Connection arm, wireless earphone monomer and wireless open earphone

Abstract

The application belongs to the technical field of earphones, and particularly relates to a connecting arm, a wireless earphone monomer and a wireless open earphone. The connecting arm comprises an arm body and a protective layer. The arm body is internally provided with a first threading hole, and a core wire is threaded in the first threading hole. The arm body is connected with a first earphone body and a second earphone body of the wireless open earphone through the core wire. The protective layer surrounds the arm body and covers the outer side surface of the arm body. The protective layer can cover the arm body and effectively protect the structure of the arm body. During a long-term deformation process of bending, stretching and the like of the connecting arm, the protective layer can disperse part of stress and reduce fatigue damage of the arm body caused by repeated deformation. The protective layer can also reduce exposure of the arm body and delay the aging speed of the arm body, so as to reduce the risk of cracking of the arm body. Even if the arm body is aged and cracked, the arm body will not be directly exposed due to the fact that the protective layer can cover the arm body, so that the influence of the aging and cracking of the arm body on the appearance of the connecting arm can be reduced.

Description

Technical Field

[0001] This application relates to the field of headphone technology, and in particular to a connecting arm, a wireless headphone driver, and a wireless open-back headphone. Background Technology

[0002] Wireless open-back headphones, because they don't need to be inserted deep into the ear canal, keep the ear canal open during wear, effectively avoiding discomfort such as ear canal swelling and stuffiness that can easily occur after prolonged wear. They balance comfort and the need for ambient sound perception, making them widely popular among consumers. However, in related technologies, the connecting arms of wireless open-back headphones are prone to aging and even cracking after long-term use, affecting the overall appearance of the headphones. Utility Model Content

[0003] This application provides a connecting arm, a wireless earphone unit, and a wireless open-back earphone, which can reduce the impact of aging and cracking of the connecting arm on the overall appearance of the wireless open-back earphone.

[0004] Firstly, a connecting arm is provided for use in wireless open-back headphones, including:

[0005] The arm body has a first wire hole, the length of which extends along the length of the arm body. A core wire is threaded through the first wire hole, and the arm body is connected to the first and second earpieces of the wireless open-back earphone through the core wire.

[0006] A protective layer surrounds the arm body and covers the outer surface of the arm body.

[0007] The connecting arm provided in this embodiment has a protective layer on its outer surface. This protective layer covers the arm body and provides effective structural protection. During long-term bending and stretching deformations, the protective layer disperses some stress, reducing fatigue damage caused by repeated deformation. The protective layer also reduces arm exposure, slowing down the aging process and lowering the risk of cracking. Even if cracks do occur, the protective layer prevents direct exposure, minimizing the impact of aging and cracking on the arm's appearance. This ensures the structural integrity and aesthetics of the connecting arm after long-term use, thus maintaining the overall appearance of the wireless open-back headphones.

[0008] In one possible implementation, the protective layer is a braided layer made of at least one braided thread.

[0009] The protective layer wraps around the arm, creating a physical barrier between the arm and the external environment, significantly reducing the area of ​​the arm directly exposed to the outside world. Since the arm is typically made of thermoplastic polyurethane (TPU), silicone, or other polymer materials, these materials are prone to static electricity buildup due to friction, attracting dust, lint, and other fine impurities from the air. The protective layer effectively reduces direct contact between the arm and external impurities, lowering the probability of static electricity adsorption and making it easier to keep the wireless earphone unit clean during daily use.

[0010] Furthermore, the protective layer is woven from one or more braided threads using a specific process, allowing for highly customizable appearance. For example, different colored braided threads (such as monochrome, mixed colors, gradient colors, etc.) can be used to change the overall tone of the protective layer, adapting to different product design styles; the material of the braided threads (such as nylon, polyester, metallic wire, or natural fibers, etc.) can be adjusted to give the protective layer different textures (such as smooth, matte, metallic luster, etc.); the braiding density can be changed (from sparse to dense) to give the protective layer a visual effect ranging from transparent to thick; in addition, the braiding method can be adjusted to create diverse textures (such as grid patterns, stripes, waves, or customized patterns). By combining and adjusting the above parameters, the surface of the connecting arm can present a rich variety of colors and textures, significantly improving the appearance of the wireless earphone unit and meeting the personalized needs of different users.

[0011] Through the above settings, the protective layer can reduce the impact of aging and cracking of the arm body on the appearance of the connecting arm, ensuring the structural integrity and aesthetics of the connecting arm after long-term use; it can also reduce the probability of the connecting arm absorbing impurities, making it easier to keep the wireless earphone unit clean during daily use; in addition, by adjusting the color, material, braiding density and braiding method of the braided wire, the protective layer can present a rich variety of colors and textures, significantly improving the appearance of the wireless earphone unit and meeting the personalized needs of different users.

[0012] In one possible implementation, the braided layer has a uniform braid density; or,

[0013] The weave density of one region of the braided layer is less than the weave density of another region of the braided layer.

[0014] A uniformly dense braided layer allows the braided threads to form a regular and consistent stress network on the surface of the arm. When the connecting arm is subjected to external forces such as bending and stretching, the stress can be dispersed through the uniformly distributed braided threads, reducing stress concentration and lowering the risk of braided layer tearing or localized damage to the arm. Simultaneously, the uniform structure ensures that the deformation amplitude and recovery force remain consistent across all areas during repeated deformation, reducing the risk of stiffness due to excessive density in certain areas and excessive stretching due to sparse density, thus maintaining the overall structural stability and service life of the connecting arm.

[0015] The weaving density in some areas of the braided layer is lower than that in other areas, and the braided layer varies from sparse to dense in different areas. This allows the braided layer to achieve a visual effect that changes from transparent to thick, which can enhance the aesthetics and quality of the connecting arm.

[0016] In one possible implementation, the protective layer avoids the end face of the arm body.

[0017] A protective layer can be woven around the arm body using braiding equipment. If the protective layer covers the end face of the arm body, the corner transition between the end face and the side face requires precise control of the direction and tension of the braided yarn at the corner to reduce problems such as yarn accumulation, wrinkles, or missed weaves, significantly increasing the difficulty of the weaving process. By avoiding the end face of the arm body and weaving only the outer side, the corner between the end face and the outer side can be avoided, reducing the need to handle complex corners and lowering the overall weaving difficulty.

[0018] In one possible implementation, the end face of the protective layer is aligned with the end face of the arm body.

[0019] When the end face of the protective layer is aligned with the end face of the arm body, there is no situation where the protective layer extends beyond or retracts from the end face of the arm body. In this way, when processing the connecting arm, the excess part of the protective layer and the end face of the arm body can be removed directly with a cutter at the same time, which is helpful for mass production of connecting arms.

[0020] In one possible implementation, one end of the protective layer is provided with a first connecting portion, which is used to be disposed in the first earphone body; and / or, the other end of the protective layer is provided with a second connecting portion, which is used to be disposed in the second earphone body.

[0021] The first connecting portion of the protective layer is disposed within the first earphone body. That is, after the connecting arm is assembled with the first earphone body, the edge area of ​​the protective layer can be hidden within the first earphone body, thereby improving the appearance of the wireless earphone unit. In addition, it can reduce or avoid the situation where relative displacement or loosening between the protective layer and the first earphone body occurs during repeated deformation of the connecting arm or long-term use, resulting in the arm being exposed, so as to ensure that the protective layer can stably perform its protective function for the arm body.

[0022] The second connecting portion of the protective layer is designed to be housed within the second earphone body. This means that after the connecting arm and the second earphone body are assembled, the edge area of ​​the protective layer can be hidden within the second earphone body, thus improving the appearance of the wireless earphone unit. Furthermore, this design reduces or prevents relative displacement or loosening between the protective layer and the second earphone body during repeated deformation of the connecting arm or long-term use, ensuring that the protective layer can stably protect the arm body.

[0023] In one possible implementation, the arm body is a flexible component, and a second threading hole is provided inside the arm body. The length of the second threading hole extends along the length direction of the arm body, and a deformable component is provided inside the second threading hole. The deformable component can deform to cause deformation of the arm body and the protective layer.

[0024] By designing the arm as a flexible component, the arm itself possesses a certain degree of deformation capability. When the user's ear is pressed against the connecting arm, the arm can deform to a certain extent, reducing the discomfort caused by external pressure on the user's ear. However, relying solely on the deformation properties of the arm's own material can easily lead to problems such as uncertain deformation direction or excessive deformation. By inserting a deformable component into the second threaded hole of the arm, the active deformation of the deformable component (such as bending and stretching) can guide the arm to deform in a preset direction and amplitude, thus ensuring the shape of the connecting arm.

[0025] In one possible implementation, at least one end of the deformable member is provided with a bent portion, the bent portion being located outside the arm body, and the bent portion being able to abut against the end face of the arm body and / or the protective layer.

[0026] Understandably, the deformable component, inserted into the second threaded hole of the arm body, is prone to shifting along the length of the arm body during long-term stress deformation or vibration, affecting its control over the arm body's deformation. However, by providing a bent portion at the end of the deformable component, the reaction force from the bent portion against the end face of the arm body or protective layer restricts the component's movement relative to the arm body along its length, preventing it from detaching from the second threaded hole or extending excessively. This ensures the deformable component remains in its preset working position, guaranteeing stable control over the arm body's deformation.

[0027] In one possible implementation, an adhesive layer is provided between the protective layer and the arm body.

[0028] When the protective layer is only attached to the arm body by wrapping around it, gaps can easily form between the two due to relative sliding during repeated deformation of the connecting arm. This can lead to wrinkling, displacement, or even partial detachment of the protective layer, affecting its protective effect on the arm body. The adhesive layer, however, provides continuous bonding force, firmly bonding the protective layer to the arm body and reducing relative movement between layers, ensuring the protective layer always tightly wraps the arm body. The adhesive layer connects the protective layer and the arm body into a single unit. When the connecting arm is subjected to bending, tensile, or other external forces, these forces can be transmitted more evenly between the protective layer and the arm body through the adhesive layer, reducing localized stress concentration caused by layer separation. Simultaneously, the reinforcing properties of the protective layer (such as tear resistance and anti-aging properties) can be more effectively applied to the arm body through the adhesive layer, improving the overall deformation resistance and structural reliability of the connecting arm. Furthermore, since the protective layer is formed by braiding, the adhesive layer can bond the braided threads, ensuring a tight fit between them and reducing the possibility of loosening and unraveling of the protective layer.

[0029] In one possible implementation, the outer side of the arm body is provided with a first textured pattern, and the protective layer is provided with a second textured pattern on one side facing the arm body, wherein the first textured pattern and the second textured pattern are interlocked.

[0030] A first textured pattern is set on the outer side of the arm body, and a second textured pattern is set on the side of the protective layer. The first and second textured patterns are interlocked, which can increase the friction between the arm body and the protective layer and reduce the displacement of the two, thus preventing damage to the appearance of the connecting arm. In addition, it can also increase the connection stability between the arm body and the protective layer and ensure the quality of the connecting arm.

[0031] In one possible implementation, the fastener is located at the end of the arm body and wraps around the edge of the protective layer, with the end of the core wire located outside the fastener.

[0032] The fastener is installed at the end of the arm and wraps around the edge of the protective layer. The fastener can fix the edge area of ​​the protective layer and reduce the risk of delamination between the edge of the protective layer and the arm.

[0033] In addition, in some embodiments, the protective layer is a braided layer made of braided yarn. The fastener is set at the end of the arm body and wraps around the edge of the protective layer. The fastener can fix the edge area of ​​the protective layer and reduce the possibility of the braided layer coming loose.

[0034] In one possible implementation, the fastener is provided with a first fastening member for fastening connection with the first earphone body, or the first fastening member for fastening connection with the second earphone body.

[0035] A first fastening element is provided on the fixing component, which can be fastened to the first or second earphone body through the first fastening element, thereby improving the connection stability between the connecting arm and the first or second earphone body.

[0036] Secondly, a wireless earphone unit is provided, comprising a first earphone body, a second earphone body, and the aforementioned connecting arm, wherein the two ends of the connecting arm are respectively connected to the first earphone body and the second earphone body.

[0037] Since the connecting arm in any of the above embodiments can reduce the impact of aging and cracking on the appearance of the connecting arm, ensuring the structural integrity and aesthetics of the connecting arm after long-term use, and the protective layer can present a rich variety of colors and textures, the wireless earphone unit containing this connecting arm has a good appearance. In addition, the protective layer of the connecting arm can also reduce the probability of the connecting arm adsorbing impurities. Therefore, the wireless earphone unit containing this connecting arm is easier to keep clean in daily use.

[0038] In one possible implementation, the first earphone body is provided with a first connection hole, the end of the connecting arm is disposed within the first connection hole, and the wall of the first connection hole abuts against the first connecting portion of the protective layer of the connecting arm; and / or,

[0039] The second earphone body is provided with a second connection hole, the end of the connecting arm is disposed in the second connection hole, and the hole wall of the second connection hole abuts against the second connection part of the protective layer.

[0040] The end of the connecting arm is positioned within the first connecting hole. The wall of the first connecting hole abuts against the first connecting portion of the protective layer of the connecting arm. The first connecting hole and the connecting arm can form an interference fit. The wall of the first connecting hole can compress the connecting arm, thus assembling the first earphone body with the connecting arm. The first connecting portion is the edge area of ​​the protective layer. The wall of the first connecting hole abuts against the first connecting portion of the protective layer of the connecting arm, and the wall of the first connecting hole can press the edge area of ​​the protective layer tightly, reducing the possibility of the protective layer becoming frayed during use.

[0041] The end of the connecting arm is positioned within the second connecting hole. The wall of the second connecting hole abuts against the second connecting portion of the protective layer of the connecting arm. The second connecting hole and the connecting arm can form an interference fit. The wall of the second connecting hole can compress the connecting arm, thus assembling the second earphone body with the connecting arm. The second connecting portion is the edge area of ​​the protective layer. The wall of the second connecting hole abuts against the second connecting portion of the protective layer of the connecting arm. The wall of the first connecting hole can press firmly against the edge area of ​​the protective layer, reducing the possibility of the protective layer becoming frayed during use.

[0042] In one possible implementation, the first earphone body is provided with a second fastening member, which is fastened to the first fastening member of the connecting arm; and / or

[0043] The second earphone body is provided with a third fastening component, which is fastened and connected to the first fastening component.

[0044] A second fastening component is provided in the first earphone body. The second fastening component can be connected to the first fastening component of the connecting arm. In this way, the connection strength between the connecting arm and the first earphone body can be improved, thereby improving the assembly stability of each component of the wireless earphone unit and improving the quality of the wireless earphone unit.

[0045] A third fastening component is provided in the second earphone body. The third fastening component can be connected to the first fastening component of the connecting arm. In this way, the connection strength between the connecting arm and the second earphone body can be improved, thereby improving the assembly stability of each component of the wireless earphone unit and improving the quality of the wireless earphone unit.

[0046] Thirdly, a wireless open-back headphone is provided, comprising a charging case and the aforementioned wireless headphone unit, wherein the charging case is used to store the wireless headphone unit.

[0047] Since the wireless earphone unit in any of the above embodiments has a good appearance, the wireless open-back earphone containing this wireless earphone unit has a good appearance; in addition, since the wireless earphone unit can be kept clean during daily use, the earphone case of the wireless open-back earphone containing this wireless earphone unit is not prone to dust accumulation. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the structure of a wireless open-back headset provided in an embodiment of this application.

[0049] Figure 2 This is a schematic diagram of the structure of a wireless earphone unit provided in an embodiment of this application.

[0050] Figure 3 A schematic diagram of the connection structure of the connecting arm, the first housing, and the third housing provided in an embodiment of this application.

[0051] Figure 4for Figure 3 The diagram shows a cross-sectional view of the connection structure of the connecting arm, the first housing, and the third housing.

[0052] Figure 5 This is a schematic diagram of the connecting arm provided in an embodiment of this application.

[0053] Figure 6 for Figure 5 The diagram shows a cross-sectional view of the connecting arm.

[0054] Figure 7 A schematic diagram of the structure of a connecting arm provided in an embodiment of this application (hiding the core wire and deformable parts).

[0055] Figure 8 A schematic diagram of the connecting arm (hiding the core wire and deformable parts) provided for another embodiment of this application.

[0056] Figure 9 This is a partial exploded view of the protective layer and arm body provided in an embodiment of this application.

[0057] Figure 10 This is a schematic diagram of a connecting arm and a first housing provided in an embodiment of this application.

[0058] Figure 11 This is a schematic diagram of a connecting arm and a first housing provided for yet another embodiment of this application.

[0059] Figure 12 This is a partial schematic diagram of the first housing provided in an embodiment of this application.

[0060] Figure 13 An exploded view of the connecting arm, first housing, and third housing structure provided in the embodiments of this application.

[0061] Figure label:

[0062] 1000. Wireless open-back headphones;

[0063] 100. Wireless earphone driver; 200. Earphone charging case;

[0064] 10. First earphone body; 101. First housing; 1011. First connecting hole; 1012. Second fastening element; 20. Second earphone body; 201. Third housing; 2011. Second connecting hole; 30. Connecting arm; 40. Fastening surface;

[0065] 1. Arm body; 11. First threading hole; 12. Second threading hole; 13. First textured pattern; 2. Protective layer; 21. First connecting part; 22. Second connecting part; 23. Second textured pattern; 3. Core wire; 4. Deformable part; 41. Bending part; 5. Adhesive layer; 6. Fixing part; 61. First fastening part. Detailed Implementation

[0066] The embodiments of this application are described in detail below. Examples of these 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 this application, and should not be construed as limiting this application.

[0067] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0068] In the description of this application, it should be understood that the terms "upper", "lower", "side", "front", "rear", etc., indicate the orientation or positional relationship based on the installation orientation or positional relationship, and are 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.

[0069] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0070] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0071] With the rapid development of mobile internet technology and the widespread adoption of smart terminals, wireless headphones, as a convenient audio output device, have become widely used in various scenarios such as daily life, sports and fitness, and office and study due to their unrestricted wearing experience and excellent portability. Currently, headphones on the market mainly include in-ear headphones, semi-in-ear headphones, and open-back headphones. Among them, open-back headphones can be further divided into over-ear headphones and clip-on headphones. Compared to in-ear and semi-in-ear headphones, clip-on open-back headphones are less likely to cause ear canal pain, stuffiness, or other discomfort after prolonged wear, making them highly popular with consumers.

[0072] In related technologies, clip-on open-back headphones typically include a first earphone body, a second earphone body, and a connecting arm. The two ends of the connecting arm are connected to the first and second earphone bodies respectively, and the connecting arm has a certain degree of flexibility. When worn, the first and second earphone bodies are located on either side of the ear, with the connecting arm fastened to the outer edge of the ear. The distance between the first and second earphone bodies is adjusted by the deformation of the connecting arm to accommodate the differences in ear thickness among different users, thus providing a suitable clamping force for each user. This effectively avoids problems such as discomfort caused by excessive clamping or easy earphone slippage due to excessive clamping, significantly improving wearing comfort and stability.

[0073] However, the connecting arm of open-back headphones, as a key structural component, not only needs to connect the two earpieces but also needs to adjust the clamping force through its own deformation. During long-term use, the connecting arm frequently undergoes bending and stretching deformations, and is also affected by environmental factors (such as temperature changes and humidity), making it prone to aging and cracking, which affects the overall appearance of the wireless open-back headphones.

[0074] Based on this, embodiments of this application provide a connecting arm, a wireless earphone unit, and a wireless open-back earphone. By wrapping a protective layer around the outer side of the connecting arm, the impact of aging and cracking of the connecting arm on the overall appearance of the wireless open-back earphone is reduced.

[0075] Figure 1 This is a schematic diagram of the structure of the wireless open-back earphone 1000 provided in an embodiment of this application.

[0076] Reference Figure 1This application first provides a wireless open-back headphone 1000, which can wirelessly connect to electronic devices using wireless communication technology. The electronic devices provide audio to the wireless open-back headphone 1000. For example, wireless communication technology may include Bluetooth, WIFI, etc. Electronic devices may include, for example, mobile phones, tablets, audio equipment, speaker equipment, video equipment, in-vehicle music playback equipment, etc. The wireless open-back headphone 1000 includes a charging case 200 and wireless earphone units 100. The wireless earphone units 100 can be clip-on earphone units that can be held in the user's ears. Each wireless open-back headphone 1000 has two wireless earphone units 100, which can be worn on the user's left and right ears respectively. In some embodiments, the two wireless earphone units 100 in each wireless open-back earphone 1000 are identical in shape, and the two wireless earphone units 100 are not distinguished for left or right ear use; in other embodiments, the two wireless earphone units 100 in each wireless open-back earphone 1000 may be mirror-symmetrical in shape, with one wireless earphone unit 100 designed for the left ear and the other wireless earphone unit 100 designed for the right ear.

[0077] Figure 2 This is a schematic diagram of the structure of the wireless earphone unit 100 provided in the embodiments of this application.

[0078] Reference Figure 2 The wireless earphone unit 100 provided in this application embodiment includes a first earphone body 10, a second earphone body 20, and a connecting arm 30. The two ends of the connecting arm 30 are respectively connected to the first earphone body 10 and the second earphone body 20. The wireless earphone unit 100 is generally U-shaped, with the first earphone body 10 and the second earphone body 20 positioned opposite each other. The connecting arm 30 has a certain degree of flexible deformation capability. In the wearing state, the first earphone body 10 and the second earphone body 20 are located on both sides of the ear. The distance between the first earphone body 10 and the second earphone body 20 is adjusted by the deformation of the connecting arm 30 to accommodate the differences in ear thickness among different users, thereby providing suitable clamping force for each user. This effectively avoids problems such as discomfort caused by excessive clamping or easy earphone dislodgement caused by excessive clamping, significantly improving wearing comfort and stability.

[0079] In some embodiments, the first earphone body 10 is held within the user's concha cavity, without penetrating deep into the user's ear canal. The first earphone body 10 can be spherical, or it can be an irregular sphere. The second earphone body 20 is located outside the user's ear and on the side opposite to the first earphone body 10. The second earphone body 20 can adopt a contoured design, shaped like a bean, to conform to the curvature of the user's auricle when worn, thereby improving the user's wearing comfort. The connecting arm 30 is fastened to one side of the user's ear, extending from the concha cavity to the back of the ear. The connecting arm 30, together with the first earphone body 10 and the second earphone body 20, clamps the user's auricle, thereby wearing the wireless earphone unit 100 on the ear.

[0080] Figure 3 A schematic diagram of the connection structure of the connecting arm 30, the first housing 101 and the third housing 201 provided in the embodiments of this application. Figure 4 for Figure 3 The diagram shows a cross-sectional view of the connection structure of the connecting arm 30, the first housing 101, and the third housing 201.

[0081] Reference Figures 2 to 4 The first earphone body 10 includes a first housing 101 and a second housing. The first housing 101 and the second housing are connected and enclosed to form a first receiving cavity. The speaker and other components of the first earphone body 10 can be installed in the first receiving cavity. The connecting arm 30 can be connected to the first housing 101. The first housing 101 and the second housing can be hemispherical housings.

[0082] The second earphone body 20 includes a third housing 201 and a fourth housing. The third housing 201 and the fourth housing are connected and enclosed to form a second receiving cavity. The power supply, motherboard and other components of the second earphone body 20 can be installed in the second receiving cavity. The connecting arm 30 can be connected to the third housing 201. The connecting arm 30 can be provided with a core wire 3. The core wire 3 can connect the components (such as speakers) in the first earphone body 10 and the components (such as motherboards, power supplies, etc.) in the second earphone body 20, so as to realize the electrical connection between the first earphone body 10 and the second earphone body 20.

[0083] Figure 5 This is a schematic diagram of the structure of the connecting arm 30 provided in an embodiment of this application. Figure 6 for Figure 5 The diagram shows a cross-sectional view of the connecting arm 30. Figure 7 This is a schematic diagram of the structure of the connecting arm 30 provided in an embodiment of this application (hidden core wire 3 and deformable part 4).

[0084] Reference Figure 2 , Figures 5 to 7The connecting arm 30 provided in this application embodiment is applied to a wireless open-back earphone 1000. It includes an arm body 1 and a protective layer 2. The arm body 1 has a first wire hole 11. The length of the first wire hole 11 extends along the length direction of the arm body 1. A core wire 3 is threaded through the first wire hole 11. The arm body 1 is connected to the first earphone body 10 and the second earphone body 20 of the wireless open-back earphone 1000 through the core wire 3. The protective layer 2 surrounds the arm body 1 and covers the outer side of the arm body 1.

[0085] It should be noted that the protective layer 2 is a protective structure covering the outer surface of the arm body 1. The core function of the protective layer 2 is to protect the arm body 1 and the core wire 3, while also helping to improve the overall performance of the connecting arm. The protective layer 2 can enhance the structural stability of the arm body 1 through the properties of its own material (such as flexibility and strength). For example, if the arm body 1 is made of a softer material, the protective layer 2 can provide a certain degree of support, reducing excessive deformation of the arm body 1; if the arm body 1 needs to be bent frequently (such as to adapt to the ear contours of different wearers), the protective layer 2 can be made of an elastic material to allow for flexible deformation in conjunction with the arm body 1. For example, the protective layer 2 can be a coating structure or a structure woven from one or more braided threads.

[0086] It should be noted that the first earphone body 10 may include components such as a speaker, and the first housing 101 or the second housing of the first earphone body 10 may be provided with a sound outlet, which can transmit the sound emitted by the speaker to the user's ears. The second earphone body 20 may include components such as a power supply and a motherboard, and the power supply and motherboard in the second earphone body 20 can be electrically connected to the speaker and other components in the first earphone body 10 through the core wire 3 to supply power and provide signals to the speaker of the first earphone body 10.

[0087] It should be noted that both ends of the core wire 3 extend out of the arm body 1 and are located outside the arm body 1. One end of the core wire 3 can be connected to components (such as speakers) inside the first earphone body 10, and the other end of the core wire 3 can be connected to components (such as power supply, motherboard, etc.) inside the second earphone body 20. The power supply can provide power to the speaker through the core wire 3, and the motherboard can transmit electrical signals to the speaker through the core wire 3 to control the speaker's operation, so that the wireless earphone unit 100 can play sound.

[0088] It should be noted that the diameter of the first threading hole 11 of the arm body 1 can be adapted to the diameter of the core wire 3, which can reduce the gap between the arm body 1 and the core wire 3.

[0089] It should be noted that the arm body 1 has a certain degree of deformation capability. When an external force causes the connecting arm 30 to be squeezed against the user's ear, the arm body 1 can deform to a certain extent under pressure, thereby reducing the discomfort caused by the external force to the user's ear and improving wearing comfort. In some embodiments, the material of the arm body 1 can be a polymer material, such as silicone, thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE), thermoplastic rubber (TPR), thermoplastic polyolefin elastomer (TPO), rubber, polyvinyl chloride, ethylene-vinyl acetate copolymer (EVA), etc.

[0090] The connecting arm 30 provided in this embodiment has a protective layer 2 on the outer surface of the arm body 1. The protective layer 2 covers the arm body 1 and provides effective structural protection. During the long-term bending and stretching deformation of the connecting arm 30, the protective layer 2 can disperse some of the stress and reduce fatigue damage caused by repeated deformation of the arm body 1. At the same time, the protective layer 2 can reduce the exposure of the arm body 1, slow down the aging rate of the arm body 1, and thus reduce the risk of cracking of the arm body 1. Even if the arm body 1 cracks due to aging, the arm body 1 will not be directly exposed because the protective layer 2 can cover it. This can reduce the impact of aging and cracking of the arm body 1 on the appearance of the connecting arm 30, ensure the structural integrity and aesthetics of the connecting arm 30 after long-term use, and thus maintain the overall appearance of the wireless open-back headphone 1000.

[0091] In some embodiments, the protective layer 2 is a braided layer made of at least one braided thread.

[0092] It should be noted that the braided layer refers to a mesh structure formed by interlacing one or more braided threads. The material (such as nylon, metal, cotton, etc.), color, braiding density, and braiding method (such as plain weave, twill weave, satin weave, etc.) of the braided threads can be adjusted to modify the performance parameters and appearance of the protective layer 2 to suit different needs.

[0093] It should be noted that in some embodiments, when the braided threads of the protective layer 2 are made of materials with low or no rigidity, such as nylon or cotton, a material with a certain rigidity can be placed inside the arm body 1 as the skeleton of the connecting arm 30 to support it. In other embodiments, when the braided threads of the protective layer 2 are made of materials with a certain rigidity, such as metal, the protective layer 2 itself has a certain rigidity, and the protective layer 2 can serve as the outer skeleton of the connecting arm 30 to support it. Furthermore, when the braided layer is woven from multiple braided threads, the materials, sizes, and colors of the braided threads can be the same or different.

[0094] The protective layer 2 surrounds the arm body 1, forming a physical barrier between the arm body 1 and the external environment, significantly reducing the area of ​​the arm body 1 directly exposed to the outside world. Since the arm body 1 is typically made of polymer materials such as TPU and silicone, these materials are prone to generating static electricity due to friction, which can attract dust, lint, and other fine impurities from the air. The protective layer 2 effectively reduces the direct contact between the arm body 1 and external impurities, lowering the probability of static electricity attracting impurities and making it easier to keep the wireless earphone unit 100 clean during daily use.

[0095] Furthermore, the protective layer 2 is woven from one or more braided threads through a specific process, allowing for highly customizable appearance. For example, different colored braided threads (such as monochrome, mixed colors, gradient colors, etc.) can be used to change the overall tone of the protective layer 2, adapting to different product design styles; the material of the braided threads (such as nylon, polyester, metal wire, or natural fibers, etc.) can be adjusted to give the protective layer 2 different textures (such as smooth, matte, metallic luster, etc.); the braiding density can be changed (from sparse to dense) to give the surface of the protective layer 2 a visual effect ranging from transparent to thick; in addition, the braiding method can be adjusted to form diverse patterns (such as grid, stripe, wave, or customized patterns). By combining and adjusting the above parameters, the surface of the connecting arm 30 can present a rich variety of colors and textures, significantly improving the appearance of the wireless earphone unit 100 and meeting the personalized needs of different users.

[0096] Through the above settings, the protective layer 2 can reduce the impact of aging and cracking of the arm body 1 on the appearance of the connecting arm 30, ensuring the structural integrity and aesthetics of the connecting arm 30 after long-term use; it can also reduce the probability of the connecting arm 30 adsorbing impurities, making it easier to keep the wireless earphone unit 100 clean during daily use; in addition, by adjusting the color, material, weaving density and weaving method of the braided wire, the protective layer 2 can present a rich variety of colors and textures, significantly improving the appearance of the wireless earphone unit 100 and meeting the personalized needs of different users.

[0097] In some embodiments, the braided layer has a uniform braid density.

[0098] It should be noted that uniform weave density in the braided layer means that the spacing between the weave lines is consistent throughout the layer, and the size and shape of the "mesh" (or unit structure) formed by the intersection of the braided threads remain uniform on the surface of the braided layer, without any areas where the mesh is too large, too small, or deformed. Furthermore, the threads in the braided layer are neatly arranged, with uniform spacing between braided threads in different directions, without any areas of overlapping (e.g., multiple braided threads squeezed together in one area), missing braids (e.g., a blank area due to a missing thread), or skipped stitches (e.g., braided threads not crossing according to the predetermined path, resulting in misalignment). In addition, the surface flatness of the braided layer is consistent.

[0099] A uniformly dense braided layer allows the braided threads to form a regular and consistent stress network on the surface of the arm. When the connecting arm is subjected to external forces such as bending and stretching, the stress can be dispersed through the uniformly distributed braided threads, reducing stress concentration and lowering the risk of braided layer tearing or localized damage to the arm. Simultaneously, the uniform structure ensures that the deformation amplitude and recovery force remain consistent across all areas during repeated deformation, reducing the risk of stiffness due to excessive density in certain areas and excessive stretching due to sparse density, thus maintaining the overall structural stability and service life of the connecting arm.

[0100] In other embodiments, the weave density of a portion of the braided layer is less than the weave density of another portion of the braided layer.

[0101] It should be noted that the density of different areas of the braided layer can be intentionally varied through design. This can be achieved by varying the spacing between the weave lines in different areas of the braided layer, with larger "mesh holes" (or unit structures) formed by the intersection of braided threads in some areas and smaller "mesh holes" in others. This differentiated design is not due to uneven density caused by manufacturing errors, but rather a directional design achieved by adjusting braiding parameters (such as braiding thread tension, crossing frequency, and braiding thread thickness).

[0102] The weaving density in some areas of the braided layer is lower than that in other areas, and the braided layer varies from sparse to dense in different areas. This allows the braided layer to achieve a visual effect that changes from transparent to thick, which can enhance the aesthetics and quality of the connecting arm.

[0103] Reference Figure 5 In some embodiments, the protective layer 2 avoids the end face of the arm body 1.

[0104] It should be noted that "protective layer 2 avoids the end face of arm body 1" means that protective layer 2 will not cover the end face of arm body 1. The edge surface of protective layer 2 (i.e., the end face of protective layer 2) can be flush with the end face of arm body 1, slightly lower than the end face of arm body 1, or slightly higher than the end face of arm body 1. The figure shows that the edge surface of protective layer 2 is flush with the end face of arm body 1.

[0105] The protective layer 2 can be woven into the arm body 1 using a braiding machine. If the protective layer 2 covers the end face of the arm body 1, the direction and tension of the braiding thread at the corners between the end face and the side face of the arm body 1 need to be precisely controlled during the weaving process to reduce problems such as thread accumulation, wrinkles, or missed weaves, greatly increasing the difficulty of the weaving process. By avoiding the end face of the arm body 1 and weaving the outer side of the arm body 1, the corner between the end face and the outer side of the arm body 1 does not need to be treated during the weaving process, thus reducing the need to handle complex corners and lowering the weaving difficulty.

[0106] In this embodiment, the end face of the protective layer 2 is aligned with the end face of the arm body 1.

[0107] When the end face of the protective layer 2 is aligned with the end face of the arm body 1, the end of the connecting arm 30 does not have the protective layer 2 extending beyond or retracting from the end face of the arm body 1. Thus, when processing the connecting arm 30, the excess parts of the protective layer 2 and the end of the arm body 1 can be removed simultaneously using a cutter, which is helpful for mass production of the connecting arm 30.

[0108] Reference Figure 4 and Figure 5 In some embodiments, a first connecting portion 21 is provided at one end of the protective layer 2, and the first connecting portion 21 is used to be disposed inside the first earphone body 10.

[0109] The first connecting portion 21 of the protective layer 2 is disposed within the first earphone body 10. That is, after the connecting arm 30 is assembled with the first earphone body 10, the edge area of ​​the protective layer 2 can be hidden within the first earphone body 10, thereby improving the appearance of the wireless earphone unit 100. In addition, it can reduce or avoid the situation where relative displacement or loosening occurs between the protective layer 2 and the first earphone body 10 during repeated deformation of the connecting arm 30 or long-term use, resulting in the arm body 1 being exposed, so as to ensure that the protective layer 2 can stably perform its protective function for the arm body 1.

[0110] In some embodiments, a second connecting portion 22 is provided at one end of the protective layer 2, and the second connecting portion 22 is used to be disposed inside the second earphone body 20.

[0111] The second connecting portion 22 of the protective layer 2 is disposed within the second earphone body 20. That is, after the connecting arm 30 is assembled with the second earphone body 20, the edge area of ​​the protective layer 2 can be hidden within the second earphone body 20, thereby improving the appearance of the wireless earphone unit 100. In addition, it can reduce or avoid the situation where relative displacement or loosening occurs between the protective layer 2 and the second earphone body 20 during repeated deformation of the connecting arm 30 or long-term use, resulting in the arm body 1 being exposed, so as to ensure that the protective layer 2 can stably perform its protective function for the arm body 1.

[0112] In this embodiment of the application, a first connecting portion 21 and a second connecting portion 22 are respectively provided at both ends of the protective layer 2. The first connecting portion 21 and the second connecting portion 22 are respectively used to be disposed in the first earphone body 10 and the second earphone body 20.

[0113] Reference Figure 5 and Figure 7 The arm body 1 is a flexible component, and a second threading hole 12 is provided inside the arm body 1. The length of the second threading hole 12 extends along the length direction of the arm body 1. A deformable component 4 is provided inside the second threading hole 12. The deformable component 4 can deform to cause the arm body 1 and the protective layer 2 to deform.

[0114] It should be noted that arm body 1 is a flexible component, meaning that arm body 1 can deform under the action of external force. This external force can originate from deformable component 4. For example, after deformable component 4 is assembled with arm body 1, arm body 1 can deform to adapt to the shape of deformable component 4. When deformable component 4 deforms, it can cause arm body 1 to deform synchronously. Of course, this external force can also originate from sources other than connecting arm 30. For example, when the user's ear is pressed against connecting arm 30, arm body 1 can deform to a certain extent. For example, arm body 1 can be made of polymer materials such as soft rubber.

[0115] It should be noted that the deformable component 4 is a part with a certain strength and rigidity. The material of the deformable component 4 can be metal or non-metal. After the deformable component 4 is assembled with the arm body 1 to form the connecting arm 30, the deformable component 4 can act as the skeleton of the connecting arm 30, providing support for the connecting arm 30. The overall shape of the connecting arm 30 can be determined by the deformable component 4. For example, when the overall shape of the deformable component 4 is U-shaped, the overall shape of the connecting arm 30 is also U-shaped; when the overall shape of the deformable component 4 is L-shaped, the overall shape of the connecting arm 30 is also L-shaped. In this embodiment, the overall shape of the deformable component 4 is U-shaped, making the overall shape of the connecting arm 30 ergonomic.

[0116] It should be noted that the diameter of the second threading hole 12 can be adapted to the diameter of the deformable part 4. In this embodiment, the deformable part 4 is strip-shaped. In some embodiments, the cross-section of the deformable part 4 can be a regular or irregular shape such as a circle, ellipse, quadrilateral, or pentagon. In this embodiment, the cross-section of the deformable part 4 is circular.

[0117] The arm body 1 is designed as a flexible component, possessing a certain degree of deformation capability. When the user's ear is pressed against the connecting arm 30, the arm body 1 can deform to a certain extent, reducing the discomfort caused by external pressure on the user's ear. However, relying solely on the material properties of the arm body 1 for deformation can easily lead to problems such as uncertain deformation direction or excessive deformation. By inserting the deformable component 4 into the second threading hole 12 of the arm body 1, the active deformation (such as bending and stretching) of the deformable component 4 can guide the arm body 1 to deform in a preset direction and amplitude, thus ensuring the shape of the connecting arm 30.

[0118] In this embodiment of the application, the protective layer 2 is a braided layer made of at least one braided thread, wherein the braided thread can be a non-metallic material such as nylon or polyester. The protective layer 2 has a certain degree of flexibility and can deform with the deformable part 4.

[0119] In this embodiment, the deformable part 4 is a metal part.

[0120] The deformable component 4 is made of metal. Metal materials have high strength and rigidity, and can provide more stable and controllable deformation force. Compared with non-metallic materials, the deformable component 4 made of metal is less prone to fatigue-induced deformation capacity decay during repeated bending, stretching and other deformation processes. It can stably drive the deformation of the arm body 1 for a long time, so that the connecting arm 30 can continuously provide a suitable clamping force for different users, ensuring wearing comfort and stability.

[0121] In this embodiment, the deformable part 4 is a shape memory alloy part.

[0122] Shape memory alloys are special alloy materials with a shape memory effect. Their core characteristic is that after being deformed at a specific temperature, they can recover their original shape before deformation when the temperature changes to a certain critical value (such as heating to the phase transition temperature). The main types of shape memory alloys include titanium-nickel based shape memory alloys, copper-based shape memory alloys (such as copper-zinc-aluminum alloys, copper-nickel-aluminum alloys, etc.), and iron-based shape memory alloys (such as iron-manganese-silicon alloys, etc.).

[0123] Shape memory alloys possess unique shape memory properties; after being deformed by external force, they automatically return to their original shape when the ambient temperature reaches their phase transition temperature. When applied to the deformable component 4 of the connecting arm 30, the deformable component 4 can deform accordingly based on the different ear shapes of different users, and automatically return to its initial state after wearing or triggered by temperature changes, requiring no manual adjustment and significantly improving the ease of use of the connecting arm 30. For example, when a user wears the arm, the deformable component 4 made of shape memory alloy can bend with the arm body 1 to adapt to the ear shape; after removal, it returns to its original shape under the influence of room temperature or body temperature, making it easy to store.

[0124] Of course, in other embodiments, the deformable part 4 can also be a non-memory alloy part. For example, the deformable part 4 can be an iron part, a steel part, a copper part, a silver part, etc.

[0125] Reference Figure 5 In some embodiments, at least one end of the deformable member 4 is provided with a bent portion 41, which is located outside the arm body 1. The bent portion 41 can abut against the end face of the arm body 1, or against the end face of the protective layer 2, or against both the end face of the arm body 1 and the end face of the protective layer 2.

[0126] It should be noted that in some embodiments, the bending portion 41 may be provided only at one end of the deformable member 4, while in other embodiments, the bending portion 41 may be provided at both ends of the deformable member 4.

[0127] Understandably, since the deformable part 4 is inserted into the second threaded hole 12 of the arm body 1, it is prone to shifting along the length of the arm body 1 during long-term stress deformation or vibration, affecting its control over the deformation of the arm body 1. However, a bent portion 41 is provided at least at one end of the deformable part 4. After the bent portion 41 abuts against the end face of the arm body 1 or the protective layer 2, the reaction force of the end face can restrict the movement of the deformable part 4 relative to the arm body 1 along its length, preventing it from falling out of the second threaded hole 12 or going too deep. This ensures that the deformable part 4 is always in the preset working position, guaranteeing its stable control over the deformation of the arm body 1.

[0128] In some embodiments, the end of the deformable member 4 can be bent 90° to form a bent portion 41.

[0129] Figure 8 A schematic diagram of the structure of the connecting arm 30 provided in another embodiment of this application (hidden core wire 3 and deformable part 4).

[0130] Reference Figure 8 In some embodiments, an adhesive layer 5 is provided between the protective layer 2 and the arm body 1.

[0131] It should be noted that the adhesive layer 5 refers to a layer of material with adhesive properties disposed between the protective layer 2 and the arm body 1. The adhesive layer 5 can be formed by thermosetting adhesives, such as epoxy resin, polyester resin, vinyl ester, bismaleimide, thermosetting polyimide, cyanate ester, etc. Alternatively, the adhesive layer 5 can also be a pressure-sensitive adhesive, hot melt adhesive, etc. The adhesive layer 5 uses its own adhesiveness to tightly bond and fix the protective layer 2 to the outer surface of the flexible arm body 1, forming a stable interlayer connection structure.

[0132] When the protective layer 2 is only bonded to the arm body 1 by wrapping around it, gaps can easily form between the two due to relative sliding during repeated deformation of the connecting arm 30. This can cause the protective layer 2 to wrinkle, shift, or even partially detach, affecting its protective effect on the arm body 1. The adhesive layer 5 can firmly bond the protective layer 2 to the arm body 1 through continuous adhesion, reducing relative movement between layers and ensuring that the protective layer 2 always tightly wraps the arm body 1. The adhesive layer 5 connects the protective layer 2 and the arm body 1 into one unit. When the connecting arm 30 is subjected to external forces such as bending and tension, the external forces can be transmitted more evenly between the protective layer 2 and the arm body 1 through the adhesive layer 5, reducing local stress concentration caused by interlayer separation. At the same time, the reinforcing effect of the protective layer 2 (such as tear resistance and anti-aging) can be applied to the arm body 1 more efficiently through the adhesive layer 5, improving the overall deformation resistance and structural reliability of the connecting arm 30. In addition, since the protective layer 2 is formed by braiding, the adhesive layer 5 can bond the braided threads together, so that the braided threads can maintain a tight fit, reducing the possibility of the braided threads becoming loose and reducing the occurrence of loose threads in the protective layer 2.

[0133] In some embodiments, the thickness of the protective layer 2 is 0.1 mm to 0.3 mm.

[0134] For example, the thickness of the protective layer 2 can be 0.1mm, 0.12mm, 0.14mm, 0.16mm, 0.18mm, 0.2mm, 0.22mm, 0.24mm, 0.26mm, 0.28mm, or 0.3mm.

[0135] It should be noted that in some embodiments, the protective layer 2 has a uniform thickness, meaning that the thickness of the protective layer 2 is equal everywhere. In other embodiments, due to factors such as weaving process and weaving pattern, the protective layer 2 may have some areas with a larger thickness and other areas with a smaller thickness. In such cases, the thickness of the area with a smaller thickness is greater than or equal to 0.1 mm, and the thickness of the area with a larger thickness is less than or equal to 0.3 mm.

[0136] A protective layer 2 with a thickness greater than or equal to 0.1 mm is provided. The mesh structure formed by the interwoven threads is denser, resulting in stronger overall tensile and tear resistance. During the repeated deformation of the connecting arm 30, the protective layer 2 can more effectively disperse the stress on the arm body 1, reducing damage to the arm body 1 caused by excessive local stress. At the same time, the protective layer 2 with a thickness greater than or equal to 0.1 mm has a more significant barrier effect against external environmental factors (such as friction and collision), which can better protect the flexible arm body 1 and reduce its risk of aging and cracking.

[0137] A protective layer 2 with a thickness of 0.3 mm or less ensures its flexibility, preventing it from excessively increasing the overall rigidity of the connecting arm 30. When the connecting arm 30 needs to deform to fit different users' ear shapes, the protective layer 2, with a thickness of 0.3 mm or less, can flexibly bend and stretch with the arm body 1, reducing difficulties in deformation of the connecting arm 30 due to an excessively thick protective layer 2, and ensuring smooth adjustment of clamping force and wearing comfort.

[0138] Figure 9 This is a partial exploded view of the protective layer 2 and the arm body 1 provided in the embodiments of this application.

[0139] Reference Figure 9 In some embodiments, the outer side of the arm body 1 is provided with a first texture pattern 13, and the protective layer 2 is provided with a second texture pattern 23 on one side facing the arm body, and the first texture pattern 13 and the second texture pattern 23 are interlocked.

[0140] It should be noted that the first texture pattern 13 can be a concave-convex structure disposed on the outer side of the arm body 1, and the second texture pattern 23 can be a concave-convex structure disposed on the side of the protective layer 2. For example, when the protective layer 2 is a woven layer, the side of the protective layer 2 has some rough textures due to the weaving process, and these textures can form the second texture pattern 23.

[0141] A first textured pattern 13 is provided on the outer side of the arm body 1, and a second textured pattern 23 is provided on the side of the protective layer 2. The first textured pattern 13 and the second textured pattern 23 are interlocked, which can increase the friction between the arm body 1 and the protective layer 2 and reduce the damage to the appearance of the connecting arm caused by displacement of the two. In addition, it can also increase the connection stability between the arm body 1 and the protective layer 2 and ensure the quality of the connecting arm 30.

[0142] Figure 10 This is a schematic diagram of a connecting arm 30 and a first housing 101 provided in an embodiment of this application. Figure 11 A schematic diagram of the connecting arm 30 and the first housing 101 provided in another embodiment of this application.

[0143] Reference Figure 10 and Figure 11 In some embodiments, the connecting arm 30 further includes a fixing member 6, which is disposed at the end of the arm body 1 and wraps around the edge of the protective layer 2, with the end of the core wire 3 located outside the fixing member 6.

[0144] The fastener 6 is placed at the end of the arm body 1 and wraps around the edge of the protective layer 2. The fastener 6 can fix the edge area of ​​the protective layer 2, reducing the risk of delamination between the edge of the protective layer 2 and the arm body 1.

[0145] In addition, in some embodiments, the protective layer 2 is a braided layer made of braided yarn. The fastener 6 is disposed at the end of the arm body 1 and wraps around the edge of the protective layer 2. The fastener 6 can fix the edge area of ​​the protective layer 2 and reduce the possibility of the braided layer becoming loose.

[0146] Figure 12 This is a partial schematic diagram of the first housing provided in an embodiment of this application.

[0147] Reference Figure 11 and Figure 12 In some embodiments, the fastener 6 is provided with a first fastening member 61, which is used to fasten and connect with the first earphone body 10, or the first fastening member 61 is used to fasten and connect with the second earphone body 20.

[0148] It should be noted that in some embodiments, fixing members 6 can be provided at both ends of the connecting arm 30. In this case, the first fastening members 61 on the two fixing members 6 can be connected to the corresponding first earphone body 10 and second earphone body 20, respectively. Of course, in other embodiments, fixing members 6 can be provided only at one end of the connecting arm 30, and fixing members 6 can be not provided at the other end of the connecting arm 30. In this case, the first fastening members 61 on this fixing member 6 are only used to connect to the first earphone body 10 or the second earphone body 20.

[0149] It should be noted that the first housing 101 of the first earphone body 10 may be provided with a second fastening member 1012 that matches the first fastening member 61. The first fastening member 61 and the second fastening member 1012 are fastened together. For example, the first fastening member 61 may be a buckle provided on the fixing member 6, and the second fastening member 1012 may be a slot provided on the first housing 101 of the first earphone body 10. The buckle may be inserted into the slot and fastened together with the slot. Alternatively, the first fastening member 61 may be a slot provided on the fixing member 6, and the second fastening member 1012 may be a buckle provided on the first housing 101 of the first earphone body 10. In other embodiments, the third housing 201 of the second earphone body 20 may be provided with a third fastening member that matches the first fastening member 61. The first fastening member 61 and the third fastening member are fastened together. For example, the first fastening member 61 may be a buckle provided on the fixing member 6, and the third fastening member may be a slot provided on the third housing 201 of the second earphone body 20. The buckle is inserted into the slot and fastened together with the slot. Alternatively, the first fastening member 61 may be a slot provided on the fixing member 6, and the third fastening member may be a buckle provided on the third housing 201 of the second earphone body 20.

[0150] A first fastening member 61 is provided on the fixing member 6. The fixing member 6 can be fastened to the first earphone body 10 or the second earphone body 20 through the first fastening member 61, which can improve the connection stability between the connecting arm 30 and the first earphone body 10 or the second earphone body 20.

[0151] Reference Figures 2 to 4 The present application provides a wireless earphone unit 100, which is applied to a wireless open-back earphone 1000. It includes a first earphone body 10, a second earphone body, and a connecting arm 30 in any of the above embodiments. The two ends of the connecting arm 30 are respectively connected to the first earphone body 10 and the second earphone body 20.

[0152] It should be noted that the first earphone body 10 may include components such as a speaker, and the first housing 101 or the second housing of the first earphone body 10 may be provided with a sound outlet, which can transmit the sound emitted by the speaker to the user's ears. The second earphone body 20 may include components such as a power supply and a motherboard, and the power supply and motherboard in the second earphone body 20 can be electrically connected to the speaker and other components in the first earphone body 10 through the core wire 3 of the connecting arm 30 to supply power and provide signals to the speaker of the first earphone body 10.

[0153] Since the connecting arm 30 in any of the above embodiments can reduce the impact of aging and cracking of the arm body 1 on the appearance of the connecting arm 30, ensuring the structural integrity and aesthetics of the connecting arm 30 after long-term use, and the protective layer 2 can present rich and varied colors and textures, the wireless earphone unit 100 containing this connecting arm 30 has a good appearance. In addition, the protective layer 2 of the connecting arm 30 can also reduce the probability of the connecting arm 30 adsorbing impurities. Therefore, the wireless earphone unit 100 containing this connecting arm 30 is easier to keep clean in daily use.

[0154] Figure 13 An exploded view of the connecting arm 30, the first housing 101, and the third housing 201 provided in the embodiments of this application.

[0155] Reference Figure 4 and Figure 13 In some embodiments, the first earphone body 10 is provided with a first connection hole 1011, the end of the connecting arm 30 is disposed in the first connection hole 1011, and the hole wall of the first connection hole 1011 abuts against the first connecting portion 21 of the protective layer 2 of the connecting arm 30.

[0156] It should be noted that the first earphone body 10 includes a first housing 101 and a second housing, and the first connection hole 1011 can be provided in the first housing 101.

[0157] The end of the connecting arm 30 is positioned within the first connecting hole 1011. The wall of the first connecting hole 1011 abuts against the first connecting portion 21 of the protective layer 2 of the connecting arm 30. The first connecting hole 1011 and the connecting arm 30 can form an interference fit. The wall of the first connecting hole 1011 can compress the connecting arm 30, thus assembling the first earphone body 10 with the connecting arm 30. The first connecting portion 21 is the edge region of the protective layer 2. The wall of the first connecting hole 1011 abuts against the first connecting portion 21 of the protective layer 2 of the connecting arm 30. The wall of the first connecting hole 1011 can press the edge region of the protective layer 2 tightly, reducing the possibility of the protective layer 2 becoming frayed during use.

[0158] In some embodiments, the second earphone body 20 is provided with a second connection hole 2011, the end of the connecting arm 30 is disposed in the second connection hole 2011, and the hole wall of the second connection hole 2011 abuts against the second connection portion 22 of the protective layer 2.

[0159] It should be noted that the second earphone body 20 includes a third housing 201 and a fourth housing, and the second connection hole 2011 can be disposed in the third housing 201.

[0160] The end of the connecting arm 30 is positioned within the second connecting hole 2011. The wall of the second connecting hole 2011 abuts against the second connecting portion 22 of the protective layer 2 of the connecting arm 30. The second connecting hole 2011 and the connecting arm 30 can form an interference fit. The wall of the second connecting hole 2011 can compress the connecting arm 30, thus assembling the second earphone body 20 with the connecting arm 30. The second connecting portion 22 is the edge region of the protective layer 2. The wall of the second connecting hole 2011 abuts against the second connecting portion 22 of the protective layer 2 of the connecting arm 30. The wall of the first connecting hole 1011 can press the edge region of the protective layer 2 tightly, reducing the possibility of the protective layer 2 becoming frayed during use.

[0161] In this application, the two ends of the connecting arm 30 are respectively disposed in the first connecting hole 1011 and the second connecting hole 2011, forming an interference fit with the first connecting hole 1011 and the second connecting hole 2011 respectively.

[0162] In some embodiments, the two ends of the connecting arm 30 are respectively provided with fixing members 6, and the two fixing members 6 can be installed in the first connecting hole 1011 and the second connecting hole 2011 respectively. The hole walls of the first connecting hole 1011 and the second connecting hole 2011 can respectively press the corresponding fixing members 6.

[0163] Reference Figure 11 and Figure 12 In some embodiments, the first earphone body 10 is provided with a second fastening member 1012, which is fastened to the first fastening member 61 of the connecting arm 30.

[0164] It should be noted that the first fastening member 61 can be a buckle set on the fixing member 6, and the second fastening member 1012 can be a slot set on the first housing 101 of the first earphone body 10. The buckle can be inserted into the slot and fastened to the slot. Alternatively, the first fastening member 61 can be a slot set on the fixing member 6, and the second fastening member 1012 can be a buckle set on the first housing 101 of the first earphone body 10.

[0165] It should be noted that when the second fastening member 1012 is disposed in the slot of the first housing 101, the end of the slot can be connected to the surface of the first housing 101, so that the buckle can be inserted into the slot from the end of the slot and fasten with the fastening surface 40 in the slot.

[0166] A second fastening member 1012 is provided in the first earphone body 10. The second fastening member 1012 can be connected to the first fastening member 61 of the connecting arm 30. In this way, the connection strength between the connecting arm 30 and the first earphone body 10 can be improved, thereby improving the assembly stability of each component of the wireless earphone unit 100 and improving the quality of the wireless earphone unit 100.

[0167] In some embodiments, the second earphone body 20 is provided with a third fastening member, which is fastened to the first fastening member 61 of the connecting arm 30.

[0168] It should be noted that when the two ends of the connecting arm 30 are respectively provided with the first fastening member 61, the two first fastening members 61 can be fastened and connected with the second fastening member 1012 and the third fastening member respectively.

[0169] It should be noted that the first fastening member 61 can be a buckle set in the fixing member 6, and the third fastening member can be a slot set in the third housing 201 of the second earphone body 20. The buckle can be inserted into the slot and fastened to the slot. Alternatively, the first fastening member 61 can be a slot set in the fixing member 6, and the third fastening member can be a buckle set in the third housing 201 of the second earphone body 20.

[0170] It should be noted that when the third fastening element is set in the slot of the third housing 201, the end of the slot can communicate with the surface of the third housing 201, so that the buckle can be inserted into the slot from the end of the slot and fasten with the fastening surface 40 in the slot.

[0171] A third fastening member is provided on the second earphone body 20. The third fastening member can be connected to the first fastening member 61 of the connecting arm 30. In this way, the connection strength between the connecting arm 30 and the second earphone body 20 can be improved, thereby improving the assembly stability of each component of the wireless earphone unit 100 and improving the quality of the wireless earphone unit 100.

[0172] Reference Figure 1The present application provides a wireless open-back earphone 1000, which includes an earphone case 200 and a wireless earphone unit 100 in any of the above embodiments. The earphone case 200 is used to store the wireless earphone unit 100.

[0173] Since the wireless earphone unit 100 in any of the above embodiments has a good appearance, the wireless open-back earphone 1000 containing the wireless earphone unit 100 has a good appearance; in addition, since the wireless earphone unit 100 can be kept clean in daily use, the earphone case 200 of the wireless open-back earphone 1000 containing the wireless earphone unit 100 is not prone to dust accumulation.

[0174] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A connecting arm for use in wireless open-back headphones, characterized in that, include: The arm body has a first wire hole, the length of which extends along the length of the arm body. A core wire is threaded through the first wire hole, and the arm body is connected to the first and second earpieces of the wireless open-back earphone through the core wire. A protective layer surrounds the arm body and covers the outer side of the arm body facing away from the core wire, the protective layer being a braided layer woven from at least one braided thread; A fastener is provided at the end of the arm body near the first earphone body or the second earphone body, and the fastener wraps around the edge of the protective layer, with the end of the core wire located outside the fastener.

2. The connecting arm according to claim 1, characterized in that, The braided layer has a uniform braiding density; or, The weave density of one region of the braided layer is less than the weave density of another region of the braided layer.

3. The connecting arm according to claim 1, characterized in that, The protective layer avoids the end face of the arm body.

4. The connecting arm according to claim 1, characterized in that, The end face of the protective layer is aligned with the end face of the arm body.

5. The connecting arm according to claim 1, characterized in that, One end of the protective layer is provided with a first connecting portion, which is used to be disposed in the first earphone body; and / or, the other end of the protective layer is provided with a second connecting portion, which is used to be disposed in the second earphone body.

6. The connecting arm according to any one of claims 1-5, characterized in that, The arm body is a flexible component, and a second threading hole is provided inside the arm body. The length of the second threading hole extends along the length direction of the arm body. A deformable component is provided inside the second threading hole, and the deformable component can deform to cause deformation of the arm body and the protective layer.

7. The connecting arm according to claim 6, characterized in that, At least one end of the deformable member is provided with a bent portion, the bent portion is located outside the arm body, and the bent portion abuts against the end face of the arm body and / or the protective layer.

8. The connecting arm according to claim 1, characterized in that, An adhesive layer is provided between the protective layer and the arm body.

9. The connecting arm according to claim 1, characterized in that, The outer side of the arm body is provided with a first textured pattern, and the protective layer is provided with a second textured pattern on one side facing the arm body. The first textured pattern and the second textured pattern are interlocked.

10. The connecting arm according to any one of claims 1-5 and 7-9, characterized in that, The fastener is provided with a first fastening member, which is used to fasten and connect with the first earphone body, or the first fastening member is used to fasten and connect with the second earphone body.

11. A wireless earphone unit, used in wireless open-back earphones, comprising a first earphone body and a second earphone body, characterized in that, It also includes a connecting arm as described in any one of claims 1-10, wherein the connecting arm is connected to the first earphone body and the second earphone body respectively via a core wire.

12. The wireless earphone unit according to claim 11, characterized in that, The first earphone body is provided with a first connecting hole, and the end of the connecting arm is disposed in the first connecting hole, the wall of the first connecting hole abuts against the first connecting portion of the protective layer of the connecting arm; and / or, The second earphone body is provided with a second connection hole, the end of the connecting arm is disposed in the second connection hole, and the hole wall of the second connection hole abuts against the second connection part of the protective layer.

13. The wireless earphone unit according to claim 11 or 12, characterized in that, The first earphone body is provided with a second fastening member, which is fastened to the first fastening member of the connecting arm; and / or, The second earphone body is provided with a third fastening component, which is fastened and connected to the first fastening component.

14. A wireless open-back earphone, comprising an earphone case, characterized in that, It also includes a wireless earphone unit as provided in any one of claims 11-13, wherein the earphone compartment is used to store the wireless earphone unit.

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