Bluetooth antenna assembly and earphone

Abstract

The embodiment of the utility model discloses a Bluetooth antenna assembly and an earphone, a radiation pattern is arranged on the outer surface of an ear rod, and a connector is arranged at one end of the ear rod, so that the orientation of an assembly groove is opposite to the orientation of the radiation pattern. Therefore, when a user wears the Bluetooth earphone, the radiation pattern can just face the side, away from the face of the user, of the ear rod, so that the user can communicate with a mobile phone through the Bluetooth earphone. Therefore, the radiation efficiency and sensitivity of the radiation assembly to the Bluetooth signal are improved.

Description

[0001] This application is a divisional application of the Chinese patent application with the application date of November 14, 2023, application number "202323073836.8", and name "Earphone Antenna Assembly and Earphone". Technical Field

[0002] The utility model relates to the technical field of communications, in particular to a Bluetooth antenna component and an earphone. Background Art

[0003] The internal space of the headset is small, especially for Bluetooth headsets, which also need to be equipped with a Bluetooth antenna, which makes the internal components more compact. It also makes it difficult to arrange the antenna. How to optimize the antenna arrangement, improve the antenna's radiation efficiency, and reduce the space occupied by the internal components of the headset has become a problem that needs to be solved. Utility Model Content

[0004] In view of this, an embodiment of the utility model provides a Bluetooth antenna assembly and earphone, wherein an excitation part and a deployment frame are disposed together in a receiving groove, and a radiation pattern is disposed on the ear rod to simplify the arrangement of the radiation assembly.

[0005] According to a first aspect of an embodiment of the utility model, an earphone antenna assembly is provided, the earphone antenna assembly comprising:

[0006] The shell portion includes an ear rod and a laying frame, the ear rod has a receiving groove, the outer side surface of the ear rod or the inner side wall of the receiving groove is provided with a first laying area, the laying frame is provided with a second laying area, and the laying frame is arranged in the receiving groove, the first laying area corresponds to the second laying area at least partially, and part of the second laying area is recessed in a direction away from the first laying area and forms a accommodating area for accommodating the end of the coaxial feeder with the side wall of the receiving groove;

[0007] A radiation component, comprising an excitation part and a radiation pattern, wherein the excitation part comprises a feeding pattern and a grounding pattern and is arranged in the second arrangement area, and the radiation pattern is arranged in the first arrangement area;

[0008] The feeding pattern includes a first branch, one end of which is provided with a feeding area, the grounding pattern includes a second branch, one end of which is provided with a grounding area adjacent to the feeding area, the second branch extends parallel to the first branch and a first coupling gap is formed on the opposite side;

[0009] The radiation pattern is coupled with the excitation part, and radiates the electromagnetic signal of the excitation part to the outside of the shell part.

[0010] Furthermore, the ground pattern further includes a third branch node, the third branch node extends parallel to the second branch node and is located on a side of the first branch node away from the second branch node, and an open circuit end of the third branch node extends toward a side of the first branch node where the feeding area is set;

[0011] The third branch at least partially corresponds to the second branch and a second coupling gap is formed on the opposite side.

[0012] Further, the ground pattern also includes a rectangular piece;

[0013] The second branch comprises a first section and a second section connected to each other in the extension direction, and the width of the first section is greater than that of the second section;

[0014] The third branch and one end of the first segment away from the second segment are connected to the rectangular sheet, and the third branch, the first segment and part of the first segment form a second coupling gap.

[0015] Furthermore, the feeding pattern further includes:

[0016] A first connecting piece is disposed at one end of the first branch node close to the grounding area, and a portion of the first connecting piece and an end of the first branch node together form a feeding area;

[0017] The first section is flush with the second section on one side away from the third branch;

[0018] The open end of the first branch corresponds to a partial area of ​​the end of the first section and has a predetermined distance therebetween.

[0019] Furthermore, at least part of the feeding area is connected to one end of the first branch, the grounding area is arranged close to one end of the second branch, and the grounding area and the feeding area are arranged at intervals along the extension direction of the first branch.

[0020] Furthermore, the feeding pattern further includes:

[0021] A first connecting piece is arranged at one end of the first branch close to the grounding area and forms a feeding area;

[0022] The ground pattern also includes:

[0023] A second connecting piece is spaced apart from the first connecting piece, the second connecting piece is parallel to the side opposite to the first connecting piece and is perpendicular to the extension direction of the second branch, the second connecting piece is connected to an end of the second branch close to the first connecting piece, and the second connecting piece forms a grounding area;

[0024] The second connecting piece extends along the width direction of the second branch toward the side of the second branch close to the first branch, and the length of the side of the first connecting piece away from the second branch is shorter than the length of the side close to the second branch.

[0025] Furthermore, the grounding pattern further includes a rectangular piece, which is connected to the second branch and the third branch at one end away from the first branch, and the first branch corresponds to the center of the rectangular piece.

[0026] Further, the open end of the first branch is located in the second coupling gap and has a predetermined distance from the rectangular sheet.

[0027] Furthermore, the feeding pattern further includes a first connecting piece, and the first connecting piece is connected to one end of the first branch;

[0028] The ground pattern further includes a second connecting piece, which is disposed at the end of the second branch and connected to the side of the second branch close to the first branch;

[0029] The first connecting piece and the second connecting piece are both rectangular and form a feeding area and a grounding area respectively.

[0030] Furthermore, the open end of the third branch extends toward the second connecting piece, and the first branch is located in the second coupling gap.

[0031] Further, the feeding pattern includes a fourth branch, the fourth branch extends parallel to the first branch, and one end of the first branch away from the feeding area is connected to the middle area of ​​the fourth branch.

[0032] Furthermore, one end of the first branch away from the feeding region is connected to the middle region of the second branch.

[0033] Furthermore, the shell also includes a connector having an assembly groove, the connector is arranged at one end of the ear rod and the assembly groove faces the side of the ear rod;

[0034] The first layout area is located on a side of the outer side of the ear rod away from the assembly groove, and the first layout area extends from one end of the ear rod to the other end and bends in a direction away from the assembly groove;

[0035] The second layout area extends along the length direction of the ear stem and has a first curved surface and a curved surface area in the extending direction. The curved surface area includes two second curved surfaces and a third curved surface. The first curved surface and the two second curved surfaces are consistent with the bending direction of the first layout area. The third curved surface is connected between the two second curved surfaces and bends in a direction away from the first layout area.

[0036] The grounding area and the feeding area are arranged on the third arc surface and are spaced apart along the extending direction of the third arc surface. The second branch extends from the second arc surface to the first arc surface.

[0037] Further, the accommodating slot includes a battery slot and a layout frame slot, the battery slot is connected to the layout frame slot and extends along the ear rod, and the layout frame slot is located between the first layout area and the battery slot;

[0038] The layout rack slot is adapted to the layout rack shape, and the side wall of the layout rack slot includes two positioning surfaces;

[0039] The laying frame has an avoidance surface and two positioning edges, the avoidance surface is away from the second laying area and is located between the two positioning edges;

[0040] The laying frame is arranged in the laying frame slot, the avoidance surface faces the battery slot to avoid the battery, and the two positioning edges are arranged on the two positioning surfaces.

[0041] In a second aspect, an embodiment of the utility model further provides an earphone, the earphone comprising:

[0042] The shell portion includes an ear rod and a laying frame, the ear rod has a receiving groove, the outer side surface of the ear rod or the inner side wall of the receiving groove is provided with a first laying area, the laying frame is provided with a second laying area, and the laying frame is arranged in the receiving groove, the first laying area corresponds to the second laying area at least partially, and part of the second laying area is recessed in a direction away from the first laying area and forms an accommodating area for accommodating the end of the coaxial feeder with the receiving groove;

[0043] A radiation component, comprising an excitation part and a radiation pattern, wherein the excitation part comprises a feeding pattern and a grounding pattern and is arranged in the second arrangement area, and the radiation pattern is arranged in the first arrangement area;

[0044] The feeding pattern comprises a first branch, one end of which is provided with a feeding area, and the grounding pattern comprises a second branch, one end of which is provided with a grounding area, and the feeding area and the grounding area are located in the accommodating area;

[0045] A coaxial feeder, comprising an outer conductor and an inner conductor located inside the outer conductor, one end of the coaxial feeder extends to the accommodation area and the outer conductor is electrically connected to the grounding area, and the inner conductor is electrically connected to the feeding area;

[0046] The radiation pattern is coupled with the excitation part and radiates the electromagnetic signal of the excitation part to the outside of the shell part.

[0047] Further, the first layout area is located on the outer wall of the ear rod, and the first layout area extends from one end of the ear rod to the other end and bends toward the side of the ear rod;

[0048] The second layout area extends along the length direction of the ear stem and has a first curved surface and a curved surface area in the extending direction. The curved surface area includes two second curved surfaces and a third curved surface. The first curved surface and the two second curved surfaces are consistent with the bending direction of the first layout area. The third curved surface is connected between the two second curved surfaces and bends in a direction away from the first layout area.

[0049] The grounding area and the feeding area are located on the third arc surface and are spaced apart along the extension direction of the third arc surface, and the second branch extends from the second arc surface to the first arc surface;

[0050] The accommodating groove includes a layout frame groove, and the layout frame groove corresponds to the first layout area;

[0051] The laying frame is arranged in the laying frame groove, and a receiving area is formed between the third arc surface and the side wall of the laying frame groove.

[0052] The Bluetooth antenna assembly and earphone of the embodiment of the utility model set the radiation pattern on the ear rod, and set the excitation part on the layout frame. At the same time, when the layout frame is set in the accommodating groove, the excitation part can correspond to the radiation pattern and couple with each other. Therefore, on the one hand, the electromagnetic signal is generated by the excitation part, and sent by the radiation pattern. Thereby, the radiation efficiency and sensitivity of the radiation assembly to the electromagnetic signal are improved. The blocking of the electromagnetic signal by the shell is reduced or even avoided. On the other hand, the excitation part can be processed together with the ear rod, and the radiation pattern can be processed together with the layout frame, thereby simplifying the processing difficulty of the earphone antenna assembly and reducing the manufacturing cost. At the same time, when the form of the excitation part or the radiation pattern changes, only the form of the excitation part or the radiation pattern can be changed in a targeted manner, thereby improving the flexibility of the product. On the other hand, by using the accommodating area formed between the second layout area and the accommodating groove, it is convenient to electrically connect the excitation part with the coaxial feeder, and make the structure of the earphone antenna assembly more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The above and other purposes, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0054] Figure 1 It is a schematic diagram of the structure of the earphone of an embodiment of the utility model;

[0055] Figure 2 is an exploded schematic diagram of an earphone according to an embodiment of the utility model;

[0056] Figure 3 is an exploded schematic diagram of a radiation component of an embodiment of the utility model;

[0057] Figure 4 It is an exploded schematic diagram of the excitation part, the coaxial feeder and the routing frame of the embodiment of the utility model;

[0058] Figure 5 It is a schematic diagram of the structure of the shell, the deployment frame and the coaxial feeder of an embodiment of the utility model;

[0059] Figure 6 is a schematic axial cross-sectional view of an ear rod according to an embodiment of the utility model;

[0060] Figure 7 It is a schematic structural diagram of the excitation part and the radiation pattern of the embodiment of the utility model in the axial direction of the ear rod;

[0061] Figure 8 It is a simulation schematic diagram of the electromagnetic signal on the excitation part of the embodiment of the utility model;

[0062] Fig. 9 It is a structural schematic diagram of the excitation unit of an embodiment of the utility model;

[0063] Fig.10 is a schematic diagram of the structure of the radiation component of the embodiment of the utility model in some implementation modes;

[0064] Fig.11 It is a schematic diagram of the structure of the radiation component of the embodiment of the utility model in other implementation modes;

[0065] Fig.12 is a schematic structural diagram of the radiation component of the embodiment of the utility model in some other implementation modes;

[0066] Fig.13 is a schematic structural diagram of a radiation component in some further implementations of an embodiment of the utility model;

[0067] Fig.14 is a schematic structural diagram of a radiation component in some further implementations of an embodiment of the utility model;

[0068] Fig.15 It is a Smith simulation schematic diagram of the radiation component of the embodiment of the utility model.

[0069] Description of reference numerals:

[0070] 1- Radiating components;

[0071] 11-excitation part; 12-radiation pattern;

[0072] 13-feeding pattern; 131-first branch; 132-fourth branch;

[0073] 133-first connecting piece; 1331-hypotenuse;

[0074] 14- ground pattern; 141- second branch; 1411- first section; 1412- second section;

[0075] 142- rectangular piece; 143- second connecting piece; 144- third branch;

[0076] 15-feeding area; 16-grounding area;

[0077] 2-shell;

[0078] 21-ear rod; 211-opening end; 212-blocking member;

[0079] 22-layout frame; 221-avoidance surface; 222-positioning edge;

[0080] 23-accommodating tank;

[0081] 231-layout rack slot; 2311-positioning surface;

[0082] 232-battery slot;

[0083] 24-connector; 241-assembly groove;

[0084] 25- Accommodation area;

[0085] 31- first layout area;

[0086] 32-second layout area; 321-first arc surface; 322-second arc surface; 323-third arc surface;

[0087] 33-curved area;

[0088] 41-first coupling gap; 42-second coupling gap;

[0089] 5-coaxial feed line;

[0090] 51-outer conductor; 52-inner conductor;

[0091] 61-battery; 62-control circuit; 63-sound unit. DETAILED DESCRIPTION

[0092] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. For those skilled in the art, the present invention can be fully understood without the description of these details. In order to avoid confusing the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0093] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0094] Unless the context clearly requires otherwise, the words "include", "comprising" and similar words throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0095] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0096] Unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0097] For ease of explanation, spatially relative terms such as "inside", "outside", "below", "below", "lower", "above", "upper", etc. are used herein to describe the relationship of one element or feature illustrated in the figures to another element or feature. It will be understood that spatially relative terms may be intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figure is turned over, an element described as being "below" or "below" other elements or features will then be positioned as being "above" the other elements or features. Thus, the example term "below" can include both the orientations of above and below. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0098] Figure 1 2 is a schematic diagram of the structure of the earphone of this embodiment. Figure 1 The outline of the middle radiation pattern 12 is shown by a dotted line, and the radiation component 1 is covered with a shield.

[0099] Figure 2 Schematic diagram of an exploded view of the earphone of this embodiment. Figure 2 The outline of the central radiating element 1 is shown with a thick solid line. Figure 3 It is an exploded schematic diagram of the radiation component 1 of this embodiment. Figure 4 1 is an exploded schematic diagram of the excitation unit 11, the coaxial feeder 5 and the routing frame 22 of this embodiment. The outline of the radiation component 1 is shown with a thick solid line.

[0100] Specifically, the radiation component 1 in this embodiment can be used to send and receive Bluetooth signals. For example, a wireless headset is connected to a mobile phone through the radiation component 1 in this embodiment to send and receive sound signals. Unless otherwise specified, the radiation component 1 sending and receiving Bluetooth signals is used as an example below.

[0101] Figure 5 It is a schematic diagram of the structure of the shell 2, the routing frame 22 and the coaxial feeder 5 of this embodiment. Figure 6 2 is a schematic axial cross-sectional view of the ear rod 21 of this embodiment. The radiation component 1 is not shown in either figure.

[0102] Figure 71 is a schematic diagram of the structure of the excitation part 11 and the radiation pattern 12 of this embodiment in the axial direction of the ear rod 21. The outline of the radiation component 1 in the figure is shown by a thick solid line. Figure 8 1 is a simulation schematic diagram of the electromagnetic signal on the excitation part 11 of this embodiment. The outline of the excitation part 11 is shown by dotted lines, and arrows are used to show the flow direction of the electromagnetic signal on the feeding pattern 13 and the ground pattern 14. The size of the arrow can represent the strength of the electromagnetic signal.

[0103] Fig. 9 1 is a schematic diagram of the structure of the excitation part 11 of this embodiment. The edges of the excitation part 11 corresponding to the first coupling slot 41 and the second coupling slot 42 in the figure are shown with thick solid lines. The feeding area 15 and the grounding area 16 are the areas shown by the cross-hatching lines.

[0104] Figure 10-Figure 14 It is a schematic diagram of the structure of the radiation component 1 in different implementations.

[0105] In some embodiments, Figure 1-Figure 2 As shown, the earphone antenna assembly in this embodiment includes a radiation assembly 1 and a shell 2. The shell 2 includes an ear rod 21 and a mounting frame 22. The ear rod 21 has a receiving groove 23, and the outer side surface of the ear rod 21 or the inner side wall of the receiving groove 23 is provided with a first mounting area 31. The mounting frame 22 is provided with a second mounting area 32, and the mounting frame 22 is arranged in the receiving groove 23. The first mounting area 31 corresponds to the second mounting area 32 at least partially, and part of the second mounting area 32 is recessed in a direction away from the first mounting area 31 and forms a mounting area 25 for accommodating the end of the coaxial feeder 5 between the side walls of the receiving groove 23.

[0106] Further reference Figure 3-Figure 4 and Figure 7-9 As shown, the radiation component 1 includes an excitation portion 11 and a radiation pattern 12 . The excitation portion 11 includes a feeding pattern 13 and a grounding pattern 14 and is arranged in the second arrangement area 32 . The radiation pattern 12 is arranged in the first arrangement area 31 .

[0107] The feeding pattern 13 includes a first branch 131. A feeding area 15 is provided at one end of the first branch 131, and the grounding pattern 14 includes a second branch 141. A grounding area 16 is provided at one end of the second branch 141, and the feeding area 15 and the grounding area 16 are located in the accommodation area 25. The radiation component 1 is configured such that the radiation pattern 12 is coupled with the excitation part 11, and the electromagnetic signal of the excitation part 11 is radiated to the outside of the shell 2.

[0108] The excitation part 11 in this embodiment is used to couple the electromagnetic signal to the radiation pattern 12, and further communicate with the electronic device (such as a mobile phone or a tablet computer, etc.) outside the earphone through the radiation pattern 12. Among them, the radiation pattern 12 is arranged on the ear rod 21. When the radiation pattern 12 receives the electromagnetic signal of the excitation part 11, it can be convenient to radiate the electromagnetic signal to a nearby mobile phone. At the same time, it is also convenient to receive the signal of the mobile phone through the radiation pattern 12 and send it to the excitation part 11.

[0109] Thus, on the one hand, the communication distance between the mobile phone and the Bluetooth headset is increased, and the signal strength and sensitivity are improved. On the other hand, the first layout area 31 and the second layout area 32 are arranged correspondingly, so that the radiation pattern 12 is close to the excitation part 11. Therefore, the electromagnetic signal on the excitation part 11 can be radiated in the direction where the radiation pattern 12 is arranged on the ear rod 21, reducing the interference of the electromagnetic signal to other components in the Bluetooth headset.

[0110] In summary, the earphone antenna assembly of this embodiment sets the radiation pattern 12 on the ear rod 21, and sets the excitation part 11 on the deployment frame 22. At the same time, when the deployment frame 22 is set in the receiving groove 23, the excitation part 11 can correspond to the radiation pattern 12 and couple with each other. Therefore, on the one hand, the electromagnetic signal is generated by the excitation part 11, and the radiation pattern 12 is used to send it. Thereby, the radiation efficiency and sensitivity of the radiation component 1 to the electromagnetic signal are improved. The blocking of the electromagnetic signal by the shell 2 is reduced or even avoided. On the other hand, the excitation part 11 can be processed together with the ear rod 21, and the radiation pattern 12 can be processed together with the deployment frame 22. Thereby, the processing difficulty of the earphone antenna assembly is simplified and the manufacturing cost is reduced. At the same time, when the form of the excitation part 11 or the radiation pattern 12 changes, only the form of the excitation part 11 or the radiation pattern 12 can be changed in a targeted manner, thereby improving the flexibility of the product. On the other hand, by utilizing the accommodation area 25 formed between the second layout area 32 and the accommodation groove 23 , it is possible to facilitate the electrical connection between the excitation part 11 and the coaxial feed line 5 , and make the structure of the earphone antenna assembly more compact.

[0111] Furthermore, if Figure 8 As shown, the ground pattern 14 further includes a third branch 144. The third branch 144 extends parallel to the second branch 141 and is located on a side of the first branch 131 away from the second branch 141. The open end of the third branch 144 extends toward a side of the first branch 131 where the feed area 15 is disposed. The ground area 16 is disposed adjacent to the feed area 15.

[0112] The second branch 141 extends parallel to the first branch 131 and a first coupling gap 41 is formed on the opposite side. The third branch 144 at least partially corresponds to the second branch 141 and a second coupling gap 42 is formed on the opposite side.

[0113] The feeding pattern 13 and the grounding pattern 14 in this embodiment are spaced apart from each other, and the guided electromagnetic wave on the feeding pattern 13 is coupled to the grounding pattern 14 through the first coupling slot 41, and the conduction path of the guided electromagnetic wave on the grounding pattern 14 is reduced by the second coupling slot 42, so as to enhance the radiation performance of the radiating component 1.

[0114] Easy to understand, further reference Fig. 9 As shown, the width and length of the first coupling slot 41 in the figure are distance L1 and distance L2, respectively. The sum of the lengths of the thick solid line and the thick dashed line at the first coupling slot 41 is related to the coupling amount of the electromagnetic signal between the excitation part 11 and the radiation pattern 12. For example, when it is necessary to increase the coupling amount between the feeding pattern 13 and the ground pattern 14, those skilled in the art can reduce the distance L1 and increase the size of the distance L2. The length and width of the second coupling slot 42 in the figure are distance L3 and distance L4, respectively. The overall length of the thick solid line at the second coupling slot 42 is related to the operating frequency band of the radiation component 1. Its length can be configured as a quarter wavelength of the operating frequency band of the radiation component 1. The length of the third branch 144 in the figure is distance L5, and its length is also related to the operating frequency band of the radiation component 1. The length of the third branch 144 can also be configured as a quarter wavelength of the operating frequency band of the radiation component 1. Those skilled in the art can adjust the lengths of distance L3, distance L4 and distance L5 to match the operating frequency band of the Bluetooth signal.

[0115] In some embodiments, Figure 8-Figure 9 As shown, the ground pattern 14 further includes a rectangular piece 142 .

[0116] The second branch 141 includes a first section 1411 and a second section 1412 connected to each other in the extension direction. The width of the first section 1411 is greater than that of the second section 1412. The third branch 144 and an end of the first section 1411 away from the second section 1412 are connected to the rectangular sheet 142, and the third branch 144, the first section 1411 and a part of the first section 1411 form a second coupling gap 42.

[0117] In this embodiment, the first section 1411 is closer to the third branch 144 than the second section 1412 , thereby reducing the width of part of the second coupling gap 42 and improving the radiation intensity of the radiation component 1 to the electromagnetic signal.

[0118] In some embodiments, Fig. 9 As shown, the feeding pattern 13 further includes a first connecting piece 133. The first connecting piece 133 is disposed at one end of the first branch 131 close to the grounding area 16, and part of the first connecting piece 133 and the end of the first branch 131 together form the feeding area 15. The first section 1411 and the second section 1412 are flush with one side away from the third branch 144.

[0119] The open end of the first branch 131 corresponds to a portion of the end of the first section 1411 and has a predetermined distance therebetween. In this embodiment, the first section 1411 and the second section 1412 extend in the same direction, and a portion of the side edge of the first section 1411 close to the first branch 131 is connected to the second section 1412, and the remaining portion of the area is staggered from the second section 1412 and corresponds to the first branch 131.

[0120] In this embodiment, the open end of the first branch 131 maintains a certain distance from the second section 1412 to prevent the electromagnetic signal on the feeding pattern 13 from being directly coupled to the first section 1411, thereby reducing the conduction length of the guided electromagnetic wave on the ground pattern 14. At the same time, the first connecting piece 133 can also increase the area of ​​the feeding region 15, so that the coaxial feed line 5 can feed the guided electromagnetic wave thereto.

[0121] In some embodiments, Figure 8-Figure 9 As shown, at least part of the feeding area 15 is arranged at one end of the first branch 131, and the grounding area 16 is arranged near one end of the second branch 141, and the grounding area 16 and the feeding area 15 are arranged at intervals along the extension direction of the first branch 131. The arrangement of the feeding area 15 and the grounding area 16 in this embodiment can facilitate the coaxial feed line 5 to be connected to the excitation part 11 through the inner conductor 52 and the outer conductor 51 respectively.

[0122] The inner conductor 52 may be a core of the coaxial feeder 5, and the outer conductor 51 may be a braided layer for shielding electromagnetic signals. The core and the braided layer are welded to the feeding area 15 and the grounding area 16 respectively by welding technology, so as to realize the electrical connection between the coaxial feeder 5 and the excitation part 11 at the same time, and fix the two together.

[0123] In some embodiments, Fig. 9 As shown, the feeding pattern 13 further includes a first connecting piece 133. The first connecting piece 133 is disposed at one end of the first branch 131 close to the grounding area 16, and forms the feeding area 15.

[0124] Meanwhile, the grounding pattern 14 further includes a second connecting piece 143. The second connecting piece 143 is spaced apart from the first connecting piece 133, and the side edges of the second connecting piece 143 opposite to the first connecting piece 133 are parallel and perpendicular to the extending direction of the second branch 141. The second connecting piece 143 is connected to one end of the second branch 141 close to the first connecting piece 133, and the second connecting piece 143 forms a grounding area 16.

[0125] The second connecting piece 143 extends along the width direction of the second branch 141 toward the side of the second branch 141 close to the first branch 131, and the length of the side of the first connecting piece 133 away from the second branch 141 is shorter than the length of the side close to the second branch 141. In this embodiment, the first connecting piece 133 and the second connecting piece 143 are both arranged on the side of the first branch 131 away from the second branch 141, so that the coaxial feed line 5 can feed the excitation part 11.

[0126] Specifically, the side edges of the first connecting piece 133 and the second connecting piece 143 on the opposite side extend in parallel, and the second connecting piece 143 has a bevel 1331. The bevel 1331 is disposed on a side away from the second connecting piece 143 and is inclined toward the second connecting piece 143. That is, the end away from the second branch 141 is closer to the grounding area 16 than the end close to the second branch 141. Therefore, further referring to Figure 8 As shown, the open end of the third branch 144 in this embodiment extends toward the first connecting piece 133 , and the distance between the first connecting piece 133 and the open end of the third branch 144 can be ensured by the bevel 1331 , thereby preventing the electromagnetic signal fed into the feeding pattern 13 from being directly coupled to the third branch 144 .

[0127] Table 1

[0128]

[0129] Table 1 is a schematic diagram of the radiation performance test results of the antenna set in the earphone in the prior art.

[0130] Table 2

[0131]

[0132] Table 2 is a schematic diagram of the radiation performance test results of the radiation component 1 provided in the earphone in the above embodiment.

[0133] The channels in Table 1 and Table 2 are in different positions. L and R of the test equipment in the figure represent the earphone worn on the left ear and the earphone worn on the right ear of the user, respectively. It can be seen from the figure that the radiation function and sensitivity of the radiation component 1 in the above embodiment are better than the earphone antenna in the prior art. Fig.15 is a Smith simulation diagram of the radiation component 1 in the above embodiment. Fig.15 As shown, in the frequency band of 2402MHz-2480MHz, some points are concentrated in the center of the Smith chart. It can be seen that the radiation component 1 has a good impedance matching characteristic.

[0134] Preferably, if Figure 8As shown, in the width direction of the first branch 131, the open end of the first branch 131 corresponds to the open end of the third branch 144. That is, the open end of the first branch 131 is simultaneously located between the second branch 141 and the third branch 144. Thus, part of the guided electromagnetic wave fed from the feeding area 15 can also be coupled to the third branch 144 through the open end of the first branch 131, further widening the working frequency band of the excitation unit 11.

[0135] In some embodiments, Figure 10-12 As shown, the ground pattern 14 further includes a rectangular piece 142 . The rectangular piece 142 is connected to the ends of the second branch 141 and the third branch 144 away from the first branch 131 , and the first branch 131 corresponds to the center of the rectangular piece 142 .

[0136] Specifically, the length direction of the rectangular piece 142 in this embodiment is consistent with the first branch 131, and the width of the rectangular piece 142 is greater than the widths of the second branch 141 and the third branch 144. The rectangular piece 142, the first branch 131, and the third branch 144 are aligned with the sides away from the grounding area 16, and the widths of the second branch 141 and the third branch 144 are the same in the extension direction.

[0137] In this embodiment, by configuring the width of the rectangular sheet 142, the width of the second coupling slot 42 is increased, so that the transmission distance of the guided electromagnetic wave on the ground pattern 14 is longer, and the transmission of the guided electromagnetic wave is more convenient. Those skilled in the art can adjust the width of the first coupling slot 41 and the second coupling slot 42 at the same time by changing the width of the rectangular sheet 142. Thus, the operating frequency of the radiation component 1 is easily adjusted.

[0138] In some embodiments, Figure 10-11 As shown, the open end of the first branch 131 is located in the second coupling slot 42 and has a predetermined distance from the rectangular sheet 142. In this embodiment, the open end of the first branch 131 can be coupled with the second branch 141 and the third branch 144 at the same time to couple the guided electromagnetic wave to the ground pattern 14 through the second coupling slot 42, further improving the signal coupling strength of the excitation unit 11.

[0139] In some embodiments, Figure 10-12 As shown, the feeding pattern 13 further includes a first connecting piece 133. The first connecting piece 133 is connected to one end of the first branch 131. The grounding pattern 14 further includes a second connecting piece 143. The second connecting piece 143 is disposed at the end of the second branch 141 and is connected to the side of the second branch 141 close to the first branch 131. The first connecting piece 133 and the second connecting piece 143 are both rectangular and form the feeding area 15 respectively.

[0140] Therefore, when the second layout area 32 is configured to be bent to one side, the contact area between the coaxial feed line 5 and the grounding area 16 and the grounding area 16 can be increased, so as to facilitate the connection between the coaxial feed line 5 and the excitation part 11 .

[0141] In some embodiments, Fig.12 As shown, the open end of the third branch 144 extends toward the second connecting piece 143 , and the first branch 131 is located in the second coupling gap 42 .

[0142] In this embodiment, the first coupling slot 41 is located inside the second coupling slot 42 , so that the guided electromagnetic wave on the first branch 131 can be coupled with the second branch 141 and the third branch 144 at the same time, greatly increasing the coupling strength of the signal between the feeding pattern 13 and the ground pattern 14 .

[0143] In some embodiments, Fig.13 As shown, the feeding pattern 13 includes a fourth branch 132 , which extends parallel to the first branch 131 , and one end of the first branch 131 away from the feeding region 15 is connected to the middle area of ​​the fourth branch 132 .

[0144] Specifically, the length of the fourth branch 132 is configured to be twice that of the first branch 131, and the fourth branch 132 partially corresponds to the second branch 141. The electromagnetic signal on the feeding pattern 13 in this embodiment can be coupled simultaneously between the first branch 131 and the fourth branch 132, between the first branch 131 and the second branch 141, and between the fourth branch 132 and the second branch 141, so as to improve the coupling strength of the guided electromagnetic wave between the feeding pattern 13 and the ground pattern 14.

[0145] In some embodiments, Fig.14 As shown, one end of the first branch 131 away from the feeding region 15 is connected to the middle region of the second branch 141 .

[0146] Specifically, the second branch 141 in this embodiment is approximately twice the length of the first branch 131, and the first branch 131 is directly connected to the second branch 141. The feeding pattern 13 and the ground pattern 14 in this embodiment can be equivalent to an IFA antenna, that is, a quarter wavelength of the working frequency band of the radiation component 1 is also related to the overall length of the second branch 141. As a result, the shape of the excitation part 11 is simplified.

[0147] Alternatively, if Fig.11 As shown, the area of ​​the first layout area 31, that is, the size of the radiation pattern 12 can be configured in various forms. For example, it corresponds to a part of the excitation portion 11 and is arranged at one end of the first layout area 31 close to the first connecting piece 133. For another example, it corresponds to a part of the excitation portion 11 and is arranged at one end of the first layout area 31 close to the grounding area 16.

[0148] Those skilled in the art may also adjust the size of the radiation pattern 12 according to the sensitivity requirements of the radiation component 1. For example, when the radiation component 1 is required to have a higher sensitivity, the layout area of ​​the radiation component 1 may be increased accordingly to facilitate the radiation pattern 12 to receive and send electromagnetic signals.

[0149] In some embodiments, Figure 2 and Figure 5 As shown, the shell 2 further includes a connector 24, the connector 24 has an assembly groove 241, the connector 24 is disposed at one end of the ear rod 21 and the assembly groove 241 faces the side of the ear rod 21. The first layout area 31 is located on the side of the outer side of the ear rod 21 away from the assembly groove 241, and the first layout area 31 extends from one end of the ear rod 21 to the other end and bends in a direction away from the assembly groove 241. The assembly groove 241 in this embodiment can be used to accommodate the sound unit 63.

[0150] Thus, when the user wears the Bluetooth headset, the radiation pattern 12 can be just toward the side of the ear stem 21 away from the user's face, so that the user can communicate with the mobile phone through the Bluetooth headset.

[0151] Meanwhile, the second layout area 32 extends along the length direction of the ear rod 21, and has a first curved surface 321 and a curved surface area 33 in the extending direction. The curved surface area 33 includes two second curved surfaces 322 and a third curved surface 323. The first curved surface 321 and the two second curved surfaces 322 are in the same bending direction as the first layout area 31, and the third curved surface 323 is connected between the two second curved surfaces 322 and bends in a direction away from the first layout area 31. That is, both the first layout area 31 and the second layout area 32 include curved surfaces.

[0152] The grounding region 16 and the feeding region 15 are disposed on the third arc surface 323 and spaced apart along the extending direction of the third arc surface 323 . The second branch 141 extends from the second arc surface 322 to the first arc surface 321 .

[0153] Specifically, the first connecting piece 133 is disposed on the two second curved surfaces 322, the third curved surface 323 and the first curved surface 321, and a portion of the first connecting piece 133 extends from the second curved surface 322 to the first curved surface 321. The second connecting piece 143 is disposed on the two second curved surfaces 322 and the third curved surface 323.

[0154] This embodiment utilizes the curved area 33 to accommodate the connection end of the coaxial feed line 5, and at the same time allows the feeding area 15 and the grounding area 16 to surround a portion of the circumference of the outer conductor 51 and the inner conductor 52 to increase the contact area between the feeding area 15 and the grounding area 16 and the coaxial feed line 5.

[0155] Specifically, when the laying frame 22 is installed in the laying frame groove 231 , the excitation part 11 may be attached to the inner side of the laying frame groove 231 . That is, the excitation part 11 is attached to the inner wall of the laying frame groove 231 at a position corresponding to the first laying area 31 .

[0156] In this form, the excitation part 11 and the radiation pattern 12 are separated only by the side wall of the ear stem 21. Thus, the radiation performance of the radiation component 1 is greatly improved, and the assembly of the Bluetooth headset is simplified.

[0157] Optionally, the excitation portion 11 and the radiation pattern 12 in this embodiment may be disposed on the second layout area 32 and the first layout area 31 respectively by LDS (laser direct structuring) or PDS (pad printing).

[0158] Preferably, the conductive silver paste can be coated on the outer surface of the ear stem 21 to form the radiation pattern 12 on the first layout area 31 through a low-temperature conductive silver paste process, thereby reducing the cost of manufacturing the earphone antenna assembly and saving the space occupied by the radiation component 1. After the radiation pattern 12 is formed on the ear stem 21, a process such as sticker or spray painting is performed on the surface of the radiation pattern 12 and its vicinity to cover the radiation pattern 12 and protect the radiation component 1 from scratches and rust.

[0159] In some embodiments, Figure 2 , Figure 5 and Figure 6 As shown, the receiving slot 23 includes a battery slot 232 and a mounting slot 231. The battery slot 232 is connected to the mounting slot 231 and extends along the ear rod 21. The mounting slot 231 is located between the first mounting area 31 and the battery slot 232.

[0160] The layout rack groove 231 is adapted to the layout rack 22 in shape, and the side wall of the layout rack groove 231 includes two positioning surfaces 2311. The layout rack 22 has an avoidance surface 221 and two positioning edges 222, and the avoidance surface 221 is away from the second layout area 32 and is located between the two positioning edges 222. The layout rack 22 is arranged in the layout rack groove 231, the avoidance surface 221 faces the battery slot 232 to avoid the battery 61, and the two positioning edges 222 are placed on the two positioning surfaces 2311.

[0161] The avoidance surface 221 of the layout frame 22 in this embodiment is used to avoid the battery 61, so that the structure of the earphone antenna assembly is more compact. At the same time, the two positioning surfaces 2311 can be used to stably set the layout frame 22 in the layout frame groove 231 to avoid shaking. At the same time, the radiation pattern 12 can also fit with the inner wall of the layout frame groove 231 corresponding to the first layout area 31, thereby improving the coupling strength of the electromagnetic signal between the excitation part 11 and the radiation pattern 12.

[0162] Furthermore, if Figure 7As shown, the excitation part 11 and the radiation pattern 12 are both bent toward the side away from the assembly groove 241. And on the axial cross section of the ear rod 21, the projection of the excitation part 11 on the radiation pattern 12 completely overlaps with the radiation pattern 12. That is, the radiation pattern 12 is covered on the side of the excitation part 11 away from the assembly groove 241. In this way, the coupling effect between the radiation pattern 12 and the excitation part 11 can be improved, and the leakage of electromagnetic signals to the outside of the radiation component 1 can be reduced.

[0163] In an optional implementation, if Figure 1-Figure 14 As shown, the earphone antenna assembly in the above embodiment can be applied to earphones. The earphone can be a Bluetooth earphone. In this embodiment, the earphone includes a radiation component 1 and a shell 2. The shell 2 includes an ear rod 21 and a laying frame 22. The ear rod 21 has a receiving groove 23, and the outer side surface of the ear rod 21 or the inner side wall of the receiving groove 23 is provided with a first laying area 31. The laying frame 22 is provided with a second laying area 32, and the laying frame 22 is arranged in the receiving groove 23, the first laying area 31 is at least partially corresponding to the second laying area 32, and part of the second laying area 32 is recessed in a direction away from the first laying area 31 and forms an accommodating area 25 for accommodating the end of the coaxial feeder 5 between the accommodating groove 23.

[0164] The radiation component 1 includes an excitation part 11 and a radiation pattern 12. The excitation part 11 includes a feeding pattern 13 and a grounding pattern 14 and is arranged in the second arrangement area 32, and the radiation pattern 12 is arranged in the first arrangement area 31. The feeding pattern 13 includes a first branch 131. A feeding area 15 is provided at one end of the first branch 131. The grounding pattern 14 includes a second branch 141. A grounding area 16 adjacent to the feeding area 15 is provided at one end of the second branch 141, and the second branch 141 extends parallel to the first branch 131 and forms a first coupling gap 41 on the opposite side, and the feeding area 15 and the grounding area 16 are located in the accommodation area 25. The coaxial feed line 5 includes an outer conductor 51 and an inner conductor 52 located inside the outer conductor 51, one end of the coaxial feed line 5 extends to the accommodation area 25 and the outer conductor 51 is electrically connected to the grounding area 16, and the inner conductor 52 is electrically connected to the feeding area 15. The radiation pattern 12 is coupled to the excitation portion 11 , and radiates the electromagnetic signal of the excitation portion 11 toward the outside of the shell portion 2 .

[0165] In summary, in the earphone of this embodiment, the radiation pattern 12 is arranged on the ear rod 21, and the excitation part 11 is arranged on the deployment frame 22. At the same time, when the deployment frame 22 is arranged in the receiving groove 23, the excitation part 11 can correspond to the radiation pattern 12 and couple with each other. Therefore, on the one hand, the electromagnetic signal is generated by the excitation part 11, and the radiation pattern 12 is used to send it. Thereby, the radiation efficiency and sensitivity of the radiation component 1 to the electromagnetic signal are improved. The obstruction of the electromagnetic signal caused by the shell 2 is reduced or even avoided. On the other hand, the excitation part 11 can be processed together with the ear rod 21, and the radiation pattern 12 can be processed together with the deployment frame 22, thereby simplifying the processing difficulty of the earphone antenna assembly and reducing the manufacturing cost. At the same time, when the form of the excitation part 11 or the radiation pattern 12 changes, only the form of the excitation part 11 or the radiation pattern 12 can be changed in a targeted manner, thereby improving the flexibility of the product. On the other hand, by utilizing the accommodation area 25 formed between the second layout area 32 and the accommodation groove 23 , it is possible to facilitate the electrical connection between the excitation part 11 and the coaxial feed line 5 , and make the structure of the earphone antenna assembly more compact.

[0166] In some embodiments, Figure 1-Figure 7 As shown, the first layout area 31 in this embodiment is located on the outer wall of the ear rod 21, and the first layout area 31 extends from one end of the ear rod 21 to the other end and bends toward the side of the ear rod 21. The second layout area 32 extends along the length direction of the ear rod 21, and has a first curved surface 321 and a curved surface area 33 in the extending direction, and the curved surface area 33 includes two second curved surfaces 322 and a third curved surface 323, and the first curved surface 321 and the two second curved surfaces 322 are consistent with the bending direction of the first layout area 31, and the third curved surface 323 is connected between the two second curved surfaces 322 and bends toward the direction away from the first layout area 31.

[0167] The grounding region 16 and the feeding region 15 are located on the third arc surface 323 and are spaced apart along the extending direction of the third arc surface 323 . The second branch 141 extends from the second arc surface 322 to the first arc surface 321 .

[0168] The receiving groove 23 includes a mounting frame groove 231, and the mounting frame groove 231 corresponds to the first mounting area 31. The mounting frame 22 is disposed in the mounting frame groove 231, and a receiving area 25 is formed between the third arc surface 323 and the side wall of the mounting frame groove 231. One end of the coaxial feed line 5 extends to the receiving area 25 and is electrically connected to the excitation part 11.

[0169] The curved area 33 in this embodiment is used to avoid the connection end of the coaxial feeder 5, making the structure of the Bluetooth headset more compact. At the same time, it can also ensure that the excitation part 11 can fit the side wall of the layout frame groove 231.

[0170] Furthermore, if Figure 2As shown, the Bluetooth headset also includes a battery 61, a control circuit 62 and a sound unit 63. The ear rod 21 has an open end 211, and the earphone antenna assembly also includes a blocking piece 212. The mounting frame slot 231 and the battery slot 232 extend in parallel, and one end is connected to the assembly slot 241, and the other end extends to the open end 211. The battery 61 in this embodiment is a cylindrical battery 61. The avoidance surface 221 of the mounting frame 22 is adapted to the side wall of the cylindrical battery 61 so that the cylindrical battery 61 can fit with the avoidance surface 221, thereby ensuring that the excitation part 11 is attached to the side wall of the mounting frame slot 231.

[0171] During the assembly process of the Bluetooth headset, one connection end of the coaxial feeder 5 can be connected to the excitation part 11 on the mounting frame 22. Then, the mounting frame 22 and the battery are inserted into the mounting frame slot 231 and the battery slot 232 from the opening end 211, respectively. Then, the other connection end of the coaxial feeder 5 is pulled to the position of the connector 24 to connect the coaxial feeder 5 to the control circuit 62 through the assembly slot 241. Finally, after the control circuit 62 is electrically connected to the sound unit 63, the control circuit 62 is set in the connector 24, and the sound unit 63 is set in the assembly slot 241, thereby simplifying the installation method of the Bluetooth headset.

[0172] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A Bluetooth antenna assembly, characterized in that: The Bluetooth antenna assembly comprises: The shell (2) comprises an ear rod (21) and a connector (24), wherein the connector (24) has a mounting groove (241) for accommodating a sound unit (63), and the connector (24) is arranged at one end of the ear rod (21), and the mounting groove (241) faces the side of the ear rod (21); and A radiation component (1) comprises a radiation pattern (12), wherein the radiation pattern (12) is arranged on the outer surface of the ear rod (21) and the direction of the radiation pattern (12) is opposite to the direction of the assembly groove (241).

2. The Bluetooth antenna assembly according to claim 1, characterized in that: The Bluetooth antenna assembly also includes: A shield covers the radiation pattern (12).

3. The Bluetooth antenna assembly according to claim 1, characterized in that: The radiation pattern (12) is a conductive silver paste coated on the outer surface of the ear stem (21).

4. The Bluetooth antenna assembly according to claim 1, characterized in that: The shell (2) further comprises a laying frame (22), the laying frame (22) having a second laying area (32), and the ear rod (21) having a laying frame slot (231); The radiation component (1) further comprises an excitation portion (11), wherein the excitation portion (11) is arranged in the second layout area (32); The layout frame (22) is arranged in the layout frame slot (231), and part of the excitation part (11) is attached to the inner wall of the layout frame slot (231) and coupled with the radiation pattern (12).

5. The Bluetooth antenna assembly according to claim 4, characterized in that: The ear rod (21) has a receiving groove (23), the receiving groove (23) comprises a battery groove (232) and the mounting groove (231), the battery groove (232) is connected to the mounting groove (231), the battery groove (232) and the mounting groove (231) extend along the ear rod (21), the mounting groove (231) is located between the radiation pattern (12) and the battery groove (232), and the side wall of the mounting groove (231) comprises two positioning surfaces (2311); The laying frame (22) has an avoidance surface (221) and two positioning edges (222), wherein the avoidance surface (221) is away from the second laying area (32) and is located between the two positioning edges (222); The layout frame (22) is arranged in the layout frame groove (231), the avoidance surface (221) is recessed toward the radiation pattern (12) to avoid the battery (61), and the two positioning edges (222) are mounted on the two positioning surfaces (2311).

6. The Bluetooth antenna assembly according to claim 4, characterized in that: A portion of the second layout area (32) close to the assembly groove (241) is recessed in a direction away from the radiation pattern (12) and forms an accommodation area (25) for accommodating the end of the coaxial feeder line (5) with the side wall of the layout frame groove (231).

7. A headset, characterized in that: The earphone comprises: Sound generating unit (63); The shell (2) comprises an ear rod (21) and a connector (24), wherein the connector (24) has an assembly groove (241), the connector (24) is arranged at one end of the ear rod (21), the assembly groove (241) faces the side of the ear rod (21), and the sound generating unit (63) is arranged in the assembly groove (241); and A radiation component (1) comprises a radiation pattern (12), wherein the radiation pattern (12) is arranged on the outer surface of the ear rod (21) and the direction of the radiation pattern (12) is opposite to the direction of the assembly groove (241).

8. The earphone according to claim 7, characterized in that: The shell (2) further comprises a laying frame (22), the laying frame (22) having a second laying area (32), and the ear rod (21) having a laying frame slot (231); The radiation component (1) further comprises an excitation portion (11), wherein the excitation portion (11) is arranged in the second layout area (32); The layout frame (22) is arranged in the layout frame slot (231), and part of the excitation part (11) is attached to the inner wall of the layout frame slot (231) and coupled with the radiation pattern (12).

9. The earphone according to claim 8, characterized in that A portion of the second layout area (32) close to the assembly groove (241) is recessed in a direction away from the radiation pattern (12) and forms a receiving area (25) with a side wall of the layout frame groove (231); The headset also includes: A control circuit (62) is disposed in the assembly slot (241); and A coaxial feed line (5) has one end extending into the assembly slot (241) and electrically connected to the control circuit (62), and the other end extending from the assembly slot (241) into the accommodating area (25) and electrically connected to the excitation portion (11).

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