TWM640881U - Wireless headset and binaural true wireless headset - Google Patents

Abstract

A wireless earphone, comprising: a shell, a main board, an antenna, a reflector and a broadcasting unit; the shell includes an ear handle shell, a corner shell connected to the top of the ear handle shell, and an in-ear shell cooperating and fixed with the corner shell; the main board is set In the cavity in the ear handle shell; the antenna is set on the clear area of the main board; the reflection plate is set in the cavity in the ear handle shell, and is located on the side of the ear handle shell facing the ear shell, reflecting the radiation emitted by the antenna Radio frequency signal; the broadcasting unit is arranged in the corner housing and connected to the antenna arranged on the main board, and plays the audio signal received by the antenna. Therefore, realizing the directional performance of broadband and high gain can provide stable radio frequency signal output, prevent signal interference and interruption, and reduce the influence of electromagnetic radiation on the user's head when the user wears the wireless earphone.

Description

Wireless earphones and binaural true wireless earphones

The present application relates to the technical field of electronic equipment, in particular to a wireless earphone and a binaural true wireless earphone.

With the rapid development of wireless bluetooth technology, it is more convenient for people's life. Among them, TWS+ (True Wireless Stereo plus) is the latest wireless Bluetooth technology, and it is an upgraded version of True Wireless Stereo (TWS) technology.

TWS+ technology uses Bluetooth devices to synchronously send audio signals directly to the left earphone and right earphone for playback, without the need for pairing and connection between the left earphone and the right earphone. Therefore, it has the advantages of low delay and low power consumption. Since the TWS+ technology uses both ears for simultaneous transmission, there is no need to pair and connect the left earphone and the right earphone. When the left earphone and the right earphone are switched, the wireless earphones using TWS+ technology will not have the problem of signal disconnection.

However, the antennas installed in the existing wireless earphones radiate radio frequency signals in the form of electromagnetic waves. There is usually no special design for the radiation pattern of the antennas, and there is a problem of electromagnetic radiation affecting the user's head.

Therefore, how to provide a wireless earphone and a binaural true wireless earphone to solve the above problems is an urgent problem for those skilled in the art.

The embodiment of the present application provides a wireless earphone and a binaural true wireless earphone, which can effectively solve the problem of electromagnetic radiation affecting the user's head due to the lack of a special radiation field design of the antenna installed in the existing wireless earphone.

In order to solve the above-mentioned technical problems, the application is implemented as follows:

The application provides a wireless earphone, which includes: a housing, a main board, an antenna, a reflector, and a broadcasting unit; the housing includes an ear handle housing, a corner housing connected to the top of the ear handle housing, and an in-ear ear that is matched and fixed with the corner housing Housing; the main board is set in the cavity in the ear handle shell; the antenna is set on the clearance area of the main board; the reflector is set in the cavity in the ear handle shell, and is located on the side of the ear handle shell facing the ear shell , reflecting the radio frequency signal emitted by the antenna; the broadcasting unit is arranged in the corner housing and connected to the antenna arranged on the main board, and plays the audio signal received by the antenna.

The present application also provides a binaural true wireless earphone, which includes: two wireless earphones of the present application, the two wireless earphones are the left earphone and the right earphone respectively, wherein the left earphone and the right earphone respectively receive data from the electronic device audio signal.

In the embodiment of the present application, through the setting of the reflection plate in the ear handle housing (that is, the reflection plate is located on the side of the ear handle housing facing the in-ear housing), high-gain directional performance can be achieved, and stable radio frequency signal output can be provided. Prevent signal interference and interruption, and at the same time, after the user wears the wireless earphone, the electromagnetic radiation will be isolated from the user's head, reducing the impact of electromagnetic radiation on the user's head.

Embodiments of the present invention will be described below in conjunction with related drawings. In these drawings, the same reference numerals indicate the same or similar elements or method flows.

It must be understood that words such as "comprising" and "including" used in this specification are used to indicate the existence of specific technical features, values, method steps, operation processes and/or components, but do not exclude the possibility of adding More technical features, values, method steps, job processing, components, or any combination of the above.

It should be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, intervening elements may be present. In contrast, when an element is described as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.

Please refer to FIG. 1 to FIG. 5 , FIG. 1 is a perspective view of a first embodiment of a wireless earphone according to the present application, FIG. 2 is an exploded view of an embodiment of the wireless earphone in FIG. 1 , and FIG. 3 is a perspective view of the wireless earphone in FIG. 1 Schematic diagrams, FIG. 4 is a combined schematic view of the wireless earphone in FIG. 2 without a housing, and FIG. 5 is a combined schematic diagram of a second viewing angle of the wireless earphone in FIG. 2 without a housing. As shown in Figures 1 to 5, in this embodiment, the wireless earphone 1 includes: a housing 11, a main board 12, an antenna 13, a reflector 14 and a broadcast unit 17; the housing 11 includes an ear handle housing 111, connected to the ear handle The corner housing 112 at the top of the housing 111 and the in-ear housing 113 fixed with the corner housing 112; the main board 12 is set in the cavity 1111 in the ear handle housing 111; the antenna 13 is set on the headroom 121 of the main board 12 The reflection plate 14 is arranged in the cavity 1111 in the ear handle housing 111, and is located on the side of the ear handle housing 111 facing the ear housing 113, reflecting the radio frequency signal emitted by the antenna 13; the broadcast unit 17 is arranged in the corner housing 112 and is connected to the antenna 13 arranged on the main board 12 to play the audio signal received by the antenna 13 . Among them, the antenna 13 radiates radio frequency signals in the form of electromagnetic waves; the material of the housing 11 can be but not limited to plastic; the main board 12 can be but not limited to a printed circuit board (Printed Circuit Board, PCB); the antenna 13 can be but not limited to ceramics Antenna; the material of the reflector 14 may be but not limited to conductive metal material, or the reflector 14 may be a Laser-Direct-structuring (LDS) antenna or a Flexible Printed Circuit (FPC) antenna (ie The reflector 14 reflects the electromagnetic wave radiated by the antenna 13 toward the ear shell 113 through the metal radiator on the LDS antenna or the FPC antenna); the broadcast unit 17 may include but not limited to a speaker.

Through the setting of the reflector 14 in the ear handle housing 111, even if the antenna 13 has no special radiation field design, the reflector 14 can reflect the electromagnetic waves radiated by the antenna 13 towards the ear housing 113, so that when the user wears the wireless earphone After 1, the reflector 14 isolates the electromagnetic radiation from the user's head, reducing the impact of electromagnetic radiation on the user's head. In addition, the reflector 14 can reflect the electromagnetic waves radiated by the antenna 13 away from the ear housing 113 to achieve high-gain directional performance, provide stable radio frequency signal output, and prevent signal interference and interruption.

In one embodiment, the length L2 of the reflection plate 14 parallel to the extension direction D2 of the ear handle housing 111 is greater than the length L3 of the headroom 121 parallel to the extension direction D2 of the ear handle housing 111, and the arrangement of the reflection plate 14 and the antenna 13 corresponding to the position. In one example, the length L2 of the reflector 14 is greater than the length L1 of the main board 12 parallel to the extension direction D2 of the ear handle housing 111, so that after the user wears the wireless earphone 1, the electromagnetic radiation is effectively separated from the user's head. Isolated to reduce the impact of electromagnetic radiation on the user's head (as shown in Figure 6, Figure 6 is a combined schematic diagram of an embodiment of the wireless earphone in Figure 2 that does not include a corner housing and an in-ear housing). In another example, the length L2 of the reflector 14 is greater than the length L3 of the headroom 121, so that after the user wears the wireless earphone 1, most of the electromagnetic radiation is isolated from the user's head, reducing the electromagnetic radiation. The impact on the user's head (as shown in Figure 7 and Figure 8, Figure 7 is a combined schematic diagram of an embodiment of a wireless earphone according to the present application that does not include a corner housing and an ear housing; Combination schematic diagram of another embodiment of the wireless earphone that does not include the corner housing and the in-ear housing).

In one embodiment, the reflector 14 can be a U-shaped reflector, and the concave surface 141 of the U-shaped reflector faces the main board 12 (as shown in FIG. 4 and FIG. 5 ), so as to direct the electromagnetic wave radiated by the antenna 13 away from the ear. The direction of the housing 113 is reflective, enabling high gain directional performance. Wherein, the concave surface 141 of the U-shaped reflector has a radius of curvature, and different sizes of the radius of curvature correspond to different radiation field types of the wireless earphone 1; Adjust the radiation field type of the wireless earphone 1 (that is, control the reflection direction of electromagnetic waves through different curvature radii).

In one embodiment, referring to FIG. 3 , the profile of the reflection plate 14 can match the internal profile of the ear handle housing 111 (that is, the ear handle housing 111 is a circular rod-shaped hollow shell, and the reflection plate 14 The radius of curvature of the concave surface 141 is the same as the radius of the ear handle housing 111 ), so as to facilitate the assembly of the wireless earphone 1 .

In one embodiment, there is a gap between the reflecting plate 14 and the main board 12 ; specifically, please refer to FIG. 7 , the reflecting plate 14 in FIG. 7 is not connected to the main board 12 and does not share a common ground. In another embodiment, the reflecting plate 14 is connected to the main board 12 and has a common ground; specifically, please refer to FIG. 4 , FIG. 6 and FIG. 8 . Connected and common ground can greatly increase the effect of reflection.

In one embodiment, the antenna 13 can be a ceramic antenna, so that the wireless earphone 1 can conform to a miniaturized design. Wherein, the ceramic antenna may adopt an inverted F-shaped (inverted Fantenna, IFA) antenna structure and be coupled with the ground pin to generate resonance from 2.4 GHz to 2.5 GHz (ie, 2.4 GHz frequency band).

Please refer to FIG. 6 and FIG. 9, FIG. 9 is an enlarged view of area A in FIG. The pad 137, the parasitic radiator 138 and the main radiator 139; the welding pad 136, the welding pad 137, the parasitic radiator 138 and the main radiator 139 are arranged on the ceramic substrate 133, and the welding pad 136 and the welding pad 137 are welded on the headroom 121 The feed point 131 is connected to the main board 12 and is used to receive the feed signal; the feed layer 132 is arranged on the clearance area 121, and one end is connected to the feed point 131; The feed signal at point 131 generates resonance, and is connected to the ground layer 134 arranged on the clearance area 121; the parasitic radiator 138 is connected to the ground layer 135 arranged on the clearance area 121, and is coupled with the main radiator 139 to generate resonance; the ground layer 134 and the ground layer 135 share the ground with the motherboard 12 respectively. Therefore, the antenna 13 can generate resonance in the 2.4 GHz frequency band through the parasitic radiator 138 and the main radiator 139 .

Please refer to FIG. 2 , the width W of the main board 12 can extend along the first direction D1, and the length L1 of the main board 12 can be parallel to the extension direction D2 of the ear handle housing 111, wherein the first direction D1 is when the ear handle housing 111 faces The direction of the in-ear housing 113 . The width W of the main board 12 extends along the first direction D1 (that is, the first surface 122 on which the antenna 13 is disposed on the main board 12 does not face the first direction D1), which can prevent the antenna 13 from being disposed on the headroom 121 on the first surface 122 Sometimes the received signal is not good, or the reflector 14 reflects most of the radiation, resulting in power loss. In addition, the first surface 122 on which the antenna 13 is disposed does not face the opposite direction of the first direction D1, which can avoid the situation that the antenna 13 transmits and receives signals unstable or interrupted when the user touches or manipulates the wireless earphone 1 . In addition, the wireless earphone 1 can also include: a battery unit 15, a touch control unit 16, a charging pin 18 connected to the main board 12, a flexible circuit board 19 and a small board 20, and the ear shell 113 can be provided with a sound chamber outlet 1131; the battery unit 15 connect the main board 12, the touch unit 16, the broadcast unit 17, the flexible circuit board 19 and the small board 20 to provide power, and connect the charging pin 18 to obtain power; the touch unit 16 is used to provide the user with a wireless earphone 1; the broadcasting unit 17 corresponds to the sound cavity outlet 1131, and is used to broadcast the audio signal received by the antenna 13. Among them, the flexible circuit board 19 and the small board 20 are used as carriers for transmitting and connecting signals in the wireless earphone 1; the battery unit 15, the touch control unit 16, the flexible circuit board 19 and the small board 20 are arranged in the corner housing 112; the charging pin 18 is disposed in the ear handle housing 111 and connected to the end of the main board 12 away from the corner housing 112 . It should be noted that, in order to avoid the drawing of FIG. 2 being too complicated, the connection lines between the components in the wireless earphone 1 are omitted.

In one embodiment, since the touch control unit 16 for the user to control is arranged in the corner housing 112, in order to avoid the situation that the antenna 13 transmits and receives signals unstable or interrupted when the user touches or manipulates the wireless earphone 1, Therefore, the clearance area 121 is located at an end of the main board 12 away from the corner housing 112 .

Please refer to FIG. 10 , which is a radiation pattern of the antenna of the wireless earphone in FIG. 2 working on a plane of Theta=90° at a frequency of 2.43 GHz. Figure 10 is a polar coordinate view, where different positions in the circumferential direction represent different vertical (Phi) angles in degrees (°), and the distance from different positions to the coordinate center represents radiation intensity in decibels (dBi). As shown in Figure 10, in the plane of Theta=90°, the maximum amplitude of the main lobe is 3.3dBi, the maximum radiation direction of the main lobe is 170°, the angular width of the main lobe is 92.3°, and the side lobe level is -3.0dBi . Therefore, the antenna 13 of the wireless earphone 1 can realize a directional design, and because the maximum amplitude of the main lobe is 3.3dBi, it can provide stable signal output and prevent signal interference and interruption. The electromagnetic radiation is isolated from the user's head, reducing the impact of electromagnetic radiation on the user's head.

In addition, the present application also provides a binaural true wireless earphone, which includes: two wireless earphones 1, the two wireless earphones 1 are respectively a left earphone and a right earphone, and the left earphone and the right earphone respectively receive audio signals from electronic devices , Realize binaural synchronous transmission technology (ie TWS+ technology). Wherein, the difference between the left earphone and the right earphone is only in the shape design of the corner shell 112 and the in-ear shell 113 .

To sum up, in the embodiment of the present application, through the setting of the reflection plate in the ear handle housing (that is, the reflection plate is located on the side of the ear handle housing facing the in-ear housing), high-gain directional performance can be achieved, and stable The radio frequency signal output prevents signal interference and interruption. At the same time, after the user wears the wireless headset, it also isolates the electromagnetic radiation from the user's head, reducing the impact of electromagnetic radiation on the user's head.

Although the present invention is described using the above embodiments, it should be noted that these descriptions are not intended to limit the present invention. On the contrary, this model covers modifications and similar arrangements obvious to those skilled in the art. Therefore, the claims must be construed in the broadest manner to include all obvious modifications and similar arrangements.

1: Wireless earphones 11: Shell 12: Motherboard 13: Antenna 14: reflector 15: Battery unit 16:Touch unit 17: Broadcast unit 18: Charging pin 19: Flexible printed circuit board 20: small plate 111: ear handle shell 112: corner housing 113: ear shell 121: Clearance area 122: first surface 131: feed point 132: Feed layer 133: ceramic substrate 134: Ground layer 135: ground plane 136: welding pad 137: welding pad 138: Parasitic radiator 139: Main Radiator 141: Concave 1111: Cavity 1131: sound cavity outlet D1: the first direction D2: Extension direction L1, L2, L3: Length W: width

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the schema: FIG. 1 is a perspective view of a first embodiment of a wireless earphone according to the present application; Fig. 2 is an exploded view of an embodiment of the wireless earphone of Fig. 1; FIG. 3 is a schematic view of the wireless earphone in FIG. 1; FIG. 4 is a combined schematic view of the wireless earphone in FIG. 2 without a casing; Fig. 5 is a combined schematic view of the wireless earphone in Fig. 2 without a casing; Fig. 6 is a combined schematic diagram of an embodiment in which the wireless earphone of Fig. 2 does not include a corner case and an in-ear case; Fig. 7 is a combined schematic view of an embodiment of a wireless earphone according to the present application that does not include a corner housing and an in-ear housing; Fig. 8 is a combined schematic view of another embodiment of a wireless earphone according to the present application that does not include a corner housing and an in-ear housing; FIG. 9 is an enlarged view of area A of FIG. 6; and FIG. 10 is a radiation pattern diagram of the antenna of the wireless earphone in FIG. 2 working on a plane of Theta=90° at a frequency of 2.43 GHz.

1: Wireless earphones

12: Motherboard

13: Antenna

14: reflector

15: Battery unit

16:Touch unit

17: Broadcast unit

18: Charging pin

19: Flexible printed circuit board

20: small plate

111: ear handle shell

112: corner housing

113: ear shell

121: Clearance area

122: first surface

141: Concave

1111: Cavity

1131: sound cavity outlet

D1: the first direction

D2: Extension direction

L1, L2, L3: Length

W: width

Claims (12)

A wireless earphone, which comprises: a shell, including an ear handle shell, a corner shell connected to a top end of the ear handle shell, and an in-ear shell matched and fixed with the corner shell; a main board, arranged on In a cavity in the ear handle housing; an antenna is arranged on a clearance area of the main board; a reflector is arranged in the cavity in the ear handle housing and is located on the ear handle housing facing the One side of the in-ear housing reflects a radio frequency signal emitted by the antenna; and a broadcasting unit is arranged in the corner housing and connected to the antenna arranged on the main board to broadcast an audio signal received by the antenna. The wireless earphone according to Claim 1, wherein there is a gap between the reflecting plate and the main board. The wireless earphone according to claim 1, wherein the reflector is connected to the main board and shared with the ground. The wireless earphone according to claim 1, wherein, a length of the reflecting plate parallel to an extending direction of the ear handle housing is greater than a length of the headroom parallel to the extending direction of the ear handle housing, and the reflection The board corresponds to the installation position of the antenna. The wireless earphone according to claim 1, wherein the antenna is a ceramic antenna. The wireless earphone according to claim 5, wherein the ceramic antenna adopts an inverted F-shaped antenna structure and is coupled to a ground pin. The wireless earphone according to claim 1, wherein the reflector is a U-shaped reflector, and a concave surface of the U-shaped reflector faces the main board. The wireless earphone according to claim 7, wherein the concave surface of the U-shaped reflector has a radius of curvature, and different sizes of the radius of curvature correspond to different radiation patterns of the wireless earphone. The wireless earphone according to claim 7, wherein the ear handle housing is a circular rod-shaped hollow housing, the concave surface of the U-shaped reflector has a radius of curvature, and the concave surface of the U-shaped reflector has a radius of curvature. The radius of curvature is the same as a radius of the lug shell. The wireless earphone according to claim 1, wherein the headroom is located at an end of the main board away from the corner housing. The wireless earphone according to claim 1, wherein the broadcast unit includes a speaker. A binaural true wireless earphone, comprising two wireless earphones as described in any one of claims 1 to 11, the two wireless earphones are respectively a left earphone and a right earphone, wherein the left earphone and the right earphone The audio signals from an electronic device are respectively received.

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