Wireless listening device
By employing a separate design for the main and auxiliary antennas in the wireless listening device, the problem of insufficient antenna clearance area is solved, signal reception capability and device compactness are improved, and multi-functional integration is achieved.
Patent Information
- Application Number
- CN202422173960.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-09-04
AI Technical Summary
Insufficient clearance area for antennas in wireless listening devices limits wireless signal reception capabilities, and existing antenna designs cannot balance the integration of electronic components and signal strength.
The design employs a separate main antenna and auxiliary antenna. The main antenna is spaced apart from the first circuit board, while the auxiliary antenna is positioned on the outer edge of the circuit board. By combining a flexible circuit board and a magnet structure, the internal space of the housing is fully utilized to improve the effective area and radiation performance of the antenna.
While ensuring that electronic components do not affect the antenna clearance area, the wireless signal reception capability is improved, and the device achieves a compact structure and multi-functional integration.
Smart Images
Figure CN223503001U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic technology, specifically to a wireless listening device. Background Technology
[0002] With the development of technology, changes in people's usage habits of digital products, and the improvement of entertainment and cultural consumption levels, people are becoming increasingly reliant on in-ear wireless listening devices. To meet the diverse functional requirements of these devices, a large number of electronic components are integrated. In current wireless listening devices, most of these electronic components are concentrated in a small space located on the outside of the user's ear canal.
[0003] However, the antenna in wireless listening devices needs to avoid other electronic components to obtain sufficient clearance. In current wireless listening device solutions, only small antennas can be used to meet the clearance requirements, which limits the wireless signal reception capability of the wireless listening device. Utility Model Content
[0004] The purpose of this invention is to provide a wireless listening device that is compact in structure and small in size, and in particular, has enhanced wireless signal reception capabilities.
[0005] To achieve the above objectives, this utility model provides a wireless listening device. The wireless listening device includes: a housing, a first circuit board, and an antenna device. The housing forms a receiving cavity, and the first circuit board and antenna device are arranged within the receiving cavity. The first circuit board is a main circuit board. The antenna device includes a main antenna and an auxiliary antenna. The main antenna is spaced apart from the first circuit board and electrically connected to it via a conductive structure. One end of the auxiliary antenna is connected to the first circuit board, and the auxiliary antenna is arranged at the outer peripheral edge of the first circuit board.
[0006] According to some embodiments, the housing includes a shell and a top cover, wherein the shell is at least partially positioned within the wearer's concha and at least partially forms a receiving cavity, and the top cover at least partially closes the receiving cavity at an end of the wireless listening device, wherein the main antenna is closer to the top cover than the auxiliary antenna.
[0007] According to some embodiments, the auxiliary antenna is constructed as a flexible antenna and is strip-shaped, with the auxiliary antenna having surfaces formed in the length and width directions that are tightly attached to the outer peripheral surface of the first circuit board.
[0008] According to some embodiments, the wireless listening device further includes a second circuit board spaced apart from the first circuit board, the main antenna being arc-shaped and disposed within the edge of the second circuit board along its edge.
[0009] According to some embodiments, the wireless listening device also includes a touchpad, which is disposed on a second circuit board and is positioned inside the main antenna at a distance relative to the main antenna.
[0010] According to some embodiments, the wireless listening device also includes a charging post disposed on a second circuit board and extending toward a top cover, wherein the charging post is disposed in a cutout within the touch panel in the plane of the second circuit board.
[0011] According to some embodiments, the wireless listening device also includes a flexible circuit board, and the charging post is electrically connected to the first circuit board via the flexible circuit board, wherein the flexible circuit board is connected to the edge of the second circuit board where the main antenna is not located.
[0012] According to some embodiments, the wireless listening device also includes a magnet disposed between a first circuit board and a second circuit board, in the plane of the second circuit board, with the orthographic projection of the magnet located within the orthographic projection of the main antenna.
[0013] According to some embodiments, the first circuit board is generally trapezoidal, and the orthographic projection of the second circuit board is located within the outer contour of the first circuit board in the plane of the first circuit board. The wireless listening device also includes a first pickup device and a second pickup device, which are arranged at the two ends of the base of the trapezoid.
[0014] According to some embodiments, the wireless listening device further includes a battery, a speaker, a sensor, and a third pickup device, wherein the battery, speaker, sensor, and third pickup device are arranged on the side of the first circuit board away from the second circuit board.
[0015] This invention, by setting up a separate main antenna and auxiliary antenna in a wireless listening device, can improve the effective area and radiation performance of the antenna while ensuring that a large number of electronic components do not affect the antenna's clearance area, thereby enhancing the wireless signal reception capability of the wireless listening device. The wireless listening device of the embodiment provided herein particularly makes full use of the space inside its housing, where a large number of compactly arranged electronic components can achieve multiple functions. Attached Figure Description
[0016] Figure 1 This is an exploded view of a wireless listening device according to an embodiment of the present invention.
[0017] Figure 2 It is based on Figure 1 A top view of the second circuit board in the embodiment of the present invention in an incomplete installation state.
[0018] Figure 3 It is based on Figure 1 A radial cross-sectional view of the interior of the second circuit board in the embodiment.
[0019] Figure 4 Yes, according to Figure 1 A perspective view of the top cover of the wireless listening device in the embodiment of the Chinese version.
[0020] Figure 5 It is based on Figure 1 A perspective view of the functional components of the wireless listening device in the embodiment of the Chinese version. Detailed Implementation
[0021] The features, advantages and technical effects of exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.
[0022] Figure 1 This is an exploded view of a wireless listening device according to an embodiment of the present invention. In some embodiments, the wireless listening device is configured as a wireless headset or a hearing aid. In some embodiments, the wireless listening device is configured as a TWS (True Wireless Stereo) headset. Figure 1 The accompanying drawings only schematically illustrate a single unit in a wireless listening device for wearing on one ear of a user. However, those skilled in the art will understand that the wireless listening device of this embodiment can include two units worn in pairs on the left and right ears of the user, respectively. These two units are structurally symmetrically arranged and are not connected to each other by conventional physical wires. Here, for the sake of simplicity, only one unit of the wireless listening device will be described in conjunction with the accompanying drawings.
[0023] The outer casing has a receiving cavity in which the functional components of the wireless listening device are arranged.
[0024] like Figure 1As shown, in this embodiment, the outer shell includes a housing 240 and a top cover 110. The housing 240 and the top cover 110 are made of non-metallic materials. In some embodiments, the housing 240 may include at least one of ABS, PC, PET, and ceramic materials. The housing 240 may also be formed using polymer resin via 3D printing. The housing 240 may also be made of other materials; this invention does not impose specific limitations. The top cover 110 includes at least one of ABS, PC, PET, and ceramic materials, and may also be made of other materials; this invention does not impose specific limitations. The top cover 110 and the housing 240 are connected to each other by a snap-fit or other form-fitting method and / or by means of an adhesive and / or by means of separate connecting members. In some embodiments, the outer contour of the housing 240 at least partially matches the shape of the wearer's concha or the shape of the concha and external auditory canal. For this purpose, the housing 240 may optionally be constructed with a vent 242 isolated from the receiving cavity 241, and a ventilation adjustment device 260 is provided at the port of the vent 242 near the top cover 110. When a user wears the wireless listening device, it can be placed at least partially within the wearer's concha, with the top cover 110 located at the end of the wireless listening device furthest from the wearer's concha. The housing 240 forms a cavity 241. Figure 1 and Figure 4 As can be seen, in this embodiment, the top cover 110 has a protrusion 111 and a connecting portion 112 for connecting the protrusion 111 and the housing 240, wherein the protrusion 111 forms a cavity inside the wireless listening device. The top cover 110 at least partially closes the cavity 241 formed by the housing 240 at the end of the wireless listening device. Thus, in this embodiment, the cavity 241 formed by the housing 240 and the cavity formed by the protrusion 111 of the top cover 110 together form the receiving cavity of the outer shell. In another embodiment, the top cover can also be substantially flat, whereby the receiving cavity of the outer shell is substantially composed only of the cavity 241 of the housing 240.
[0025] The functional components of the wireless listening device include a first circuit board 180 and a second circuit board 140.
[0026] The first circuit board 180 is the main circuit board. The first circuit board 180 includes a body made of insulating material, in which conductive structures are integrated to form a circuit board. The conductive structures include, for example, printed circuit lines, leads, flying wires, ball pins, etc. Components of the wireless listening device, including but not limited to control devices, charging devices, batteries, antennas, pickup devices, and speakers, can be electrically connected to the first circuit board 180. Furthermore, in this embodiment, the first circuit board 180 is constructed as a rigid circuit board and supports one or more of the aforementioned components. In this embodiment, see particularly... Figure 1 The first circuit board 180 is roughly trapezoidal, preferably isosceles trapezoidal.
[0027] Figure 2 It is based on Figure 1 A top view of the second circuit board in the embodiment of the present invention in an incomplete installation state, and Figure 3 It is based on Figure 1 A radial cross-sectional view of the interior of the second circuit board in the embodiment. Figures 1 to 3 As shown, the second circuit board 140 includes a body 141 made of insulating material, in which conductive structures are integrated to form a circuit board. In this embodiment, the body 141 of the second circuit board 140 also supports some components of the functional components of the wireless listening device. The body 141 of the second circuit board 140 has a generally circular basic structure.
[0028] In this embodiment, the first circuit board 180 and the second circuit board 140 are arranged spaced apart from each other. Preferably, the first circuit board 180 and the second circuit board 140 are arranged parallel to each other. The second circuit board 140 is closer to the top cover 110 relative to the first circuit board 180. The dimensions and relative positions of the first circuit board 180 and the second circuit board 140 are designed such that, in the plane of the first circuit board 180, the orthographic projection of the second circuit board 140 lies within the outer contour of the first circuit board 180.
[0029] Figure 4 Yes, according to Figure 1 A perspective view of the top cover 110 of the wireless listening device in the embodiment. Figure 4 As shown, a first positioning plate 113 and a second positioning plate 114 are constructed inside the protrusion 111 of the top cover 110. See also Figure 2 and Figure 3 The second circuit board 140 is configured with a first positioning hole 144 and a second positioning hole 145. A first positioning plate 113 can extend into the first positioning hole 144, and a second positioning plate 114 can extend into the second positioning hole 145, thereby positioning the second circuit board 140. See also... Figure 1 The second circuit board 140 may be provided with an adhesive 130 for fixing the second circuit board 140 to the top cover 110.
[0030] In this embodiment, the functional components of the wireless listening device include an antenna device. The antenna device includes a main antenna 161 and an auxiliary antenna 162. This increases the overall radiation area of the antenna device and enhances its overall radiation performance. Here, the main antenna 161 is closer to the top cover 110 than the auxiliary antenna 162, thus placing the main antenna 161 closer to the outside and facilitating improved signal strength.
[0031] like Figure 2 and Figure 3As shown, the main antenna 161 is generally arc-shaped. The main antenna 161 is positioned within the edge of the body 141 of the second circuit board 140. In this configuration, the main antenna 161 achieves a larger radiation area, which helps improve signal strength, and also provides sufficient space for other components on the same circuit board. Here, the main antenna 161 is located on the insulating material of the body 141 of the second circuit board 140. At one end of its arc-shaped structure, the main antenna 161 has a connection terminal 1611 for electrical connection with the first circuit board 180. For this purpose, the insulating material forming the body 141 of the second circuit board 140 also has a lug-shaped spring tab 142. A metal conductor 147 is provided at the spring tab 142, and the connection terminal 1611 is located at the spring tab 142 and connected to the metal conductor 147. That is, the main antenna 161 is connected to the first circuit board 180 via its connection terminal 1611, the spring tab 142, and the metal conductor 147 at the spring tab 142.
[0032] Figure 5 It is based on Figure 1 A perspective view of the functional components of the wireless listening device in the embodiment. See also... Figure 1 and Figure 5 The auxiliary antenna 162 is constructed as a flexible, strip-shaped antenna. One end of the auxiliary antenna 162 is connected to the first circuit board 180, and the auxiliary antenna 162 is disposed at the outer peripheral edge of the first circuit board 180. In this embodiment, one end of the auxiliary antenna 162 is connected to the bottom edge of the trapezoidal structure of the first circuit board 180. The auxiliary antenna 162 is in close contact with the outer peripheral surface of the first circuit board 180 (not shown in the figures) formed in both the length and width directions, thereby making full use of the space within the housing. The auxiliary antenna is not affected by interference from other components of the functional components, and the overall structure of the functional components is more compact.
[0033] The functional components of wireless audio devices also include touch controls and charging devices.
[0034] like Figures 1 to 2As shown, the touch device includes a touchpad 191 and a probe 192. The touchpad 191 is disposed on a second circuit board 140, and is positioned at a distance from the main antenna 161, inside the main antenna 161. The probe 192 is disposed on a first circuit board 180, and extends through a hole 148 in the second circuit board 140 and connects to the touchpad 191. Here, the probe 192 is disposed on the edge of the body 141 of the second circuit board 140 where the main antenna 161 is not located, thereby maintaining a distance from the main antenna 161. This design, which arranges the touchpad 191 and the main antenna 161 on the same circuit board and spaced apart from each other, makes full use of space, and the main antenna is not interfered with by the touch device; at the same time, the second circuit board holds both the touchpad and the main antenna, thus saving materials. The second circuit board and the components it holds can serve as pre-assembled components, which facilitates improved assembly efficiency during the assembly of wireless audio devices.
[0035] The charging device includes charging posts 121 and 122, which are arranged at the second circuit board 140 and extend toward the top cover 110. Specifically, in this embodiment, see particularly... Figure 2 The charging device includes three charging posts 121 with the same polarity, each post 121 being a column with a non-circular cross-section. The charging device also includes a charging post 122 with the opposite polarity to the charging posts 121, which may be a column with a circular cross-section. Here, the charging post 122 is positioned at the center of the circle formed by the three charging posts 121. In some embodiments, the charging posts 121 and 122 can be rigidly supported, for example, fixedly mounted to a second circuit board 140. In some embodiments, the charging posts 121 and 122 can be elastically supported, for example, mounted to the second circuit board 140 as spring pins (i.e., so-called POGO PINs). The charging posts 121 and 122 are in electrical contact with metal conductors 146 of different polarities inside the second circuit board 140. See in particular... Figure 3 The metal conductor 146 extends from the center of the circular body 140 of the second circuit board 140 to the lug connected to the body 140. Here, the lug and the metal conductor 146 therein form a flexible circuit board 143, through which the charging posts 121 and 122 can be electrically connected to the first circuit board 180. In particular, as shown... Figure 2 and Figure 3As shown, the flexible circuit board 143 is connected to the edge of the second circuit board 140 where the main antenna 161 is not located. Here, the protrusion 111 of the top cover 110 has a through hole, the touch panel 191 has an internal cutout, and the charging posts 121 and 122 start from the part that contacts the metal conductor 146 and extend sequentially through the cutout of the touch panel 191 and the through hole of the protrusion 111 of the top cover 110, thereby enabling the wireless listening device to be charged by means of the ends of the charging posts 121 and 122 exposed in the protrusion 111.
[0036] The functional components of the wireless listening device also include a magnet 150 to ensure stable contact between the wireless listening device and the charging dock during charging. The magnet 150 is disposed between the first circuit board 180 and the second circuit board 140. Here, the size of the magnet 150 and its position relative to the second circuit board 140 are determined such that, within the plane of the second circuit board 140, the orthographic projection of the magnet 150 lies within the orthographic projection of the main antenna 161.
[0037] The functional components of the wireless listening device also include a first pickup device 171 and a second pickup device 172. As mentioned above, the first circuit board 180 is generally trapezoidal, preferably isosceles trapezoidal, and the first pickup device 171 and the second pickup device 172 are arranged at the two ends of the base of the trapezoid.
[0038] The functional components of the wireless listening device also include a battery 200, a speaker 220, a sensor 230, and a third pickup device 173, wherein the battery 200, speaker 220, sensor 230, and third pickup device 173 are arranged on the side of the first circuit board 180 away from the second circuit board 140. Here, the sensor 230 can be a light sensor to monitor the wearing status of the wireless listening device or for health detection. The speaker 220 is, for example, a balanced armature speaker or a dynamic driver; this invention does not further limit the speaker type.
[0039] In some embodiments, the first pickup device 171 can be used as a call microphone for picking up voice signals in call noise reduction technology, such as ENC (Environmental Noise Cancellation) technology; the second pickup device 172 can be used as a feedforward microphone in ANC (Active Noise Cancellation) technology; and the third pickup device 173 can be used as a feedback microphone in ANC technology, for example. Thus, the wireless listening device can use three microphones to implement ENC noise reduction technology and ANC noise reduction technology, thereby improving the overall noise reduction capability of the wireless listening device.
[0040] By utilizing the aforementioned antenna device, namely the separate main antenna 161 and auxiliary antenna 162, and their relative positions to the three pickup devices 171, 172, and 173, as well as the touch control device, charging device, and other electronic components, the wireless listening device achieves a compact and small structure at its end furthest from the user's ear canal. Furthermore, it increases the effective area and radiation performance of the antenna while ensuring that the aforementioned electronic components do not affect the antenna's clearance area, thus enhancing the wireless signal reception capability of the wireless listening device. The wireless listening device of the embodiment provided here particularly makes full use of the space inside its housing, where a large number of compactly arranged electronic components can achieve multiple functions, improving the user experience.
[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0042] List of reference numerals
[0043] 110 Top Cover
[0044] 111 Protrusion
[0045] 112 Connecting part
[0046] 113 First Positioning Plate
[0047] 114 Second Positioning Plate
[0048] 121 First charging column
[0049] 122 Second charging column
[0050] 130 Adhesive
[0051] 140 Second Circuit Board
[0052] 141 Main body of the second circuit board
[0053] 142 shrapnel
[0054] 143 Flexible Circuits
[0055] 144 First positioning hole
[0056] 145 Second positioning hole
[0057] 146 Metallic conductors
[0058] 147 Metallic conductors
[0059] 148 holes
[0060] 150 magnets
[0061] 161 Main Antenna
[0062] 1611 Connector
[0063] 162 Auxiliary Antenna
[0064] 171 First pickup device
[0065] 172 Second pickup device
[0066] 173 Third pickup device
[0067] 180 First Circuit Board
[0068] 191 Touchpad
[0069] 192 probes
[0070] 200 batteries
[0071] 211 First Conductor Section
[0072] 212 Second Conductor Section
[0073] 220 speakers
[0074] 230 optical sensor
[0075] 240 housing
[0076] 241 Receiving cavity
[0077] 242 Vent
[0078] 260 Ventilation volume regulator
Claims
1. A wireless listening device, comprising: The housing, the first circuit board (180), and the antenna assembly. The outer casing has a receiving cavity, in which the first circuit board (180) and the antenna device are arranged. The antenna device includes a main antenna (161) and an auxiliary antenna (162). The main antenna (161) is spaced apart from the first circuit board (180) and electrically connected to each other through a conductive structure. One end of the auxiliary antenna (162) is connected to the first circuit board (180), and the auxiliary antenna (162) is arranged at the outer peripheral edge of the first circuit board (180).
2. The wireless listening device according to claim 1, wherein, The housing includes a housing (240) and a top cover (110), wherein the housing (240) is at least partially positioned in the concha of the wearer and at least partially forms the receiving cavity, and the top cover (110) at least partially closes the receiving cavity at the end of the wireless listening device, wherein the main antenna (161) is closer to the top cover (110) than the auxiliary antenna (162).
3. The wireless listening device according to claim 1, wherein, The auxiliary antenna (162) is constructed as a flexible antenna and is strip-shaped. The auxiliary antenna (162) is in close contact with the outer peripheral surface of the first circuit board (180) with the surfaces formed in the length and width directions.
4. The wireless listening device according to claim 2, wherein, The wireless listening device also includes a second circuit board (140) spaced apart from the first circuit board (180), the main antenna (161) is arc-shaped, and the main antenna (161) is disposed within the edge of the second circuit board (140) along the edge of the second circuit board (140).
5. The wireless listening device according to claim 4, wherein, The wireless listening device also includes a touch panel (191) arranged on the second circuit board (140), and the touch panel (191) is disposed at a distance from the main antenna (161) on the inner side of the main antenna (161).
6. The wireless listening device according to claim 5, wherein, The wireless listening device also includes charging posts (121, 122), which are arranged at the second circuit board (140) and extend toward the top cover (110). In the plane of the second circuit board (140), the charging posts (121, 122) are arranged in the hollow portion inside the touch panel (191).
7. The wireless listening device according to claim 6, wherein, The wireless listening device also includes a flexible circuit board (143), and the charging posts (121, 122) are electrically connected to the first circuit board (180) through the flexible circuit board (143). The flexible circuit board (143) is connected to the edge of the second circuit board (140) where the main antenna (161) is not located.
8. The wireless listening device according to claim 4, wherein, The wireless listening device also includes a magnet (150) arranged between the first circuit board (180) and the second circuit board (140). In the plane where the second circuit board (140) is located, the orthographic projection of the magnet (150) is located within the orthographic projection of the main antenna (161).
9. The wireless listening device according to claim 4, wherein, The first circuit board (180) is generally trapezoidal. In the plane containing the first circuit board (180), the orthographic projection of the second circuit board (140) lies within the outer contour of the first circuit board (180). The wireless listening device further includes a first pickup device (171) and a second pickup device (172), which are arranged at the two ends of the bottom edge of the trapezoid.
10. The wireless listening device according to claim 4, wherein, The wireless listening device also includes a battery (200), a speaker (220), a sensor (230), and a third pickup device (173), wherein the battery (200), the speaker (220), the sensor (230), and the third pickup device (173) are arranged on the side of the first circuit board (180) away from the second circuit board (140).