Bluetooth antenna and head-mounted Bluetooth earphone

Abstract

The utility model relates to the technical field of Bluetooth earphones, in particular to a Bluetooth antenna and a head-mounted Bluetooth earphone. The Bluetooth antenna is arranged in the head-mounted Bluetooth earphone, the head-mounted Bluetooth earphone comprises an earphone shell, and the earphone shell comprises a metal shell and a plastic shell. The Bluetooth antenna comprises a first connecting part and a second connecting part, the first connecting part is provided with a first side face and a second side face which are oppositely arranged, the first side face is provided with an antenna radiation area, and the antenna radiation area is arranged at the position, close to the side edge, of the first side face; the second connecting part is flexibly connected with the first connecting part, the second connecting part is provided with a third side face and a fourth side face which are oppositely arranged, the third side face is provided with reference ground, and the reference ground is electrically connected with the antenna radiation area through a circuit. Wherein the first connecting part can be bent relative to the second connecting part, so that the antenna radiation area is arranged in a direction far away from the metal shell. The head-mounted Bluetooth earphone comprises the Bluetooth antenna. The Bluetooth signal transmission of the Bluetooth earphone applying the Bluetooth antenna is stable.

Description

Technical Field

[0001] This utility model relates to the field of Bluetooth headset technology, and in particular to a Bluetooth antenna and a Bluetooth headset. Background Technology

[0002] Headphones receive electrical signals from media players or receivers and convert them into audible sound waves using speakers placed close to the ears. For over-ear Bluetooth headphones, the antenna typically uses an onboard inverted F-antenna (IFA) or other types of onboard antennas. The disadvantage of this type of antenna is that it occupies a significant amount of motherboard space. In cases with metal earcups or irregularly shaped and small motherboards, antenna radiation is affected by the metal earcups. Furthermore, the motherboard area is insufficient to support a large onboard antenna, impacting the headphone's signal transmission and interference resistance, ultimately resulting in a poor user experience when enjoying music. Utility Model Content

[0003] The main purpose of this invention is to propose a Bluetooth antenna and a Bluetooth headset, aiming to solve the technical problem that the Bluetooth antenna in existing metal-shell Bluetooth headsets is easily interfered with, thus affecting signal transmission.

[0004] To achieve the above objectives, this utility model proposes a Bluetooth antenna disposed within a Bluetooth headset. The Bluetooth headset includes an ear shell, which comprises a metal shell and a plastic shell. The Bluetooth antenna includes:

[0005] A first connecting portion has a first side surface and a second side surface disposed opposite to each other. An antenna radiation area is provided on the first side surface, and the antenna radiation area is located near the side edge of the first side surface.

[0006] The second connecting part is flexibly connected to the first connecting part. The second connecting part has a third side and a fourth side that are disposed opposite to each other. The third side is provided with a reference ground. The reference ground and the antenna radiation area are electrically connected through a line.

[0007] The first connecting portion can be bent relative to the second connecting portion so that the antenna radiation area is positioned away from the metal housing.

[0008] In some embodiments, the first connection portion or the second connection portion is provided with a signal feed point, which is electrically connected to the motherboard inside the Bluetooth headset via a coaxial cable;

[0009] The signal feed point and the antenna radiation area are electrically connected via a line.

[0010] In some embodiments, the signal feed point and the reference ground are spaced apart, and the distance L between the signal feed point and the reference ground satisfies: 2mm≤L≤3mm.

[0011] In some embodiments, the first connecting portion is provided with a reinforcing plate on the first side.

[0012] In some embodiments, the thickness D of the reinforcing plate satisfies: 0.2mm≤D≤0.3mm.

[0013] In some embodiments, the first connecting portion is provided with a first adhesive layer on the second side, and the second connecting portion is provided with a second adhesive layer on the fourth side.

[0014] In some embodiments, a first release film is provided on the side of the first adhesive layer away from the second side, and a second release film is provided on the side of the second adhesive layer away from the fourth side.

[0015] In some embodiments, a flexible connecting portion is provided between the first connecting portion and the second connecting portion.

[0016] Correspondingly, this utility model also proposes a Bluetooth headset, comprising:

[0017] The Bluetooth antenna described in any of the above embodiments;

[0018] The earpiece includes a metal shell and a plastic shell, with a receiving cavity formed between the metal shell and the plastic shell, and the Bluetooth antenna is disposed within the receiving cavity;

[0019] A motherboard is disposed within the receiving cavity and is electrically connected to the Bluetooth antenna via a coaxial cable.

[0020] The first connecting portion of the Bluetooth antenna can be bent relative to the second connecting portion so that the antenna radiation area is positioned away from the metal housing.

[0021] In some embodiments, the motherboard is provided with a cable outlet hole for the coaxial cable to pass through or exit through.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] In the technical solution of this utility model, for a Bluetooth headset with a metal shell, when installing a Bluetooth antenna inside the ear shell, the first connecting part can be bent away from the metal shell relative to the second connecting part. This increases the distance between the antenna radiation area and the metal shell, ensuring that the antenna radiation area is not interfered with by the metal shell when receiving Bluetooth signals. For example, the metal shell is usually located on the outer top wall of the ear shell to ensure a metallic luster, thereby improving the aesthetics and premium feel of the Bluetooth headset. In this case, the first connecting part can be bent to a plastic shell located on the side wall of the ear shell or a plastic shell located at the bottom of the ear shell, so that the antenna radiation area is away from the metal shell. By adopting the above structure, the interference of the metal shell on the antenna radiation area when receiving Bluetooth signals can be reduced, or the interference of the human head on the antenna radiation area when receiving Bluetooth signals can be reduced (when the antenna radiation area is located on the side wall of the ear shell, the side wall of the ear shell will not be blocked by the human head when wearing the over-ear Bluetooth headphones normally, so that the human head will not interfere with the signal transmission of the Bluetooth antenna), thereby ensuring the signal radiation range and signal transmission distance of the Bluetooth antenna, and thus ensuring the communication performance of the over-ear Bluetooth headphones, so that users can get a better music experience.

[0024] Furthermore, placing the antenna radiating area on the first side near the side edge is more conducive to increasing the distance between the antenna radiating area and the metal housing, thereby reducing the adverse effects of the metal housing on the antenna radiating area when receiving Bluetooth signals.

[0025] The Bluetooth headphones using the aforementioned Bluetooth antenna can achieve stable Bluetooth signal transmission, ensuring a comfortable user experience. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a front view of the overall structure of a Bluetooth antenna provided in an embodiment of the present invention; wherein, the Bluetooth antenna is provided with a release film;

[0028] Figure 2 The image shows a rear view of the overall structure of a Bluetooth antenna according to an embodiment of the present invention; wherein the Bluetooth antenna is provided with a release film.

[0029] Figure 3This is a front view of the overall structure of a Bluetooth antenna provided in an embodiment of the present invention; wherein the Bluetooth antenna does not have a release film.

[0030] Figure 4 The image shows a rear view of the overall structure of a Bluetooth antenna according to an embodiment of the present invention; wherein the Bluetooth antenna does not have a release film.

[0031] Figure 5 A schematic diagram of the overall structure of a Bluetooth antenna in the first bent state according to an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the overall structure of a Bluetooth antenna in the second bent state according to an embodiment of the present invention;

[0033] Figure 7 This is a front view of the overall structure of a Bluetooth headset provided in an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the internal structure of a Bluetooth headset provided in an embodiment of the present invention;

[0035] Figure 9 for Figure 8 A magnified view of a section at point A in the middle;

[0036] Figure 10 A side view of the overall structure of a Bluetooth headset provided in an embodiment of this utility model.

[0037] Explanation of icon numbers:

[0038] 10. Bluetooth antenna;

[0039] 20. Bluetooth headset;

[0040] 100. First connecting part;

[0041] 110. First side view; 120. Second side view;

[0042] 111. Antenna radiation area; 112. Reinforcing plate;

[0043] 121. First adhesive layer; 122. First release film;

[0044] 200. Second connecting part;

[0045] 210. Third side view; 220. Fourth side view;

[0046] 211. Reference location;

[0047] 221. Second adhesive layer; 222. Second release film;

[0048] 300, Signal feed point;

[0049] 400, coaxial cable;

[0050] 500. Flexible connection part;

[0051] 600. Ear shell;

[0052] 610. Metal casing; 620. Plastic casing;

[0053] 700, Motherboard;

[0054] 710. Cable outlet.

[0055] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0056] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0057] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0058] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where A and B are simultaneously satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0059] Headphones receive electrical signals from media players or receivers and convert them into audible sound waves using speakers placed close to the ears. For over-ear Bluetooth headphones, the antenna typically uses an onboard inverted F-antenna (IFA) or other types of onboard antennas. The disadvantage of this type of antenna is that it occupies a significant amount of motherboard space. In cases with metal earcups or irregularly shaped and small motherboards, antenna radiation is affected by the metal earcups. Furthermore, the motherboard area is insufficient to support a large onboard antenna, impacting the headphone's signal transmission and interference resistance, ultimately resulting in a poor user experience when enjoying music.

[0060] Based on this, in order to solve the technical problem that the Bluetooth antenna 10 in the existing metal-cased Bluetooth headset 20 is easily interfered with and affects signal transmission, referring to Figures 1 to 10 This utility model provides a Bluetooth antenna 10, which is disposed within a Bluetooth headset 20. The Bluetooth headset 20 includes an ear shell 600, which comprises a metal shell 610 and a plastic shell 620. The Bluetooth antenna 10 includes a first connecting portion 100 and a second connecting portion 200. The first connecting portion 100 has a first side surface 110 and a second side surface 120 disposed opposite to each other. The first side surface 110 is provided with an antenna radiation area 111, which is used to receive Bluetooth signals. The antenna radiation area 111 is disposed near the side of the first side surface 110. The second connecting portion 200 is flexibly connected to the first connecting portion 100. The second connecting portion 200 has a third side surface 210 and a fourth side surface 220 disposed opposite to each other. The third side surface 210 is provided with a reference ground 211 (here, the reference ground 211 refers to a reference point with zero potential or low potential). The reference ground 211 and the antenna radiation area 111 are electrically connected via a circuit. The first connecting portion 100 can be bent relative to the second connecting portion 200 so that the antenna radiation area 111 is positioned away from the metal housing 610. For example, the bent first connecting portion 100 and the second connecting portion 200 can form an acute angle, a right angle, or an obtuse angle. By bending the first connecting portion 100, the setting position of the first connecting portion 100 relative to the second connecting portion 200 can be changed, greatly improving the setting flexibility of the Bluetooth antenna 10.

[0061] Specifically, in this embodiment, for a Bluetooth headset 20 with a metal housing 610, when installing the Bluetooth antenna 10 inside the ear shell 600, the first connecting portion 100 can be bent away from the metal housing 610 relative to the second connecting portion 200, thereby increasing the distance between the antenna radiation area 111 and the metal housing 610, ensuring that the antenna radiation area 111 is not interfered with by the metal housing 610 when receiving Bluetooth signals. For example, the metal housing 610 is typically located on the outer top wall of the ear shell 600 to ensure that the ear shell 600 has a metallic luster, thus improving the aesthetics and premium feel of the Bluetooth headset 20. In this case, the first connecting portion 100 can be bent to the plastic housing 620 located on the side wall of the ear shell 600 or the plastic housing 620 located at the bottom of the ear shell 600, so that the antenna radiation area 111 is away from the metal housing 610. By adopting the above structure, the interference of the metal shell 610 on the antenna radiation area 111 when receiving Bluetooth signals can be reduced, or the interference of the human head on the antenna radiation area 111 when receiving Bluetooth signals can be reduced (when the antenna radiation area 111 is located on the side wall of the ear shell 600, the side wall of the ear shell 600 will not be blocked by the human head when the Bluetooth headset 20 is worn normally, so that the human head will not interfere with the signal transmission of the Bluetooth antenna 10), thereby ensuring the signal radiation range and signal transmission distance of the Bluetooth antenna 10, and thus ensuring the communication performance of the Bluetooth headset 20, so that users can get a better music experience.

[0062] Furthermore, placing the antenna radiation area 111 near the side of the first side 110 is more conducive to increasing the distance between the antenna radiation area 111 and the metal housing 610, thereby reducing the adverse effects of the metal housing 610 on the antenna radiation area 111 when receiving Bluetooth signals.

[0063] By bending the first connecting portion 100 relative to the second connecting portion 200, the Bluetooth antenna 10 gains greater spatial installation flexibility, allowing it to be partially connected to the motherboard 700. Compared to a connection where the Bluetooth antenna 10 is integrally connected to the motherboard 700, the bendable nature of the Bluetooth antenna 10 in this embodiment means it is not limited by the size of the motherboard 700 when connected. Even if the motherboard 700 has an irregular shape or a small size, it can still support the Bluetooth antenna 10, thereby improving the connection flexibility between the Bluetooth antenna 10 and the motherboard 700 and reducing the assembly difficulty and cost of the Bluetooth antenna 10.

[0064] In some embodiments, refer to Figure 1 , Figure 3 , Figure 5 as well as Figure 6The first connecting part 100 or the second connecting part 200 is provided with a signal feed point 300, which is electrically connected to the main board 700 inside the Bluetooth headset 20 via a coaxial cable 400. The signal feed point 300 and the antenna radiation area 111 are electrically connected via a line.

[0065] Specifically, in this embodiment, the Bluetooth headset 20, through a signal feed point 300 located in the first connection portion 100 or the second connection portion 200, enables Bluetooth signals to be transmitted to the mainboard 700 inside the headset via the coaxial cable 400, thereby allowing the Bluetooth headset 20 to receive wireless signals. The signal feed point 300 is electrically connected to the antenna radiation area 111 via internal wiring, ensuring good signal stability during transmission. The antenna radiation area 111 converts the received Bluetooth signal into electromagnetic wave radiation, realizing the wireless communication function of the Bluetooth headset 20, ensuring the completion of the wireless signal reception, transmission, and signal processing process for the Bluetooth headset 20, effectively improving the communication performance and stability of the Bluetooth headset 20.

[0066] In some embodiments, refer to Figure 1 , Figure 3 , Figure 5 as well as Figure 6 The signal feed point 300 and the reference ground 211 are spaced apart, and the distance L between the signal feed point 300 and the reference ground 211 satisfies the condition: 2mm ≤ L ≤ 3mm. For example, the value of L can be 2mm, 2.5mm, 3mm, etc.

[0067] Specifically, in this embodiment, by setting the signal feed point 300 and the reference ground 211 at intervals, it is possible to prevent the signal feed point 300 and the reference ground 211 from directly contacting each other and causing a short circuit, thus ensuring the operational safety of the Bluetooth antenna 10. Setting the spacing between the signal feed point 300 and the reference ground 211 within the aforementioned range serves two purposes. First, it prevents the spacing between the signal feed point 300 and the reference ground 211 from being too small (e.g., 0.5mm, 1mm, 1.5mm, etc.), which could lead to the signal feed point 300 easily coming into direct contact with the reference ground 211 when the first connecting portion 100 bends relative to the second connecting portion 200, thus affecting the safety performance of the Bluetooth antenna 10. Second, it prevents the spacing between the signal feed point 300 and the reference ground 211 from being too large (e.g., 4mm, 5mm, 6mm, etc.), which would increase the overall size of the Bluetooth antenna 10 and affect its installation flexibility.

[0068] In some embodiments, refer to Figure 1 and Figure 3The first connecting portion 100 is provided with a reinforcing plate 112 on the first side 110. For example, the reinforcing plate 112 can be a PI reinforcing plate 112 (i.e., a polyimide reinforcing plate 112).

[0069] Specifically, in this embodiment, the structural strength and stability of the first connection portion 100 are effectively enhanced by providing a reinforcing plate 112. By increasing the thickness and structural rigidity of the first connection portion 100, the reinforcing plate 112 effectively disperses and resists stress concentration caused by external forces, thereby reducing the risk of damage or deformation of the first connection portion 100 due to long-term use and improving its stability and reliability. Furthermore, during product use, especially when the product is subjected to external loads, the reinforcing plate 112 provides reliable support for the first connection portion 100, preventing it from being damaged by external forces, thus improving the durability and load-bearing capacity of the Bluetooth antenna 10.

[0070] The reinforcing plate 112 itself has a certain thickness, so the reinforcing plate 112 can also increase the distance between the antenna radiation area 111 and the metal housing 610, thereby reducing the interference of the metal housing 610 on the antenna radiation area 111 when receiving Bluetooth signals, improving the Bluetooth performance of the Bluetooth headset 20, and ensuring that users get a better music experience.

[0071] In some embodiments, the thickness D of the reinforcing plate 112 satisfies: 0.2mm ≤ D ≤ 0.3mm. For example, the value of D can be 0.2mm, 0.25mm, 0.3mm, etc.

[0072] Specifically, in this embodiment, the thickness of the reinforcing plate 112 is set within the aforementioned range. On the one hand, this prevents the reinforcing plate 112 from being too thin, for example, with a thickness of 0.1mm, 0.15mm, 0.18mm, etc., which would result in the structural strength of the first connecting part 100 remaining weak, and the reinforcing plate 112 still failing to provide effective support for the first connecting part 100. On the other hand, this prevents the reinforcing plate 112 from being too thick, for example, with a thickness of 0.35mm, 0.4mm, 0.45mm, etc., which would result in a large overall thickness of the first connecting part 100, which is not conducive to saving space inside the ear shell 600.

[0073] In some embodiments, refer to Figure 2 and Figure 4The first connecting portion 100 has a first adhesive layer 121 on the second side 120, and the second connecting portion 200 has a second adhesive layer 221 on the fourth side 220. For example, the first adhesive layer 121 and the second adhesive layer 221 can be adhesive backing. A first release film 122 is provided on the side of the first adhesive layer 121 away from the second side 120, and a second release film 222 is provided on the side of the second adhesive layer 221 away from the fourth side 220.

[0074] Specifically, in this embodiment, the first adhesive layer 121 is adhesive, allowing the first connecting portion 100 to be attached to a suitable position. More preferably, when the first connecting portion 100 is not attached, a first release film 122 is provided on the surface of the first adhesive layer 121. When it is necessary to attach the first connecting portion 100, the first release film 122 can be removed.

[0075] Similarly, the second adhesive layer 221 is adhesive, allowing the second connector 200 to be attached to a suitable position. More preferably, when the second connector 200 is not attached, a second release film 222 is provided on the surface of the second adhesive layer 221. When it is necessary to attach the second connector 200, the second release film 222 can be removed.

[0076] In some embodiments, refer to Figures 1 to 6 A flexible connecting portion 500 is provided between the first connecting portion 100 and the second connecting portion 200. The size of the flexible connecting portion 500 can be smaller than the size of the first connecting portion 100 or the size of the second connecting portion 200. The design size of the flexible connecting portion 500 is sufficient to ensure the connection strength between the first connecting portion 100 and the second connecting portion 200.

[0077] Specifically, in this embodiment, compared to the structure in which the first connecting part 100 and the second connecting part 200 are directly connected as one unit, by providing the flexible connecting part 500, it is beneficial to increase the connection interval between the first connecting part 100 and the second connecting part 200, so that there is a larger bending space between the first connecting part 100 and the second connecting part 200, realizing a large bending angle and a large range of bending of the first connecting part 100 relative to the second connecting part 200, thereby improving the assembly flexibility of the Bluetooth antenna 10.

[0078] Correspondingly, another embodiment of this utility model also provides a Bluetooth headset 20, see reference. Figures 7 to 10The over-ear Bluetooth headset 20 includes the Bluetooth antenna 10 in any of the above embodiments. The over-ear Bluetooth headset 20 also includes an ear shell 600 and a mainboard 700. The ear shell 600 includes a metal shell 610 and a plastic shell 620, forming a receiving cavity between the metal shell 610 and the plastic shell 620. The Bluetooth antenna 10 is disposed within the receiving cavity, and the mainboard 700 is disposed within the receiving cavity. The mainboard 700 is electrically connected to the Bluetooth antenna 10 via a coaxial cable 400. The first connecting portion 100 of the Bluetooth antenna 10 is bendable relative to the second connecting portion 200, so that the antenna radiation area 111 is oriented away from the metal shell 610.

[0079] Specifically, in this embodiment, when assembling the Bluetooth headset 20, the Bluetooth antenna 10 and the motherboard 700 are first connected together via a coaxial cable 400 to achieve current conduction between the Bluetooth antenna 10 and the motherboard 700. Then, the first connecting portion 100 is bent relative to the second connecting portion 200 in a direction away from the metal housing 610, so that the antenna radiation area 111 is positioned away from the metal housing 610. For example, the first connecting portion 100 can be bent to the plastic housing 620 on the side wall or the plastic housing 620 at the bottom. With this structure, because the distance between the antenna radiation area 111 and the metal housing 610 is relatively large, the metal housing 610 will not interfere with the effect of the antenna radiation area 111 receiving Bluetooth signals, ensuring the stability of Bluetooth signal transmission and improving the user experience when wearing the Bluetooth headset 20.

[0080] In some embodiments, refer to Figure 8 and Figure 9 The motherboard 700 is provided with a cable exit hole 710, which is used for the coaxial cable 400 to pass through or exit. By providing the cable exit hole 710, it is beneficial to organize the coaxial cable 400 wiring harness, improve the fixed stability of the coaxial cable 400, and also improve the connection flexibility between the Bluetooth antenna 10 and the motherboard 700, and optimize the internal structure of the earpiece 600.

[0081] Thanks to the improvements to the Bluetooth antenna 10 described above, the over-ear Bluetooth headset 20 of this embodiment has the same technical effect as the Bluetooth antenna 10 described above, which will not be repeated here.

[0082] It should be noted that other aspects of the Bluetooth antenna 10 and the Bluetooth headset 20 disclosed in this utility model can be found in the prior art, and will not be repeated here.

[0083] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A Bluetooth antenna, disposed within a Bluetooth headset, the Bluetooth headset comprising an ear shell, the ear shell comprising a metal shell and a plastic shell, characterized in that, The Bluetooth antenna includes: A first connecting portion has a first side surface and a second side surface disposed opposite to each other. An antenna radiation area is provided on the first side surface, and the antenna radiation area is located near the side edge of the first side surface. The second connecting part is flexibly connected to the first connecting part. The second connecting part has a third side and a fourth side that are disposed opposite to each other. The third side is provided with a reference ground. The reference ground and the antenna radiation area are electrically connected through a line. The first connecting portion can be bent relative to the second connecting portion so that the antenna radiation area is positioned away from the metal housing.

2. The Bluetooth antenna according to claim 1, characterized in that, The first connecting part or the second connecting part is provided with a signal feeding point, and the signal feeding point is electrically connected to the motherboard inside the over-ear Bluetooth headset via a coaxial cable; The signal feed point and the antenna radiation area are electrically connected via a line.

3. The Bluetooth antenna according to claim 2, characterized in that, The signal feed point and the reference ground are spaced apart, and the distance L between the signal feed point and the reference ground satisfies: 2mm≤L≤3mm.

4. The Bluetooth antenna according to claim 1, characterized in that, The first connecting portion is provided with a reinforcing plate on the first side.

5. The Bluetooth antenna according to claim 4, characterized in that, The thickness D of the reinforcing plate satisfies: 0.2mm≤D≤0.3mm.

6. The Bluetooth antenna according to claim 1, characterized in that, The first connecting portion has a first adhesive layer on the second side, and the second connecting portion has a second adhesive layer on the fourth side.

7. The Bluetooth antenna according to claim 6, characterized in that, A first release film is provided on the side of the first adhesive layer away from the second side, and a second release film is provided on the side of the second adhesive layer away from the fourth side.

8. The Bluetooth antenna according to any one of claims 1 to 7, characterized in that, A flexible connecting part is provided between the first connecting part and the second connecting part.

9. A Bluetooth headset, characterized in that, include: The Bluetooth antenna according to any one of claims 1 to 8; The earpiece includes a metal shell and a plastic shell, with a receiving cavity formed between the metal shell and the plastic shell, and the Bluetooth antenna is disposed within the receiving cavity; A motherboard is disposed within the receiving cavity and is electrically connected to the Bluetooth antenna via a coaxial cable. The first connecting portion of the Bluetooth antenna can be bent relative to the second connecting portion so that the antenna radiation area is positioned away from the metal housing.

10. The over-ear Bluetooth headset according to claim 9, characterized in that, The motherboard is provided with a cable outlet hole, which is used for the coaxial cable to pass through or exit.

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