US-20260129335-A1 - EARPHONES

US20260129335A1US 20260129335 A1US20260129335 A1US 20260129335A1US-20260129335-A1

Abstract

An earphone includes a first housing assembly, a battery, and a circuit board assembly. The battery is configured in a columnar shape. The circuit board assembly includes a first rigid circuit board, a second rigid circuit board, and a first flexible circuit board. Along an axial direction of the battery, the first rigid circuit board and the second rigid circuit board are spaced apart at two ends of the battery. The first flexible circuit board connects the first rigid circuit board and the second rigid circuit board. Projections of the first rigid circuit board and the second rigid circuit board along the axial direction of the battery at least partially overlap an end surface of the battery. A projection of the first flexible circuit board along a radial direction of the battery at least partially overlaps a peripheral surface of the battery.

Inventors

Chu Wang
Jianhua Xie

Assignees

Shenzhen Shokz Co., Ltd.

Dates

Publication Date: 20260507
Application Date: 20251229

Claims (20)

1 . An earphone, comprising: a first housing assembly configured to form a first accommodating space; and a battery and an antenna assembly provided in the first accommodating space, wherein the antenna assembly is connected to a radio frequency (RF) unit configured to transmit an RF signal, the battery is configured in a columnar shape, the antenna assembly is spaced apart from the battery by a preset interval along an axial direction of the battery, and a projection of the antenna assembly along the axial direction of the battery at least partially overlaps an end surface of the battery.
2 . The earphone of claim 1 , wherein the antenna assembly includes a first antenna section and a second antenna section, the first antenna section and the second antenna section are provided at two ends of the battery along the axial direction of the battery at an interval, and projections of the first antenna section and the second antenna section along the axial direction of the battery at least partially overlaps the end surface of the battery, respectively.
3 . The earphone of claim 2 , wherein in a wearing state, the axial direction of the battery intersects a horizontal plane of a human body.
4 . The earphone of claim 2 , wherein a ratio of an area of the first antenna section and a total projection area of the first antenna section along the axial direction of the battery is greater than or equal to 1.2, and a ratio of an area of the second antenna section and a total projection area of the second antenna section along the axial direction of the battery is greater than or equal to 1.2.
5 . The earphone of claim 2 , wherein each of the first antenna section and the second antenna section is configured in a sheet shape; a main surface of the first antenna section is disposed to face an end surface of the battery adjacent to the first antenna section, and a main surface of the second antenna section is disposed to face an end surface of the battery adjacent to the second antenna section; and an included angle between a normal direction of the main surface of the first antenna section and the axial direction of the battery, and an included angle between a normal direction of the main surface of the second antenna section and the axial direction of the battery are each less than or equal to 10 degrees.
6 . The earphone of claim 2 , wherein the first antenna section is connected to an RF port of the RF unit, the second antenna section is grounded, and the RF unit simultaneously transmits or receives signals through the first antenna section and the second antenna section.
7 . The earphone of claim 2 , further comprising a main control circuit board, wherein the main control circuit board includes a first plate body and a second plate body that are opposite to each other and spaced apart along the axial direction of the battery, the main control circuit board further includes a first flexible circuit board provided around a periphery of the battery along a radial direction of the battery, the first flexible circuit board is at least configured to connect the first plate body and the second plate body to a common ground, the RF unit is provided on the first plate body, the first plate body is provided between the first antenna section and an end surface of the battery adjacent to the first antenna section, the second plate body is provided with a ground point, the second plate body is provided between the second antenna section and an end surface of the battery adjacent to the second antenna section, and the second antenna section is connected to the ground point.
8 . The earphone of claim 7 , further comprising a second flexible circuit board connected to the first plate body and the first antenna section, and a third flexible circuit board connected to the second plate body and the second antenna section.
9 . The earphone of claim 8 , wherein an end of the second flexible circuit board away from the first plate body extends to form the first antenna section, and an end of the third flexible circuit board away from the second plate body extends to form the second antenna section.
10 . The earphone of claim 7 , wherein projections of the first plate body and the second plate body along the axial direction of the battery at least partially overlap the end surface of the battery, and a projection of the first flexible circuit board along the radial direction of the battery at least partially overlaps a peripheral surface of the battery.
11 . The earphone of claim 7 , wherein a ratio of an area of the first rigid circuit board to a total projection area of the first rigid circuit board along the axial direction of the battery is greater than or equal to 80%, and a ratio of an overlapping area between the second rigid circuit board and the end surface of the battery to a total projection area of the second rigid circuit board along the axial direction of the battery is greater than or equal to 80%.
12 . The earphone of claim 7 , wherein an included angle between a normal direction of a main surface of the first rigid circuit board and the axial direction of the battery, and an included angle between a normal direction of a main surface of the second rigid circuit board and the axial direction of the battery are both less than or equal to 10°.
13 . The earphone of claim 7 , wherein the first flexible circuit board includes a main body circuit board extending along the axial direction of the battery and connecting the first rigid circuit board and the second rigid circuit board; and a first branch circuit board and a second branch circuit board 2203 b , wherein a first end of the first branch circuit board and a first end of the second branch circuit board are located on two opposite sides of the main body circuit board along a circumferential direction of the battery, respectively.
14 . The earphone of claim 13 , further comprising a microphone and a wearing detection electrode provided in the first accommodating cavity; wherein a second end of the second branch circuit board is connected to the microphone, and a second end of the first branch circuit board is connected to the wearing detection electrode.
15 . The earphone of claim 14 , wherein from the second end of the first branch circuit board, the first branch circuit board extends and expands along a direction away from the main body circuit board to form the wearing detection electrode.
16 . The earphone of claim 13 , further comprising an electrode terminal for supplying power to the battery; wherein the main body circuit board is connected to the electrode terminal to connect to the battery.
17 . The earphone of claim 2 , further comprising a switching element, a detection element, and a control circuit, wherein the detection element is configured to detect an operating parameter of the antenna assembly or detect a relative positional relationship between the first antenna section and the second antenna section, and the control circuit is configured to control, based on a detection result of the detection element, the switching element to selectively connect one of the first antenna section and the second antenna section to an RF port of the RF unit.
18 . The earphone of claim 2 , further comprising a second housing assembly, an ear-hook portion, and a speaker module, wherein the second housing assembly is configured to form a second accommodating space, the speaker module is provided in the second accommodating space, the ear-hook portion connects the first housing assembly and the second housing assembly, in a wearing state, the first housing assembly and the second housing assembly form a clamping state on two sides of an auricle, the second housing assembly is located in a cavitas conchae, the ear-hook portion has a symmetry plane provided along a length direction of the ear-hook portion, and the axial direction of the battery intersects the symmetry plane.
19 . The earphone of claim 18 , wherein an antenna structure of the first antenna section is the same as an antenna structure of the second antenna section, and the first antenna section and the second antenna section are symmetrically provided on two sides of the symmetry plane.
20 . The earphone of claim 2 , wherein the first antenna section has a first antenna length, the second antenna section has a second antenna length, and a ratio of the first antenna length and the second antenna length is less than or equal to 1.2 and greater than or equal to 0.8.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN 2024/096712, filed on May 31, 2024, the contents of which are incorporated herein by reference to their entirety. TECHNICAL FIELD The present disclosure relates to the field of electronic devices, and in particular, to an earphone. BACKGROUND With the continuous popularization of electronic devices, the electronic devices have become indispensable social and entertainment tools in people's daily lives, and people's requirements for the electronic devices are also increasing. An earphone, as such an electronic device, has been widely used in people's daily lives. It may be used in conjunction with terminal devices such as mobile phones and computers to provide users with an auditory feast. According to a working principle of the earphone, it may generally be divided into an air conduction earphone and a bone conduction earphone; according to the way users wear the earphone, it may generally be divided into a headset earphone, an ear-clip earphone, and an in-ear earphone; according to the interaction way between the earphone and the electronic device, it may also be divided into a wired earphone and a wireless earphone. With increasing user requirements, current ear-clip earphones need to be configured with a large count of circuit components and an antenna assembly while also needing to be equipped with a battery of larger volume to meet power supply requirements. Therefore, how to reduce the spatial constraints of the battery on the antenna assembly and signal interference is a technical problem that urgently needs to be solved. SUMMARY One or more embodiments of the present disclosure provide an earphone. The earphone comprises a first housing assembly configured to form a first accommodating space, and a battery and an antenna assembly provided in the first accommodating space. The antenna assembly is connected to a radio frequency (RF) unit configured to transmit an RF signal. The battery is configured in a columnar shape, the antenna assembly is spaced apart from the battery by a preset interval along an axial direction of the battery. A projection of the antenna assembly along the axial direction of the battery at least partially overlaps an end surface of the battery. In some embodiments, the antenna assembly includes a first antenna section and a second antenna section. The first antenna section and the second antenna section are provided at two ends of the battery along the axial direction of the battery at an interval. Projections of the first antenna section and the second antenna section along the axial direction of the battery at least partially overlaps the end surface of the battery, respectively. In some embodiments, in a wearing state, the axial direction of the battery intersects a horizontal plane of a human body. In some embodiments, a ratio of an area of the first antenna section and a total projection area of the first antenna section along the axial direction of the battery is greater than or equal to 1.2. A ratio of an area of the second antenna section and a total projection area of the second antenna section along the axial direction of the battery is greater than or equal to 1.2. In some embodiments, each of the first antenna section and the second antenna section is configured in a sheet shape. A main surface of the first antenna section is disposed to face an end surface of the battery adjacent to the first antenna section, and a main surface of the second antenna section is disposed to face an end surface of the battery adjacent to the second antenna section. An included angle between a normal direction of the main surface of the first antenna section and the axial direction of the battery, and an included angle between a normal direction of the main surface of the second antenna section and the axial direction of the battery are each less than or equal to 10 degrees. In some embodiments, the first antenna section is connected to an RF port of the RF unit. The second antenna section is grounded. The RF unit simultaneously transmits or receives signals through the first antenna section and the second antenna section. In some embodiments, the earphone further comprises a main control circuit board. The main control circuit board includes a first plate body and a second plate body that are opposite to each other and spaced apart along the axial direction of the battery. The main control circuit board further includes a flexible connecting board provided around a periphery of the battery along a radial direction of the battery. The flexible connecting board is at least configured to connect the first plate body and the second plate body to a common ground. The RF unit is provided on the first plate body. The first plate body is provided between the first antenna section and an end surface of the battery adjacent to the first antenna section. The second plate body is pro