis. The sagittal plane refers to a plane perpendicular to the ground, along the anterior-posterior direction of the body, dividing the body into left and right halves. The coronal plane refers to a plane perpendicular to the ground, along the lateral direction of the body, dividing the body into anterior-posterior halves. The horizontal plane refers to a plane parallel to the ground, along the lateral direction of the body, dividing the body into upper and lower halves. Accordingly, the sagittal axis refers to the axis along the lateral direction of the body and perpendicular to the coronal plane; the coronal axis refers to the axis along the lateral direction of the body and perpendicular to the sagittal plane; and the vertical axis refers to the axis along the lateral direction of the body and perpendicular to the horizontal plane. Furthermore, the "front side of the ear" mentioned in this application is a concept relative to the "back side of the ear". The former refers to the side of the ear away from the head, and the latter refers to the side of the ear facing the head. They are both for the user's ear. Among them, by observing the ear of the above-mentioned simulator along the direction of the human body's coronal axis, a schematic diagram of the front side outline of the ear can be obtained as shown in Figure 1. Based on this, combined with Figure 1, the three directions of X, Y and Z can be simply regarded as the human body's coronal axis, human body's sagittal axis and human body's vertical axis respectively; the three planes of XY, XZ and YZ can be simply regarded as the human body's horizontal plane, human body's coronal plane and human body's sagittal plane respectively.

[0042] Referring to Figures 2-4 , this application discloses an earphone 200, which is an ear clip-on earphone. The earphone 200 includes a sound-producing portion 210 that is inserted into the wearer's cavum concha E12, an abutting portion 220 that abuts the back of the wearer's ear, and an ear hook 230 connected to the sound-producing portion 210 and the abutting portion 220. The sound-producing portion 210 is a sound playback device that converts electrical signals into acoustic signals and plays them back to the wearer. When worn, it is located in the cavum concha E12. Specifically, the abutting portion 220 forms a clamping relationship with the sound-producing portion 210, allowing the entire earphone 200 to be worn on the wearer's helix E17. In some embodiments, the abutting portion 220 can function as a battery compartment for installing batteries or other components. Alternatively, the abutting portion 220 can function as a battery compartment, with batteries attached to the sound-producing portion 210. The ear hook 230 is a component that provides clamping force. The two ends of the ear hook 230 are respectively connected to the sound-emitting part 210 and the abutment part 220. When worn, the ear hook 230 bypasses the helix E17 so that the sound-emitting part 210 and the abutment part 220 are located on both sides of the human ear along the coronal axis of the human body, and the sound-emitting part 210 extends to the concha cavity E12 to transmit sound to the ear canal.

[0043] Further referring to Figures 2-6, the earphone 200 has a reference cross-section bb, which is arranged along the length of the earhook 230. When worn, the reference cross-section bb is substantially parallel to the horizontal plane of the human body. Within the reference plane, the earhook 230, the sound-emitting portion 210, and the abutting portion 220 define an inner contour 300. This inner contour 300 includes at least reference points C, E, H, and L. The earphone 200 also includes a reference point O.

[0044] Among them, reference point C is a reference point on the inner contour 300 that has a special positional relationship with the helix E17. Specifically, in the wearing state, reference point C is located on the ear hook 230 and corresponds to the reference point of the edge 1071 of the helix E17, and reference point C is the turning point of the inner contour 300. For example, the inner contour 300 is a contour line that protrudes away from the helix E17 as a whole, wherein the curvature radius of at least the part of the inner contour 300 located at the edge 1071 first gradually increases, then gradually decreases, and then gradually increases again from the reference point C as the starting point toward the sound-emitting part 210 and the abutting part 220.

[0045] Further referring to Figure 5, the reference point O is a reference point with a special positional relationship between the sound-emitting part 210 and the abutting part 220. In the natural state, the midpoint of the shortest connecting line Q1Q2 between the outer wall surface of the sound-emitting part 210 and the outer wall surface of the abutting part 220 is the reference point O. As shown in Figure 4, in some embodiments, in a natural state, there is no abutment between the outer wall surface of the sound-emitting part 210 and the outer wall surface of the abutting part 220, wherein a tangent QL1 exists at the reference point Q1 of the outer wall surface of the sound-emitting part 210 (wherein the tangent QL1 is a line passing through the reference point Q1 and tangent to the outer wall surface of the sound-emitting part 210), and a tangent QL2 exists at the reference point Q2 of the outer wall surface of the abutting part 220 (wherein the tangent QL2 is a line passing through the reference point Q2 and tangent to the outer wall surface of the abutting part 220), and the tangents QL1 and QL2 are parallel to each other, wherein the shortest connecting line Q1Q2 is the normal of the outer wall surface of the sound-emitting part 210 at the reference point Q1, and is the normal of the outer wall surface of the abutting part 220 at the reference point Q2, and is the connecting line when the distance between the tangents QL1 and QL2 is the shortest.

[0046] Alternatively, referring further to FIG6 , if the outer wall of the sound-emitting portion 210 and the outer wall of the abutting portion 220 abut in a natural state, the length of the shortest line connecting the outer walls of the sound-emitting portion 210 and the outer walls of the abutting portion 220 is approximately zero. In this case, reference point O should be the midpoint of arc Q3Q4 formed by the abutment region between the outer walls of the sound-emitting portion 210 and the outer walls of the abutting portion 220. Reference point E is the reference point from reference point C toward the sound-emitting portion 210, reference point H is the reference point from reference point C toward the abutting portion 220, and reference point L is the reference point on the sound-emitting portion 210 closest to reference point C.

[0047] Therefore, further referring to Figures 5-6, in some embodiments, the reference point C can be directly positioned through the positional relationship between the reference point C and the edge 1071 of the helix E17, so that the reference point C is used as the first reference point, and the reference point E, reference point H, reference point L and reference point O are further defined respectively through the reference point C, and the reference point E, reference point H, reference point L and reference point O are respectively used as the second reference point, the third reference point, the fourth reference point and the fifth reference point to define the overall structure of the earphone 200. Based on this, the overall structure of the earphone 200 can be more matched with the physiological structure of the helix E17 and the concha E12, thereby effectively improving the wearing comfort of the earphone 200.

[0048] Optionally, in some embodiments, reference point C is also a reference point with a special positional relationship between reference point O and inner contour 300, that is, reference point C is the reference point farthest from inner contour 300 to reference point O. Therefore, reference point C can be positioned using reference point O, that is, reference point O is used as the first reference point, and reference point C is then determined using the special positional relationship between reference point O and inner contour 300, and reference point C is used as the second reference point. Furthermore, reference point E, reference point H, and reference point L are defined respectively by reference point O and reference point C, and reference point E, reference point H, and reference point L are used as the third, fourth, and fifth reference points, respectively, to define the overall structure of the earphone 200. Based on this, the overall structure of the earphone 200 can be more closely aligned with the physiological structure of the helix E17 and the cavum concha E12, thereby effectively improving the wearing comfort of the earphone 200.

[0049] Optionally, referring to Figures 3-5, in some embodiments, 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, and can be optionally 17 mm or 18 mm. The length of line CH is between 6.5 and 9.0 mm, and can be optionally 6.8 mm, 7.3 mm, 7.8 mm, 8.1 mm, 8.5 mm, or 8.8 mm. The angle R1 between line CE and line CH is between 72° and 88°, and can be optionally 75°, 78°, 81°, or 85°. The inner contour 300 between reference point C and reference point E is located outside 310 of line CE, and the inner contour 300 between reference point C and reference point H is located outside 320 of line CH. For example, in some embodiments, the length of line CE may be between 16 and 18.4 mm or 16.5 and 18 mm, etc., which fall within the range of 16 to 19 mm, and the length of line CH may be between 6.6 and 8.6 mm or 6.8 and 8 mm, etc., which fall within the range of 6.5 to 9.0 mm.

[0050] Specifically, reference point E is a reference point on the side of reference point C facing the sound-emitting portion 210. It forms a line CE with reference point C, and the inner contour 300 between reference point C and reference point E is located outside 310 of line CE. Reference point H is a reference point on the side of reference point C facing the abutment portion 220. It forms a line CH with reference point C, and the inner contour 300 between reference point C and reference point H is located outside 320 of line CH. During the experience of wearing and using the ear clip-on earphone 200, if the inner contour 300 of the earphone 200 contacts the helix E17, it will significantly affect the wearing comfort of the earphone 200 during long-term use, affecting the wearer's experience. In some implementations, line CE is also referred to as the first line or the second line, and line CH is also referred to as the second line or the third line.

[0051] If the angle R1 between the lines CE and CH is too small, the inner contour 300 of the earphone 200, particularly the inner contour 300 between reference points C and E and the inner contour 300 between reference points C and H, will not be able to bypass the helix E17 as much as possible. If the angle R1 is too large, the overall volume of the earphone 200 will increase, resulting in a heavier overall mass and unstable wearing of the earphone 200. Therefore, setting the angle R1 between the lines CE and CH within the range of 72° to 88° can better ensure that the inner contour 300 of the earphone 200 bypasses the helix E17 as much as possible, reducing contact between the inner contour 300 of the earphone 200 and the helix E17 while effectively reducing the overall volume of the earphone 200, thereby effectively improving the wearing comfort and wearing stability of the earphone 200. For example, in some embodiments, the angle R1 between the lines CE and CH can be set to 80°.

[0052] Furthermore, if the length of the connection line CE is too small, the sound-emitting part 210 may not be able to extend into the concha cavity E12, affecting the sound quality of the earphone 200, or after the sound-emitting part 210 extends into the concha cavity E12, the inner contour 300 of the earphone 200, especially the position at the reference point C, may contact the helix E17. If it is too long, the overall structural volume of the earphone 200 will be increased, making the overall mass of the earphone 200 larger, resulting in unstable wearing of the earphone 200. Therefore, the length of the connection line CE is set within the range of 16 to 19 mm or 16 to 18.4 mm. While ensuring that the sound-emitting part 210 can stably extend into the concha cavity E12 and ensuring that the inner contour 300 and the sound-emitting part 210 do not contact the helix E17, it can also effectively reduce the overall volume of the earphone 200, thereby effectively improving the wearing comfort and sound transmission quality of the earphone 200, and also effectively improving the wearing stability of the earphone 200. Furthermore, if the length of the connection line CH is too small, the abutment portion 220 may contact the helix E17. If it is too long, the overall volume of the earphone 200 may be increased, resulting in a larger overall mass of the earphone 200 and an unstable wearing condition. Therefore, setting the length of the connection line CH to 6.5-9.0 mm or 6.6-8.6 mm can better ensure that the inner contour 300 of the earphone 200 can bypass the helix E17 as much as possible, thereby ensuring that the inner contour 300 and the abutment portion 220 of the earphone 200 do not contact the helix E17. It can also effectively reduce the overall volume of the earphone 200, thereby effectively improving the wearing comfort and wearing stability of the earphone 200. 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.

[0053] Optionally, further referring to Figures 3-4, in some embodiments, the curved shape of the inner contour 300 matches the physiological structure of the helix E17 and the concha E12. Based on this, the inner contour 300 can bypass the helix E17 as much as possible without contacting the helix E17, and can also effectively reduce the overall volume of the earphone 200.

[0054] For example, in some embodiments, the radius of curvature of the inner contour 300 is configured to gradually increase, then gradually decrease, and then gradually increase again, starting from reference point C, toward the sound-emitting portion 210 and the abutting portion 220, respectively. Reference points E and H are the minimum points of the curvature radius. Specifically, the radius of curvature gradually increases, then gradually decreases, and then gradually increases again, starting from reference point C, toward the sound-emitting portion 210 and the abutting portion 220, respectively. Based on this, the inner contour 300 is more closely aligned with the physiological structure of the helix E17 and the cavum concha E12, thereby effectively reducing the overall volume of the earphone 200 and improving the wearing stability of the earphone 200. At the same time, when the earphone 200 is being worn, the inner contour 300 is effectively prevented from contacting the helix E17, thereby effectively improving the wearing comfort of the earphone 200. Among them, reference point E and reference point H are two reference points of reference point C toward the sound-emitting part 210 and toward the abutment part 220 respectively, wherein reference point E and reference point H are set as the minimum points of the curvature radius of the inner contour 300, and reference point E is the first minimum point of the curvature radius after the inner contour 300 extends from reference point C toward the sound-emitting part 210, and reference point H is the first minimum point of the curvature radius after the inner contour 300 extends from reference point C toward the abutment part 220. Based on this, after the sound-emitting part 210 and the abutment part 220 respectively bypass the helix E17, the sound-emitting part 210 and the abutment part 220 can fully abut against the two sides of the ear clip cavity along the sagittal axis of the human body, thereby effectively improving the wearing stability of the earphone 200.

[0055] For another example, in some embodiments, the straight-line distance between the reference point C and other points on the inner contour 300 first gradually increases and then gradually decreases toward the sound-emitting portion 210 and the abutting portion 220, respectively, with the reference point E and the reference point E being the maximum points of the straight-line distance. Specifically, starting from the reference point C, the straight-line distance between other points on the inner contour 300 and the reference point C first gradually increases and then gradually decreases toward the sound-emitting portion 210 and the abutting portion 220, respectively. Based on this, the inner contour 300 is more closely aligned with the physiological structure of the helix E17 and the cavum concha E12, thereby effectively reducing the overall volume of the earphone 200 and improving the wearing stability of the earphone 200. At the same time, when the earphone 200 is in the worn state, the inner contour 300 can also be effectively prevented from contacting the helix E17, thereby effectively improving the wearing comfort of the earphone 200. Among them, reference point E and reference point H are set as the maximum points from the inner contour 300 to the reference point C, and reference point E is the first maximum point where the inner contour 300 and reference point C appear after the inner contour 300 extends from reference point C to the sound-emitting part 210, and reference point H is the first maximum point where the inner contour 300 and reference point C appear after the inner contour 300 extends from reference point C to the abutment part 220. Based on this, after the sound-emitting part 210 and the abutment part 220 respectively bypass the helix E17, the sound-emitting part 210 and the abutment part 220 can fully abut against both sides of the ear clip cavity along the sagittal axis of the human body, thereby effectively improving the wearing stability of the earphone 200.

[0056] Alternatively, referring to FIG5 , in some embodiments, the arc-chord ratio of the inner contour 300 between reference points C and E is between 1.02 and 1.20, and may be 1.05, 1.08, 1.12, 1.16, or 1.18. Alternatively, in some embodiments, the arc-chord ratio of the inner contour 300 between reference points C and E may be between 1.02 and 1.16, or between 1.02 and 1.1, or other values ​​falling within the range of 1.02 to 1.20.

[0057] Specifically, the arc-chord ratio of the inner contour 300 between reference points C and E specifically refers to the ratio of the actual length of the inner contour 300 between reference points C and E to the length of the connecting line CE. For example, in some embodiments, the inner contour 300 is a curved contour, and the arc-chord ratio of the inner contour 300 between reference points C and E is the ratio of the arc length of the inner contour 300 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 300 between reference points C and E is a continuous arc that bulges away from the connecting line CE. In other embodiments, the inner contour 300 may not be a curve, but may be a plurality of straight lines.

[0058] A too small arc-chord ratio of the inner contour 300 between reference points C and E makes the inner contour 300 between reference points C and E relatively straight, which is not conducive to the inner contour 300 between reference points C and E passing around the helix E17. A too large arc-chord ratio between reference points C and E causes the inner contour 300 between reference points C and E to be too curved, increasing the overall volume of the earphone 200. Therefore, the arc-chord ratio of the inner contour 300 between reference points C and E is set within a range of 1.02 to 1.20 or 1.02 to 1.16, so that the inner contour 300 between reference points C and E can pass around the helix E17 as much as possible without contacting the helix E17, thereby effectively improving the wearing comfort and wearing stability of the earphone 200. For example, in some embodiments, the arc-chord ratio between reference points C and E can be set to 1.1.

[0059] Optionally, referring to FIG5 , a first maximum distance L1 is defined between line CE and inner contour 300 along a perpendicular line to line CE. This maximum distance L1 ranges from 2.1 to 3.7 mm, and may be 2.3, 2.6, 2.9, 3.2, or 3.6 mm. Furthermore, the ratio of the distance from the intersection of the perpendicular line corresponding to first maximum distance L1 and line CE to reference point C to the length of the first line ranges from 0.2 to 0.55, and may be 0.3, 0.4, or 0.52.

[0060] Specifically, the distance between the line CE and the inner contour 300 in the reference plane refers to a vertical line segment that intersects the line CE and the inner contour 300 and is perpendicular to the line CE. Among them, the maximum distance between the connecting line CE and the inner contour 300 between the reference points C and E is also the first maximum distance L1. The size of the first maximum distance L1 cannot be too small or too large. If it is too small, the arc-chord ratio of the inner contour 300 between the reference points C and E will be reduced, resulting in the inner contour 300 between the reference points C and E failing to fully bypass the helix E17, affecting the wearing comfort of the earphone 200. If it is too large, the arc-chord ratio of the inner contour 300 between the reference points C and E will be increased, resulting in the inner contour 300 between the reference points C and E being too curved, increasing the overall volume of the earphone 200. Therefore, setting the first maximum distance L1 within the range of 2.1 to 3.7 mm can effectively prevent the inner contour 300 between the reference points C and E from contacting the helix E17, thereby effectively improving the wearing comfort of the earphone 200, and can also effectively improve the wearing stability of the earphone 200.

[0061] Furthermore, the ratio of the distance from the intersection of the perpendicular line corresponding to the first maximum distance L1 and the line CE to the reference point C to the length of the first line is set within the range of 0.2 to 0.55, so that the relative position relationship between the position where the first maximum distance L1 appears between the inner contour 300 and the line CE and the line CE is more reasonable, thereby ensuring that the inner contour 300 between the reference point C and the reference point E does not contact the helix E17, thereby improving the wearing comfort of the earphone 200 and effectively improving the wearing stability of the earphone 200.

[0062] For example, in some embodiments, the first maximum distance L1 is 2.88 mm, and a ratio of a distance from an intersection of a perpendicular line corresponding to the first maximum distance L1 and the line CE to the reference point C to the length of the first line is approximately 0.45.

[0063] Optionally, the arc-chord ratio of the inner contour 300 between the reference point C and the reference point H is between 1.05 and 1.23, for example, 1.07, 1.1, 1.15, etc. For example, in some embodiments, the arc-chord ratio of the inner contour 300 between the reference point C and the reference point H may also be between 1.10 and 1.23, etc.

[0064] Specifically, the arc-chord ratio of the inner contour 300 between reference points C and H specifically refers to the ratio of the actual length of the inner contour 300 between reference points C and H to the length of the connecting line CH. For example, in some embodiments, the inner contour 300 is a curved contour, and the arc-chord ratio of the inner contour 300 between reference points C and H is the ratio of the arc length of the inner contour 300 between reference points C and H to the length of the connecting line CH. It is worth noting that in this embodiment, the inner contour 300 between reference points C and H is a continuous arc that bulges away from the connecting line CH. In other embodiments, the inner contour 300 may not be a curve, but may be a plurality of straight lines.

[0065] Among them, if the arc-chord ratio of the inner contour 300 between the reference point C and the reference point H is too small, the inner contour 300 between the reference point C and the reference point H will be relatively straight, which is not conducive to the inner contour 300 between the reference point C and the reference point H to bypass the helix E17. If the arc-chord ratio of the inner contour 300 between the reference point C and the reference point H is too large, the inner contour 300 between the reference point C and the reference point H will be too curved, increasing the overall volume of the earphone 200. Therefore, the arc-chord ratio of the inner contour 300 between the reference point C and the reference point E is set within the range of 1.10 to 1.23, so that the inner contour 300 between the reference point C and the reference point H can bypass the helix E17 as much as possible without contacting the helix E17, thereby effectively improving the wearing comfort of the earphone 200 while also effectively improving the wearing stability of the earphone 200. Furthermore, by setting the arc-chord ratio of the inner contour 300 between reference points C and E within a range of 1.10 to 1.23, the inner contour 300 can conform to the contours of the ears of most people, thereby effectively improving the applicability of the earphone 200. For example, in some embodiments, the arc-chord ratio of the inner contour 300 between reference points C and E is set to 1.19.

[0066] Optionally, referring to FIG5 , along a perpendicular to line CH, a second maximum distance L2 exists between the second connecting line and the inner contour 300. The second maximum distance L2 ranges from 1.05 to 2.0 mm, and may be 1.08, 1.12, 1.3, 1.34, 1.48, 1.72, 1.86, or 1.91. The ratio of the distance from the intersection of the perpendicular corresponding to the second maximum distance L2 and the second connecting line to the reference point C to the length of line CH ranges from 0.4 to 0.8, and may be 0.43, 0.49, 0.56, 0.63, 0.66, 0.71, or 0.77. For example, in some embodiments, the second maximum distance L2 may be between 1.5 and 2.0 mm or 1.05 and 1.18 mm, etc., in the range of 1.05 to 2.0 mm. The ratio of the distance from the intersection of the perpendicular line corresponding to the second maximum distance L2 and the second connecting line to the reference point C to the length of the connecting line CH may be between 0.41 and 0.61, etc., in the range of 0.4 to 0.8.

[0067] Specifically, the distance between the connecting line CH and the inner contour 300 in the reference plane refers to a vertical line segment that intersects the connecting line CH and the inner contour 300 and is perpendicular to the connecting line CH. Among them, the maximum distance between the connecting line CH and the inner contour 300 between the reference points C and H is also the second maximum distance L2. The size of the second maximum distance L2 cannot be too small or too large. If it is too small, the arc-chord ratio of the inner contour 300 between the reference points C and H will be reduced, resulting in the inner contour 300 between the reference points C and H not being able to fully bypass the helix E17, affecting the wearing comfort of the earphone 200. If it is too large, the arc-chord ratio of the inner contour 300 between the reference points C and H will be increased, resulting in the inner contour 300 between the reference points C and H being too curved, which is easy to squeeze the helix E17, affecting the wearing comfort of the earphone 200. Therefore, setting the second maximum distance L2 within the range of 1.5-2.0 mm or 1.05-1.18 mm can effectively prevent the inner contour 300 between the reference points C and H from contacting the helix E17, thereby preventing the earphone 200 from squeezing the helix E17, thereby effectively improving the wearing comfort of the earphone 200.

[0068] Furthermore, the ratio of the distance from the intersection of the perpendicular line corresponding to the second maximum distance L2 and the connecting line CH to the reference point C to the length of the connecting line CH is set between 0.4 and 0.8 or 0.41 and 0.61. This ensures that the relative positional relationship between the location where the first maximum distance L1 occurs between the inner contour 300 and the connecting line CE and the connecting line CE is more reasonable, ensuring that the inner contour 300 between reference points C and reference points E does not contact the helix E17, thereby improving the wearing comfort of the earphone 200 and effectively enhancing the wearing stability of the earphone 200. For example, in some embodiments, the second maximum distance L2 is set to 1.8 mm, and the ratio of the distance from the intersection of the perpendicular line corresponding to the second maximum distance L2 and the second connecting line to the reference point C to the length of the connecting line CH is set to 0.51.

[0069] Alternatively, referring to FIG. 5 , in some embodiments, the arc-chord ratio between two points on either side of reference point C and 5 mm from reference point C along inner contour 300 ranges from 1.03 to 1.12, and may be 1.06, 1.08, 1.1, etc. In this embodiment, inner contour 300 between two points 5 mm from reference point C is a continuous arc that bulges away from sound-emitting portion 210 and abutting portion 220.

[0070] Specifically, when the earphone 200 is in the wearing state, the reference point C is the point on the inner contour 300 corresponding to the edge 1071 of the helix E17. The area of ​​the inner contour 300 near the reference point C is one of the areas where the earphone 200 is likely to come into contact with the helix E17. Therefore, if the arc-to-depth ratio of the inner contour 300 in this area is too small, the overall volume of the earphone 200 will be increased, affecting the wearing stability of the earphone 200. If it is too large, it will affect the matching of the inner contour 300 and the helix E17, making it easy for the earphone 200 to come into contact or be squeezed with the helix E17, thereby affecting the wearing comfort of the earphone 200.

[0071] For example, for most wearers, the inner contour 300 between two points on either side of reference point C, each 5 mm away from reference point C, is the primary area where the earphone 200 is likely to contact the helix E17. Therefore, setting the arc-chord ratio between two points on either side of reference point C, each 5 mm away from reference point C, to a value within the aforementioned range allows the inner contour 300 of the earphone 200 to better conform to the contour of the helix E17, effectively preventing contact or compression between the earphone 200 and the helix E17 when worn. This effectively improves both the wearing comfort and the wearing stability of the earphone 200. Alternatively, the arc-chord ratio between two points on either side of reference point C, each 5 mm away from reference point C, is between 1.03 and 1.12, ensuring that the arc of the inner contour 300 between two points on either side of reference point C, each 5 mm away from reference point C, is moderate. This allows for more uniform deformation distribution of the earhook during wear, reduces the likelihood of stress concentration, and effectively improves the stability and service life of the earphone 200.

[0072] Alternatively, referring to FIG. 7 , in some embodiments, a line CL is formed between reference point C and reference point L. Line CL is located between line CE and line CH. The length of line CL is between 13 and 17 mm, and may be 13.6, 14.1, 15.2, 16.3, or 16.6 mm. An angle R2 between line CL and line CE is between 15° and 27°, and may be 16°, 16.6°, 18.3°, 19°, 19.5°, 21°, 24°, 25.5°, 26°, or 26.8°.

[0073] Specifically, in some embodiments, line CL is also referred to as the third or fourth line. Reference point L is the specific point on the sound-producing portion 210 closest to reference point C. Therefore, the angle between line CL and line CH determines, to a certain extent, whether the sound-producing portion 210 can be adequately positioned within the cavum concha E12. The length of line CL also determines, to a certain extent, whether the sound-producing portion 210 can be adequately positioned within the cavum concha E12 without contacting the helix E17. Therefore, the length of line CL is set between 13 and 17 mm, and the angle R2 between line CL and line CE is set between 15° and 27°. This ensures that the inner contour 300 of the sound-producing portion 210 can be adequately positioned within the cavum concha E12 without contacting or compressing the helix E17, thereby effectively improving the wearing comfort and sound transmission quality of the earphone 200. For example, in some embodiments, the length of the line CL is set to 15 mm, and the angle R2 between the line CL and the line CE is set to 21°.

[0074] Optionally, in some embodiments, at least a portion of the section between reference points E and L is recessed toward the interior of the sound-emitting portion 210, and the arc-to-chord ratio of this section is between 1.02 and 1.12, optionally 1.04, 1.07, 1.1, or 1.11. The sound-emitting portion 210 is provided with a pressure relief hole 330 located within this section. In the above description, the inner contour 300 of the recessed section between reference points E and L, which faces the interior of the sound-emitting portion 210, should be a continuous arc that is recessed toward the interior of the sound-emitting portion 210.

[0075] Specifically, the section between reference points E and L where the pressure relief hole 330 is located includes two parts: one is the section between reference points E and reference point P1, and the other is the section between reference points P1 and reference point L. The section between reference points E and P1 is recessed toward the interior of the sound-emitting portion 210, while the section between reference points P1 and L protrudes away from the interior of the sound-emitting portion 210. The pressure relief hole 330 is located in the recessed section between reference points E and L, that is, in the section between reference points E and P1. Positioning the pressure relief hole 330 in the section between reference points E and P1 effectively conceals the pressure relief hole 330 between the earphone 200 and the ear when the earphone 200 is worn, thereby effectively improving the aesthetics of the earphone 200. In some embodiments, the section of the inner contour 300 where the pressure relief hole 330 is provided may be a line connecting the end points Q5 and Q6 of the outer contour of the pressure relief hole 330 .

[0076] Furthermore, the arc-chord ratio of the section between reference point E and reference point L where the pressure relief hole 330 is provided is set in the range of 1.02 to 1.12 (for example, in some embodiments, the arc-chord ratio of the section is set to 1.061), so that the section between reference point E and reference point P1 is a concave arc that is recessed toward the inside of the sound-emitting part 210. Based on this, the pressure relief hole 330 can be effectively prevented from being blocked by the ear or the sound-emitting part 210 itself, thereby effectively improving the pressure relief effect of the pressure relief hole 330, and further effectively improving the sound quality of the earphone 200.

[0077] Optionally, in some embodiments, the arc-chord ratio between two points on both sides of the reference point E and 3 mm away from the reference point E is between 1.26 and 1.44.

[0078] Specifically, there are two points on both sides of the reference point E and 3 mm away from the reference point E, namely reference point P1 and reference point P2, wherein the portion of the inner contour 300 between reference point P1 and reference point P2 is an arc concave toward the interior of the sound-emitting part 210, and the arc-chord ratio of the inner contour 300 between reference point P1 and reference point P2 is between 1.26 and 1.44 or 1.29 and 1.40. Based on this, the inner contour 300 between the two points on both sides of the reference point E and 3 mm away from the reference point E presents a concave arc concave toward the interior of the sound-emitting part 210, while effectively ensuring the depth of the section between reference point E and reference point P1 concave toward the interior of the sound-emitting part 210, so as to effectively prevent the pressure relief hole 330 set in the section between reference point E and reference point P1 from being blocked by the ear or the sound-emitting part 210 itself.

[0079] For example, in some embodiments, the arc-chord ratio between two points on both sides of the reference point E and 3 mm away from the reference point E is set to 1.352. Based on this, the inner contour 300 between the two points on both sides of the reference point E and 3 mm away from the reference point E presents a concave arc toward the inside of the sound-emitting part 210, while effectively ensuring the depth of the section between the reference point E and the reference point P1 that is recessed toward the inside of the sound-emitting part 210, so as to effectively prevent the pressure relief hole 330 set in the section between the reference point E and the reference point P1 from being blocked by the ear or the sound-emitting part 210 itself.

[0080] Optionally, further referring to Figures 5-7, in some embodiments, a shortest line is defined between the outer wall of the sound-emitting portion 210 and the outer wall of the abutting portion 220. The midpoint of the shortest line serves as reference point O. A line CO is formed between reference point C and reference point O, and line CO is located between line CL and line CH. The length of line CO is between 15 and 20 mm, and can be selected from 15.3, 15.8, 16.1, 16.5, 17, 17.7, 18.3, 18.6, 19.2, or 19.5. The angle R3 between line CO and line CL is between 9° and 19°, and can be selected from 12°, 15°, 17°, or 18°. Optionally, in some embodiments, the length of line CO can also be set within a range of values ​​between 15 and 20 mm, such as 15 and 19.6 mm.

[0081] Specifically, as described above, the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220 do not contact each other, so there is a shortest line between the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220, and the length of the shortest line is not zero. In this case, the reference point O is the midpoint of the shortest line Q1Q2. For details, please refer to the above description, which will not be repeated here. In some embodiments, the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220 are in contact with each other, so the length of the shortest line between the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220 is approximately zero. In this case, the reference point O should be the midpoint of the arc Q3Q4 formed by the abutting area between the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220. For details, please refer to the above description, which will not be repeated here.

[0082] The length of the connection line CO is set within the range of 15-20 mm or 15-19.6 mm, and the angle R3 between the connection line CO and the connection line CL is set within the range of 9°-19°. This effectively ensures that the sound-emitting portion 210 and the abutting portion 220 can fully clamp the helix E17 under the action of the ear hook 230, thereby effectively improving the fixation between the earphone 200 and the ear. For example, in some embodiments, the length of the connection line CO is set to 17.35 mm, and the angle R3 between the connection line CO and the connection line CL is set to 14°.

[0083] Optionally, further referring to FIG. 5 , in some embodiments, the angle R4 between line CO and line CE ranges from 15° to 27°, and may be 17°, 19°, 22°, 24°, or 26°. This can better ensure that the inner contour 300 of the earphone 200 bypasses the helix E17 as much as possible, reducing contact between the inner contour 300 of the earphone 200 and the helix E17. It can also improve the compatibility of the inner contour 300 with the physiological structure of the helix E17 and the cavum concha E12, thereby reducing the overall volume of the earphone 200 and effectively improving the wearing comfort and stability of the earphone 200. For example, in some embodiments, the angle R4 between line CO and line CE can be set to 21°.

[0084] Optionally, further referring to FIG. 7 , in some embodiments, the angle R4 between the line CO and the line CH is between 25° and 50°. This can better ensure that the inner contour 300 of the earphone 200 can bypass the helix E17 as much as possible, reducing contact between the inner contour 300 of the earphone 200 and the helix E17 while also improving the compatibility of the inner contour 300 with the physiological structure of the helix E17 and the cavum concha E12, thereby reducing the overall volume of the earphone 200 and effectively improving the wearing comfort and stability of the earphone 200. For example, in some embodiments, the angle R4 between the line CO and the line CH can be set to 43°.

[0085] Optionally, further referring to FIG. 7 , in some embodiments, line CL is further positioned between line CE and line CO, wherein the angle R3 between line CL and line CO is between 9° and 19°, and may be 11°, 13°, 16°, or 18°. This allows the inner contour 300 to be adequately positioned within the cavum concha E12 without contacting or squeezing the helix E17, thereby effectively improving the wearing comfort and sound transmission quality of the earphone 200. For example, in some embodiments, angle R3 between line CL and line CO may be set to 14°.

[0086] Optionally, referring to FIG8 , in some embodiments, the sound-emitting portion 210 has a reference point J, and a line CJ is formed between reference point C and reference point J. Line CJ is arranged tangent to the sound-emitting portion 210 and is located between line CO and line CH. The length of line CJ is between 16 and 23 mm, and can be selected as 17, 17.6, 18, 20, or 22 mm. The angle R6 between line CJ and line CL is between 11° and 21°, and can be selected as 13°, 15°, 17°, 18.4°, or 19°. Optionally, in some embodiments, the length of line CJ can be set within a range of values ​​within the range of 16 to 23 mm, such as 17 to 23 mm.

[0087] Specifically, in some embodiments, reference point J is also referred to as the sixth reference point, and line CJ is also referred to as the fifth line. Line CJ is tangent to the sound-emitting portion 210, and reference point C is a reference point corresponding to the edge 1071 of the helix E17. Therefore, along the direction from the helix E17 to the cavum concha E12, reference point J is the point farthest from reference point C while still allowing the sound-emitting portion 210 to contact the cavum concha E12. By setting the length of line CJ within a range of 16 to 23 mm or 17 to 23 mm, and by setting the angle R6 between line CJ and line CL within a range of 11° to 21°, the contact area between the sound-emitting portion 210 and the cavum concha E12 can be effectively increased, thereby effectively alleviating the pain of pressure on the ear when the earphone 200 is worn, and thereby effectively improving the wearing comfort of the earphone 200. For example, in some embodiments, the length of the line CJ may be set to 19.7 mm or 20.2 mm, and the angle R6 between the line CJ and the line CL may be set to 16°.

[0088] Optionally, further referring to FIG8 , in some implementations, the angle R7 between line CJ and line CO ranges from 11° to 21°, and may be 13°, 17°, 18.5°, or 20°. This effectively increases the contact area between the sound-emitting portion 210 and the cavum concha E12, thereby effectively reducing the pain of ear pressure when wearing the earphone 200 and thereby effectively improving the wearing comfort of the earphone 200. For example, in some embodiments, the angle R7 between line CJ and line CO can be set to 16°.

[0089] Optionally, referring to FIG9 , in some embodiments, the sound-emitting portion 210 has a reference point K that is farthest from the reference point C. A line CK is formed between reference point C and reference point K. Line CK is located between line CE and line CO. The length of line CK is between 24 and 30 mm, and can be selected as 25, 25.6, 26.1, 27, 28.1, or 29 mm. The angle R8 between line CK and line CE is between 13° and 25°, and can be selected as 14°, 16°, 17.8°, 20.7°, 22°, 24°, or 24.7°. Optionally, in some embodiments, the length of line CK can be set within a range of values ​​within the range of 24 to 30 mm, such as 25 to 30 mm.

[0090] Specifically, the reference point K is the point on the sound-emitting part 210 that is farthest from the reference point C. In some embodiments, the reference point K is also called the seventh reference point, and the connecting line CK is also called the sixth connecting line.

[0091] When the earphone 200 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 200. Therefore, the length of line CK is set to between 24 and 30 mm or 25 and 30 mm, and the angle R8 between line CK and line CE is set to between 13° and 25°. Based on this, when the sound-emitting portion 210 extends into the cavum concha E12, the area of ​​the sound-emitting portion 210 near reference point K maintains a relatively moderate distance from the ear canal, thereby effectively preventing the sound-emitting portion 210 from blocking the ear canal and effectively improving the sound transmission of the earphone 200. For example, in some embodiments, the length of line CK can be set to 27.7 mm, and the angle R8 between line CK and line CE can be set to 20°.

[0092] Optionally, further referring to Figure 9 , in some embodiments, the angle R9 between line CK and line CO is between 10° and 20°, and may be 13°, 15°, 17°, or 18°. This configuration ensures that when the sound-emitting portion 210 extends into the cavum concha E12, the area of ​​the sound-emitting portion 210 near reference point K maintains a relatively moderate distance from the ear canal. This effectively prevents the sound-emitting portion 210 from blocking the ear canal while effectively improving the sound transmission quality of the earphone 200. For example, in some embodiments, the angle R9 between line CK and line CO can be set to 15°.

[0093] Optionally, in some implementations, the arc-chord ratio of the outer wall surface of the sound-emitting portion 210 between the reference point L and the reference point K and toward the abutment portion 220 is between 1.4 and 1.7, and can be optionally 1.5, 1.6, or 1.65. Based on this setting, the sound-emitting portion 210 toward the abutment portion 220 is more spherical. Among them, the outer wall surface of the sound-emitting portion 210 between the reference point L and the reference point K and toward the abutment portion 220 is a continuous arc-shaped surface convex toward the abutment portion. Optionally, in some embodiments, the arc-chord ratio of the outer wall surface of the sound-emitting portion 210 can also be set in a value range of 1.5 to 1.67, etc., which is within the range of 1.4 to 1.7. For example, in some embodiments, the arc-chord ratio of the outer wall surface of the sound-emitting portion 210 between the reference point L and the reference point K and toward the abutment portion 220 can be set to 1.64.

[0094] Optionally, referring to FIG. 10 , the sound-producing portion 210 has a reference point G near the tragus E19 . A line CG is formed between reference points C and G. Line CG is located between lines CE and CO. An angle R10 between line CG and line CO ranges from 20° to 25°, and may be 21°, 23°, 24°, or 24.5°. Furthermore, the length of line CG ranges from 23 mm to 31 mm, and may be 25, 27, 28, or 30 mm.

[0095] Specifically, further referring to Figures 3, 4, and 10, reference point G is the reference point of the sound-emitting portion 210. In some embodiments, reference point G is also referred to as the eighth reference point, and line CG is also referred to as the seventh line. When the earphone 200 is worn, reference point G is positioned near the tragus E19. Therefore, if reference point G is too close to the tragus E19, or contacts the tragus E19, the sound-emitting portion 210 may block the ear canal to a certain extent, thereby affecting the user experience. Therefore, the length of line CG is set within a range of 23 to 30 mm, and the angle R10 between line CG and line CO is set within a range of 12° to 20°. Based on this, when the sound-emitting portion 210 extends into the cavum concha E12, the area of ​​the sound-emitting portion 210 near reference point G maintains a moderate distance from the tragus E19, effectively preventing the sound-emitting portion 210 from blocking the ear canal. For example, in some embodiments, the angle R10 between the CG line and the line CO can be set to 18°, the length of the CG line can be set to 27.12 mm, and the angle R10 between the CG line and the line CO can be set to 23°.

[0096] Optionally, in some embodiments, the shortest connecting line Q1Q2 between the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220 has an extension line Z4 extending away from the abutting portion 220 or toward the abutting portion 220, and the intersection of the extension line Z4 and the outer wall surface of the sound-emitting portion 210 away from the abutting portion 220 is the reference point G.

[0097] Optionally, further referring to Figures 3, 4, and 10, in some embodiments, the abutment portion 220 has a reference point D farthest from the reference point C, with a line CD formed between reference point C and reference point D. Line CD is located between line CE and line CH, and the length of line CD is between 16 and 25 mm, and can be 18, 17, 19.5, 21, 23, or 24 mm. An angle R11 between line CD and line CH is between 15° and 26°, and can be 16°, 18°, 21°, 23°, or 24°. Optionally, in some embodiments, the length of line CD can be between 16 and 24 mm, or within a range of 16 to 25 mm.

[0098] Specifically, further referring to Figures 3, 4, and 10, reference point D is the reference point on the abutment portion 220 that is farthest from reference point C. When the earphone 200 is in the worn state, reference point D is the reference point of the abutment portion 220 that is closest to the skull portion 400 on the back side of the helix E17. To effectively improve the wearing comfort of the earphone 200, the abutment portion 220 should be prevented from abutting the skull portion 400 on the back side of the helix E17 as much as possible. Therefore, the length of the connecting line CD is set within the range of 16 to 24 mm or 16 to 25 mm, and the angle R11 between the connecting line CD and the connecting line CH is set within the range of 15° to 26°. Based on this, the portion of the abutment portion 220 near reference point D can be effectively prevented from contacting or abutting the skull portion 400 on the back side of the helix E17, thereby effectively improving the wearing comfort of the earphone 200. For example, in some embodiments, the length of the connecting line CD is set to 20.65 mm, and the angle R11 between the connecting line CD and the connecting line CH is set to 22° or 19°.

[0099] Furthermore, the length of the connection line CD is set within the range of 16 to 24 mm or 16 to 25 mm, and the angle R11 between the connection line CD and the connection line CH is set within the range of 15° to 26°. Based on this, the applicability of the earphone 200 can be effectively improved.

[0100] For example, in the embodiment of the wearing state of the earphone 200 shown in FIG3 , when a person with large ears wears the earphone 200, there is a minimum distance h1 between the abutting portion 220 and the skull portion 400, where the minimum distance h1 is the straight-line distance from the reference point D to the skull portion 400. In the embodiment of the wearing state of the earphone 200 shown in FIG4 , when a person with small ears wears the earphone 200, there is a minimum distance h2 between the abutting portion 220 and the skull portion 400, where the minimum distance h2 is the straight-line distance from the reference point D to the skull portion 400. Due to the difference in ear size, the minimum spacing h2 is smaller than the minimum spacing h1. Therefore, the length of the connection line CD is set within the range of 16 to 24 mm or 16 to 25 mm, and the angle R11 between the connection line CD and the connection line CH is set within the range of 15° to 26°. This ensures that even when the earphone 200 is used by people with small ears, there is a sufficiently large minimum spacing h2 between the abutting portion 220 and the user's skull area 400, thereby effectively improving the applicability of the earphone 200.

[0101] Optionally, further referring to Figures 3, 4, and 10, in some embodiments, line CD is further located between line CO and line CH, and the angle R12 between line CD and line CO is between 15° and 25°, and may be 16°, 18°, 19°, 22°, or 24°. This effectively prevents the portion of the abutment portion 220 near reference point D from contacting or abutting the skull portion 400 on the back side of the helix E17, thereby effectively improving the wearing comfort of the earphone 200. For example, in some embodiments, angle R12 between line CD and line CO can be set to 20°.

[0102] Optionally, referring to Figures 11-13, in some embodiments, as described above, the earphone 200 includes a sound-emitting portion 210, an abutting portion 220, and an ear hook 230. The ear hook 230 connects the sound-emitting portion 210 and the abutting portion 220. When worn, the sound-emitting portion 210 and the abutting portion 220 form a clamping state on both sides of the user's helix E17, and the sound-emitting portion 210 is located within the cavum concha E12. Furthermore, in some embodiments, the ear hook 230 includes an elastic metal member. Within a reference cross-section bb provided along the length of the ear hook 230 and in a natural state, the elastic metal member includes an elastic segment 233. The elastic segment 233 is further divided into a first elastic sub-segment 231 and a second elastic sub-segment 232, each of which is arranged in an arc shape and connected to each other. The first elastic sub-segment 231 connects to the sound-emitting portion 210, and the second elastic sub-segment 232 connects to the abutting portion 220. In which, in the direction away from the connection point A between the first sub-elastic segment 231 and the second sub-elastic segment 232, the curvature radius of at least a portion of the first sub-elastic segment 231 starting from the connection point A and the curvature radius of at least a portion of the second sub-elastic segment 232 starting from the connection point A gradually increase, the length of the first sub-elastic segment 231 is greater than the length of the second sub-elastic segment 232, and at the first end point B of the first sub-elastic segment 231 away from the connection point A, the first sub-elastic segment 231 has a first curvature radius, and at the second end point F of the second sub-elastic segment 232 away from the connection point A, the second sub-elastic segment 232 has a second curvature radius, and the first curvature radius is greater than the second curvature radius.

[0103] Specifically, the reference point C parameterized above is located along the normal direction Z1, where the normal direction Z1 is the direction collinear with the normal of the earhook 230 at the connection point A. The first elastic sub-segment 231 is located between the reference point C and the reference point E, and the second elastic sub-segment 232 is located between the reference point C and the reference point H. Therefore, when the earphone 200 is worn, the connection point A is located at a position corresponding to the edge 1071 of the helix E17. Connection point A is the point of sudden change in the radius of curvature of the elastic segment 233, at which the elastic segment 233 is divided into the first elastic sub-segment 231 and the second elastic sub-segment 232. The aforementioned arrangement of the first and second elastic sub-segments 231, 232 allows the elastic segment 233 to better match the physiological structure of the helix E17 and the cavum concha E12, thereby effectively enhancing the grip of the elastic segment 233 and, in turn, the wearing stability of the earphone 200. In addition, the first endpoint B is the endpoint where the first sub-elastic segment 231 is connected to the sound-emitting portion 210, and the second endpoint F is the endpoint where the second sub-elastic segment 232 is connected to the abutting portion 220. Since there is a mutation point in the contour at the connection between the helix E17 and the concha E12, a first curvature radius is set at the first endpoint B and a second curvature radius is set at the second endpoint F, so that the elastic segment 233 is more matched with the physiological structure of the helix E17 and the concha E12, thereby effectively improving the clamping effect of the elastic segment 233, and further effectively improving the wearing stability of the earphone 200.

[0104] Optionally, referring to Figures 11-13, in some embodiments, the curvature radius of the first sub-elastic segment 231 gradually increases in the direction away from the connection point A and between the connection point A and the first endpoint B, and the curvature radius of the second sub-elastic segment 232 gradually increases in the direction away from the connection point A and between the connection point A and the second endpoint F. Based on this, the elastic segment 233 is more compatible with the physiological structure of the helix E17 and the concha E12, while also effectively reducing the structural complexity of the elastic segment 233, thereby effectively improving the processing efficiency of the elastic segment 233.

[0105] Optionally, in some embodiments, a line AB is formed between connection point A and first endpoint B. The length of line AB is between 10 and 18 mm, for example, 10 mm, 12 mm, 14 mm, 16 mm, or 18 mm. The first elastic sub-segment 231 is located outside line AB. A line AF is formed between connection point A and second endpoint F. The length of line AF is between 2 and 9 mm, for example, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, or 8 mm. The second elastic sub-segment 232 is located outside line AF.

[0106] Specifically, in some embodiments, line AB is also referred to as the first line formed between connection point A and first endpoint B, and line AF is also referred to as the second line formed between the connection segment and second endpoint F. If lines AB and AF are too short, the first and second elastic sub-segments 231 and 232 will have greater rigidity, making it difficult for the elastic segment 233 to elastically deform and generate a clamping force. If lines AB and AF are too long, the first and second elastic sub-segments 231 and 232 will have less rigidity, resulting in a weaker clamping force for the elastic segment 233, which is detrimental to the clamping and securing of the earphone 200. Therefore, the length of line AB is set between 10 and 18 mm, and the length of line AF is set between 2 and 9 mm. This ensures that the lengths of the first and second elastic sub-segments 231 and 232 are within a relatively moderate range, making it easier for the elastic segment 233 to generate a clamping force while effectively increasing the clamping force, thereby effectively improving the clamping effect of the elastic segment 233 and enhancing the wearing stability of the earphone 200. For example, in some embodiments, the length of line AB is set to 14.94 mm, and the length of line AF is set to 6.16 mm.

[0107] Optionally, in some embodiments, the arc-chord ratio of the first elastic sub-segment 231 is between 1.01 and 1.1, for example, it can be 1.01, 1.02, 1.03, 1.04, 1.05, or 1.08. The arc-chord ratio of the second elastic sub-segment 232 is between 1.01 and 1.12, specifically, it can be 1.01, 1.02, 1.03, 1.04, 1.05, 1.065, 1.07, or 1.2. Based on this, the clamping effect of the elastic segment 233 can be further improved, thereby effectively improving the wearing stability of the earphone 200. The contour shape of the first elastic sub-segment 231 within the reference section bb is a continuous arc convex away from the connecting line AB, and the contour shape of the second elastic sub-segment 232 within the reference section bb is a continuous arc convex away from the connecting line AF. For example, in some embodiments, the arc-chord ratio of the first elastic sub-segment 231 is set to 1.08, and the arc-chord ratio of the second elastic sub-segment 232 is set to 1.05.

[0108] Optionally, in some embodiments, at connection point A, the ear hook 230 has a third radius of curvature, and the third radius of curvature is between 4 and 7 mm, for example, 4.3, 5.1, 6, 6.4 mm, etc. The difference between the first and third radii of curvature is between 10 and 25 mm, for example, 12, 15, 17, 19, 20, 23 mm, etc. The difference between the second and third radii of curvature is between 1 and 5 mm, for example, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm. Based on this, the clamping effect of the elastic section 233 can be further improved, thereby further improving the wearing stability of the earphone 200. For example, in some embodiments, the third radius of curvature is set to 4.88 mm, the difference between the first and third radii of curvature is 13 mm, and the difference between the second and third radii of curvature is set to 3.95 mm.

[0109] Optionally, further referring to FIG. 12 , in some embodiments, at the first endpoint B, the first elastic sub-segment 231 has a first tangential direction Z2, and at the second endpoint F, the second elastic sub-segment 232 has a second tangential direction Z3. The angle R13 between the first tangential direction Z2 and the second tangential direction Z3 is between 43° and 100°, and may be 45°, 50°, 55°, 63°, 67°, 80°, 90°, 100°, etc. Based on this, the overall structure of the elastic segment 233 is more compatible with the physiological structure of the helix E17 and the cavum concha E12, thereby further improving the wearing comfort of the earphone 200 while further enhancing the clamping effect of the elastic segment 233 and further improving the wearing stability of the earphone 200. For example, in some embodiments, the angle R13 between the first tangential direction Z2 and the second tangential direction Z3 is set to 53°. Of course, the first tangent direction Z2 may also be tangent to the outer contour of the earhook 230 on the reference section bb. Specifically, the first tangent direction Z2 is tangent to the outer contour at a point on the outer contour of the earhook 230 corresponding to the first endpoint B (e.g., the intersection of the normal to the first endpoint B and the outer contour). Similarly, the second tangent direction Z3 may also be tangent to the outer contour of the earhook 230 on the reference section bb. Specifically, the second tangent direction Z3 is tangent to the outer contour at a point on the outer contour of the earhook 230 corresponding to the first endpoint F (e.g., the intersection of the normal to the second endpoint F and the outer contour).

[0110] Optionally, further referring to FIG. 12 , in some embodiments, the ear hook 230 has a normal direction Z1, and an angle R14 between the first tangent direction Z2 and the normal direction Z1 ranges from 15° to 41°, and may be 17°, 19°, 23°, 25°, 29°, 32°, 36°, 38°, or 41°, etc. An angle R15 between the second tangent direction Z3 and the normal direction Z1 ranges from 24° to 80°, and may be 26°, 29°, 31°, 33°, 40°, 50°, 60°, 70°, or 80°. This allows the overall structure of the elastic segment 233 to better match the physiological structure of the helix E17 and the cavum concha E12, thereby further improving the wearing comfort of the earphone 200 while also enhancing the clamping effect of the elastic segment 233 and further enhancing the wearing stability of the earphone 200. For example, in some embodiments, the angle R14 between the first tangent direction Z2 and the normal direction Z1 is set to 27°, and the angle R15 between the second tangent direction Z3 and the normal direction Z1 is set to 30°.

[0111] Optionally, further referring to FIG. 11 , in some embodiments, a shortest line is defined between the outer wall of the sound-emitting portion 210 and the outer wall of the abutting portion 220. The angle R16 formed between the line AO ​​between the midpoint of the shortest line (i.e., reference point O) and the connection point A and the normal direction Z1 is between 0° and 10°, and may be 0° to 8°, for example, 2°, 4°, 5°, or 7°. This allows the overall structure of the elastic segment 233 to better match the physiological structure of the helix E17 and the cavum concha E12, thereby further improving the wearing comfort of the earphone 200 and the clamping effect of the elastic segment 233, thereby further improving the wearing stability of the earphone 200. For example, in some embodiments, the angle R16 can be set to 1.08°.

[0112] As shown in Figure 6, in some embodiments, the outer wall surface of the sound-emitting portion 210 and the outer wall surface of the abutting portion 220 are in sound-producing abutment, and the arc formed by the abutting area in the reference section has a midpoint (that is, the reference point O). The angle R16 between the line AO ​​between the midpoint O and the connection point A and the normal direction Z1 is between 0° and 10°, and can be optionally 0 to 8°, for example, it can be 2°, 4°, 5° or 7°, etc. Based on this, the overall structure of the elastic segment 233 is more matched with the physiological structure of the helix E17 and the concha cavity E12, thereby further improving the wearing comfort of the earphone 200 while further improving the clamping effect of the elastic segment 233, so as to further improve the wearing stability of the earphone 200.

[0113] Optionally, further referring to FIG. 13 , in some embodiments, the ear hook 230 includes a bistable structure 246 disposed on the elastic section 233. The bistable structure 246 is configured to enable the ear hook 230 to have a first stable position and a second stable position. The minimum distance between the sound-emitting portion 210 and the abutting portion 220 when the ear hook 230 is in the first stable position is greater than the minimum distance when the ear hook 230 is in the second stable position.

[0114] Specifically, the bi-stable structure 246 is provided on the elastic section 233 to enable the elastic section 233 to maintain a fixed shape in the first and second stable positions. This allows the sound-emitting portion 210 and the abutting portion 220 to maintain a corresponding minimum spacing when the ear hook 230 is in the corresponding stable position, thereby effectively improving the wearing convenience of the earphone 200. For example, when a user needs to wear the earphone 200, the user can pre-adjust the ear hook 230 to the first stable position, thereby maintaining a sufficiently large spacing between the sound-emitting portion 210 and the abutting portion 220. When the earphone 200 is worn on the ear, the bi-stable structure 246 cancels its fixed shape function, allowing the ear hook 230 to resume its normal clamping function. For another example, when the user no longer needs to wear the earphone 200, the ear hook 230 automatically or manually adjusts to a stable position where the sound-emitting portion 210 and the abutting portion 220 have a minimum distance between them but do not directly contact each other, i.e., the second stable position. This effectively prevents the sound-emitting portion 210 and the abutting portion 220 from violently colliding due to the elasticity of the ear hook 230 after the user removes the earphone 200 from the ear, thereby effectively extending the service life of the earphone 200. Specifically, by setting the spacing between the storage positions in the battery compartment, the earphone 200 is in the first stable position when in the battery compartment, or the earphone 200 can be pressed against the battery compartment cover to maintain the first stable position when the battery compartment cover is closed. In this way, the user only needs to put the earphone on the ear helix and then press the earphone to maintain the second stable position. This is a single step operation, which improves the convenience of use.

[0115] Optionally, further referring to FIG. 13 , in some embodiments, the bistable structure 246 includes a raised portion 245 and abutting portion 244 spaced apart from each other on the elastic segment 233. The abutting portion 244 abuts against a raised point on the raised portion 245, forming a first stable position and a second stable position when the abutting portion 244 abuts against both sides of the raised point. The "both sides of the raised point" refers to both sides of the raised point along the normal direction Z1. Optionally, the bistable structure 246 can be positioned at a location on the elastic segment 233 corresponding to a reference point C, with the abutting portion 244 and the raised portion 245 positioned on both sides of the location corresponding to the reference point C along the extension direction of the elastic segment 233. This allows the bistable structure 246 to be located near the helix of the ear hook 230, facilitating user operation. Furthermore, this location is the primary deformation zone of the elastic segment 233 and is relatively centered, making it less susceptible to stress concentration and fatigue.

[0116] Optionally, in some embodiments, in a natural state, the sound-emitting portion 210 and the abutting portion 220 abut against each other under the action of the ear hook 230. In some embodiments, in a natural state, after the action of the ear hook 230, the sound-emitting portion 210 and the abutting portion 220 may also be configured to not abut against each other. For details, please refer to the above content and will not be repeated here.

[0117] Optionally, in some embodiments, the reference section bb is a symmetric plane of the ear hook 230 .

[0118] Optionally, in some embodiments, the elastic metal piece is an elastic metal wire, and the symmetry plane of the ear hook 230 is the plane where the central axis of the elastic metal wire is located.

[0119] Optionally, in some embodiments, the elastic metal part is an elastic metal sheet 233a, and the two ends of the elastic metal sheet 233a are arranged opposite to each other along the length direction and are respectively connected to the sound-emitting part 210 and the abutment part 220, and in the wearing state, the thickness direction of the elastic metal sheet 233a is toward or away from the helix E17, and the symmetry plane of the ear hook 230 divides the elastic metal sheet 233a along the width direction of the elastic metal sheet 233a. Based on this, the elastic deformation trend of the elastic metal sheet 233a is more in line with the physiological structure of the helix E17 and the concha cavity E12, thereby effectively improving the wearing stability and wearing comfort of the earphone 200.

[0120] Optionally, in some embodiments, between the first endpoint B and the second endpoint F, the width-to-thickness ratio of the elastic metal sheet 233a is between 8 and 12, and may be 9, 10, or 11. Setting the width-to-thickness ratio of the elastic metal sheet 233a between 8 and 20 can effectively improve the elasticity of the elastic metal sheet 233a, thereby effectively enhancing the elasticity of the ear hook 230 and further improving the wearing stability and comfort of the earphone 200. For example, the width-to-thickness ratio of the elastic metal sheet 233a can be 8, 10, 12, 14, 17, 19, or 20.

[0121] For example, in some embodiments, the width of the elastic metal sheet 233 a is set to 2 mm, and the thickness of the elastic metal sheet 233 a is set to 0.2 mm.

[0122] Optionally, in some embodiments, the earphone 200 further includes a flexible printed circuit board (FPC), wherein the flexible printed circuit board is arranged along the length direction of the elastic metal part and is provided on the elastic metal part, thereby effectively reducing the difficulty of wiring on the earphone 200. For example, the elastic metal part is an elastic metal sheet 233a, and the FPC can be extended and provided roughly in contact with the upper surface or lower surface of the elastic metal sheet. As shown in FIG14 , the elastic metal part can be an elastic metal sheet 233a, and plug blocks 2332 can be provided at both ends of the elastic metal sheet 233a. The plug blocks 2332 at both ends can be plugged and connected to the sound-emitting part 210 and the abutting part 220, respectively. The elastic metal sheet 233a is provided with a notch 2330 near the plug block 2332, which extends along the width direction to the side edge of the elastic metal sheet 233a. The notch 2330 facilitates sealing, resulting in a better injection molding effect.

[0123] 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.

[0124] [Added by reference (Rule 20.6) 26.12.2024] An embodiment of the present application provides an earphone, which includes a sound-emitting portion, an abutting portion and an ear hook, wherein the ear hook connects the sound-emitting portion and the abutting portion, and when worn, the sound-emitting portion and the abutting portion form a clamping state on both sides of the user's auricle, and the sound-emitting portion is located in the concha cavity, and the ear hook includes an elastic metal part, and within a reference cross-section set along the length direction of the ear hook and in a natural state, the elastic metal part includes an elastic segment, and the elastic segment is further divided into a first sub-elastic segment and a second sub-elastic segment, which are respectively arranged in an arc shape and connected to each other, the first sub-elastic segment is connected to the sound-emitting portion, and the second sub-elastic segment is connected to the sound-emitting portion. The sub-elastic segments are connected to the abutment portion; wherein, in the direction away from the connection point between the first sub-elastic segment and the second sub-elastic segment, the curvature radius of at least a portion of the first sub-elastic segment starting from the connection point and the curvature radius of at least a portion of the second sub-elastic segment starting from the connection point gradually increase, the length of the first sub-elastic segment is greater than the length of the second sub-elastic segment, and at the first end point of the first sub-elastic segment away from the connection point, the first sub-elastic segment has a first curvature radius, and at the second end point of the second sub-elastic segment away from the connection point, the second sub-elastic segment has a second curvature radius, and the first curvature radius is greater than the second curvature radius.

[0125] [Added by reference (Rule 20.6) 26.12.2024] In some embodiments, a first line is formed between the connection point and the first endpoint, the length of the first line is between 12 and 18 mm, and the first sub-elastic segment is located outside the first line; a second line is formed between the connection point and the second endpoint, the length of the second line is between 4 and 9 mm, and the second sub-elastic segment is located outside the second line.

[0126] [Added by reference (Rule 20.6) 26.12.2024] In some embodiments, the arc-chord ratio of the first elastic sub-segment is between 1.03 and 1.1, and the arc-chord ratio of the second elastic sub-segment is between 1.04 and 1.12.

[0127] [Added by reference (Rule 20.6) 26.12.2024] In some embodiments, at the connection point, the ear hook has a third radius of curvature, the third radius of curvature is between 4-7 mm, the difference between the first radius of curvature and the third radius of curvature is between 10-25 mm, and the difference between the second radius of curvature and the third radius of curvature is between 1.5-5 mm.

[0128] [Added by reference (Rule 20.6) 26.12.2024] In some embodiments, the radius of curvature of the first elastic sub-segment gradually increases in the direction away from the connection point and between the connection point and the first endpoint, and the radius of curvature of the second elastic sub-segment gradually increases in the direction away from the connection point and between the connection point and the second endpoint.

[0129] [Adopted by reference (Rule 20.6) 26.12.2024] In some embodiments, at the first endpoint, the first elastic sub-segment has a first tangential direction, and at the second endpoint, the second elastic sub-segment has a second tangential direction, and the angle between the first tangential direction and the second tangential direction is between 43° and 68°.

[0130] [Adopted by reference (Rule 20.6) 26.12.2024] In some embodiments, at the connection point, the ear hook has a normal direction, the angle between the first tangential direction and the normal direction is between 15° and 33°, and the angle between the second tangential direction and the normal direction is between 24° and 35°.

[0131] [Added by reference (Rule 20.6) 26.12.2024] In some embodiments, there is a shortest line between the outer wall surface of the sound-emitting portion and the outer wall surface of the abutting portion, and the angle between the line between the midpoint of the shortest line and the connection point and the normal direction is between 0° and 8°.

[0132] [Added by reference (Rule 20.6) 26.12.2024] In some embodiments, the ear hook includes a bistable structure, which is arranged in the elastic section, and the bistable structure is used to enable the ear hook to have a first stable position and a second stable position; the minimum spacing between the generating portion and the abutting portion when the ear hook is in the first stable position is greater than the minimum spacing when the ear hook is in the second stable position.

[0133] [Added by reference (Rule 20.6) 26.12.2024] In some embodiments, the bistable structure includes a protrusion and a rest portion connected to the elastic segment at intervals, the rest portion resting on a protruding point of the protrusion, and when the rest portion rests on both sides of the protruding point respectively, a first stable position and a second stable position are formed.

[0134] [Added by reference (Rule 20.6) 26.12.2024] In some embodiments, in a natural state, the sound-emitting portion and the abutting portion abut against each other under the action of the ear hook.

[0135] [Incorporated by reference (Rule 20.6) 26.12.2024] In some embodiments, the reference cross section is the earhook symmetry plane of the earhook.

[0136] [Added by reference (Rule 20.6) 26.12.2024] In some embodiments, the elastic metal member is an elastic metal wire, and the ear hook symmetry plane is the plane where the central axis of the elastic metal wire is located.

[0137] [Added by reference (Rule 20.6) 26.12.2024] In some embodiments, the elastic metal part is an elastic metal sheet, and the two ends of the elastic metal sheet are arranged in opposite directions along the length direction, respectively connecting the sound-emitting part and the abutting part, and when worn, the thickness direction of the elastic metal sheet is toward or away from the helix, and the ear hook symmetry plane divides the elastic metal sheet in the middle along the width direction of the elastic metal sheet.

[0138] [Added by reference (Rule 20.6) 26.12.2024] In some embodiments, between the first endpoint and the second endpoint, the width-to-thickness ratio of the elastic metal sheet is between 8 and 12.

Claims

1. A headset, characterized in that: The earphone comprises a sound-emitting part, an abutting part and an ear hook, the ear hook connects the sound-emitting part and the abutting part, the sound-emitting part is used to convert an electrical signal into an acoustic signal and play the sound signal, a battery is arranged in the abutting part, in a wearing state, the sound-emitting part and the abutting part form a clamping state at both sides of the user's auricle, and the sound-emitting part is located in the concha cavity, the ear hook comprises an elastic metal piece, in a reference cross section arranged along the length direction of the ear hook and in a natural state, the elastic metal piece comprises an elastic segment, the elastic segment is further divided into a first sub-elastic segment and a second sub-elastic segment respectively arranged in an arc shape and connected to each other, the first sub-elastic segment is connected to the sound-emitting part, and the second sub-elastic segment is connected to the abutting part; Wherein, in the direction away from the connection point between the first sub-elastic segment and the second sub-elastic segment, the curvature radius of at least a portion of the first sub-elastic segment starting from the connection point and the curvature radius of at least a portion of the second sub-elastic segment starting from the connection point gradually increase, the length of the first sub-elastic segment is greater than the length of the second sub-elastic segment, and at the first end point of the first sub-elastic segment away from the connection point, the first sub-elastic segment has a first curvature radius, and at the second end point of the second sub-elastic segment away from the connection point, the second sub-elastic segment has a second curvature radius, and the first curvature radius is greater than the second curvature radius.

2. The earphone according to claim 1, characterized in that A first connecting line is formed between the connection point and the first end point, the length of the first connecting line is between 10 and 18 mm, and the first sub-elastic segment is located outside the first connecting line. A second connecting line is formed between the connection point and the second end point, the length of the second connecting line is between 2 and 9 mm, and the second sub-elastic segment is located outside the second connecting line.

3. The earphone according to claim 2, characterized in that The arc-to-chord ratio of the first elastic sub-segment is between 1.01 and 1.1, and the arc-to-chord ratio of the second elastic sub-segment is between 1.01 and 1.

12.

4. The earphone according to claim 3, characterized in that: At the connection point, the ear hook has a third curvature radius, the third curvature radius is between 4-7 mm, the difference between the first curvature radius and the third curvature radius is between 10-25 mm, and the difference between the second curvature radius and the third curvature radius is between 1-5 mm.

5. The earphone according to claim 1, characterized in that In the direction away from the connection point and between the connection point and the first end point, the radius of curvature of the first sub-elastic segment gradually increases, and in the direction away from the connection point and between the connection point and the second end point, the radius of curvature of the second sub-elastic segment gradually increases.

6. The earphone according to claim 1, characterized in that At the first end point, the first sub-elastic segment has a first tangent direction, and at the second end point, the second sub-elastic segment has a second tangent direction, and an angle between the first tangent direction and the second tangent direction is between 43° and 100°.

7. The earphone according to claim 6, characterized in that At the connection point, the ear hook has a normal direction, an angle between the first tangent direction and the normal direction is between 15° and 41°, and an angle between the second tangent direction and the normal direction is between 24° and 80°.

8. The earphone according to claim 7, characterized in that: The outer wall surface of the sound-emitting part abuts against the outer wall surface of the abutting part, and the arc formed by the abutting area in the reference section has a midpoint, and the angle between the line between the midpoint and the connecting point and the normal direction is between 0-8°.

9. The earphone according to claim 1, characterized in that The ear hook includes a bistable structure, which is arranged on the elastic section, and is used to enable the ear hook to have a first stable position and a second stable position; the minimum distance between the generating part and the abutting part when the ear hook is in the first stable position is greater than the minimum distance when the ear hook is in the second stable position.

10. The earphone according to claim 9, characterized in that The bistable structure includes a protrusion and a supporting portion connected to the elastic section at intervals, the supporting portion supporting a protrusion point of the protrusion, and the first stable position and the second stable position are formed when the supporting portion and the two sides of the protrusion point are respectively abutted.

11. The earphone according to claim 1, characterized in that In a natural state, the sound-emitting portion and the abutting portion abut against each other under the action of the ear hook.

12. The earphone according to claim 1, characterized in that The reference cross section is the ear hook symmetry plane of the ear hook.

13. The earphone according to claim 12, characterized in that The elastic metal piece is an elastic metal wire, and the ear hook symmetry plane is the plane where the central axis of the elastic metal wire is located.

14. The earphone according to claim 12, characterized in that The elastic metal piece is an elastic metal sheet, and two ends of the elastic metal sheet that are arranged opposite to each other along the length direction are respectively connected to the sound-emitting part and the abutting part. In the worn state, the thickness direction of the elastic metal sheet is toward or away from the helix, and the ear hook symmetry plane divides the elastic metal sheet in the middle along the width direction of the elastic metal sheet.

15. The earphone according to claim 14, characterized in that Between the first end point and the second end point, the width-to-thickness ratio of the elastic metal sheet is between 8 and 20.

Images