CN115361627A

CN115361627A - Wireless earphone and double-ear real wireless earphone

Info

Publication number: CN115361627A
Application number: CN202211206799.0A
Authority: CN
Inventors: 张湘; 付荣; 李源; 郭深慧; 杨先歌
Original assignee: Lanto Electronic Ltd
Current assignee: Lanto Electronic Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2022-11-18
Also published as: TWI847388B; TW202312745A

Abstract

The application discloses wireless earphone and real wireless earphone of ears. The wireless headset includes: the antenna comprises a shell, a main board, an antenna and a reflecting board; the shell comprises an ear handle shell, a corner shell connected to the top end of the ear handle shell and an ear insertion shell matched and fixed with the corner shell; the main board is arranged in the cavity in the ear handle shell, the width of the main board extends along a first direction, the length of the main board is parallel to the extending direction of the ear handle shell, and the first direction is the direction of the ear handle shell facing into the ear handle shell; the antenna is arranged on the clearance area of the mainboard; the reflecting plate is arranged in the cavity in the ear handle shell and positioned on one side of the ear handle shell facing into the ear shell, and reflects the radio-frequency signal emitted by the antenna. Therefore, the directional performance of broadband high gain is realized, stable radio frequency signal output can be provided, signal interference and interruption are prevented, and meanwhile, the influence of electromagnetic radiation on the head of a user is reduced when the user wears the wireless headset.

Description

Wireless earphone and double-ear-real wireless earphone

Technical Field

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

Background

Along with the rapid development of the wireless Bluetooth technology, the wireless Bluetooth device is more convenient for the life of people. Among them, TWS + (True Wireless Stereo plus) is a latest Wireless bluetooth technology, and is an upgraded version of True Wireless Stereo (TWS) technology.

The TWS + technology adopts the Bluetooth equipment to synchronously and directly send audio signals to the left earphone and the right earphone for playing, and the left earphone and the right earphone do not need to be connected in a matching way, so that the TWS + technology has the advantages of low delay, low power consumption and the like. Because the TWS + technology adopts double-ear simultaneous transmission, the left earphone and the right earphone do not need to be connected in a matching way, and when the left earphone and the right earphone are switched to be used, the wireless earphone adopting the TWS + technology cannot have the problem of signal disconnection.

However, the antenna provided in the conventional wireless headset radiates the radio frequency signal in the form of electromagnetic waves, and the radiation pattern of the antenna is usually not specially designed, so that there is a problem of electromagnetic radiation influence on the head of the user.

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

Disclosure of Invention

The embodiment of the application provides a wireless earphone and a binaural wireless earphone, which can effectively solve the problem that an antenna arranged in the existing wireless earphone brings electromagnetic radiation influence to the head of a user because no special radiation pattern design exists.

In order to solve the technical problem, the present application is implemented as follows:

the application provides a wireless headset, it includes: the antenna comprises a shell, a main board, an antenna and a reflecting board; the shell comprises an ear handle shell, a corner shell connected to the top end of the ear handle shell and an in-ear shell matched and fixed with the corner shell; the main board is arranged in the cavity in the ear handle shell, the width of the main board extends along a first direction, the length of the main board is parallel to the extending direction of the ear handle shell, and the first direction is the direction of the ear handle shell facing into the ear handle shell; the antenna is arranged on the clearance area of the mainboard; the reflecting plate is arranged in the cavity in the ear handle shell and positioned on one side of the ear handle shell facing into the ear shell, and the reflecting plate reflects the radio-frequency signal transmitted by the antenna.

The present application further provides a binaural true wireless headset, which includes: including two wireless earphones of this application, two wireless earphones are left earphone and right earphone respectively, and wherein, left earphone and right earphone receive the audio signal who comes from electronic device respectively.

In this application embodiment, the mainboard that disposes the antenna through in the ear handle casing sets up with the collocation of reflecting plate (the width of mainboard extends along first direction promptly, the length of mainboard is on a parallel with the extending direction of ear handle casing, the reflecting plate is located ear handle casing one side of going into the ear casing towards), realize high-gain directional performance, can provide stable radio frequency signal output, prevent signal interference and interrupt, simultaneously after the user wears wireless headset, also can keep apart electromagnetic radiation and user's head, reduce the influence of electromagnetic radiation to user's head.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a perspective view of a first embodiment of a wireless headset according to the present application;

FIG. 2 is an exploded view of one embodiment of the wireless headset of FIG. 1;

fig. 3 is a schematic view of the wireless headset of fig. 1;

fig. 4 is a first perspective assembly view of the wireless headset of fig. 2 without the housing;

FIG. 5 is a second perspective assembly view of the wireless headset of FIG. 2 without the housing;

FIG. 6 is a combined schematic view of an embodiment of the wireless headset of FIG. 2 without the corner housing and the in-ear housing;

FIG. 7 is a combined schematic view of an embodiment of a wireless headset according to the present application without a corner housing and an in-ear housing;

fig. 8 is a combined schematic view of another embodiment of a wireless headset 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 of a plane of Theta =90 ° for the antenna of the wireless headset of fig. 2 operating at a frequency of 2.43 GHz.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or similar components or process flows.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, method steps, operations, and/or components, but do not preclude the presence or addition of further features, integers, method steps, operations, components, and/or groups thereof.

It will 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 or 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.

Referring to fig. 1 to 5, fig. 1 is a perspective view of a wireless headset according to a first embodiment of the present disclosure, fig. 2 is an exploded view of the wireless headset of fig. 1, fig. 3 is a perspective view of the wireless headset of fig. 1, fig. 4 is a first perspective combination view of the wireless headset of fig. 2 without a housing, and fig. 5 is a second perspective combination view of the wireless headset of fig. 2 without a housing. As shown in fig. 1 to 5, in the present embodiment, the wireless headset 1 includes: a housing 11, a main board 12, an antenna 13 and a reflection plate 14; the shell 11 comprises an ear handle shell 111, a corner shell 112 connected to the top end of the ear handle shell 111, and an ear insertion shell 113 fixed with the corner shell 112 in a matching manner; the main board 12 is disposed in the cavity 1111 in the ear housing 111, and the width W of the main board 12 extends along a first direction D1, and the length L1 of the main board 12 is parallel to the extending direction D2 of the ear housing 111, wherein the first direction D1 is a direction toward the ear housing 113 in the ear housing 111; the antenna 13 is arranged on the clearance area 121 of the mainboard 12; the reflection plate 14 is disposed in the cavity 1111 inside the ear stem housing 111 and located on a side of the ear stem housing 111 facing the ear housing 113, and reflects the rf signal emitted by the antenna 13. Wherein, the antenna 13 radiates the radio frequency signal in the form of electromagnetic wave; the material of the housing 11 may be, but is not limited to, plastic; the motherboard 12 may be, but is not limited to, a Printed Circuit Board (PCB); the antenna 13 may be, but is not limited to, a ceramic antenna; the reflective plate 14 may be made of, but not limited to, a conductive metal material, or the reflective plate 14 may be a Laser-Direct-structuring (LDS) antenna or a Flexible Printed Circuit (FPC) antenna (i.e., the reflective plate 14 reflects electromagnetic waves radiated from the antenna 13 toward the ear housing 113 by the antenna 13 through a metal radiator on the LDS antenna or the FPC antenna).

It should be noted that the width W of the main board 12 of the present embodiment extends along the first direction D1 (i.e., the first surface 122 of the main board 12 on which the antenna 13 is disposed does not face the first direction D1), so as to avoid poor signal reception when the antenna 13 is disposed in the clearance area 121 on the first surface 122 or power loss caused by most of radiation reflected by the reflector 14. In addition, the first surface 122 provided with the antenna 13 does not face the opposite direction of the first direction D1, so as to avoid the situation that the transmission and reception of the signal by the antenna 13 are unstable or interrupted when the user touches or manipulates the wireless headset 1.

Through the matching arrangement of the main board 12 and the reflection board 14 configured with the antenna 13 in the ear-stem shell 111, even if the antenna 13 has no special radiation pattern design, the reflection board 14 can reflect the electromagnetic wave radiated by the antenna 13 towards the ear-entering shell 113, so that after the wireless earphone 1 is worn by a user, the electromagnetic radiation is isolated from the head of the user by the reflection board 14, and the influence of the electromagnetic radiation on the head of the user is reduced. In addition, the reflector 14 can reflect the electromagnetic wave radiated by the antenna 13 in a direction away from the ear housing 113, thereby achieving high-gain directional performance, providing stable rf signal output, and preventing signal interference and interruption.

In an embodiment, a length L2 of the reflective plate 14 parallel to the extending direction D2 of the ear stem shell 111 is greater than a length L3 of the clearance area 121 parallel to the extending direction D2 of the ear stem shell 111, and the reflective plate 14 corresponds to a position where the antenna 13 is disposed. In one example, the length L2 of the reflective plate 14 is greater than the length L1 of the main board 12, so as to effectively isolate the electromagnetic radiation from the head of the user after the user wears the wireless headset 1, and reduce the influence of the electromagnetic radiation on the head of the user (as shown in fig. 6, fig. 6 is a combined schematic view of an embodiment in which the wireless headset of fig. 2 does not include a corner housing and an in-ear housing). In another example, the length L2 of the reflective plate 14 is greater than the length L3 of the clearance area 121, so as to isolate most of the electromagnetic radiation from the head of the user after the user wears the wireless headset 1, thereby reducing the influence of the electromagnetic radiation on the head of the user (as shown in fig. 7 and 8, fig. 7 is a combined schematic view of an embodiment in which the wireless headset according to the present application does not include a corner housing and an ear housing, and fig. 8 is a combined schematic view of another embodiment in which the wireless headset according to the present application does not include a corner housing and an ear housing).

In an embodiment, the reflection plate 14 may be a U-shaped reflection plate, and the concave surface 141 of the U-shaped reflection plate faces the main board 12 (as shown in fig. 4 and 5) to reflect the electromagnetic waves radiated by the antenna 13 in a direction away from the ear housing 113, thereby achieving high-gain directional performance. The concave surface 141 of the U-shaped reflection plate has a curvature radius, and the sizes of different curvature radii correspond to different radiation field types of the wireless headset 1; that is, the radiation pattern of the wireless headset 1 (i.e., the reflection direction of the electromagnetic wave is controlled by the different curvature radii) can be adjusted by designing the concave surface 141 with different curvature radii.

In one embodiment, referring to fig. 3, the contour of the reflection plate 14 can match the inner contour of the ear-stem housing 111 (i.e. the ear-stem housing 111 is a round rod-shaped hollow housing, and the radius of curvature of the concave surface 141 of the reflection plate 14 is the same as the radius of the ear-stem housing 111), so as to facilitate the assembly of the wireless headset 1.

In one embodiment, the reflector 14 is spaced apart from the main plate 12 by a gap; specifically, referring to fig. 7, the reflection plate 14 of fig. 7 is not connected to the main board 12 and is not commonly grounded. In another embodiment, the reflector 14 is connected to the main board 12 and is common ground; specifically, referring to fig. 4, 6 and 8, the reflection plate 14 of fig. 4, 6 and 8 is connected to the main plate 12 and is grounded, so that the reflection effect can be greatly increased.

In an embodiment, the antenna 13 may be a ceramic antenna, enabling the wireless headset 1 to conform to a miniaturized design. The ceramic antenna may adopt an Inverted F Antenna (IFA) structure and be coupled to a ground pin to generate a 2.4 gigahertz (GHz) to 2.5GHz resonance (i.e., 2.4GHz band).

Referring to fig. 6 and 9, fig. 9 is an enlarged view of a region a of fig. 6, where the antenna 13 may include a feed point 131, a feed layer 132, a ceramic substrate 133, a ground layer 134, a ground layer 135, a solder pad 136, a solder pad 137, a parasitic radiator 138, and a main radiator 139; the solder pad 136, the solder pad 137, the parasitic radiator 138 and the main radiator 139 are disposed on the ceramic substrate 133, and the solder pad 136 and the solder pad 137 are soldered on the clearance area 121; the feeding point 131 is connected to the main board 12 and configured to receive a feeding signal; the feed layer 132 is disposed on the clearance area 121, and one end of the feed layer is connected to the feed point 131; the main radiator 139 is connected to the other end of the feed layer 132 to generate resonance based on a feed signal from the feed point 131, and is connected to the ground layer 134 disposed on the clearance area 121; the parasitic radiator 138 is connected to the ground layer 135 disposed on the clearance area 121, and coupled to the main radiator 139 to generate resonance; the ground layer 134 and the ground layer 135 are commonly grounded with the motherboard 12, respectively. Therefore, the antenna 13 can generate resonance in the 2.4GHz band through the parasitic radiator 138 and the main radiator 139.

Referring to fig. 2, the wireless headset 1 may further include: the battery unit 15, the touch unit 16, the broadcasting unit 17, the charging pin 18 connected with the main board 12, the FPC board 19 and the small board 20, and the ear-entering shell 113 may be provided with an audio cavity outlet 1131; the battery unit 15 is connected with the main board 12, the touch unit 16, the broadcasting unit 17, the FPC board 19 and the small board 20 to provide power, and connected with the charging pins 18 to obtain power; the touch control unit 16 is used for providing the user to operate and control the wireless headset 1; the broadcast unit 17 corresponds to the sound cavity outlet 1131, and is connected to the antenna 13 disposed on the main board 12, for broadcasting the audio signal received by the antenna 13. Wherein, the broadcasting unit 17 may include, but is not limited to, a speaker; the FPC 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 unit 16, the broadcasting unit 17, the FPC board 19 and the small board 20 are arranged in the corner shell 112; the charging pin 18 is disposed in the ear-stem housing 111 and connected to an 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 drawing of the connecting lines between the components in the wireless headset 1 is omitted.

In one embodiment, since the touch unit 16 for the user to control is disposed in the corner housing 112, in order to avoid unstable or interrupted signal transmission and reception of the antenna 13 when the user touches or controls the wireless headset 1, 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 plane with Theta =90 ° of the antenna of the wireless headset of fig. 2 operating at a frequency of 2.43 GHz. Fig. 10 is a polar view in which different positions in the circumferential direction represent different vertical (Phi) angles in degrees (°), and the distance from the different positions to the coordinate center represents the radiation intensity in decibels (dBi). As shown in fig. 10, in the plane Theta =90 °, the main lobe amplitude maximum is 3.3dBi, the main lobe maximum radiation direction is 170 °, the angular width of the main lobe is 92.3 °, and the side lobe level is-3.0 dBi. Therefore, the antenna 13 of the wireless headset 1 can realize directional design, and because the maximum value of the main lobe amplitude is 3.3dBi, stable signal output can be provided, signal interference and interruption are prevented, and meanwhile, after the user wears the wireless headset 1, electromagnetic radiation is isolated from the head of the user, and the influence of the electromagnetic radiation on the head of the user is reduced.

In addition, the present application also provides a binaural true wireless headset, which includes: 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 the electronic device, so that a binaural synchronous transmission technology (namely, a TWS + technology) is realized. Wherein the difference between the left earphone and the right earphone is only in the appearance design of the corner housing 112 and the ear-entering housing 113.

To sum up, in the embodiment of the application, the mainboard that disposes the antenna in the ear handle casing sets up with the collocation of reflecting plate (the width of mainboard extends along first direction promptly, the length of mainboard is on a parallel with the extending direction of ear handle casing, the reflecting plate is located ear handle casing orientation and goes into one side of ear casing), realize high-gain directional performance, can provide stable radio frequency signal output, prevent signal interference and interrupt, simultaneously after the user wears wireless headset, also can keep apart electromagnetic radiation and user's head, reduce the influence of electromagnetic radiation to user's head.

While the invention has been described using the above embodiments, it should be noted that these descriptions are not intended to limit the invention. Rather, this invention encompasses modifications and similar arrangements as would be apparent to one skilled in the art. The scope of the claims is, therefore, to be construed in the broadest possible manner to cover all such modifications and similar arrangements.

Claims

1. A wireless headset, comprising:

the shell comprises an ear handle shell, a corner shell connected to the top end of the ear handle shell and an ear insertion shell matched and fixed with the corner shell;

the main board is arranged in a cavity in the earstem shell, the width of the main board extends along a first direction, and the length of the main board is parallel to the extending direction of the earstem shell, wherein the first direction is the direction of the earstem shell towards the ear-entering shell;

the antenna is arranged on the clearance area of the mainboard; and

the reflecting plate is arranged in the cavity in the ear handle shell and positioned at one side of the ear handle shell facing the ear inlet shell and used for reflecting the radio-frequency signal transmitted by the antenna.

2. The wireless headset of claim 1, wherein the reflective plate is spaced apart from the main plate by a gap.

3. The wireless headset of claim 1, wherein the reflector is connected to the main board and is common to ground.

4. The wireless earphone according to claim 1, wherein a length of the reflection plate parallel to an extending direction of the ear stem housing is larger than a length of the clearance area parallel to the extending direction of the ear stem housing, and the reflection plate corresponds to a disposition position of the antenna.

5. The wireless headset of claim 1, wherein the antenna is a ceramic antenna.

6. The wireless headset of claim 5, wherein the ceramic antenna is in an inverted-F antenna configuration and is coupled to a ground pin.

7. The wireless earphone according to claim 1, wherein the reflection plate is a U-shaped reflection plate, and a concave surface of the U-shaped reflection plate faces the main board.

8. The wireless earphone according to claim 7, wherein the concave surface of the U-shaped reflection plate has a radius of curvature, and different sizes of the radius of curvature correspond to different radiation patterns of the wireless earphone.

9. The wireless headset of claim 1, wherein the clearance zone is located at an end of the main board away from the corner housing.

10. A binaural wireless headset comprising two wireless headsets as claimed in any of claims 1 to 9, the two wireless headsets being a left headset and a right headset, respectively, wherein the left headset and the right headset receive audio signals from an electronic device, respectively.