Earphone and earphone system

Abstract

The application discloses an earphone and an earphone system. The earphone comprises a shell, a sound outlet part and an ear clip part. The sound outlet part is internally provided with a loudspeaker and a battery. The battery and the loudspeaker are electrically connected. The ear clip part comprises a connecting subpart and a hook-shaped subpart. The connecting subpart is connected between the sound outlet part and the hook-shaped subpart. In the case that a user wears the earphone, the sound outlet part is configured to be at least partially located in the concha cavity of the user. The ear clip part extends to the auricle and the head part through the anthelix. The hook-shaped subpart extends away from the sound outlet part and then bends and extends towards the sound outlet part, so that the shell forms a wearing space for accommodating the auricle of the human body.

Description

[0001] This application claims priority to Chinese Patent Application No. 202423306307.2, filed with the Chinese Patent Office on December 30, 2024, entitled "Headphones and Headphone System", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electronic device technology, and more specifically, to an earphone and an earphone system. Background Technology

[0003] A user's auricle, including the helix, antihelix, and concha, has an irregular shape and size that varies from person to person. In related technologies, headphones often struggle to adapt to the irregular shape of the auricle, resulting in unsatisfactory wearing conditions. This can lead to discomfort, looseness, slippage, and other issues, affecting the wearing experience and stability of the headphones, ultimately resulting in poor performance. Utility Model Content

[0004] To address at least one of the aforementioned technical problems, this application provides an earphone and an earphone system.

[0005] The earphones provided in this application include:

[0006] The housing includes a sound-emitting part and an ear clip. The sound-emitting part houses a speaker and a battery, which are electrically connected. The ear clip includes a connecting part and a hook-shaped part, with the connecting part connecting between the sound-emitting part and the hook-shaped part. When the user wears the headphones, the sound-emitting part is configured to be at least partially located within the user's concha. The ear clip extends through the antihelix and the helix to the space between the auricle and the head.

[0007] The hook-shaped part first extends away from the sound-emitting part and then bends and extends towards the sound-emitting part so that the shell forms a wearing space for accommodating the auricle of the human body.

[0008] This application also provides an earphone system. The earphone system includes the earphones and charging case described in any of the above embodiments. The charging case is used to charge the earphones.

[0009] In the earphone and earphone system of this application embodiment, the sound-producing part is housed in the concha cavity, which facilitates the fixation of the earphone to the concha cavity. The ear clip extends from the antihelix and the helix to the space between the auricle and the head, which can further fix the earphone and improve the wearing stability of the earphone.

[0010] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0011] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0012] Figure 1 This is a three-dimensional structural diagram of a headphone system according to certain embodiments of this application;

[0013] Figure 2 yes Figure 1 The diagram shows a three-dimensional structural representation of the headphones in the headphone system from one perspective.

[0014] Figure 3 yes Figure 1 The diagram shows a three-dimensional structural representation of the headphones in the headphone system from another perspective.

[0015] Figure 4 yes Figure 1 The diagram shows a three-dimensional structure of the earphones worn on the ear in the earphone system.

[0016] Figure 5A yes Figure 3 The diagram shows a partial cross-section of the earphone along its width.

[0017] Figure 5B yes Figure 3 The diagram shows a cross-sectional view of the earphone along its width midline.

[0018] Figure 6 yes Figure 3 The diagram shows the planar structure of the headphones.

[0019] Figure 7 yes Figure 3 The diagram shows the planar structure of the headphones.

[0020] Figure 8 yes Figure 3 The diagram shows a three-dimensional structure of the earphones worn on the ear.

[0021] Figure 9 yes Figure 3 The diagram shows the planar structure of the headphones.

[0022] Figure 10 yes Figure 3 The diagram shows the structure of the earphones worn on the ear;

[0023] Figure 11 yes Figure 3 The diagram shown is a projection of the headphones being worn on the ear.

[0024] Figure 12 yes Figure 3The diagram shown is a projection of the headphones being worn on the ear.

[0025] Figure 13 yes Figure 3 A schematic diagram of the headphone's planar structure from another perspective;

[0026] Figure 14 yes Figure 3 The diagram shows the structure of the earphones worn on the ear;

[0027] Figure 15 yes Figure 3 The diagram shows a planar structure of the headphones from another perspective.

[0028] Explanation of key component symbols:

[0029] Headphone system 1000; headphones 100, housing 10, wearing space 101, accommodating cavity 102, first side 103, second side 105, sound outlet 11, sound outlet surface 111, sound outlet hole 1111, back 113, ear clip 13, connecting part 131, hook-shaped part 133, first outer surface 1331, second outer surface 1332, third outer surface 1333, flexible part 135, deformable part 137, first connecting block 1371, second connecting block 1372, speaker 20, sound outlet surface 21, circuit board 30, communication unit 40, battery 50, charging terminal 60, charging case 300. Detailed Implementation

[0030] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0031] In the description of this application, it should be understood that the terms "thickness," "upper," "top," "bottom," "inner," "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly. In one example, they can be a fixed connection, a detachable connection, or an integral connection; they can be a mechanical connection, an electrical connection, or a connection that allows communication between them; they can be a direct connection or an indirect connection through an intermediate medium; they can be the internal connection of two elements or the interaction between two elements.

[0033] Please see Figures 1 to 3 The headphone system 1000 provided in this embodiment includes headphones 100 and a charging case 300. The charging case 300 is used to charge the headphones 100. Since the headphone system 1000 in this embodiment includes headphones 100, it is understood that the headphone system 1000 includes at least the same beneficial effects as headphones 100. Therefore, please refer to the beneficial effects of headphones 1000 described below for the beneficial effects of headphones 100.

[0034] Please combine Figure 4 The earphone 100 can be worn on the user's ear and can be used with mobile phones, computers, smart wearable devices (such as smartwatches, smart bracelets, smart glasses, and smart helmets), head-mounted displays, and virtual reality devices. It should be noted that the user's ear includes the auricle, external auditory canal, concha, helix, and antihelix. The auricle is the outer ear located on either side of the head. The upper part of the auricle is supported by elastic cartilage and covered with skin and a small amount of subcutaneous tissue. The lower part of the auricle includes the earlobe, which lacks cartilage and is mainly composed of connective tissue and fat. The auricle is a part used to collect sound waves, including the front of the auricle near the facial features and the back of the auricle opposite to the front. The external auditory canal is an organ structure inside the ear, serving as a passage connecting the outer and middle ear, transmitting external sound waves to the eardrum. The helix is ​​the outermost part of the ear's outer contour, also known as the edge of the auricle. It connects to the earlobe and is the curled part of the auricular cartilage, usually shaped like a question mark. It is located on the upper front of the auricle and extends towards the ear canal opening. The concha is a concave structure on the front of the auricle, the largest depression on its surface. The antihelix is ​​the Y-shaped raised portion opposite the helix, composed of the antihelix body, the superior crus of the antihelix, and the inferior crus of the antihelix.

[0035] In some embodiments, when the earphone 100 is placed in the charging case 300, the charging case 300 can deliver electrical energy to the earphone 100 to charge the earphone 100. The charging case 300 is provided with a power terminal (not shown), and the earphone 100 is provided with a charging terminal. The charging terminal is at least partially housed in the housing 10 of the earphone 100 and exposed from the housing 10. The charging terminal 60 is electrically connected to the circuit board 30 of the earphone 100. When the earphone 100 is placed in the charging case 300, the charging terminal 60 and the power terminal are electrically connected.

[0036] Please see Figures 2 to 5A The earphone 100 includes a housing 10. The housing 10 includes a sound-emitting part 11 and an ear clip part 13. A speaker 20 is disposed in the sound-emitting part 11. The sound-emitting part 11 includes a sound-emitting surface 111. The sound-emitting surface 111 is provided with a sound-emitting hole 1111, through which the sound emitted by the speaker 20 can pass through the sound-emitting part 11 and propagate to the outside of the sound-emitting part 11. The ear clip part 13 includes a connecting part 131 and a hook-shaped part 133. The connecting part 131 is connected between the sound-emitting part 11 and the hook-shaped part 133. When the user wears the earphone 100, the sound-emitting part 11 is configured to be at least partially located in the user's concha cavity, and the ear clip part 13 extends from the antihelix and the helix to the space between the auricle and the head.

[0037] Specifically, the housing 10 is a structure used to house other components besides the housing 10 itself, and to house these other components within the housing 10. The housing 10 of this application is used to mount other components of the earphone 100 (e.g., speaker 20), and to house these other components within the housing 10, thus protecting them. The housing 10 can be made of plastic and / or metal, etc. When the housing 10 is made of plastic, it has good insulation properties, low cost, and light weight. When the housing 10 is made of metal, it has high strength, good wear resistance, and a long service life. When the housing 10 is made of a composite material of plastic and metal, it combines the advantages of high strength and light weight.

[0038] It is understood that the housing 10 is not only used to house other components, but also, when the user wears the headphones 100, at least a portion of the housing 10 contacts the user's ear, thereby securing the headphones 100 to the user's ear. Therefore, the size, shape, and material parameters of the housing 10 directly affect the user's comfort when wearing the headphones 100 and the acoustic performance of the headphones 100.

[0039] The sound outlet 11 houses components such as the speaker 20. The speaker 20 is fixed within the sound outlet 11, which provides a stable position for the speaker 20, ensuring its operation is unaffected by external vibrations or movement. Sound can propagate from the sound outlet 11 to the outside. When the user wears the headphones 100, the sound outlet 11 is at least partially located within the user's concha, close to the external auditory canal. The concha is a natural acoustic cavity that provides initial focusing and guidance of sound. The sound emitted by the speaker 20 propagates from the sound outlet 11 to the concha and then into the external auditory canal. This short propagation path improves sound transmission efficiency and enhances sound clarity. Furthermore, the short propagation path reduces energy loss during propagation, allowing the speaker 20 to output sound at lower power, thus extending the headphone 100's battery life. The sound outlet 11 includes a sound-emitting surface 111 and a back surface 113 opposite to the sound-emitting surface 111 in the second direction A2. When the user wears the headphones 100, the sound-emitting surface 111 faces the concha cavity, allowing sound to enter the external auditory canal directly from the concha cavity. This reduces sound quality loss due to sound scattering and improves the acoustic effect. The shape of the sound-emitting hole 1111 can be, but is not limited to, a circle, ellipse, triangle, quadrilateral, or other polygons. There can be one or more sound-emitting holes 1111, which is not limited in this application.

[0040] The ear clip 13 is a component used to further secure the earphone 100 to the ear. The sound outlet 11 and the ear clip 13 are disposed opposite each other in a first direction A1. The ear clip 13 includes a connecting part 131 and a hook-shaped part 133. The connecting part 131 is connected between the sound outlet 11 and the hook-shaped part 133. In some embodiments, the connecting part 131 and the hook-shaped part 133 are an integral structure; in another embodiment, the connecting part 131 and the hook-shaped part 133 are two separate structures, which are subsequently combined into the ear clip 13 by a specific connection method. The "specific connection method" includes, but is not limited to, detachable connection methods, such as threaded connection, snap-fit, etc., and non-detachable connection methods, such as welding, gluing, etc. In some embodiments, the sound-emitting part 11 and the connecting part 131 may be an integral structure, that is, the sound-emitting part 11 and the connecting part 131 are a single unit. This improves the bonding strength between the sound-emitting part 11 and the connecting part 131, preventing separation of the sound-emitting part 11 and the connecting part 131 during the operation of the housing 10, thereby ensuring the stability and reliability of the housing 10. In other embodiments, the sound-emitting part 11 and the connecting part 131 are separate structures, that is, the sound-emitting part 11 and the connecting part 131 are two different structures. In one example, the sound-emitting part 11 and the connecting part 131 may be joined together by a detachable connection method, including but not limited to snap-fit ​​connections or threaded connections. In another example, the sound-emitting part 11 and the connecting part 131 may be joined together by a non-detachable connection method, including but not limited to bonding or welding.

[0041] The hook-shaped portion 133 is an extension of the ear clip portion 13, possessing a certain curvature. Its shape is curved or hook-like, extending from the antihelix and auricle of the user's ear to the space between the auricle and the head, thus supporting and securing the earphone 100. In this application, the auricle is defined based on the sagittal plane of the human body, including the opposing posterior and posterior sides, with the posterior side being closer to the facial features than the posterior side. The width direction is... Figure 2 or Figure 3 The third direction A3 shown has a width-bisector plane that passes through the midpoint of the width and is perpendicular to the width direction. The hook-shaped sub-part 133 has a width-bisector plane Pw.

[0042] In some embodiments, within the first projection plane Pw where the width dividing plane Pw is located, the common tangent of the projection of the sound-emitting surface 111 and the projection of the outer surface of the hook-shaped part 133 to the projection of the sound-emitting surface 111 and the projection of the outer surface of the hook-shaped part 133 are respectively the first tangent point Q1 and the second tangent point Q2. The projection of the housing 10 has an outer envelope, which includes a first segment. The first segment extends from the first tangent point Q1 along the first envelope direction R1. Figure 6Extending clockwise (as shown) to the second tangent point Q2, the first segment and the common tangent together form the first surface P1. Figure 6 (Shaded area). The area S1 of the first surface P1 is greater than or equal to 300 mm². 2 and less than or equal to 1000mm 2 .

[0043] The size of the first surface P1 represents the overall size of the earphone 100 and determines whether the earphone 100 can match the curve and shape of the ear. If the area of ​​the first surface P1 is too large or too small, it will affect the stability and comfort of the earphone 100 in connection with the ear, which may lead to unstable wearing or discomfort.

[0044] The area S1 of the first surface P1 can be 300 mm². 2 7400mm 2 480mm 2 500mm 2 550mm 2 600mm 2 7700mm 2 780mm 2 800mm 2 900mm 2 950mm 2 Or 1000mm 2 Preferably, the area S1 of the first surface P1 is 480 mm². 2 The area S1 of the first surface P1 is 400 mm². 2 ~950mm 2 Any value between mm; or, the area S1 of the first face P1 is 480 mm. 2 ~900mm 2 Any value between mm; or, the area S1 of the first face P1 is 500 mm. 2 ~800mm 2 Any value between mm; or, the area S1 of the first face P1 is 550 mm. 2 ~780mm 2 Any value between mm; or, the area S1 of the first face P1 is 600 mm. 2 ~700mm 2 Any value between mm.

[0045] The area S1 of the first surface P1 can characterize the size of the earphone 100. If the area S1 of the first surface P1 is less than 300 mm²... 2If the overall size of the earphone 100 is too small, the layout of components inside the housing 10 may be limited. For example, the placement of core components such as the speaker 20, heat dissipation module, and battery 50 may be restricted. A small area S1 on the first surface P1 may also result in insufficient internal space for the earphone 100, leading to a decrease in acoustic performance, such as insufficient low-frequency response and a limited sound field. Furthermore, insufficient internal space for the earphone 100 will restrict heat dissipation, causing heat accumulation and affecting the performance and lifespan of the components.

[0046] If the area S1 of the first face P1 is greater than 1000 mm 2 This not only makes the earphones 100 appear bulky and affects their aesthetics, but may also increase the burden of wearing them. An excessively large area S1 on the first surface P1 of the shell 10 may put greater pressure on the ears, especially during prolonged wear, potentially causing fatigue. Furthermore, the excessively large area S1 on the first surface P1 makes the earphones 100 more prone to bumping into surrounding objects during daily use, causing them to slip off and increasing the risk of them falling out or being damaged.

[0047] Therefore, in this embodiment, the area S1 of the first surface P1 is greater than or equal to 300 mm². 2 and less than or equal to 1000mm 2 This design ensures sufficient internal space within the housing 10, allowing for the rational arrangement of acoustic components and other parts, thus guaranteeing excellent acoustic performance of the headphones 100. Furthermore, the ample internal space of the housing 10 provides adequate heat dissipation, helping to maintain the stable operation of the internal components and enhancing the durability of the headphones 100. Simultaneously, the well-designed area S1 of the first surface P1 ensures a harmonious proportion to the headphones 100, avoiding designs that are either too large or too compact, thus improving aesthetics and enhancing ease of use for everyday activities.

[0048] Please see Figure 2 , Figure 3 and Figure 5A In some embodiments, the hook-shaped portion 133 extends first away from the sound-emitting portion 11 and then bends and extends towards the sound-emitting portion 11 so that the housing 10 forms a wearing space 101 for accommodating the auricle of a human body.

[0049] Specifically, the wearing space 101 is the area enclosed by the ear clip 13 and the sound outlet 11. Its size and shape are suitable for accommodating the auricle of the human body to ensure the stability and comfort of the headphones 100 when worn. The hook-shaped part 133 extends first away from the sound outlet 11, providing sufficient initial space to accommodate auricles of different sizes; then it bends and extends closer to the sound outlet 11 to help hook onto the auricle, improving the fixation performance of the headphones 100. The wearing space 101 can adapt to the natural curve of the auricle, thereby avoiding compression or slippage of the auricle and improving the comfort and stability when worn.

[0050] Please see Figure 2 , Figure 3 and Figure 5A In some embodiments, the earphone 100 includes a first side 103 and a second side 105 opposite to each other in the first direction A1. The sound output part 11 is located on the first side 103 of the earphone 100, and the ear clip part 13 is located on the second side 105 of the earphone 100. The sound output part 11 includes a sound output surface 111 and a back surface 113 opposite to each other in the second direction A2. The sound output surface 111 is provided with a sound output hole 1111, which is used to allow the sound emitted by the speaker 20 to pass through to the outside of the sound output part 11. The first direction A1 is perpendicular to the second direction A2.

[0051] Although the earphone 100 has an irregular shape, according to the common definition of length, width, and height (thickness), the first direction A1 in this application can be understood as the length direction of the earphone 100, the second direction A2 can be understood as the width direction of the earphone 100, and the third direction A3 below can be understood as the thickness direction of the earphone 100. When the user wears the earphone 100, the first direction A1 is approximately parallel to the sagittal plane of the human body, and the second direction A2 is approximately perpendicular to the sagittal plane of the human body. The back surface 113 is away from the concha cavity and is located on the side opposite to the sound-emitting surface 111 in the second direction A2. The back surface 113 can block the sound emitted by the speaker 20 from propagating in the opposite direction. Specifically, the back surface 113 can be a flat surface, a curved surface, or other geometric shapes to fit the overall shape of the earphone 100 and meet acoustic requirements. The material of the back surface 113 can be a material with good sound absorption properties, such as composite materials, plastics, or metal materials coated with sound-absorbing coatings, to further reduce the interference caused by sound propagation through the shell 10.

[0052] The projection of the ear clip 13 includes an inner contour and an outer contour. The outer contour has a protrusion BP, which is the point of the ear clip 13 furthest from the sound outlet 11 in the first direction A1. The inner contour has a concave point CP, which is located within the wearing space 101.

[0053] The inner contour of the projection of the ear clip 13 is the contour close to the sound outlet 11, and the outer contour of the projection of the ear clip 13 is the contour away from the sound outlet 11. The outer contour of the projection of the ear clip 13 is a convex surface protruding from the first side 103 to the second side 105, and the point of this convex surface farthest from the sound outlet 11 in the first direction A1 is the convex point BP. The inner contour of the ear clip 13 is a concave surface recessed from the first side 103 to the second side 105, and the point of this concave surface farthest from the sound outlet 11 in the first direction A1 is the concave point CP. The concave point CP is located inside the wearing space 101, and the convex point BP is located outside the wearing space 101.

[0054] Please see Figures 5A to 7 In some embodiments, the outer surfaces of the sound-emitting surface 111 and the hook-shaped sub-part 133 are both curved surfaces. Within the first projection plane Pw, the outer envelope includes a second segment connected to the first segment. The second segment extends from the first tangent point Q1 along the second envelope direction R2. Figure 7 Extending in the counterclockwise direction shown, to the second tangent point Q2, the first envelope direction R1 and the second envelope direction R2 are opposite, and the second segment and the common tangent together form the second surface P2. Figure 7 (Middle shaded area).

[0055] Specifically, when the user wears the headphones 100, the sound-emitting surface 111 faces the concha cavity and is at least partially housed within it, while the back surface 113 is away from the concha cavity. The fact that the sound-emitting surface 111 is at least partially located within the concha cavity ensures that the sound emitted by the speaker 20 can be effectively transmitted to the external auditory canal. The curved surface 111 reduces direct contact pressure on the concha cavity, avoiding friction or scratches that might occur from right angles or sharp edges, resulting in smoother contact between the sound-emitting part 111 and the concha cavity, thus improving wearing comfort. The outer surface of the hook-shaped part 133 is designed to be curved, helping it adapt to the curve of the auricle. The curved hook-shaped part 133 can smoothly bypass the helix and transition to the back surface 113 of the auricle, reducing the risk of bumping the helix and further improving wearing comfort.

[0056] When a user wears the earphone 100, the second surface P2 is the cross-sectional size of the space accommodating the auricle. The size of the second surface P2 directly affects the degree of contact between the earphone 100 and the ear during wear. If the area of ​​the second surface P2 is too large, the earphone 100 cannot be securely attached to the ear and is prone to sliding off or falling out; if the area of ​​the second surface P2 is too small, the earphone 100 may compress the auricle, causing discomfort.

[0057] Please continue reading. Figures 5A to 7 In some embodiments, the ratio of the area S2 of the second surface P2 to the area S1 of the first surface P1 is greater than or equal to 0.1 and less than or equal to 0.5 mm.

[0058] Specifically, the ratio of the area S2 of the second surface P2 to the area S1 of the first surface P1 can be 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.38, 0.4, 0.45, or 0.5. Preferably, the ratio of the area S2 of the second surface P2 to the area S1 of the first surface P1 is 0.2.

[0059] If the ratio of the area S2 of the second surface P2 to the area S1 of the first surface P1 is less than 0.1, then the area S2 of the second surface P2 is too small compared to the area S1 of the first surface P1. When the user wears the earphone 100, the second surface P2 cannot fully accommodate the auricle, which may cause pressure to concentrate in local areas such as the helix and antihelix, easily causing discomfort to the user. It may also reduce the stability of the earphone 100 when worn, increasing the risk of slipping off. If the ratio of the area S2 of the second surface P2 to the area S1 of the first surface P1 is greater than 0.5, then the area S2 of the second surface P2 is too large, and the earphone 100 cannot be securely attached to the ear, easily slipping off or falling out. Therefore, in this embodiment, the ratio of the area S2 of the second surface P2 to the area S1 of the first surface P1 is greater than or equal to 0.1 and less than or equal to 0.5. This ensures that the ratio of the area S2 of the second surface P2 to the area S1 of the first surface P1 is within a reasonable range. When the user wears the earphone 100, the area where the second surface P2 is located can fully accommodate the auricle. It can also disperse the pressure on the auricle through an appropriate contact area, reducing pressure on the auricle. Furthermore, it can control the overall size of the earphone 100, reducing the bulkiness of the earphone 100 and making the earphone 100 more compact, thus making it more convenient for the user to wear.

[0060] Please see Figures 2 to 7 This application provides an earphone 100, wherein the area S2 of the second surface P2 of the earphone 100 is greater than or equal to 60 mm². 2 and less than or equal to 150mm 2 .

[0061] Specifically, the area S2 of the second surface P2 can be 60mm². 2 70mm 2 75mm 2 80mm 2 90mm 2 98mm 2 100mm 2 110mm 2 120mm 2 130mm 2 140mm 2 Or 150mm 2 Preferably, the area S2 of the second surface P2 is 150 mm². 2 The area S2 of the second surface P2 is 70 mm². 2~140mm 2 Any value between; or, the area S2 of the second surface P2 is 75 mm. 2 ~130mm 2 Any value between; or, the area S2 of the second surface P2 is 80 mm. 2 ~120mm 2 Any value between; or, the area S2 of the second surface P2 is 90 mm. 2 ~110mm 2 Any value between; or, the area S2 of the second surface P2 is 98 mm. 2 ~100mm 2 Any value between.

[0062] It is understandable that the area S2 of the second surface P2 can characterize the size of the wearing space 101. The wearing space 101, where the second surface P2 is located, is the main area of ​​the earphone 100 that accommodates the user's auricle, and the peripheral structure of this area is in direct contact with the helix, antihelix, and other parts of the auricle. Therefore, if the area S2 of the second surface P2 is less than 60 mm², 2 If the size of the wearing space 101 is too small, the earphone 100 will not be able to fully accommodate the auricle when the user wears it, making it easy for the earphone 100 to slip or fall out, affecting the stability and reliability of the wearing experience. Furthermore, an excessively small wearing space 101 can cause the earphone 100 to exert excessive pressure on the auricle, affecting wearing comfort. When the area S2 of the second surface P2 is greater than 150mm²... 2 When the size of the wearing space 101 is too large and does not match the actual size of the human ear, the contact force between the earphone 100 and the ear is insufficient, resulting in it not being tight enough when worn and easily slipping or falling off, thus affecting the stability and comfort of wearing.

[0063] The area S2 of the second surface P2 is greater than or equal to 60 mm². 2 and less than or equal to 150mm 2 This helps ensure that the earphone 100 has enough wearing space 101 to accommodate the auricle, antihelix, and other parts of the ear when worn, making the earphone 100 more secure during wear and reducing the possibility of slipping or falling off. It also helps ensure that the earphone 100 has a moderate pressure distribution when worn, avoiding discomfort caused by local pressure and improving the stability and comfort of wearing.

[0064] Please see Figure 7 This application provides an earphone 100, wherein the length L1 of the earphone 100 in the first direction A1 is greater than or equal to 15mm and less than or equal to 30mm.

[0065] Wherein, the length L1 of the earphone 100 in the first direction A1 refers to the distance between the point on the first side 103 of the housing 10 furthest from the second side 105 and the point on the second side 105 furthest from the first side 103. Specifically, the length L1 of the earphone 100 in the first direction A1 can be 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 28mm, or 30mm, with a preferred value of 29mm. The length L1 is any value between 16mm and 29mm; or, the length L1 is any value between 17mm and 28mm; or, the length L1 is any value between 18mm and 23mm; or, the length L1 is any value between 19mm and 22mm; or, the length L1 is any value between 20mm and 21mm.

[0066] If the length L1 of the earphone 100 in the first direction A1 is less than 15mm, the earphone 100 is too short. This may result in the outer contour of the earphone 100 not being able to fully accommodate the distance between the concha and the helix, causing the contact area between the earphone 100 and the ear to be too small, which may cause discomfort or instability when wearing it. In addition, the earphone 100 being too short may also result in an excessively large gap between the earphone 100 and the external auditory canal, affecting the sound transmission effect and leading to a decrease in sound quality.

[0067] If the length L1 of the earphone 100 in the first direction A1 is greater than 30mm, then the earphone 100 is too long and may exceed the natural contour of the ear, causing the outer contour of the earphone 100 to protrude excessively. An excessively long earphone 100 may result in an excessive distance from the helix to the concha, increasing the likelihood of the earphone 100 coming into contact with external objects and making it more susceptible to minor bumps or knocks, thus affecting wearing stability and comfort. Furthermore, an excessively long earphone 100 may also increase its weight and size, causing uneven pressure during wear and placing additional burden on the ear; prolonged wear may lead to discomfort or fatigue.

[0068] Therefore, in this embodiment, the length L1 of the earphone 100 in the first direction A1 is greater than or equal to 15mm and less than or equal to 30mm, which can ensure that the distance between the earphone 100 and the helix and concha is moderate when wearing it, so as not to cause excessive pressure and to provide sufficient stability. This avoids the discomfort and unstable wearing caused by the earphone 100 being too short or too long, thereby improving the wearing comfort and sound quality.

[0069] Please see Figure 7 This application provides an earphone 100, wherein the height H of the earphone 100 in the second direction A2 is greater than or equal to 17mm and less than or equal to 28mm.

[0070] The height H of the earphone 100 in the second direction A2 refers to the distance between the point on the sound-emitting surface 111 of the housing 10 furthest from the back surface 113 and the point on the back surface 113 furthest from the sound-emitting surface 111. Specifically, the height H of the earphone 100 in the second direction A2 can be 17mm, 18mm, 19mm, 20mm, 20.4mm, 21mm, 22mm, 23mm, 23.4mm, 24mm, 25mm, or 28mm, with a preferred value of 19.5mm. The height H of the earphone 100 in the second direction A2 is any value between 18mm and 25mm; or, the height H of the earphone 100 in the second direction A2 is any value between 19mm and 24mm; or, the height H of the earphone 100 in the second direction A2 is any value between 20mm and 23.4mm; or, the height H of the earphone 100 in the second direction A2 is any value between 20.4mm and 23mm; or, the height H of the earphone 100 in the second direction A2 is any value between 21mm and 22mm.

[0071] If the height H of the earphone 100 in the second direction A2 is less than 17mm, the size of the earphone 100 in the second direction A2 may be smaller than the distance between the concha cavity and the helix on the coronal plane, making it difficult for the sound output part 11 to be partially inserted into the concha cavity.

[0072] If the height H of the earphone 100 in the second direction A2 is greater than 28mm, the size of the sound output part 11 of the earphone 100 in the second direction A2 is too large, which is likely to protrude from the ear contour, causing the outer contour of the earphone 100 to be inconsistent with the helix of the ear, affecting the stability of wearing. At the same time, the earphone 100 with an excessively large size of the sound output part 11 in the second direction A2 is also more likely to collide or bump with external objects. Especially during sports or daily activities, the earphone 100 is more susceptible to interference from external forces, which may cause the earphone 100 to loosen or fall off, further affecting the stability and safety of wearing.

[0073] The height H of the earphone 100 in the second direction A2 is greater than or equal to 17mm and less than or equal to 28mm, which ensures that the distance between the earphone 100 and the external ear canal is moderate. This ensures good sound propagation while maintaining wearing stability and comfort. It avoids the instability caused by an insufficient height H and the external impact caused by an excessive height H, thus improving the secure fit of the earphone 100.

[0074] Please see Figure 7 This application provides an earphone 100, wherein in a first direction A1, the first distance D1 between the protrusion BP and the sound output part 11 is greater than or equal to 13mm and less than or equal to 16mm.

[0075] Specifically, the value of the first distance D1 can be 13mm, 13.2mm, 13.7mm, 14.3mm, 14.4mm, 14.5mm, 14.8mm, 15.1mm, 15.4mm, 15.7mm, 15.8mm, or 16mm, preferably 14.7mm. The first distance D1 can be any value between 13.2mm and 15.8mm; or, the first distance D1 can be any value between 13.7mm and 15.7mm; or, the first distance D1 can be any value between 14.3mm and 15.4mm; or, the first distance D1 can be any value between 14.4mm and 15.1mm; or, the first distance D1 can be any value between 14.8mm.

[0076] If the first distance D1 is less than 13mm, the distance between the protrusion BP and the sound output part 11 is too close, and the outer contour of the ear clip 13 is too close to the sound output part 11. This may result in excessive clamping force between the ear clip 13 and the ear during wearing, thus compressing the auricle and causing discomfort. Simultaneously, an excessively small distance between the protrusion BP and the sound output part 11 may result in an unsatisfactory docking angle between the sound output part 11 and the external auditory canal, affecting the sound propagation path and effect, leading to a decline in sound quality. An overly compact design of the earphone 100 may also negatively impact its structure and lifespan, especially during prolonged wear, potentially causing damage due to excessive deformation.

[0077] If the first distance D1 is greater than 16mm, the distance between the ear clip 13 and the sound output part 11 is too large, resulting in insufficient contact between the ear clip 13 and the ear during wear. This can cause the earphone 100 to slip or loosen during wear, affecting stability and comfort. An excessively large distance between the ear clip 13 and the sound output part 11 may also result in an unsuitable angle between the sound output part 11 and the external auditory canal, causing a longer sound propagation path before entering the external auditory canal. This can lead to sound attenuation and distortion, especially in the low-frequency range, resulting in a less clear and full sound.

[0078] Therefore, designing the first distance D1 between 13mm and 16mm ensures that the contact force between the ear clip 13 and the ear is moderate, neither pressing too hard on the ear and affecting comfort, nor compromising wearing stability. In addition, the moderate distance helps to ensure the ideal docking angle between the sound output part 11 and the external auditory canal, allowing sound to propagate smoothly and thus providing a clearer, richer, and more natural sound quality experience.

[0079] Please see Figure 4 and Figure 8 This application provides an earphone 100, wherein when a user wears the earphone 100, the angle α1 between the width medial plane Pw of the earphone 100 and the cross-section of the human body is greater than or equal to 15° and less than or equal to 69°.

[0080] Specifically, the angle α1 between the width dividing plane Pw and the cross-section of the human body can be 15°, 18°, 22°, 25°, 30°, 35°, 38°, 40°, 45°, 50°, 55°, or 69°. Preferably, the angle α1 is 22°. The angle α1 can be any value between 18° and 55°; or, the angle α1 can be any value between 22° and 50°; or, the angle α1 can be any value between 25° and 45°; or, the angle α1 can be any value between 30° and 40°; or, the angle α1 can be any value between 35° and 38°.

[0081] The helix has a curved structure, gradually converging from the external auditory canal to the earlobe. If the angle α1 between the width median plane Pw and the cross-section of the human body is less than 15°, the earphone 100 will tend to slide towards the earlobe during wear, making it difficult to secure and potentially causing it to fall off. This affects the wearer's comfort and the sound quality output of the earphone 100. If the angle α1 between the width median plane Pw and the cross-section of the human body exceeds 69°, the sound output part 11 of the earphone 100 will have an excessively large tilt angle, causing excessive pressure on the concha and helix during wear, resulting in ear discomfort and pressure, affecting wearing comfort and potentially limiting the stability of the earphone 100, leading to discomfort or ear fatigue for the wearer.

[0082] The angle α1 between the width split plane Pw and the cross-section of the human body is greater than or equal to 15° and less than or equal to 69°, which enables the earphone 100 to form an appropriate contact angle with the auricle. This ensures that the earphone 100 is firmly fixed to the ear and avoids discomfort caused by pressure, providing a more comfortable and stable wearing experience.

[0083] Please see Figure 7 This application provides an earphone 100, wherein in a first direction A1, the second distance D2 between the concave point CP and the sound output part 11 is greater than or equal to 8 mm and less than or equal to 12 mm.

[0084] Specifically, the value of the second distance D2 can be 8mm, 8.1mm, 8.2mm, 8.8mm, 9.4mm, 9.9mm, 10.1mm, 10.7mm, 10.8mm, 11.1mm, 11.6mm, or 12mm, preferably 11mm. The second distance D2 can be any value between 8.1mm and 11.6mm; or, the second distance D2 can be any value between 8.2mm and 11.1mm; or, the second distance D2 can be any value between 8.8mm and 10.8mm; or, the second distance D2 can be any value between 9.4mm and 10.7mm; or, the second distance D2 can be any value between 9.9mm and 10.1mm.

[0085] If the second distance D2 is less than 8mm, the distance between the concave point CP and the sound outlet 11 is too small, causing the distance from the concha to the helix of the earphone 100 to be compressed. When wearing it, the concave point CP may press on the helix area, causing discomfort and excessive pressure on the auricle, affecting the wearing comfort. At the same time, because the wearing space 101 is too narrow, the fixation of the earphone 100 may be poor, which may easily lead to the earphone 100 being worn unstablely.

[0086] If the second distance D2 is greater than 12mm, the distance between the concave point CP and the sound output part 11 is too large. When the user wears the earphone 100, the ear clip part 13 protrudes too much from the ear helix, causing the earphone 100 to protrude from the ear contour when worn. This increases the risk of the earphone 100 coming into contact with or colliding with external objects. The earphone 100 is more susceptible to interference from external forces, causing the position to shift or even fall off.

[0087] If the second distance D2 between the concave point CP and the sound output part 11 is greater than or equal to 8mm and less than or equal to 12mm, then the distance between the concave point CP and the sound output part 11 is moderate, which will not put too much pressure on the helix area, improve the wearing comfort, and also ensure that the earphone 100 can be firmly fixed in the ear, reducing the risk of the earphone 100 falling off due to external touch or collision.

[0088] Please see Figure 7 This application provides an earphone 100, wherein the ratio of the second distance D2 to the first distance D1 is greater than or equal to 0.60 and less than or equal to 0.85.

[0089] Specifically, the ratio of the second distance D2 to the first distance D1 can be 0.60, 0.65, 0.67, 0.69, 0.70, 0.75, 0.76, 0.80, 0.81, 0.82, 0.83, or 0.85. Preferably, the ratio is 0.75.

[0090] If the ratio of the second distance D2 to the first distance D1 is less than 0.60, it indicates that the distance between the concave point CP and the sound-emitting part 11 is relatively small. This may result in the outer contour of the ear clip 13 being too tight, which could cause the earphone 100 to exert greater pressure on the auricle when worn, leading to discomfort, increased pressure on the auricle, and affecting wearing comfort. In addition, because the distance between the concave point CP and the sound-emitting part 11 is too small, the stability of the earphone 100 may deteriorate when worn, making it difficult to securely fix the earphone 100 to the ear, resulting in unstable wearing and even affecting the durability of wearing.

[0091] If the ratio of the second distance D2 to the first distance D1 is greater than 0.85, the distance between the concave point CP and the sound output part 11 is too large. This may cause the outer contour of the ear clip 13 to be too loose, lacking support for the ear and reducing wearing stability. During wear, the earphone 100 may easily slip due to insufficient contact force, resulting in loose contact between the earphone 100 and the helix, and a poor wearing experience. More importantly, an excessively large distance between the concave point CP and the sound output part 11 may cause the outer contour of the earphone 100 to protrude, increasing the probability of contact with external objects, making it more susceptible to collisions or bumps, thus affecting the stability and safety of the earphone 100, and even causing the earphone 100 to fall off.

[0092] Therefore, the ratio of the second distance D2 to the first distance D1 should be greater than or equal to 0.60 and less than or equal to 0.85. This ensures the appropriate compactness and support of the outer contour of the earphone 100, thereby achieving a comfortable and stable wearing effect. This reasonable configuration within the ratio range not only avoids discomfort and instability caused by the earphone 100 being too tight or too loose, but also ensures that the earphone 100 is more secure when worn, reduces external interference, and improves wearing comfort and safety.

[0093] Please see Figure 7 This application provides an earphone 100, with a reference line RE that is parallel to the second direction A2 and passes through the vertex of the projection of the sound output surface 111 in the first projection plane Pw. When the earphone 100 is not worn, the second included angle α2 between the tangent of the inner contour passing through the concave point CP and the reference plane P3 perpendicular to the reference line is less than or equal to 90°.

[0094] Specifically, the second included angle α2 is the included angle when the user is not wearing headphones 100°. The second included angle α2 can be 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 70°, 78°, 85°, or 90°, with a preferred value of 50°. The second included angle α2 is any value between 30° and 85°; or, the second included angle α2 is any value between 35° and 78°; or, the second included angle α2 is any value between 40° and 70°; or, the second included angle α2 is any value between 45° and 60°; or, the second included angle α2 is any value between 50° and 55°.

[0095] In some embodiments, the second included angle α2 is less than 90° (preferably 50°). If the second included angle α2 is greater than 90°, the wearing space 101 is too large, resulting in insufficient clamping force of the earphone 100, reducing the contact area between the earphone 100 and the ear, leading to poor fixation of the earphone 100 and making it easy to slip or fall off during wear. This is because a larger second included angle α2 causes the design of the earphone 100 to be biased towards the outer side of the auricle, reducing the contact area between the earphone 100 and the ear, thus making it impossible for the earphone 100 to firmly rely on the helix and auricle for stability during wear, affecting the stability and comfort of wearing. If the second included angle α2 is too small, the wearing space 101 is reduced, and the earphone 100 will tightly compress the helix and auricle, increasing local pressure and causing discomfort, especially during long-term wear, which may cause pressure on the helix and ear discomfort, and in severe cases, even ear pain. In addition, if the wearing space 101 is too small, the design of the headphones 100 will not be able to adapt to different ear shapes and structures, affecting the flexibility of wearing and limiting the natural adaptability of the headphones 100 to the ear.

[0096] Therefore, the second included angle α2 is less than 90°, and preferably 50°, which can effectively balance the size of the wearing space 101, ensuring that the earphone 100 can provide sufficient clamping force to prevent it from falling off when worn, while also avoiding excessive pressure concentrated on the helix, which could lead to discomfort. By reasonably designing the included angle, the earphone 100 can fit properly against the helix when worn and form a stable contact with the ear, making the wearing more comfortable and secure, reducing the unpleasant experience caused by insufficient clamping force or excessive pressure, and improving the comfort and stability of wearing.

[0097] Please see Figure 7 In some implementations, when the user is wearing headphones 100, the second included angle α2 is greater than or equal to 40° and less than or equal to 80°.

[0098] Specifically, when the user is wearing headphones 100, the second included angle α2 can be 40°, 45°, 50°, 55°, 58°, 60°, 65°, 68°, 70°, 75°, 78°, or 80°, with a preferred value of 60°. The second included angle α2 can be any value between 45° and 78°; or, the second included angle α2 can be any value between 50° and 75°; or, the second included angle α2 can be any value between 55° and 70°; or, the second included angle α2 can be any value between 58° and 68°; or, the second included angle α2 can be any value between 60° and 65°.

[0099] If the second included angle α2 is less than 40°, the wearing space 101 is too tight. An excessively small wearing space 101 will increase the pressure on the auricle and concave point CP, causing discomfort or pressure, and weakening the wearing comfort and the tolerance of wearing for a long time.

[0100] If the second included angle α2 is greater than 80°, the wearing space 101 will be too large, causing the earphone 100 to protrude relatively beyond the ear's contour, making it more likely to come into contact with or collide with external objects. An excessively large wearing space 101 will also reduce the contact area between the earphone 100 and the ear, thereby reducing the stability of the earphone 100, leading to an insecure fit and increasing the risk of it falling out.

[0101] The second included angle α2 is greater than or equal to 40° and less than or equal to 80°, providing adequate wearing space 101 when the user wears the headphones 100. This space accommodates the helix and antihelix while avoiding an overly cramped or excessively large design. A suitably sized second included angle α2 ensures the secure fit and stability of the headphones 100, reducing the risk of displacement during wear. Simultaneously, the well-designed wearing space 101 prevents the headphones 100 from protruding, reducing the probability of contact with external objects, minimizing the risk of bumps and knocks, and ensuring wearing comfort and safety. This ultimately improves the user's wearing experience and the practicality of the headphones 100.

[0102] Please see Figure 7 This application provides an earphone 100 in which, in a first direction A1, the third distance D3 between the protrusion BP and the reference line RE is greater than or equal to 19 mm and less than or equal to 26 mm.

[0103] Specifically, the third distance D3 can be 19mm, 20mm, 20.4mm, 21.6mm, 21.8mm, 22mm, 22.5mm, 23mm, 23.8mm, 24mm, 25mm, or 26mm, with a preferred value of 22.6mm. The third distance D3 can be any value between 20mm and 25mm; or, any value between 20.4mm and 24mm; or, any value between 21.6mm and 23.8mm; or, any value between 21.8mm and 23mm; or, any value between 22mm and 22.5mm.

[0104] If the third distance D3 is less than 19mm, the third distance D3 between the convex point BP and the reference line RE is too small. The earphone 100 may not be able to fully adapt to the distance between the concha and the helix on the coronal plane, making it difficult or unstable to wear the earphone 100. The sound output part 11 will have difficulty extending into the concha, thus affecting the stability of the fit.

[0105] If the third distance D3 is greater than 26mm, then the third distance D3 between the protrusion BP and the reference line RE is too large. The hook-shaped part 133 where the protrusion BP is located is likely to be too far away from the helix. When wearing the earphone 100, it is easy to collide or rub against external objects, affecting the stability of the wearing.

[0106] The third distance D3 is greater than or equal to 19mm and less than or equal to 26mm, ensuring that the earphone 100 has sufficient wearing space 101 between the concha and the helix, which can avoid the risk of wearing discomfort and external collision, improve the comfort and stability of the earphone 100, and make it remain secure and comfortable during long-term wear.

[0107] Please see Figure 9 This application provides an earphone 100, in which the centroid of the sound outlet 1111 within the first projection plane Pw has a projection center C, and the protrusion BP and the projection center C have a fourth distance D4 in the first direction A1, the fourth distance D4 being greater than or equal to 20mm and less than or equal to 35mm.

[0108] Wherein, the centroid of the sound outlet 1111 is the geometric center of the sound outlet 1111. Specifically, the fourth distance D4 can be 20mm, 22mm, 24mm, 26mm, 27mm, 27.5mm, 28mm, 30mm, 31mm, 32mm, 33mm, or 35mm. Preferably, the fourth distance D4 is 27.2mm. The fourth distance D4 can be any value between 22mm and 33mm; or, the fourth distance D4 can be any value between 24mm and 32mm; or, the fourth distance D4 can be any value between 26mm and 31mm; or, the fourth distance D4 can be any value between 27mm and 30mm; or, the fourth distance D4 can be any value between 27.5mm and 28mm.

[0109] It is understandable that there is a certain distance between the concha and the helix. When the user wears the headphones 100, the sound output part 11 is at least partially housed in the concha, the sound output hole 1111 is aligned with the concha, and the ear clip 13 extends around the helix to the space between the auricle and the head, and at least partially abuts against the back of the auricle 113. Therefore, the fourth distance D4 needs to be adapted to the distance between the concha and the helix.

[0110] If the fourth distance D4 is less than 20mm, then the fourth distance D4 is too small. The ear clip 13 is difficult to fix the earphone 100 after it surrounds the helix while the sound outlet 11 is at least partially housed in the concha cavity. In addition, the fourth distance D4 is too small, which makes the earphone 100 contact the auricle too tightly, which can easily cause pressure on the ear and cause discomfort to the user.

[0111] If the fourth distance D4 is greater than 35mm, then the fourth distance D4 is too large. When the sound output part 11 is at least partially housed in the concha cavity, the distance between the ear clip part 13 and the auricle is too far. The contact area between the earphone 100 and the auricle is reduced, and the ear clip cannot fix the auricle. When wearing the earphone, the earphone 100 is easy to slide or fall off, thus affecting the stability of wearing.

[0112] Therefore, in this embodiment, the fourth distance D4 is between 20mm and 35mm, ensuring that the contact between the ear clip 13 and the auricle is neither too tight nor too loose. At this point, the earphone 100 can be securely fixed to the ear, guaranteeing wearing comfort and optimizing the contact surface between the earphone 100 and the auricle. This effectively prevents the earphone 100 from slipping or falling off, thus improving the stability of the earphone 100.

[0113] Please see Figure 9 This application provides an earphone 100, in the second direction A2, the projection center C and the vertex of the projection of the back surface 113 in the first projection plane Pw have a fifth distance D5, and the ratio between the fourth distance D4 and the fifth distance D5 is greater than or equal to 1.4 and less than or equal to 1.8.

[0114] Specifically, the ratio between the fourth distance D4 and the fifth distance D5 can be: 1.4, 1.45, 1.5, 1.55, 1.6, 1.65, 1.7, 1.75, or 1.8. Preferably, the ratio between the fourth distance D4 and the fifth distance D5 is 1.5.

[0115] Understandably, the fifth distance D5 represents the distance from the centroid of the sound outlet 1111 to the back 113 of the earphone 100, which can characterize the size of the earphone 100 in the cross-section of the human body when the user is wearing the earphone 100.

[0116] If the ratio between the fourth distance D4 and the fifth distance D5 is less than 1.4, then the fourth distance D4 is too large. When the sound output part 11 is at least partially housed in the concha cavity, the distance between the ear clip part 13 and the auricle is too far. The contact area between the earphone 100 and the auricle is reduced, and the ear clip cannot fix the auricle. When wearing the earphone, the earphone 100 is prone to slipping or falling off, thus affecting the stability of wearing.

[0117] If the ratio between the fourth distance D4 and the fifth distance D5 is greater than 1.8, then the fifth distance D5 is too large, the size of the sound output part 11 in the second direction A2 is too large, and the back 113 of the sound output part 11 is too far from the human body, which increases the risk of the earphone 100 falling off due to external impact or bump.

[0118] The ratio between the fifth distance D5 and the fourth distance D4 is greater than or equal to 1.4 and less than or equal to 1.8. The contact between the earphone 100 and the auricle is neither too tight nor too loose, and it can be stably fixed in the ear when worn to avoid slipping, thereby improving the comfort and stability of wearing.

[0119] Please see Figure 9This application provides an earphone 100, with a reference line RE as a straight line parallel to the second direction A2 and passing through the vertex of the projection of the sound output surface 111 in the first projection plane Pw; in the first direction A1, there is a sixth distance D6 between the projection center C and the reference line RE, and the ratio between the sixth distance D6 and the fourth distance D4 is greater than or equal to 0.1 and less than or equal to 0.35.

[0120] Specifically, the ratio between the sixth distance D6 and the fourth distance D4 can be: 0.1, 0.12, 0.14, 0.16, 0.17, 0.18, 0.2, 0.25, 0.3, or 0.35. Preferably, the ratio between the sixth distance D6 and the fourth distance D4 is 0.17. It can be understood that the sixth distance D6 represents the distance between the projection center C of the centroid of the sound outlet 1111 and the reference line RE, characterizing the degree of offset of the position of the sound outlet 1111 within the sound outlet 11 relative to the reference line RE. When a user wears the headphones 100, the sixth distance D6 affects the alignment between the sound outlet 1111 and the concha cavity, thereby affecting the wearing stability and sound quality performance of the headphones 100.

[0121] If the ratio of the sixth distance D6 to the fourth distance D4 is less than 0.1, then the fourth distance D4 is too large. In this case, although the sound output part 11 is at least partially accommodated in the concha, the distance between the ear clip 13 and the auricle is too far, resulting in a reduction in the contact area between the earphone 100 and the auricle. Because the ear clip cannot effectively provide sufficient support for the auricle, the earphone 100 is prone to slipping or falling off when worn, thereby affecting the alignment of the sound output hole 1111 with the concha and resulting in poor sound output.

[0122] If the ratio of the sixth distance D6 to the fourth distance D4 is greater than 0.35, then the sixth distance D6 is relatively too large, and the position of the sound outlet 1111 is offset too far from the reference line RE, making it difficult for the sound outlet 1111 to be properly aligned with the concha. In this case, the sound quality of the headphone 100 may be affected, with significant sound loss during propagation.

[0123] The ratio between the sixth distance D6 and the fourth distance D4 is greater than or equal to 0.1 and less than or equal to 0.35mm. This ensures that the contact area between the earphone 100 and the auricle is moderate, the ear clip effectively provides sufficient support for the auricle, improves the wearing stability, and also ensures that the sound outlet 1111 is well aligned with the concha cavity, resulting in good sound output.

[0124] Please see Figure 4 , Figure 5A and Figure 10This application provides an earphone 100, wherein when a user wears the earphone 100, the third included angle α3 between the center line CL of the sound outlet 1111 and the sagittal plane of the human body is greater than or equal to 30° and less than or equal to 90°.

[0125] Specifically, the third included angle α3 can be 30°, 33°, 35°, 41°, 44°, 49°, 54°, 58°, 67°, 73°, 79°, or 90°. It is understandable that the setting of the third included angle α3 relates to the alignment of the sound propagation direction with the ear canal when the earphone 100 is worn. The third included angle α3 can be any value between 33° and 79°; or, any value between 35° and 73°; or, any value between 41° and 67°; or, any value between 44° and 58°; or, any value between 49° and 54°.

[0126] If the third included angle α3 is less than 57°, then the center line CL of the sound outlet 1111 is too close to the sagittal plane, the connection angle between the sound direction of the sound outlet 1111 and the concha cavity is not ideal, the angle at which the sound is transmitted to the concha cavity is too large, which may cause the sound to be unable to be effectively introduced into the external auditory canal, affecting the transmission of sound effects.

[0127] If the third included angle α3 is greater than 63°, the angle between the center line CL of the sound outlet 1111 and the sagittal plane is too large, and the angle between the direction of sound propagation and the concha cavity is too small, causing the sound to easily escape from the concha cavity and fail to be transmitted to the external auditory canal, resulting in sound diffusion, distortion, or blurred sound quality.

[0128] The third included angle α3 is between 57° and 63°, which ensures that the sound outlet 1111 forms a suitable angle with the concha cavity, allowing the sound to enter the external auditory canal more directly and adapt to the natural shape of the external auditory canal. This not only improves the sound transmission efficiency but also reduces the loss of sound during propagation, ensuring clearer sound quality.

[0129] Please see Figure 2 Figure 3 and Figure 9 This application provides an earphone 100, wherein the fourth included angle α4 between the second direction A2 and the center line CL is greater than or equal to 42° and less than or equal to 53°.

[0130] Specifically, the fourth included angle α4 can be 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, or 53°. The fourth included angle α4 can be any value between 43° and 52°; or, the fourth included angle α4 can be any value between 44° and 51°; or, the fourth included angle α4 can be any value between 45° and 50°; or, the fourth included angle α4 can be any value between 46° and 49°; or, the fourth included angle α4 can be any value between 47° and 48°. If the fourth included angle α4 is zero, that is, the reference line RE is parallel to the coronal plane, the dimensional design of the earphone 100 in the coronal plane direction must take into account the space between the concha and the helix to ensure that the sound outlet 1111 is aligned with the concha and that the earphone 100 can provide a stable wearing effect around the helix.

[0131] If the fourth included angle α4 is less than 42°, even if the sound outlet 1111 is aligned with the concha cavity, the earphone 100 will have difficulty forming a good contact with the helix, resulting in the earphone 100 being unstable, easy to loosen, and having a poor wearing effect. The looseness of the earphone 100 will cause the sound propagation direction to be inconsistent, affecting the clarity and penetration of the sound quality.

[0132] If the fourth included angle α4 is greater than 53°, although the sound hole 1111 may still be aligned with the concha cavity, the excessive deviation will cause the sound to diffuse during propagation, resulting in sound quality distortion, blurry sound or lack of clarity. At the same time, the contact area between the earphone 100 and the auricle will be reduced, making it unstable to wear and easy to slip or loosen.

[0133] If the fourth included angle α4 is greater than or equal to 42° and less than or equal to 53°, the sound hole 1111 can be aligned with the concha cavity, thereby improving the sound quality and preventing the earphone 100 from slipping or coming loose during wear, ensuring the stability and comfort of wearing.

[0134] Please see Figure 4 and Figure 5A This application provides an earphone 100, wherein the maximum dimension of the projection of the hook-shaped part 133 in the first projection plane Pw is greater than or equal to 3 mm and less than or equal to 6 mm.

[0135] Specifically, the widest part of the outline of the hook-shaped portion 133 projected onto the first projection plane Pw can be 3mm, 3.2mm, 3.4mm, 3.6mm, 3.8mm, 4mm, 4.2mm, 4.4mm, 4.6mm, 4.8mm, 5mm, or 6mm. Preferably, the widest part of the outline of the hook-shaped portion 133 projected onto the first projection plane Pw is 4.5mm. The widest part of the outline of the hook-shaped part 133 projected onto the first projection plane Pw can be any value between 3.2 mm and 5 mm; or, the widest part of the outline of the hook-shaped part 133 projected onto the first projection plane Pw can be any value between 3.4 mm and 4.8 mm; or, the widest part of the outline of the hook-shaped part 133 projected onto the first projection plane Pw can be any value between 3.6 mm and 4.6 mm; or, the widest part of the outline of the hook-shaped part 133 projected onto the first projection plane Pw can be any value between 3.8 mm and 4.4 mm; or, the widest part of the outline of the hook-shaped part 133 projected onto the first projection plane Pw can be any value between 4 mm and 4.2 mm.

[0136] Understandably, the setting of the widest part of the hook-shaped portion 133, within the range of 3mm to 6mm, determines the contact area between the earphone 100 and the back of the ear 113 when worn. If the widest part of the hook-shaped portion 133 is less than 3mm, the contact area between the earphone 100 and the back of the ear 113 is small, resulting in poor fixation of the earphone 100, making it prone to slipping or falling off, thus affecting the stability of the fit. If the widest part of the hook-shaped portion 133 is greater than 6mm, the contact area between the earphone 100 and the back of the ear 113 is too large, which may cause discomfort during wear, especially during prolonged wear, increasing pressure and reducing comfort. The widest part of the projection of the hook-shaped portion 133 onto the first projection plane Pw is greater than or equal to 3mm and less than or equal to 6mm, which effectively increases the contact area between the earphone 100 and the back of the ear 113, thereby improving the fixation effect during wear, ensuring that the earphone 100 is securely fixed to the ear, and preventing slipping or falling off.

[0137] Please see Figure 4 and Figure 5B This application provides an earphone 100, the ear clip portion 13 includes a flexible member 135, the flexible member 135 forms a connecting sub-portion 131 and a hook-shaped sub-portion 133, that is, the flexible member 135 forms the ear clip portion 13.

[0138] Specifically, the flexible component 135 can be made of soft and elastic materials, such as silicone, rubber, or polyvinyl chloride. Rubber includes, but is not limited to, natural rubber, nitrile rubber, fluororubber, polyurethane rubber, EPDM rubber, or silicone rubber. The flexible component 135 can return to its original shape after being subjected to force, effectively absorbing and dispersing the force. When the wearer's ear is subjected to external pressure or the earphone 100 slightly slides against the ear, the flexible component 135 can absorb and evenly distribute the external force, reducing the pressure directly acting on the auricle, thereby effectively alleviating discomfort and improving wearing comfort. Furthermore, the elastic properties of the flexible component 135 allow the ear clip 13 to form a good fit when worn, so that the hook-shaped part 133 firmly surrounds the ear helix and provides sufficient clamping force, ensuring that the earphone 100 is securely fixed to the ear and preventing the earphone 100 from sliding or falling off.

[0139] Please see Figure 4 and Figure 5B In some embodiments, the ear clip portion 13 further includes a deformable member 137. A flexible member 135 covers the outer surface of the deformable member 137 and together with the deformable member 137 forms a connecting sub-portion 131 and a hook-shaped sub-portion 133 (i.e., the ear clip portion 13). The deformable member 137 includes a first end and a second end opposite to each other. The first end is connected to the sound output portion 11. The deformable member 137 can change its bending angle under the action of force.

[0140] Specifically, the deformable part 137 is usually made of materials with a certain rigidity and deformation recovery ability, such as metal or plastic. Since everyone's auricle shape, helix size and wearing comfort requirements are different, the deformable part 137 can adjust the bending angle of the ear clip 13 under the action of external force according to the different shape of the auricle and the wearing conditions of the ear, so as to better adapt to the auricle shape of different people, make the earphone 100 fit the ear more tightly, and avoid the earphone 100 from slipping or causing discomfort due to improper wearing.

[0141] Please see Figure 4 and Figure 5B In some embodiments, the first end of the deformable member 137 is provided with a first connecting block 1371, and the second end of the deformable member 137 is provided with a second connecting block 1372. The first connecting block 1371 and the sound output part 11 are detachably connected.

[0142] In one example, the area of ​​the projection of the first connecting block 1371 onto the first projection plane Pw and the area of ​​the projection of the second connecting block 1372 onto the first projection plane Pw are both greater than the area of ​​the projection of the deformable element 137 onto the first projection plane Pw.

[0143] Specifically, in one example, the first connecting block 1371 and the sound-emitting part 11 can be joined together by a detachable connection method, including but not limited to snap-fit ​​connections or threaded connections. In another example, the first connecting block 1371 and the sound-emitting part 11 can be joined together by a non-detachable connection method, including but not limited to bonding or welding. Both the first connecting block 1371 and the second connecting block 1372 can be one or multiple; in this application, there is only one, which is easier to mold. Within the first projection plane Pw, the projected areas of the first connecting block 1371 and the second connecting block 1372 are both larger than the projected area of ​​the deformable element 137. This increases the contact area between the first connecting block 1371 and the flexible element 135, as well as the contact area between the second connecting block 1372 and the flexible element 135. This helps to enhance the bonding force between the flexible element 135 and the deformable element 137, improves the connection strength between the flexible element 135 and the deformable element 137, and prevents the flexible element 135 and the deformable element 137 from falling off during wear due to frequent bending or external impact. This improves the service life and wearing stability of the earphone 100.

[0144] Please see Figure 4 and Figure 5B In another example, the area of ​​the projection of the first connecting block 1371 onto the first projection plane Pw is greater than the area of ​​the projection of the second connecting block 1372 onto the first projection plane Pw.

[0145] Specifically, since the first connecting block 1371 needs to connect with the sound output part 11, a larger first connecting block 1371 can provide a larger contact area, enhancing the connection strength between the flexible part 135 and the sound output part 11. This prevents the earphone 100 from loosening or falling off due to movement or external force during wear, ensuring the long-term stable use of the earphone 100. When the user wears the earphone 100, the hook-shaped part 133 area where the second connecting block 1372 is located will at least partially contact the back of the auricle 113. The relatively small second connecting block 1372 can control the size of the hook-shaped part 133, avoiding excessive pressure on the back of the auricle 113, thus improving wearing comfort while ensuring the earphone 100 is securely worn.

[0146] Please see Figure 4 and Figure 5B In some embodiments, the hardness of the flexible element 135 is less than the hardness of the deformable element 137.

[0147] Specifically, the flexible component 135 has a lower hardness than the deformable component 137, ensuring that the flexible component 135 better adapts to the shape of the auricle when subjected to external forces, providing a more comfortable wearing experience. The lower hardness of the flexible component 135 allows it to better adapt to different curves of the ear during wear, ensuring that the earphone 100 is less likely to slip or fall out. Simultaneously, the flexible component 135 effectively disperses and absorbs external forces, reducing ear discomfort or pain caused by improper wearing, increasing the wearing comfort of the earphone 100, and ensuring that it will not cause discomfort during prolonged wear, thereby improving the overall user experience.

[0148] Please see Figure 4 and Figure 5B In some embodiments, the flexible element 135 is made of silicone, and the deformable element 137 is made of titanium.

[0149] Specifically, silicone possesses excellent elasticity and deformation properties, with low hardness, allowing it to deform sufficiently under stress and return to its original shape after the stress is released. The flexible component 135 is made of silicone, enabling it to better conform to the curves of the ear and provide a more comfortable wearing experience. The lower hardness not only helps alleviate localized pressure on the ear and prevents a feeling of pressure, but also effectively adapts to individual differences in ear shapes, ensuring stability and comfort during wear. Furthermore, silicone has good fatigue resistance and durability, maintaining good deformation capacity during prolonged use and resisting aging or loss of elasticity, thereby extending the lifespan of the earphone 100. For example, the flexible component 135 is made of silicone with a hardness greater than or equal to 20A and less than or equal to 40A.

[0150] Titanium possesses high strength and rigidity, and compared to other metals, it has a lower density. The deformation component 137 is made of titanium, which allows it to maintain a certain level of rigidity and durability while reducing the overall weight of the earphone 100, thus reducing the burden of wearing it and improving comfort. It also enhances the overall stability and durability of the earphone 100. Therefore, the flexible component 135 is made of silicone, and the deformation component 137 is made of titanium, which not only effectively improves wearing comfort and stability but also enhances the user experience of the earphone 100, ensuring that the earphone 100 will not cause discomfort during prolonged wear.

[0151] Please see Figure 4 and Figure 5B In some embodiments, the cross-sectional area of ​​the deformable member 137 obtained by a section perpendicular to its extension direction is greater than or equal to 0.3 mm and less than or equal to 0.7 mm.

[0152] The cross-section perpendicular to the extension direction of the deformable member 137 is also perpendicular to the first projection plane Pw. Specifically, the cross-sectional area of ​​the deformable member 137 can be 0.3mm, 0.35mm, 0.4mm, 0.42mm, 0.45mm, 0.5mm, 0.53mm, 0.55mm, 0.6mm, 0.63mm, 0.65mm, or 0.7mm. Preferably, the cross-sectional area of ​​the deformable member 137 is 0.5mm. The cross-sectional area of ​​the deformable part 137 can be any value between 0.35mm and 0.65mm; or, the cross-sectional area of ​​the deformable part 137 can be any value between 0.4mm and 0.63mm; or, the cross-sectional area of ​​the deformable part 137 can be any value between 0.42mm and 0.6mm; or, the cross-sectional area of ​​the deformable part 137 can be any value between 0.45mm and 0.55mm; or, the cross-sectional area of ​​the deformable part 137 can be any value between 0.5mm and 0.53mm.

[0153] If the cross-sectional area of ​​the deformable part 137 is less than 0.3 mm, the cross-sectional area of ​​the deformable part 137 is too small, and the strength of the deformable part 137 itself is insufficient. This results in insufficient clamping force of the ear clip 13 on the auricle, making it impossible to effectively fix the earphone 100 on the auricle, and the earphone 100 is prone to slipping when worn. If the cross-sectional area of ​​the deformable part 137 is greater than 0.7 mm, the cross-sectional area of ​​the deformable part 137 is too large, which may lead to an excessively large contact area between the deformable part 137 and the auricle, resulting in increased contact pressure between the earphone 100 and the auricle, thus causing a feeling of pressure when wearing it and affecting wearing comfort. An excessively large cross-sectional area of ​​the deformable part 137 may also cause the deformable part 137 to be unable to effectively adapt to the curve of the auricle, resulting in instability when wearing it, and may even cause the earphone 100 to slip or loosen, reducing wearing stability.

[0154] The cross-sectional area of ​​the deformable part 137 is greater than or equal to 0.3 mm and less than or equal to 0.7 mm. It can provide sufficient clamping force and stability while ensuring the wearing comfort of the earphone 100, so as to prevent the earphone 100 from loosening or slipping during wearing, thereby improving the wearing comfort and stability.

[0155] Please see Figure 4 and Figure 5B In some embodiments, in the direction from the connecting sub-part 131 to the hook-shaped sub-part 133, the outer contour dimension of the flexible member 135 first decreases, then increases, and then decreases again.

[0156] Specifically, in the direction from the connecting part 131 to the hook-shaped part 133, the outer contour size of the flexible member 135 first decreases, providing clearance space for the antihelix and auricle, preventing excessive contact between the ear clip 13 and the antihelix and auricle, and avoiding the feeling of a foreign object caused by excessive tightness. Further, the outer contour size of the flexible member 135 increases, at least increasing the contact area of ​​the hook-shaped part 133 with the back of the auricle 113, preventing the earphone 100 from slipping and loosening during wear. Further still, the outer contour size of the flexible member 135 decreases again.

[0157] Specifically, in the direction from the connecting part 131 to the hook-shaped part 133, the outer contour size of the flexible member 135 first decreases, providing clearance for the antihelix and auricle in the auricle, thereby preventing excessive contact between the ear clip 13 and the antihelix and auricle, reducing discomfort or foreign body sensation caused by excessive tightness. Next, the outer contour size of the flexible member 135 increases, at least increasing the contact area of ​​the hook-shaped part 133 when it contacts the back of the auricle 113, thereby enhancing the fixation effect of the earphone 100 during wearing and preventing it from slipping off. Finally, since there is usually a certain curvature in the angle between the back of the auricle 113 and the head, the outer contour size of the flexible member 135 decreases again, better adapting to the angle between the back of the auricle 113 and the head. Reducing the outer contour size of the flexible member 135 allows the earphone 100 to fit more closely to this natural curvature, avoiding excessive gaps or pressure points. This ensures that during wear, the flexible part 135 can naturally bend along the shape of the back of the ear 113, thereby reducing the pressure on the head and improving wearing comfort.

[0158] Please see Figure 4 and Figure 5A This application provides an earphone 100, wherein the speaker 20 has a sound-emitting surface 21 through which sound waves pass, the sound-emitting surface 21 facing the sound-emitting surface 111, and the ratio of the intercepting area of ​​the sound-emitting hole 1111 to the area of ​​the sound-emitting surface 21 is greater than or equal to 0.2 and less than or equal to 0.65.

[0159] Specifically, the ratio of the intercepting area of ​​the sound outlet 1111 to the area of ​​the sound outlet surface 21 can be: 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, or 0.65. Preferably, the ratio of the intercepting area of ​​the sound outlet 1111 to the area of ​​the sound outlet surface 21 is 0.62.

[0160] If the ratio of the cross-sectional area of ​​the sound outlet 1111 to the area of ​​the sound outlet surface 21 is less than 0.2, it indicates that the area of ​​the sound outlet 1111 is too small relative to the sound outlet part 11 of the speaker 20. Insufficient area of ​​the sound outlet 1111 prevents the sound emitted by the speaker 20 from propagating through the sound outlet 1111, resulting in obstructed sound output. The sound is constrained during propagation and cannot fully release its energy, making the overall sound effect muffled and lacking penetration. Furthermore, an excessively small sound outlet 1111 may also cause the sound to be too concentrated, producing a local compression effect, resulting in unbalanced sound and further reducing sound quality.

[0161] If the ratio of the cross-sectional area of ​​the sound outlet 1111 to the area of ​​the sound outlet surface 21 is greater than 0.65, then the area of ​​the sound outlet 1111 is too large relative to the area of ​​the speaker 20, resulting in excessive sound diffusion during propagation. This causes the sound energy to attenuate rapidly during propagation, and excessive sound diffusion may lead to unclear sound quality and poor sound output.

[0162] The ratio of the cross-sectional area of ​​the sound outlet 1111 to the area of ​​the sound outlet surface 21 is between 0.2 and 0.65. The sound outlet 1111 can provide a suitable sound propagation channel, and the sound emitted by the speaker 20 can be effectively released through the sound outlet 1111, avoiding the constraint or excessive diffusion of sound propagation, and ensuring the smoothness and clarity of the sound.

[0163] Please see Figure 4 , Figure 5A and Figure 11 In some embodiments, when the user is wearing the headphones 100, the seventh distance D7 between the centroid C1 of the projection T1 of the sound outlet 1111 and the centroid C2 of the projection T2 of the sound outlet surface is less than or equal to 1 mm within the second projection plane Ps where the sagittal plane of the human body is located.

[0164] Specifically, the seventh distance D7 can be: 0.1mm, 0.2mm, 0.26mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.67mm, 0.7mm, 0.8mm, 0.9mm, or 1mm. The seventh distance D7 can be any value between 0.2mm and 0.9mm; or, the seventh distance D7 can be any value between 0.26mm and 0.8mm; or, the seventh distance D7 can be any value between 0.3mm and 0.7mm; or, the seventh distance D7 can be any value between 0.4mm and 0.67mm; or, the seventh distance D7 can be any value between 0.5mm and 0.6mm.

[0165] If the seventh distance D7 is greater than 1mm, the sound outlet 1111 will be significantly offset from the direction of sound propagation. The sound propagation path may be obstructed or deviated, resulting in a large deviation between the direction of sound propagation and the concha cavity, thus affecting the sound quality.

[0166] If the seventh distance D7 is less than or equal to 1mm, the sound outlet 1111 is closer to the direction of sound propagation, and the sound can be effectively transmitted to the concha cavity, avoiding problems of distortion or excessive diffusion. At the same time, because the alignment of the sound outlet 1111 with the direction of sound propagation is more precise, the headphones 100 are more stable when worn, avoiding sound leakage or unevenness.

[0167] Please see Figure 4 , Figure 5A and Figure 12 This application provides an earphone 100. When a user wears the earphone 100, within the second projection plane Ps where the sagittal plane of the human body is located, the ratio of the area S3 of the projection T1 of the sound outlet 1111 to the area S4 of the projection T3 of the sound outlet 11 is greater than or equal to 0.1 and less than or equal to 0.4. The ratio of the interception area of ​​the sound outlet 1111 to the area of ​​the sound outlet surface 21 is greater than or equal to 0.2 and less than or equal to 0.65.

[0168] Specifically, the ratio of area S3 to area S4 can be: 0.1, 0.12, 0.14, 0.16, 0.18, 0.2, 0.25, 0.3, 0.35, or 0.4. Preferably, the ratio of area S3 to area S4 is 0.16.

[0169] Understandably, the ratio of area S3 to area S4 reflects the degree of coverage of the sound outlet 1111 over the sound outlet part 11 of the loudspeaker 20, and characterizes the effective area through which sound passes through the sound outlet 1111.

[0170] If the ratio of area S3 to area S4 is less than 0.1, it indicates that the area of ​​the sound outlet 1111 is too small relative to the area of ​​the sound outlet 11. The sound outlet 1111 cannot effectively output the sound emitted by the speaker 20, resulting in insufficient sound release and a muffled or lacking-penetration sound quality. Simultaneously, an excessively small sound outlet 1111 may restrict sound propagation, causing uneven or distorted sound, further reducing sound quality. If the ratio of area S3 to area S4 is greater than 0.4, the area of ​​the sound outlet 1111 is relatively too large, potentially leading to excessive sound diffusion and unstable sound propagation direction, resulting in a blurry or unclear sound quality, especially poor performance in the high-frequency range. A ratio of area S3 to area S4 between 0.1 and 0.4 ensures a reasonable match between the area of ​​the sound outlet 1111 and the area of ​​the sound outlet 11, guaranteeing effective sound output while avoiding excessive sound diffusion or confinement, thus ensuring clear sound quality.

[0171] Please see Figure 4 , Figure 5A and Figure 12 This application provides an earphone 100, in which, when a user wears the earphone 100, the ratio of the area S5 of the projection T4 of the concha cavity of the human body to the area S4 of the projection T3 of the sound outlet 11 within the second projection plane Ps where the sagittal plane of the human body is located is greater than or equal to 0.7 and less than or equal to 0.95.

[0172] Specifically, the ratio of area S5 to area S4 can be 0.7, 0.72, 0.74, 0.76, 0.78, 0.8, 0.82, 0.84, 0.86, 0.9 or 0.95, preferably 0.86.

[0173] If the ratio of area S5 to area S4 is less than 0.7, the area S4 of the projection T3 of the sound-emitting part 11 is too large relative to the concha. This mismatch between the sound-emitting part 11 and the concha may prevent the earphone 100 from making a tight contact with the concha, resulting in a loose feel, unstable fit, and a tendency for the earphone 100 to slip or fall off, affecting comfort and stability. Furthermore, an excessively large sound-emitting part 11 may exert strong contact pressure on the auricle, causing excessive compression and discomfort or pain, thus affecting the comfort of wearing the earphone 100 for extended periods.

[0174] If the ratio of area S5 to area S4 exceeds 0.95, the sound output part 11 is relatively small, resulting in insufficient contact area between the sound output part 11 and the concha cavity, making it impossible to stably fix the earphone 100. At the same time, a smaller sound output part 11 may cause the earphone 100 to have too little contact surface with the auricle, making the earphone 100 prone to sound leakage.

[0175] The ratio of area S5 to area S4 is greater than or equal to 0.7 and less than or equal to 0.95. The projected area T4 of the sound output part 11 is relatively balanced with the projected area T5 of the concha cavity. This ensures sufficient contact area between the earphone 100 and the concha cavity, providing a stable wearing effect, while avoiding excessive pressure on the auricle and improving wearing comfort. At the same time, it also ensures good sound output from the earphone 100 and reduces sound leakage.

[0176] Please see Figure 4 , Figure 5A and Figure 12 This application provides an earphone 100, in which, when a user wears the earphone 100, the eighth distance D8 between the centroid C3 of the projection T3 of the sound output part 11 and the centroid C4 of the projection of the external auditory canal of the human body is greater than or equal to 1.5 mm and less than or equal to 11 mm within the second projection plane Ps where the sagittal plane of the human body is located.

[0177] Specifically, the eighth distance D8 can be 1.5mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 10.8mm, or 11mm. The eighth distance D8 can be any value between 2mm and 10.8mm; or, the eighth distance D8 can be any value between 3mm and 10mm; or, the eighth distance D8 can be any value between 4mm and 9mm; or, the eighth distance D8 can be any value between 5mm and 8mm; or, the eighth distance D8 can be any value between 6mm and 7mm.

[0178] If the eighth distance D8 is less than 1.5mm, the sound outlet 1111 of the sound outlet 11 may be too close to the ear canal, causing the earphone 100 to make too tight a contact with the ear canal. This could result in excessive pressure on the earphone 100, causing discomfort for the user. Furthermore, an excessively small eighth distance D8 may also affect the sound transmission path. When the earphone 100 is in too tight a contact with the ear canal, the shape of the ear canal may restrict the natural propagation of sound, leading to uneven sound transmission or localized distortion.

[0179] If the distance D8 is greater than 11mm, the distance between the sound outlet 11 and the external auditory canal is too large, causing excessive diffusion of sound during propagation. This excessive distance causes the sound to diffuse rapidly along its propagation path, resulting in attenuation of sound energy. This attenuation leads to insufficient sound intensity received by the external auditory canal, failing to provide ideal sound quality and auditory experience. The sound fails to be effectively focused and conducted into the external auditory canal, affecting the user's hearing.

[0180] In this embodiment, the eighth distance D8 is greater than or equal to 1.5mm and less than or equal to 11mm, ensuring that there is an appropriate distance between the earphone 100 and the external ear canal. This ensures that the earphone 100 does not put too much pressure on the external ear canal when worn, and that the sound can be effectively transmitted within the external ear canal, avoiding excessive diffusion or attenuation, releasing sound energy to the maximum extent, and maintaining the clarity and intensity of the sound.

[0181] Please see Figure 4 , Figure 5A and Figure 13 This application provides an earphone 100, which further includes a third direction A3, which is perpendicular to both the first direction A1 and the second direction A2. The ratio between the length L2 of the sound output part 11 in the first direction A1 and the length L3 of the sound output part 11 in the third direction A3 is greater than or equal to 1.3 and less than or equal to 2.3.

[0182] Specifically, the ratio of length L2 to length L3 can be 1.3, 1.35, 1.4, 1.45, 1.5, 1.55, 1.6, 1.65, 1.7, or 2.3. Preferably, the ratio of length L2 to length L3 is 1.57.

[0183] Length L2 represents the dimension of the sound part 11 in the first direction A1, which is related to the distance from the concha to the auricle of the earphone 100. Length L3 represents the dimension of the sound part 11 in the third direction A3, which is related to the size of the concha.

[0184] If the ratio of length L2 to length L3 is less than 1.3, then length L2 is too small, and at least part of the sound-emitting part 11 will be difficult to fit into the concha, resulting in unstable or uncomfortable wearing. This can cause the earphone 100 to slip or fall out during wear, affecting the stability of the fit. Simultaneously, because the earphone 100 cannot fit well into the concha, sound cannot effectively enter the external auditory canal, causing a decrease in sound propagation efficiency, leading to sound quality distortion or insufficient transmission, affecting the user's listening experience. If the ratio of length L2 to length L3 is greater than 2.3, then length L3 is too large, making it difficult for the sound-emitting part 11 to be partially inserted into the concha, resulting in unstable wearing and affecting wearing comfort and sound quality transmission within the external auditory canal.

[0185] The ratio of length L2 to length L3 is greater than or equal to 1.3 and less than or equal to 2.3. This ensures that the earphone 100 can comfortably fit the structure of the concha cavity, that the sound output part 11 can properly connect with the concha cavity, and that the stability and comfort during wearing are guaranteed. At the same time, it also ensures that the sound can be transmitted into the ear canal, thereby improving the sound propagation efficiency.

[0186] Please see Figure 4 , Figure 5A and Figure 12In some embodiments, when the user wears the headphones 100, the sound output part 11 is at least partially housed in the concha cavity of the human body, and the projection of the sound output part 11 at least partially coincides with the projection of the helix of the human body in the second projection plane Ps where the sagittal plane of the human body is located.

[0187] Specifically, the sound-emitting part 11 is at least partially housed within the concha cavity, ensuring that the sound outlet 1111 of the earphone 100 is aligned with the concha cavity, thereby preventing excessive diffusion or energy attenuation of sound during propagation. The projection of the sound-emitting part 11 at least partially overlaps with the projection of the helix, enabling the earphone 100 to partially contact the helix and enhancing the stability of wearing the earphone 100. The helix is ​​an important structure of the ear, and good contact helps to secure the earphone 100, preventing it from slipping or loosening during wear.

[0188] Please see Figure 4 , Figure 5A and Figure 12 This application provides an earphone 100, wherein the ratio between the projection of the sound-emitting part 11 housed in the concha cavity of the human body and the projection of the sound-emitting part 11 is greater than or equal to 0.6 and less than or equal to 1.

[0189] Specifically, the ratio between the projection of the sound-emitting part 11 within the human ear concha cavity and the projection of the sound-emitting part 11 itself can be 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, or 1. Preferably, the ratio is 0.7.

[0190] If the ratio between the projection of the sound-emitting part 11 within the concha cavity and the projection of the sound-emitting part 11 itself is less than 0.6, the projected area of ​​the sound-emitting part 11 within the concha cavity is too small, causing the earphone 100 to be unable to be securely fixed to the ear, increasing the risk of the earphone 100 slipping or falling out. An excessively small ratio may also result in wasted space in the design of the earphone 100, failing to make reasonable use of the space within the concha cavity. This not only affects wearing comfort but may also lead to an ergonomic design of the earphone 100, resulting in unnecessary size waste.

[0191] If the ratio between the projection of the sound-emitting part 11 within the concha cavity and the projection of the sound-emitting part 11 is greater than or equal to 0.6 and less than or equal to 1, the sound-emitting part 11 can reasonably adapt to the space of the concha cavity, ensuring that the earphone 100 is fixed and stable within the concha cavity, avoiding instability and discomfort caused by excessively small size. Furthermore, an appropriate ratio can effectively utilize the space of the concha cavity, avoiding waste due to an excessively large earphone 100 size and improving wearing comfort.

[0192] Please see Figure 4 , Figure 5A and Figure 12This application provides an earphone 100, in which, when a user wears the earphone 100, the ninth distance D9 between the centroid C3 of the projection T3 of the sound output part 11 and the centroid C5 of the projection of the ear clip part 13 in the second projection plane Ps where the sagittal plane of the human body is located is greater than or equal to 8 mm and less than or equal to 18 mm.

[0193] Specifically, the ninth distance D9 can be 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 17mm, or 18mm. Preferably, the ninth distance D9 is 13.86mm. The ninth distance D9 can be any value between 8.5mm and 17mm; or, the ninth distance D9 can be any value between 9mm and 15mm; or, the ninth distance D9 can be any value between 9.5mm and 14mm; or, the ninth distance D9 can be any value between 10mm and 13mm; or, the ninth distance D9 can be any value between 11mm and 12mm.

[0194] If the ninth distance D9 is less than 8mm, the shape of the earphone 100 will be too compact, and the distance between the sound output part 11 and the ear clip part 13 will be insufficient, making it difficult to fit the structure of the ear, especially the distance from the concha to the helix. This design will prevent the sound output part 11 from fully accommodating the concha, affecting the wearing comfort and stability of the earphone 100. The earphone 100 may become unstable and even slip off during wear. In addition, an excessively small ninth distance D9 will result in an unreasonable size of the earphone 100, which may affect the sound propagation effect and lead to a poor sound quality experience.

[0195] If the ninth distance D9 is greater than 18mm, the shape of the earphone 100 will be too loose, and the distance between the sound output part 11 and the ear clip 13 will be too large. This will make it difficult for the sound output part 11 to adapt to the shape of the concha and completely fit into the concha. At the same time, the distance between the ear clip 13 and the back of the auricle 113 will be too large, making the earphone 100 unstable and potentially causing it to loosen or slip off during wear, affecting the wearing experience and the stability of the earphone 100. More seriously, an excessively large fifth distance S5 will result in an excessively long sound propagation path between the earphone 100 and the ear, causing the sound to not be effectively transmitted into the ear canal, resulting in reduced sound quality. Therefore, an excessively large ninth distance D9 will not only affect the wearing stability of the earphone 100 but may also cause sound attenuation and reduced transmission efficiency, affecting the final audio experience.

[0196] When the distance D9 is between 8mm and 18mm, it can ensure a good fit between the sound output part 11 and the concha cavity. The earphone 100 can maintain stable contact between the ear clip part 13 and the back of the auricle 113 to avoid slippage, and can also ensure that the sound output part 11 can effectively transmit sound, guaranteeing the clarity and accuracy of sound quality, while improving wearing comfort and stability.

[0197] Please see Figure 4 and Figure 5A This application provides an earphone 100, wherein when a user wears the earphone 100, the contact area between the ear clip 13 and the human ear is greater than or equal to 15mm. 2 and less than or equal to 35mm 2 .

[0198] Specifically, the contact area between the ear clip 13 and the human ear can be 15mm. 2 16mm 2 17mm 2 18mm 2 19mm 2 20mm 2 21mm 2 22mm 2 23mm 2 28mm 2 33mm 2 Or 35mm 2 The preferred value is 24mm. 2 The contact area between the ear clip 13 and the human ear can be 16mm. 2 ~33mm 2 Any value between; or, the contact area between the ear clip 13 and the human ear can be 17mm. 2 ~28mm 2 Any value between; or, the contact area between the ear clip 13 and the human ear can be 18mm. 2 ~23mm 2 Any value between; or, the contact area between the ear clip 13 and the human ear can be 19mm. 2 ~22mm 2 Any value between; or, the contact area between the ear clip 13 and the human ear can be 20mm. 2 ~21mm 2 Any value between.

[0199] If the contact area between the ear clip 13 and the human ear is less than 15mm 2 This can cause the pressure between the ear clip 13 and the ear to concentrate in a certain area of ​​the ear, making it impossible to distribute the pressure. Wearing it for a long time can cause discomfort, pain or irritation to the ear.

[0200] If the contact area between the ear clip 13 and the human ear is greater than 35mm 2 An excessively large contact area will increase the contact area between the ear clip 13 and the skin. Especially during exercise, the ear is prone to friction with the ear clip 13 for a longer period of time. The accumulation of sweat and the large contact area can cause the skin to feel stuffy, damp, or not breathable, causing discomfort or even allergic reactions, and affecting the overall wearing experience.

[0201] Therefore, the contact area between the ear clip 13 and the human ear is greater than or equal to 15 mm. 2 And less than or equal to 35mm 2 It can effectively balance the clamping force and comfort of the headphones, avoiding discomfort caused by excessive local pressure, and reducing the stuffiness and lack of breathability caused by excessive contact area, providing a more comfortable and stable wearing experience.

[0202] Please see Figure 4 and Figure 5A This application provides an earphone 100. When a user wears the earphone 100, the human ear is housed in the wearing space 101. The sound output part 11 and the hook-shaped part 133 respectively abut against the opposite sides of the human ear. The force exerted by the sound output part 11 and / or the hook-shaped part 133 on the human ear is greater than or equal to 0.03 Newtons and less than or equal to 3 Newtons.

[0203] Specifically, the force exerted by the sound-emitting part 11 and / or the hook-shaped part 133 on the human ear can be 0.03N, 0.1N, 0.2N, 0.5N, 0.8N, 1.0N, 1.2N, 1.5N, 2.0N, 2.4N, 2.7N or 3.0N. The force exerted by the sound-emitting part 11 and / or the hook-shaped part 133 on the human ear can be any value between 0.1N and 2.7N; or, the force exerted by the sound-emitting part 11 and / or the hook-shaped part 133 on the human ear can be any value between 0.2N and 2.4N; or, the force exerted by the sound-emitting part 11 and / or the hook-shaped part 133 on the human ear can be any value between 0.5N and 2.0N; or, the force exerted by the sound-emitting part 11 and / or the hook-shaped part 133 on the human ear can be any value between 0.8N and 1.5N; or, the force exerted by the sound-emitting part 11 and / or the hook-shaped part 133 on the human ear can be any value between 1.0N and 1.2N.

[0204] If the force exerted by the sound-emitting part 11 and / or the hook-shaped part 133 on the human ear is less than 0.03N, the force is too small, and the earphone 100 may not fit securely against the ear, resulting in unstable wearing, easy slippage or loosening, especially during vigorous exercise or rapid movement. The earphone 100 may fall off or shift, which not only affects the stability of wearing but also the sound quality, failing to achieve the desired sound effect. If the force exerted by the sound-emitting part 11 and / or the hook-shaped part 133 on the human ear exceeds 3N, the force is too large, which may cause excessive pressure on the earphone 100, and the wearer may feel discomfort or pain, affecting the wearing comfort.

[0205] The force exerted by the sound-emitting part 11 and / or the hook-shaped part 133 on the human ear is greater than or equal to 0.03N and less than or equal to 3N. The earphone 100 can maintain an appropriate force with the ear, which can ensure the stability of the earphone 100 while avoiding excessive pressure on the ear, ensuring wearing comfort and improving the wearing experience.

[0206] Please see Figure 4 , Figure 5A and Figure 14 This application provides an earphone 100, in which the back 113 is a flat surface when the user wears the earphone 100, and the fifth included angle α5 between the back 113 and the sagittal plane of the human body is greater than or equal to 5° and less than or equal to 25°.

[0207] Specifically, the fifth included angle α5 can be 5°, 6°, 7°, 8°, 9°, 10°, 12°, 15°, 17°, 19°, 22°, or 25°. Preferably, the fifth included angle α5 is 6°. The fifth included angle α5 can be any value between 6° and 22°; or, the fifth included angle α5 can be any value between 7° and 19°; or, the fifth included angle α5 can be any value between 8° and 17°; or, the fifth included angle α5 can be any value between 9° and 15°; or, the fifth included angle α5 can be any value between 10° and 12°.

[0208] If the fifth included angle α5 is less than 5°, the angle between the back surface 113 of the earphone 100 and the sagittal plane of the human body is too small. This necessitates increasing the size between the back surface 113 and the sound-emitting surface 111 of the earphone 100 to better adapt to the shape of the ear and ensure that the sound outlet 1111 can fit into the concha cavity. Increasing the size between the back surface 113 and the sound-emitting surface 111 will result in a larger overall size of the earphone 100, affecting its portability during wear and potentially causing discomfort after wearing the earphone 100. In particular, a larger earphone 100 may cause pressure on the auricle area during wear.

[0209] If the fifth included angle α5 is greater than 25°, the angle between the back of the earphone 100 113 and the ear is too large, which may cause the sound output part 11 of the earphone 100 to form a large gap with the auricle. This will make the earphone 100 unstable when worn, and the sound output part 11 may press on the tragus, causing discomfort to the wearer. It may also affect the stability of the earphone 100, making it easy for the earphone 100 to slip or fall off during wear, reducing the comfort and stability of wearing.

[0210] Therefore, in this embodiment, the value range of the fifth included angle α5 is greater than or equal to 5° and less than or equal to 25°. This can avoid the increase in the size of the earphone 100 and the discomfort caused by too small an included angle, and can also avoid the instability and pressure caused by too large an included angle. This ensures that the earphone 100 can fit comfortably in the ear while maintaining appropriate stability, avoiding discomfort during wearing and the problem of the earphone 100 falling off, and effectively improving the wearing experience and comfort.

[0211] Please see Figure 4 , Figure 5A and Figure 14 In some embodiments, when the user wears the headphones 100, the back surface 113 is curved, and the fifth included angle α5 between the tangent of the vertex of the projection of the back surface 113 in the first projection plane Pw and the sagittal plane of the human body is greater than or equal to 5° and less than or equal to 25°.

[0212] Specifically, the fifth included angle α5 can be 5°, 6°, 7°, 8°, 9°, 10°, 12°, 15°, 17°, 19°, 22°, or 25°. Preferably, the fifth included angle α5 is 6°. The fifth included angle α5 can be any value between 6° and 22°; or, the fifth included angle α5 can be any value between 7° and 19°; or, the fifth included angle α5 can be any value between 8° and 17°; or, the fifth included angle α5 can be any value between 9° and 15°; or, the fifth included angle α5 can be any value between 10° and 12°.

[0213] If the fifth included angle α5 is less than 5°, the angle is too small, which requires the size of the area between the back surface 113 and the sound outlet surface 111 of the earphone 100 to better fit the shape of the ear and ensure that the sound outlet 1111 can fit into the concha cavity. Increasing the size between the back surface 113 and the sound outlet surface 111 will make the overall size of the earphone 100 larger, affecting the portability when wearing it and possibly causing discomfort after wearing the earphone 100, especially if the earphone 100 is large, it may cause pressure on the auricle area during wearing.

[0214] If the fifth included angle α5 is greater than 25°, the included angle is too large, which may cause the sound output part 11 of the earphone 100 to form a large gap with the auricle, thus making the earphone 100 unstable when worn. The sound output part 11 may press on the tragus, causing discomfort to the wearer and may also cause sound leakage.

[0215] Therefore, in this embodiment, the fifth included angle α5 is greater than or equal to 5° and less than or equal to 25°, which can avoid the increase in the size of the earphone 100 and the discomfort caused by too small an included angle, and can also avoid the instability and pressure caused by too large an included angle. It can also ensure that the sound outlet 1111 and the concha cavity are aligned, with a small gap, and it is not easy to leak sound.

[0216] Please see Figure 4 , Figure 5A and Figure 15 This application provides an earphone 100, in which a hook-shaped part 133 has a first outer surface 1331 facing the sound output part 11. In a first projection plane Pw, the projection of the first outer surface 1331 has a nearest point NP of the projection facing the sound output part 11 in a first direction A1. The tenth distance D10 between the nearest point NP and the sound output part 11 is greater than or equal to 1 mm.

[0217] Specifically, the tenth distance D10 is the minimum distance between the nearest point NP and the sound output part 11. The tenth distance D10 can be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 3.7mm, 3.8mm, 3.9mm, 4.8mm, 5.8mm, or 7mm. Preferably, the tenth distance D10 is 3.5mm. The tenth distance D10 is any value greater than or equal to 1.5 mm; or, the tenth distance D10 is any value greater than or equal to 2 mm; or, the tenth distance D10 is any value greater than or equal to 2.5 mm; or, the tenth distance D10 is any value greater than or equal to 3 mm; or, the tenth distance D10 is any value greater than or equal to 3.5; or, the tenth distance D10 is any value greater than or equal to 3.7; or, the tenth distance D10 is any value greater than or equal to 3.8; or, the tenth distance D10 is any value greater than or equal to 3.9; or, the tenth distance D10 is any value greater than or equal to 4.8; or, the tenth distance D10 is any value greater than or equal to 5.8; or, the tenth distance D10 is any value greater than or equal to 7.

[0218] If the tenth distance D10 is less than 1mm, the hook-shaped part 133 may be too close to the sound outlet 11, which will require the ear clip part 13 to be pried open before wearing, causing the ear clip part 13 to deform frequently. Frequent deformation will accelerate the fatigue of the ear clip part 13 material, thereby affecting the service life of the headphone 100 and reducing the long-term stability and durability of the headphone 100.

[0219] The tenth distance D10 is greater than or equal to 1mm. The tenth distance D10 of this application meets this range regardless of whether the user wears the ear clip 13 or not. This allows it to match the ear thickness of most people, reducing the frequency and range of adjustment of the ear clip 13 when the user wears it, and extending the service life of the ear clip 13.

[0220] Please see Figure 4 , Figure 5A and Figure 15 In some implementations, when the user is wearing headphones 100, the tenth distance D10 is greater than or equal to 2mm.

[0221] Specifically, when the user is wearing headphones 100, the tenth distance D10 can be 2mm, 2.2mm, 2.5mm, 2.7mm, 3mm, 3.2mm, 3.5mm, 3.7mm, 4mm, 4.8mm, 5.8mm or 7mm. The tenth distance D10 is any value greater than or equal to 2.2 mm; or, the tenth distance D10 is any value between 2.5 mm and 2.5 mm; or, the tenth distance D10 is any value greater than or equal to 2.7 mm; or, the tenth distance D10 is any value greater than or equal to 3 mm; or, the tenth distance D10 is any value greater than or equal to 3.2 mm; or, the tenth distance D10 is any value greater than or equal to 3.5 mm; or, the tenth distance D10 is any value greater than or equal to 3.7 mm; or, the tenth distance D10 is any value greater than or equal to 4 mm; or, the tenth distance D10 is any value greater than or equal to 4.8 mm; or, the tenth distance D10 is any value greater than or equal to 5.8 mm; or, the tenth distance D10 is any value greater than or equal to 7 mm.

[0222] When a user wears the earphone 100, if the tenth distance D10 is less than 2mm, the distance between the hook-shaped part 133 and the auricle is too small, which may cause excessive pressure on the auricle from the first outer surface 1331. This could lead to pain in the auricle due to excessive pressure, affecting wearing comfort. Simultaneously, the tenth distance D10 may also affect the stability of the earphone 100, causing it to slip or loosen easily due to uneven pressure distribution, thus affecting the secure fit. A tenth distance D10 greater than or equal to 2mm ensures that the hook-shaped part 133 can firmly conform to the auricle, providing sufficient comfort while avoiding discomfort caused by excessive pressure or insufficient tightness.

[0223] Please see Figure 4 , Figure 5A and Figure 15 In some implementations, when the earphone 100 is not worn, the tenth distance D10 is less than or equal to 4 mm.

[0224] Specifically, when the earphone 100 is not worn, the tenth distance D10 can be 0mm, 1.2mm, 1.3mm, 1.5mm, 1.8mm, 2mm, 2.4mm, 2.6mm, 2.8mm, 3mm, 3.5mm, or 4mm. Preferably, when the earphone 100 is not worn, the tenth distance D10 is 3mm. The tenth distance D10 can be any value between 1.2mm and 3.5mm; or, the tenth distance D10 can be any value between 1.3mm and 3mm; or, the tenth distance D10 can be any value between 1.5mm and 2.8mm; or, the tenth distance D10 can be any value between 1.8mm and 2.6mm; or, the tenth distance D10 can be any value between 2mm and 2.4mm.

[0225] If the tenth distance D10 is too large (e.g., greater than 4mm) when the earphone 100 is not being worn, the gap between the hook-shaped part 133 and the sound outlet part 11 will be too large. This will require the user to apply extra force to press the ear clip 13 firmly to ensure contact between the earphone 100 and the ear. Prolonged pressure may cause frequent deformation of the ear clip 13, thus affecting the structural stability and lifespan of the earphone 100. An excessively large gap can also cause unstable wearing, especially during user movement, where the earphone 100 may slide unsteadily, increasing discomfort and even causing it to fall out.

[0226] When the earphone 100 is not worn, the tenth distance D10 is less than or equal to 4mm, which ensures that the earphone 100 can be worn without putting too much pressure on the ear, while still being stably fixed in the ear. The appropriate spacing ensures that the ear clip 13 can naturally surround the auricle, avoiding excessive deformation, providing a comfortable wearing experience, and ensuring the lifespan of the earphone 100.

[0227] Please see Figure 4 , Figure 5A and Figure 15 This application provides an earphone 100, with a reference line RE being a straight line parallel to the second direction A2 and passing through the vertex of the projection of the sound output surface 111 into the first projection plane Pw. The ratio between the tenth distance D10 and the eleventh distance D11 of the highest point and the reference line in the first direction A1 is greater than or equal to 0.25 and less than or equal to 0.5.

[0228] Specifically, the ratio between the tenth distance D10 and the eleventh distance D11 can be 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, 0.35, 0.38, 0.40, 0.45, 0.48, or 0.5. Preferably, the ratio is 0.38.

[0229] If the ratio between the tenth distance D10 and the eleventh distance D11 is less than 0.25, the distance between the first outer surface 1331 of the ear clip 11 and the reference line RE is relatively small, resulting in an excessively short sound propagation path. With a shorter propagation path, the sound may not be sufficiently reflected and scattered before entering the external auditory canal.

[0230] If the ratio between the tenth distance D10 and the eleventh distance D11 is greater than 0.5, the distance between the first outer surface 1331 of the ear clip 11 and the reference line RE is too large, resulting in an excessively long sound propagation path. The sound will attenuate to a certain extent during transmission. The excessively long propagation path not only reduces the transmission efficiency of the sound, but may also cause distortion of the sound quality, affecting the overall listening experience.

[0231] Therefore, the ratio between the tenth distance D10 and the eleventh distance D11 should be greater than or equal to 0.25 and less than or equal to 0.5. This ensures a suitable sound propagation path length, avoiding insufficient sound reflection and diffusion due to an excessively short path, and also preventing attenuation caused by an excessively long path. A suitable propagation path guarantees uniform sound propagation while maintaining a balance between low and high frequencies, improving sound quality and ensuring users receive a clear, full, and natural sound when wearing headphones.

[0232] Please see Figure 4 , Figure 5A and Figure 15 This application provides an earphone 100. In the second direction A2, the hook-shaped part 133 includes a second outer surface 1332 facing the connecting part 131. The second outer surface 1332 is connected to the first outer surface 1331. In the first projection plane Pw, the projection of the second outer surface 1332 has a first inflection point IP1 in the second direction A2 facing the connecting part 131. In the second direction A2, there is a twelfth distance D12 between the first inflection point IP1 and the projection of the back surface 113 in the first projection plane Pw. When the earphone 100 is not worn, the twelfth distance D12 is greater than or equal to 6 mm and less than or equal to 15 mm.

[0233] Specifically, the twelfth distance D12 can be 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 11.5mm, 12mm, 13mm, 13.1mm, 14mm, or 15mm, with a preferred value of 11.8mm. When the user wears the earphone 100, the second outer surface 1332 at least partially contacts the back of the auricle 113, thereby further securing the earphone 100 to the auricle. The twelfth distance D12 is any value between 6mm and 15mm; or, the twelfth distance D12 is any value between 7mm and 14mm; or, the twelfth distance D12 is any value between 8mm and 13.1mm; or, the twelfth distance D12 is any value between 9mm and 13mm; or, the twelfth distance D12 is any value between 10mm and 12mm; or, the twelfth distance D12 is any value between 11mm and 11.5mm.

[0234] If the earphone 100 is not being worn and the twelfth distance D12 is less than 6mm, then the twelfth distance D12 is too small. The hook-shaped part 133 will excessively compress the back of the auricle 113, causing discomfort to the auricle. Especially when worn for a long time, the auricle is subjected to excessive pressure, which may cause pain, indentation or even skin damage, affecting the comfort of wearing.

[0235] If the earphone 100 is not being worn and the twelfth distance D12 is greater than 15mm, then the twelfth distance D12 is too large, and the hook-shaped part 133 cannot effectively fit the back of the ear 113, resulting in the earphone 100 being unstable when worn, with insufficient clamping force, and it is easy to slip or fall off, affecting the stability and safety of wearing.

[0236] When the earphone 100 is not being worn, the twelfth distance D12 is greater than or equal to 6mm and less than or equal to 15mm, which can accommodate different ear thicknesses. This provides sufficient comfort and avoids excessive pressure on the ear, while ensuring that the earphone 100 fits the ear tightly, enhancing the stability and firmness of the fit, thus providing a longer and more stable wearing experience.

[0237] Please see Figure 4 , Figure 5A and Figure 15 In some implementations, when the user is wearing headphones 100, the twelfth distance D12 in the second direction A2 is greater than or equal to 7 mm and less than or equal to 16 mm.

[0238] Specifically, when the user is wearing headphones 100, the twelfth distance D12 can be 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 12.5mm, 13mm, 13.8mm, 14mm, 15mm, or 16mm. The twelfth distance D12 can be any value between 8mm and 15mm; or, the twelfth distance D12 can be any value between 9mm and 14mm; or, the twelfth distance D12 can be any value between 10mm and 13.8mm; or, the twelfth distance D12 can be any value between 11mm and 13mm; or, the twelfth distance D12 can be any value between 12mm and 12.5mm.

[0239] If the twelfth distance D12 is less than 7mm, the distance between the hook-shaped part 133 and the connecting part 131 is too small, which may result in insufficient wearing space 101, thereby compressing certain areas of the ear and increasing discomfort during wear. An excessively small distance may also affect the stability of the earphone 100, making it difficult for the earphone 100 to fit different ear shapes, leading to looseness or instability during wear, and even causing the earphone 100 to slip off or shift position. If the twelfth distance D12 is greater than 16mm, the excessive distance may prevent the earphone 100 from forming an effective fit with the ear during wear, resulting in an unstable fit. Especially during exercise or vigorous head movements, the earphone 100 may slip or fall off, thus reducing the stability and safety of the fit. By setting the value of the twelfth distance D12 when the user is wearing the headphones 100 to be greater than or equal to 7mm and less than or equal to 16mm, the wearing comfort and stability can be effectively balanced, ensuring that the headphones 100 can provide appropriate clamping force when the user wears them, while avoiding discomfort or instability caused by being too tight or too loose, thus improving wearing comfort and safety.

[0240] Please see Figure 4 , Figure 5A and Figure 15 This application provides an earphone 100, in which the projection of the second outer surface 1332 within the first projection plane Pw has a second inflection point IP2 in the second direction A2 that is directed toward the hook-shaped part 133. In the second direction A2, the thirteenth distance D13 between the first inflection point IP1 and the second inflection point IP2 is greater than or equal to 4 mm and less than or equal to 8 mm.

[0241] Specifically, the thirteenth distance D13 can be 4mm, 4.5mm, 4.6mm, 4.7mm, 5.2mm, 5.8mm, 5.9mm, 6.5mm, 7.1mm, 7.2mm, 7.7mm, or 8mm, with a preferred value of 5.8mm. The thirteenth distance D13 can be any value between 4.5mm and 7.7mm; or, the thirteenth distance D13 can be any value between 4.6mm and 7.2mm; or, the thirteenth distance D13 can be any value between 4.7mm and 7.1mm; or, the thirteenth distance D13 can be any value between 5.2mm and 6.5mm; or, the thirteenth distance D13 can be any value between 5.8mm and 5.9mm.

[0242] If the distance D13 is less than 4mm, the hook part 133 will make too close contact with the ear, which may put too much pressure on the ear. Especially after wearing it for a long time, the excessive local pressure will cause discomfort and affect the wearing comfort.

[0243] If the distance D13 is greater than 8mm, the excessive distance will result in an excessively large wearing space 101 and an excessively large gap between the auricle and the wearing space 101, leading to an unstable fit and the possibility of the earphone 100 sliding or falling off.

[0244] The thirteenth distance D13 is greater than or equal to 4mm and less than or equal to 8mm, which ensures that the earphone 100 has sufficient contact area with the ear when worn, providing uniform clamping force. This avoids discomfort caused by local pressure and controls the gap between the auricle and the wearing space 101, ensuring both a secure fit and comfortable wear.

[0245] Please see Figure 4 , Figure 5A and Figure 15 This application provides an earphone 100, in which the hook-shaped part 133 further includes a third outer surface 1333. The third outer surface 1333 is opposite to the second outer surface 1332 in the second direction A2. The first outer surface 1331 is connected to the second outer surface 1332 and the third outer surface 1333. In the first projection plane Pw and in the second direction A2, there is a first maximum distance D14 between the projection of the third outer surface 1333 and the projection of the back surface 113. When the earphone 100 is not worn, the value of the first maximum distance D14 is greater than or equal to 9mm and less than or equal to 18mm.

[0246] Specifically, when the earphone 100 is not being worn, the first maximum distance D14 can be 9mm, 10mm, 11mm, 12mm, 13mm, 13.5mm, 14mm, 15mm, 15.3mm, 16mm, 17mm, or 18mm, with a preferred value of 16.5mm. The first maximum distance D14 can be any value between 10mm and 17mm; or, the first maximum distance D14 can be any value between 11mm and 16mm; or, the first maximum distance D14 can be any value between 12mm and 15.3mm; or, the first maximum distance D14 can be any value between 13mm and 14mm; or, the first maximum distance D14 can be any value between 13.5mm and 13.5mm.

[0247] If the earphone 100 is not worn, and the first maximum distance D14 is less than 9mm, and the distance between the third outer surface 1333 and the back surface 113 is too small, the wearing space 101 may be too small in the second direction A2. This could result in the earphone 100 exerting excessive clamping force on the auricle when worn, causing excessive local pressure on certain parts of the auricle. Prolonged wear may cause discomfort and reduce wearing comfort. Furthermore, due to the excessive clamping force, the earphone 100 may become difficult to adjust, making it difficult to adapt to individual differences in the user's ear, thus affecting the flexibility and adaptability of wearing the earphone 100.

[0248] If the earphone 100 is not being worn, and the first maximum distance D14 is greater than 18mm, and the distance between the third outer surface 1333 and the back surface 113 is too large, the wearing space 101 may be too large in the second direction A2. This would reduce the tightness of the contact between the earphone 100 and the ear, and the earphone 100 may not be securely fixed to the ear. It may slip or shift during wear, causing instability and reducing the safety and comfort of wearing it. In addition, an excessive distance may cause the shape of the earphone 100 to not conform to the natural curve of the human ear, further affecting the fit during wear, resulting in unstable or uncomfortable wear.

[0249] When the earphone 100 is not being worn, the first maximum distance D14 is greater than or equal to 9mm and less than or equal to 18mm. This can effectively balance the comfort and stability of the earphone 100, maintain an appropriate contact distance between the earphone 100 and the auricle, ensure that there is no discomfort due to excessive pressure when wearing it, and also avoid unstable wearing due to insufficient contact, thereby improving the stability, comfort and safety of wearing it.

[0250] Please see Figure 4 , Figure 5A and Figure 15In some implementations, when the user is wearing headphones 100, the first maximum distance D14 is greater than or equal to 10mm and less than or equal to 19mm.

[0251] Specifically, when the user is wearing headphones 100, the first maximum distance D14 can be 10mm, 11mm, 12mm, 12.8mm, 13mm, 14mm, 15mm, 15.2mm, 16mm, 17mm, 18mm, or 19mm. The first maximum distance D14 can be any value between 11mm and 18mm; or, the first maximum distance D14 can be any value between 12mm and 17mm; or, the first maximum distance D14 can be any value between 12.8mm and 16mm; or, the first maximum distance D14 can be any value between 13mm and 15.2mm; or, the first maximum distance D14 can be any value between 14mm and 15mm.

[0252] If the first maximum distance D14 is less than 10mm when the user is wearing the headphones 100, this excessive distance may cause the third outer surface 1333 of the hook-shaped part 133 to be too close to the back of the ear, thereby increasing the pressure of the headphones 100 on the back of the ear and causing discomfort to the wearer. Prolonged wear may cause local pressure pain or irritation, and even lead to skin redness or inflammation, affecting wearing comfort. In addition, an excessively small distance may also weaken the support of the headphones 100, resulting in insufficient security when wearing them, increasing the risk of the headphones 100 falling off or shifting, and reducing the stability and safety of wearing them.

[0253] If the first maximum distance D14 is greater than 19mm when the user is wearing the headphones 100, this excessive distance may prevent the headphones 100 from forming a good fit with the ear, especially during exercise, where the headphones 100 may become unstable. A distance greater than 19mm results in insufficient contact between the headphones 100 and the ear, increasing the probability of the headphones 100 slipping or falling out, leading to discomfort and insecurity. By setting the value of the first maximum distance D14 when the user is wearing the headphones 100 to be greater than or equal to 10mm and less than or equal to 19mm, proper contact between the headphones 100 and the ear can be effectively ensured during wear, thereby ensuring stability and comfort. An appropriate distance avoids discomfort caused by excessive pressure on the ear, while maintaining the stability and safety of the headphones 100 during wear, especially during exercise or prolonged wear, improving the wearing experience and safety of the headphones 100.

[0254] Please see Figure 4 , Figure 5A and Figure 15This application provides an earphone 100, in which the projection of the second outer surface 1332 in the first projection plane Pw has a second inflection point IP2 that is projected toward the hook-shaped part 133 in the second direction A2, and the second maximum distance D15 between the projection of the third outer surface 1333 and the second inflection point IP2 in the first projection plane Pw and in the second direction A2 is greater than or equal to 1 mm and less than or equal to 5 mm.

[0255] Specifically, the second maximum distance D15 can be 1.1mm, 1.2mm, 1.3mm, 2.1mm, 2.2mm, 2.4mm, 2.5mm, 3.3mm, 3.4mm, 4.3mm, 4.4mm, or 5mm. The second maximum distance D15 can be any value between 1.2mm and 4.4mm; or, the second maximum distance D15 can be any value between 1.3mm and 4.3mm; or, the second maximum distance D15 can be any value between 2.1mm and 3.4mm; or, the second maximum distance D15 can be any value between 2.2mm and 3.3mm; or, the second maximum distance D15 can be any value between 2.4mm and 2.5mm.

[0256] If the second maximum distance D15 is less than 1mm, the distance between the third outer surface 1333 and the surface of the connecting part 131 located in the wearing space 101 is too small, which may cause the earphone 100 to contact the ear too tightly during wearing, resulting in greater local pressure. Prolonged wearing may cause discomfort and reduce wearing comfort. At the same time, too small a distance may also affect the adjustability of the earphone 100, making it difficult to adapt to different users' ear structures, resulting in unstable wearing or difficulty in adjusting to the most comfortable position.

[0257] If the second maximum distance D15 is greater than 5mm, the distance between the third outer surface 1333 and the surface of the connecting part 131 located in the wearing space 101 is too large. The gap between the auricle and the wearing space 101 becomes larger, and the earphone 100 may not be able to make sufficient contact with the ear during wearing, resulting in insufficient clamping force of the earphone 100. The earphone 100 may slip or become unstable, increasing the risk of insecure wearing and affecting the safety and comfort of wearing.

[0258] The second maximum distance D15 is greater than or equal to 1mm and less than or equal to 5mm. This ensures that the earphone 100 fits the ear comfortably while avoiding discomfort caused by excessive local pressure. It also prevents unstable wearing due to excessive gap between the auricle and the wearing space 101. This allows the earphone 100 to maintain appropriate clamping force and provides a more stable and comfortable wearing experience.

[0259] Please see Figure 4 , Figure 5A and Figure 15In some embodiments, when the earphone 100 is not worn, the ratio between the twelfth distance D12 and the first maximum distance D14 is greater than or equal to 0.6 and less than or equal to 0.85.

[0260] Specifically, the ratio between the twelfth distance D12 and the first maximum distance D14 can be 0.6, 0.65, 0.7, 0.715, 0.75, 0.8, or 0.85, preferably 0.715.

[0261] If the ratio between the twelfth distance D12 and the first maximum distance D14 is less than 0.6, the design between the hook-shaped sub-part 133 and the connecting sub-part 131 is too tight, which may result in the wearing space 101 of the earphone 100 being too small, thus affecting wearing comfort. In this case, the earphone 100 may exert excessive pressure on the auricle, causing discomfort after prolonged wear, and even causing ear pressure pain or irritation. In addition, an excessively small ratio may cause the earphone 100 to be unstable when worn, increasing the risk of the earphone 100 slipping or shifting, and reducing the stability and safety of wearing.

[0262] If the ratio between the twelfth distance D12 and the first maximum distance D14 is greater than 0.85, the distance between the hook-shaped part 133 and the connecting part 131 is too large, resulting in an excessively wide wearing space 101. While this may improve comfort, it also reduces the support of the earphone 100 for the auricle, causing instability. In this case, the clamping force of the earphone 100 is insufficient, which may lead to unstable wearing, or even cause the earphone 100 to easily slip or fall off during exercise or strenuous activity, affecting the stability and safety of the wearing.

[0263] The ratio between the twelfth distance D12 and the first maximum distance D14 is greater than or equal to 0.6 and less than or equal to 0.85, which balances the wearing comfort and stability of the earphone 100. This design ensures that the earphone 100 is neither too tight to the ear, causing discomfort, nor too wide, reducing the clamping force, thus providing a more stable and comfortable wearing experience, adapting to different ear shapes and wearing needs, and improving the stability and safety of wearing.

[0264] Please see Figure 4 , Figure 5A and Figure 15 When the user is wearing headphones 100, the ratio between the twelfth distance D12 and the first maximum distance D14 is greater than or equal to 0.65 and less than or equal to 0.9.

[0265] Specifically, in some embodiments, when the user is wearing headphones 100, the ratio between the twelfth distance D12 and the first maximum distance D14 can be 0.65, 0.68, 0.70, 0.72, 0.74, 0.76, 0.78, 0.80, 0.85 or 0.9, with a preferred value of 0.715.

[0266] If, when the user is wearing the earphone 100, the ratio between the twelfth distance D12 and the first maximum distance D14 is less than 0.66, the distance between the third outer surface 1333 of the hook-shaped part 133 and the connecting part 131 may be too small. This could cause the earphone 100 to exert excessive pressure on the back of the ear when worn, making the wearer feel uncomfortable. Excessive pressure may cause redness, swelling, irritation, or even discomfort of the ear skin. Long-term wear may affect wearing comfort, and the earphone 100 may not fit securely in the ear, reducing its stability and increasing the risk of slipping or displacement.

[0267] If the ratio between the twelfth distance D12 and the first maximum distance D14 is greater than 0.9 when the user is wearing the headphones 100, the distance between the third outer surface 1333 and the back may be too large, causing the headphones 100 to not make good contact with the ear, resulting in the headphones 100 being unstable when worn, especially during exercise, which may cause the headphones 100 to slip or fall off, increasing the instability of wearing them.

[0268] By controlling the ratio between the twelfth distance D12 and the first maximum distance D14 when the user is wearing the headphones 100 to between 0.65 and 0.9, it is possible to ensure that the contact force between the hook-shaped part 133 and the ear is moderate, avoiding excessive pressure while ensuring the stability of the headphones 100. A reasonable ratio not only helps improve wearing comfort and reduce discomfort, but also enhances the stability of the headphones 100 during various activities, especially sports, ensuring a more stable and comfortable wearing experience, reducing the risk of them falling out or shifting, and improving the user experience.

[0269] Please see Figure 4 and Figure 5A In some embodiments, the housing 10 is provided with a receiving cavity 102, and the earphone 100 also includes a circuit board 30, a communication unit 40 and a battery 50. The circuit board 30 and the battery 50 are housed in the receiving cavity 102, and the communication unit 40 is disposed in the sound output part 11. The communication unit 40, the battery 50 and the speaker 20 are all electrically connected to the circuit board 30. The circuit board 30, the battery 50 and the speaker 20 are stacked sequentially in the direction from the back surface 113 of the housing 10 to the sound output surface 111.

[0270] The circuit board 30, battery 50, and speaker 20 are stacked sequentially from the back 113 of the housing 10 to the sound outlet 111, which saves space and allows for a reasonable layout of the components, making the headphone 100 compact overall. At the same time, the components are concentrated in the sound outlet 11, and the weight is concentrated in the part of the headphone 100 that is worn into the concha, so the ear clip 13 is less likely to slip off.

[0271] In the description of this specification, the references to terms such as "some embodiments," "in one example," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0272] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An earphone, characterized in that, include: The housing includes a sound-emitting part and an ear clip. The sound-emitting part houses a speaker and a battery, which are electrically connected. The ear clip includes a connecting part and a hook-shaped part, with the connecting part connecting between the sound-emitting part and the hook-shaped part. When the user wears the headphones, the sound-emitting part is configured to be at least partially located within the user's concha. The ear clip extends through the antihelix and the helix to the space between the auricle and the head. The hook-shaped part first extends away from the sound-emitting part and then bends and extends towards the sound-emitting part so that the shell forms a wearing space for accommodating the auricle of the human body.

2. The earphone according to claim 1, characterized in that, The sound-emitting part includes a sound-emitting surface, and the hook-shaped sub-part has a width-shaping surface Pw. Within the first projection surface Pw where the width-shaping surface Pw is located, the common tangent of the projection of the sound-emitting surface and the projection of the outer surface of the hook-shaped sub-part and the tangent points of the projection of the sound-emitting surface and the projection of the outer surface of the hook-shaped sub-part are respectively the first tangent point Q1 and the second tangent point Q2. The projection of the housing has an outer envelope line, and the outer envelope line includes a first segment. The first segment extends from the first tangent point Q1 along the first envelope direction R1 to the second tangent point Q2. The first segment and the common tangent line together form a first surface P1. The area S1 of the first surface P1 is greater than or equal to 300 mm². 2 and less than or equal to 1000mm 2 .

3. The earphone according to claim 2, characterized in that, The earphone includes a first side and a second side opposite to each other in a first direction A1. The sound-emitting part is located on the first side of the earphone, and the ear clip is located on the second side of the earphone. The sound-emitting part includes a back side opposite to the sound-emitting surface in a second direction A2. The sound-emitting surface is provided with a sound-emitting hole, which is used to allow the sound emitted by the speaker to pass through to the outside of the sound-emitting part. The first direction A1 is perpendicular to the second direction A2.

4. The earphone according to claim 3, characterized in that, Within the first projection plane Pw where the width dividing plane Pw is located, the projection of the ear clip includes an inner contour and an outer contour. The outer contour has a protrusion BP, which is the point of the ear clip that is farthest from the sound outlet in the first direction A1. The inner contour has a concave point CP, which is located within the wearing space.

5. The earphone according to claim 4, characterized in that, The outer surfaces of the sound-emitting surface and the hook-shaped part are both curved surfaces. The outer envelope also includes a second segment connected to the first segment. The second segment extends from the first tangent point Q1 along the second envelope direction R2 to the second tangent point Q2. The first envelope direction R1 and the second envelope direction R2 are opposite. The second segment and the common tangent together form the second surface P2. The area S2 of the second surface P2 is greater than or equal to 60 mm. 2 and less than or equal to 150mm 2 ; The ratio of the area S2 of the second face P2 to the area S1 of the first face P1 is greater than or equal to 0.1 and less than or equal to 0.

5.

6. The earphone according to claim 5, characterized in that, The area S1 of the first surface P1 is 400 mm². 2 ~950mm 2 Any value between mm; or, the area S1 of the first surface P1 is 480 mm. 2 ~900mm 2 Any value between mm; or, the area S1 of the first surface P1 is 500 mm. 2 ~800mm 2 Any value between mm; or, the area S1 of the first surface P1 is 550 mm. 2 ~780mm 2 Any value between mm; or, the area S1 of the first surface P1 is 600 mm. 2 ~700mm 2 Any value between mm.

7. The earphone according to claim 4, characterized in that, Within the first projection plane Pw, the centroid of the sound outlet has a projection center C, and the protrusion BP and the projection center C have a fourth distance D4 in the first direction A1, wherein the fourth distance D4 is greater than or equal to 20mm and less than or equal to 35mm. And / or, the length L1 of the earphone in the first direction A1 is greater than or equal to 15mm and less than or equal to 30mm; And / or, the height H of the earphone in the second direction A2 is greater than or equal to 17mm and less than or equal to 28mm.

8. The earphone according to claim 7, characterized in that, The fourth distance D4 is any value between 22mm and 33mm; or, the fourth distance D4 is any value between 24mm and 32mm; or, the fourth distance D4 is any value between 26mm and 31mm; or, the fourth distance D4 is any value between 27mm and 30mm; or, the fourth distance D4 is any value between 27.5mm and 28mm.

9. The earphone according to claim 7, characterized in that, The length L1 is any value between 16mm and 29mm; or, the length L1 is any value between 17mm and 28mm; or, the length L1 is any value between 18mm and 23mm; or, the length L1 is any value between 19mm and 22mm; or, the length L1 is any value between 20mm and 21mm. And / or, the height H of the earphone 100 in the second direction A2 is any value between 18mm and 25mm; or, the height H of the earphone 100 in the second direction A2 is any value between 19mm and 24mm; or, the height H of the earphone 100 in the second direction A2 is any value between 20mm and 23.4mm; or, the height H of the earphone 100 in the second direction A2 is any value between 20.4mm and 23mm; or, the height H of the earphone 100 in the second direction A2 is any value between 21mm and 22mm.

10. A headphone system, characterized in that, include: The headphones according to any one of claims 1-9; and A charging case for charging the earphones.

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