Ear clamping type earphone and wearing method

Abstract

The invention discloses an ear clamping type earphone and a wearing method, the ear clamping type earphone comprises a first convex part, a second convex part and a connecting arm, the first convex part is provided with a first contact surface in contact with the front surface of the auricle of a human body, and the second convex part is provided with a second contact surface in contact with the back surface of the auricle of the human body; when the earphone is clamped in the auricle of the human body, the direction of pressure acting on the front side of the auricle by the first contact surface is inclined to the deformation direction of the connecting arm, and the direction of pressure acting on the back side of the auricle by the second contact surface is inclined to the deformation direction of the connecting arm, so that torque opposite to the direction is generated on the earphone. During wearing, the first convex part is located in the auricle conchae cavity on the front face of the auricle, the second convex part is located on the back face of the auricle, and the connecting arm abuts against the helix; the ear clamping type earphone is stably worn on the auricle through three-position contact. According to the invention, an asymmetric and three-dimensional space torsion design is adopted, so that the whole earphone and the auricle form three contact areas, stable wearing is formed, a user can obtain stable hearing feeling, and the user experience is improved.

Description

Technical field:

[0001] The present invention relates to the technical field of earphone products, and in particular to an ear-clip earphone and a wearing method thereof. Background technology:

[0002] The ear-clip earphone is different from the existing earphone wearing method. It uses the earphone itself to form an elastic clamping space to clamp the earphone on the edge of the human auricle and uses the shape characteristics of the auricle itself to hang the earphone on the auricle.

[0003] The earliest patent for clip-on earphones can be found in Japanese patent document: Tokukai 2003-264882; subsequently, different patent applicants have continuously improved the clip-on earphones and proposed many improved technical solutions. For example, the utility model patent of Chinese patent number 201921260407.2 discloses a clip-on TWS earphone; the utility model patent of Chinese patent number 202221089652.3 discloses a clip-on wireless earphone. It can be seen from the research on existing clip-on earphones that, combined with Figure 1 As shown, current clip-on earphones usually include: two ends 51, 52 that are usually spherical or have arc-shaped curved surfaces, and a connecting arm 53 for connecting the two ends 51, 52. The connecting arm 53 is usually made of a material with elastic deformation to achieve the ear-clip mode. Specifically, current clip-on earphones all use C-shaped, U-shaped or other curved connecting arms. The ends 51, 52 at both ends of the elastic connecting arm 53 are relatively large in size. The sound-generating unit and the circuit unit are respectively arranged in the ends 51, 52, and the two ends 51, 52 are elastically opened and closed by the connecting arm 53, so as to be easily clamped in the human auricle.

[0004] In the current clip-on earphones, regardless of the size difference between the two ends 51, 52, a symmetrical design is generally adopted, that is, the two ends 51, 52 and the axis of the connecting arm 53 are roughly in the same plane, the clamping force of the two ends 51, 52 on the auricle 4 is in the same straight line, and is in the same plane as the elastic deformation direction of the connecting arm. In this way, when the current clip-on earphones are worn, without considering other forces, the auricle is subjected to the internal and external clamping forces generated by the two ends 51, 52, and the earphones are mainly hung at the edge of the auricle by the internal and external clamping forces. Considering the wearing comfort, the clamping force of the two ends 51, 52 on the auricle is not large, so the clip-on earphones are basically in an unstable state during wearing. Even if the user's head moves slightly, the earphones will shake, causing the position of the clamping earphones to change.

[0005] On the other hand, since clip-on earphones are usually open-type earphones, their sound outlet is not relatively fixed at the ear canal opening like in-ear earphones. If the earphones shake, the direction of the sound outlet will also change, causing the sound heard by the user to change from near to far, from loud to soft, affecting the user's auditory experience.

[0006] In view of the shortcomings of current clip-on earphones, the inventors propose the following technical solutions. Summary of the invention:

[0007] The first technical problem to be solved by the present invention is to change the overall structural design of the clip-on earphones in the prior art and provide a clip-on earphone that can be stably worn. Compared with the prior art, the clip-on earphones in the present invention adopt an asymmetric design and have a three-dimensional twisted shape.

[0008] In order to solve the first technical problem mentioned above, the present invention adopts the following technical solution: an earphone with a clip, comprising: a first protrusion with a built-in sound element, a second protrusion with a built-in battery element and a connecting arm, the first protrusion and the second protrusion are located at both ends of the connecting arm, the sound unit and the battery unit are electrically connected through a wire passing through the inside of the connecting arm, the connecting arm changes the distance between the first protrusion and the second protrusion by deformation, so that the earphone can be clamped on the human auricle, the first protrusion has a first contact surface that contacts the front of the human auricle, and the second protrusion has a second contact surface that contacts the back of the human auricle; when the earphone is clamped on the human auricle: the direction of the pressure F1 applied by the first contact surface to the front of the auricle is inclined to the deformation direction of the connecting arm, the direction of the pressure F1 applied by the second contact surface to the back of the auricle is inclined to the deformation direction of the connecting arm, and F1 and F2 generate torques in opposite directions on the earphone.

[0009] Furthermore, in the above technical solution, the first contact surface is an inwardly convex arc surface, and is inclined toward the rear side of the connecting arm in the convex direction; the second contact surface is an inwardly convex arc surface, and is inclined toward the front side of the connecting arm in the convex direction.

[0010] Furthermore, in the above technical solution, a coordinate system is established with reference to the equilibrium state of the clip-on earphone naturally hanging on a horizontal support rod, wherein the horizontal direction of the deformation of the connecting arm is the X-axis direction, the vertical direction passing through the center of gravity G of the earphone is the Y-axis direction, and the direction perpendicular to the XY plane is the Z-axis direction. The clip-on earphone meets the following conditions: Condition 1: In the XZ plane coordinate system, the angle between the direction of the protrusion of the first contact surface and the X-axis is: 5°~10°, and the angle between the direction of the protrusion of the second contact surface and the X-axis is: 5°~10°.

[0011] Furthermore, in the above technical solution, a coordinate system is established with reference to the equilibrium state of the clip-on earphone naturally hanging on the horizontal support rod, wherein the horizontal direction of the connecting arm deformation is the X-axis direction, the vertical direction passing through the center of gravity G of the earphone is the Y-axis direction, and the direction perpendicular to the XY plane is the Z-axis direction. The clip-on earphone meets the following conditions: Condition 2: In the XY plane coordinate system, the angle between the direction of the protrusion of the first contact surface and the X-axis is: 10°~25°, and the angle between the direction of the protrusion of the second contact surface and the X-axis is: 3°~20°.

[0012] Furthermore, in the above technical solution, a coordinate system is established with reference to the equilibrium state of the clip-on earphone naturally hanging on the horizontal support rod, wherein the horizontal direction in the deformation of the connecting arm is the X-axis direction, the direction of the vertical line passing through the center of gravity G of the earphone is the Y-axis direction, and the direction perpendicular to the XY plane is the Z-axis direction. The clip-on earphone meets the following conditions: Condition 3: In the ZY plane coordinate system, the vertical line passing through the center of gravity of the first convex part and the second convex part does not coincide with the Y-axis, and is respectively located on the left and right sides of the Y-axis.

[0013] Furthermore, in the above technical solution, at least the lower area of ​​the first protrusion is symmetrical in front and back, and the angle between the symmetry plane and the Y-axis is 8°~20°; at least the lower area of ​​the second protrusion is symmetrical in front and back, and the angle between the symmetry plane and the Y-axis is 5°~15°.

[0014] Furthermore, in the above technical solution, the connecting arm is shaped to bend toward the first protrusion and the second protrusion, and includes: a first connecting section connected to the first protrusion, a second connecting section connected to the second protrusion, and an intermediate section located in the middle, wherein the axis lines of the first connecting section, the second connecting section and the intermediate section are not in the same plane, that is, the axis line of the connecting arm is a twisted three-dimensional line.

[0015] Furthermore, in the above technical solution, the first protrusion includes a first inner shell and a first outer shell that are interlocked with each other, and the first contact surface is located on the first inner shell; the second protrusion includes a second inner shell and a second outer shell that are interlocked with each other, and the second contact surface is located on the second inner shell; the first inner shell and the second inner shell are made of flexible plastic material, or plastic coated with flexible material.

[0016] Furthermore, in the above technical solution, a sound outlet hole is arranged in the lower area of ​​the first outer shell body, and a tuning hole is arranged in the upper area of ​​the first inner shell body.

[0017] The second technical problem to be solved by the present invention is to provide a method for wearing an earphone with a clip-on earphone, and the technical solution adopted is as follows: the first convex portion and the second convex portion of the earphone are located at two ends of a connecting arm, the first convex portion has a first contact surface that contacts the front of a human auricle, and the second convex portion has a second contact surface that contacts the back of a human auricle; when the earphone is worn, the earphone with a clip-on earphone is clamped on the human auricle through the elastic deformation of the connecting arm itself, and the first contact surface and the second contact surface form a three-dimensional torsion relative to the deformation direction of the connecting arm, wherein the first convex portion of the built-in speaker is located in the concha cavity on the front of the auricle, and the first contact surface is pressed against the surface area A of the concha cavity; the second convex portion of the built-in battery assembly is located on the back of the auricle, and the second contact surface is pressed against the area B below the corresponding raised area of ​​the concha cavity; the connecting arm is pressed against the area C on the helix; the earphone with a clip-on earphone is worn on the auricle through the three contacts of A, B, and C.

[0018] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0019] The first convex part and the second convex part of the ear-clip earphone of the present invention are twisted relative to the connecting arm, and the entire earphone adopts an asymmetric design to form a three-dimensional space twisting design, so that F1 and F2 of the first convex part and the second convex part acting on the front and back of the auricle will not be in the same plane as the elastic deformation direction of the connecting arm itself. When the earphone is worn, since F1 and F2 are not in the same plane as the elastic deformation direction of the connecting arm itself, a twist is formed relative to the auricle, so that the connecting arm rests on the helix, so that the entire earphone forms three contact areas with the auricle, thereby forming a stable wearing, so that it can be ensured that the sound outlet on the first convex part stably points to the direction of the ear canal, so that the user can obtain a stable hearing sense and improve the user experience. Description of the drawings:

[0020] Figure 1 It is a schematic diagram of the structure of an existing clip-on earphone when worn;

[0021] Figure 2 is a stereogram of the present invention;

[0022] Figure 3 is a cross-sectional view from another perspective of the present invention;

[0023] Figure 4 It is a schematic diagram of the present invention under the action of a balanced state on a support rod;

[0024] Figure 5 yes Figure 4 A top view of

[0025] Figure 6 yes Figure 4 Left view of;

[0026] Figure 7is an exploded perspective view of an embodiment of the present invention;

[0027] Figure 8-Figure 10 It is a schematic diagram of wearing and bagging the present invention. Specific implementation method:

[0028] The present invention is further described below in conjunction with specific embodiments and drawings.

[0029] See Figures 2 to 6 As shown, the present invention is an ear-clip type earphone, which comprises: a first convex part 1, a second convex part 2 and a connecting arm 3 connecting the first convex part 1 and the second convex part 2.

[0030] The present invention is in the shape of a dumbbell in the shape of a U or C as a whole, that is, the first protrusion 1 and the second protrusion 2 have a larger lateral space relative to the connecting arm 3, so as to facilitate the internal installation of the corresponding sound unit and battery unit of the earphone. For example, in the present embodiment, the first protrusion 1 and the second protrusion 2 adopt a water drop design similar to a sphere. Of course, according to needs, the first protrusion 1 and the second protrusion 2 can adopt other shapes. The sound unit and the battery unit of the earphone are respectively arranged in the cavity in the first protrusion 1 and the second protrusion 2. The sound unit usually adopts a speaker or a bone conduction sound device, and the battery power supply is usually a lithium-ion battery pack. The Bluetooth communication unit, circuit board and other components of the adapter earphone are assembled in the first protrusion 1 and the second protrusion 2 as needed. For the convenience of explanation, the following embodiment adopts the method of installing the sound unit in the first protrusion 1 and the battery unit in the second protrusion 2.

[0031] The first convex part 1 and the second convex part 2 are located at both ends of the connecting arm 3, and the sound unit and the battery unit are electrically connected through a wire passing through the inside of the connecting arm 3. The first convex part 1, the second convex part 2 and the connecting arm 3 can be arranged in an integral molding or fixed connection manner.

[0032] The connecting arm 3 is an elastic connecting arm, which can usually be elastically deformed by plastic material. Of course, an elastic metal strip can be added to the connecting arm 3 to enhance its elastic deformation ability. Similar to the existing clip-on earphones, the present invention also changes the distance between the first protrusion 1 and the second protrusion 2 by deforming the connecting arm 3, so that the earphone can be clamped at the auricle of the human body.

[0033] The first convex portion 1 has a first contact surface 10 that contacts the front of the human auricle, and the second convex portion 2 has a second contact surface 20 that contacts the back of the human auricle. In order to fit the auricle and improve comfort, the first contact surface 10 is an inwardly convex arc surface, and the second contact surface 20 is an inwardly convex arc surface.

[0034] Compared with the existing clip-on earphones, the present invention has a three-dimensional twisted shape. Figure 7As shown, the present invention is manifested in appearance as follows: the first contact surface 10 is inclined in the protruding direction of the connecting arm 3 at the rear side; the second contact surface 20 is inclined in the protruding direction of the connecting arm at the front side, and the first contact surface 10 and the second contact surface 20 form a three-dimensional torsion relative to the deformation direction of the connecting arm 3.

[0035] In order to specifically illustrate the three-dimensional space twisting modeling of the present invention, it will be described below in conjunction with a reference coordinate system.

[0036] Combination Figures 4 to 6 As shown, a coordinate system is established with reference to the equilibrium state of the clip-on earphone of the present invention naturally hanging on the horizontal support rod 6, wherein the horizontal direction of the deformation of the connecting arm 3 is the X-axis direction, the vertical line direction passing through the center of gravity G is the Y-axis direction, and the direction perpendicular to the XY plane is the Z-axis direction. The clip-on earphone meets the following conditions:

[0037] Condition 1: In the XZ plane coordinate system, the angle a between the protruding direction of the first contact surface 10 and the X axis is 5° to 10°, and the angle b between the protruding direction of the second contact surface 20 and the X axis is 5° to 10°. At this time, the protruding direction of the first contact surface 10 is inclined toward the rear side of the connecting arm 3; the protruding direction of the second contact surface 20 is inclined toward the front side of the connecting arm.

[0038] like Figure 7 As shown, when condition 1 is met, the direction of the pressure F1 applied by the first contact surface 10 to the front of the auricle is inclined with the deformation direction of the connecting arm, and the direction of the pressure F2 applied by the second contact surface 20 to the back of the auricle is inclined with the deformation direction of the connecting arm. Since the directions of F1 and F2 do not coincide with the axial direction of the connecting arm 3 (i.e., the elastic deformation direction of the connecting arm), F1 and F2 will generate torques in opposite directions on the earphone, that is, when the present invention is worn, the first protrusion 2 and the second protrusion 3 not only generate a clamping force on the auricle 4, but also a twisting torque in the opposite direction, thereby enabling the present invention to achieve a similar "leaning" on the auricle 4.

[0039] Combined with the internal shape of the auricle, the first contact surface 10 and the second contact surface 20 do not clamp the auricle horizontally upward, so in order to improve wearing comfort and stability, in actual production, the first convex portion 1 and the second convex portion 2 may also deflect in the Z-axis direction. Figure 4 As shown, the present invention also meets the following conditions:

[0040] Condition 2: In the XY plane coordinate system, the angle between the protruding direction of the first contact surface 10 and the X axis is 10° to 25°, and the angle between the protruding direction of the second contact surface 20 and the X axis is 3° to 20°. In this way, the first contact surface 10 and the second contact surface 20 can fit the surface of the auricle as closely as possible, improving wearing comfort and stability.

[0041] In addition, for the above condition 1, only the deflection of the first convex portion 1 and the second convex portion 2 in the Y / Z axis direction is considered. In actual production, the first convex portion 1 and the second convex portion 2 may also deflect in the X axis direction. Figure 6 As shown, the present invention also meets the following conditions:

[0042] Condition 3: In the ZY plane coordinate system, the vertical line passing through the center of gravity of the first convex part 1 and the second convex part 2 does not coincide with the Y axis, and is located on the left and right sides of the Y axis respectively. This condition is set because the first convex part 1 and the second convex part 3 are generally designed to be stacked front and back. Even considering the torsion connection with the connecting arm 3, the lower area of ​​the first convex part 1 and the second convex part 2 is generally designed to be symmetrical. In view of this situation, the angle between the symmetry plane of the first convex part 1 and the Y axis is 8° to 20°; the angle between the symmetry plane of the second convex part 2 and the Y axis is 5° to 15°.

[0043] The angles in conditions 1 to 3 above are obtained by the inventor through continuous testing. If the deflection angle is too large, it will affect the wearing experience; if the deflection angle is too small, no obvious effect will be produced.

[0044] The above description only considers the deflection of the first convex portion 1 and the second convex portion 3, but in actual production, you can also perform a torsion design on the connecting arm 3. Figures 2 to 5 As shown. The connecting arm 3 is generally in a C-shaped shape bent toward the first convex portion 1 and the second convex portion 2, and includes: a first connecting segment 31 connected to the first convex portion 1, a second connecting segment 32 connected to the second convex portion 2, and an intermediate segment 33 located in the middle, wherein the axis lines of the first connecting segment 31, the second connecting segment 32 and the intermediate segment 33 are not in the same plane, that is, the axis line of the connecting arm 3 is a twisted three-dimensional line. In this way, the twisting of the first convex portion 1 and the second convex portion 2 can also be achieved.

[0045] See Figure 8 As shown, this is an embodiment of the present invention, wherein the first convex portion 1 includes a first inner shell 11 and a first outer shell 12 that are interlocked, and the first contact surface 10 is located on the first inner shell 11; the second convex portion 2 includes a second inner shell 21 and a second outer shell 22 that are interlocked, and the second contact surface 20 is located on the second inner shell 21. The first inner shell 11 and the second inner shell 12 are made of flexible plastic material, or plastic coated with flexible material. In this way, the first contact surface 10 and the second contact surface 20 are relatively soft, and are more comfortable when in contact with the auricle.

[0046] In addition, a sound outlet 13 is disposed in the lower area of ​​the first outer shell 12, a tuning hole 14 is disposed in the upper area of ​​the first inner shell 11, and a mesh plate 15 is disposed at the tuning hole 14. A charging electrode 23 is disposed below the second outer shell 22.

[0047] See Figures 9 to 11 As shown, when the clip-on earphone of the present invention is worn, the clip-on earphone is clamped on the auricle 4 of the human body through the elastic deformation of the connecting arm 3 itself, wherein the first protrusion 1 of the built-in speaker is located in the concha cavity 41 on the front of the auricle 4, and the first contact surface 10 is pressed against the surface area A of the concha cavity 41; the second protrusion 2 of the built-in battery assembly is located on the back of the auricle 4, and the second contact surface 20 is pressed against the lower area B corresponding to the raised area of ​​the concha cavity; the connecting arm 3 is pressed against the area C on the helix 42. In this way, the clip-on earphone of the present invention is stably worn on the auricle through the three contacts of A, B, and C.

[0048] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. An ear-clip headphone, comprising: A first protrusion (1) with a built-in sound element, a second protrusion (2) with a built-in battery element, and a connecting arm (3), wherein the first protrusion (1) and the second protrusion (2) are located at two ends of the connecting arm (3), the sound unit and the battery unit are electrically connected via a wire passing through the inside of the connecting arm (3), and the connecting arm (3) changes the distance between the first protrusion (1) and the second protrusion (2) by deformation, so that the earphone can be clamped on the auricle of a human body, characterized in that: The first convex portion (1) has a first contact surface (10) that contacts the front side of a human auricle, and the second convex portion (2) has a second contact surface (20) that contacts the back side of a human auricle; When the earphone is clamped on the human auricle: The direction of the pressure F1 exerted by the first contact surface (10) on the front side of the auricle is inclined with respect to the deformation direction of the connecting arm, and the direction of the pressure F2 exerted by the second contact surface (20) on the back side of the auricle is inclined with respect to the deformation direction of the connecting arm, and F1 and F2 generate torques in opposite directions on the earphone.

2. The ear-clip headphone according to claim 1, characterized in that: The first contact surface (10) is an inwardly convex arc surface, and the convex direction is inclined toward the rear side of the connecting arm; the second contact surface (20) is an inwardly convex arc surface, and the convex direction is inclined toward the front side of the connecting arm.

3. The ear-clip headphone according to claim 2, characterized in that: A coordinate system is established with reference to the equilibrium state of the clip-on earphone naturally hanging on the horizontal support rod (6), wherein the horizontal direction of the deformation of the connecting arm (3) is the X-axis direction, the vertical direction through the center of gravity G of the earphone is the Y-axis direction, and the direction perpendicular to the XY plane is the Z-axis direction. The clip-on earphone meets the following conditions: Condition 1: In the XZ plane coordinate system, the angle between the protruding direction of the first contact surface (10) and the X-axis is 5° to 10°, and the angle between the protruding direction of the second contact surface (20) and the X-axis is 5° to 10°.

4. The ear-clip headphone according to claim 2, characterized in that: A coordinate system is established with reference to the equilibrium state of the clip-on earphone naturally hanging on the horizontal support rod (6), wherein the horizontal direction of the deformation of the connecting arm (3) is the X-axis direction, the vertical direction through the center of gravity G of the earphone is the Y-axis direction, and the direction perpendicular to the XY plane is the Z-axis direction. The clip-on earphone meets the following conditions: Condition 2: In the XY plane coordinate system, the angle between the protruding direction of the first contact surface (10) and the X-axis is 10° to 25°, and the angle between the protruding direction of the second contact surface (20) and the X-axis is 3° to 20°.

5. The ear-clip headphone according to claim 2, characterized in that: A coordinate system is established with reference to the equilibrium state of the clip-on earphone naturally hanging on the horizontal support rod (6), wherein the horizontal direction of the deformation of the connecting arm (3) is the X-axis direction, the vertical direction through the center of gravity G of the earphone is the Y-axis direction, and the direction perpendicular to the XY plane is the Z-axis direction. The clip-on earphone meets the following conditions: Condition 3: In the ZY plane coordinate system, the perpendicular lines passing through the center of gravity of the first convex portion (1) and the second convex portion (2) do not coincide with the Y axis, and are located on the left and right sides of the Y axis respectively.

6. The ear-clip headphone according to claim 5, characterized in that: At least the lower area of ​​the first protrusion (1) is symmetrical in front and back, and the angle between the symmetry plane and the Y axis is 8° to 20°; at least the lower area of ​​the second protrusion (2) is symmetrical in front and back, and the angle between the symmetry plane and the Y axis is 5° to 15°.

7. The ear-clip headphone according to claim 1, characterized in that: The connecting arm (3) is shaped to bend toward the first convex portion (1) and the second convex portion (2), and comprises: a first connecting section (31) connected to the first convex portion (1), a second connecting section (32) connected to the second convex portion (2), and an intermediate section (33) located in the middle, wherein the axis lines of the first connecting section (31), the second connecting section (32) and the intermediate section (33) are not in the same plane, that is, the axis line of the connecting arm (3) is a twisted three-dimensional line.

8. The clip-on earphone according to any one of claims 1 to 7, characterized in that: The first protrusion (1) comprises a first inner shell (11) and a first outer shell (12) which are interlocked, and the first contact surface (10) is located on the first inner shell (11); The second protrusion (2) comprises a second inner shell (21) and a second outer shell (22) which are interlocked, and the second contact surface (20) is located on the second inner shell (21); The first inner shell (11) and the second inner shell (12) are made of flexible plastic material, or plastic coated with flexible material.

9. The ear-clip headphone according to claim 8, characterized in that: A sound outlet hole (13) is arranged in the lower area of ​​the first outer shell (12), and a tuning hole (14) is arranged in the upper area of ​​the first inner shell (11).

10. A method for wearing an ear-clip earphone, the ear-clip earphone comprising: A first convex portion (1), a second convex portion (2) and a connecting arm (3), wherein the first convex portion (1) and the second convex portion (2) are located at two ends of the connecting arm (3), the first convex portion (1) has a first contact surface (10) in contact with the front side of a human auricle, and the second convex portion (2) has a second contact surface (20) in contact with the back side of a human auricle; when worn, the connecting arm (3) itself deforms elastically to clamp the earphone on the human auricle (4), characterized in that the first contact surface (10) and the second contact surface (20) form a three-dimensional torsion relative to the deformation direction of the connecting arm (3), wherein: The first convex portion (1) of the built-in speaker is located in the concha cavity (41) on the front side of the auricle (4), and the first contact surface (10) is pressed against the surface area A of the concha cavity (41); The second protrusion (2) of the built-in battery assembly is located on the back of the auricle (4), and the second contact surface (20) is pressed against the lower area B corresponding to the raised area of ​​the concha cavity; The connecting arm (3) abuts against the upper C area of ​​the helix (42); The clip-on earphone is worn on the auricle through the three contacts A, B and C.

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