EP-4738884-A1 - EARPHONE

EP4738884A1EP 4738884 A1EP4738884 A1EP 4738884A1EP-4738884-A1

Abstract

The present disclosure provides an earphone including a sound generating unit, an abutment unit, and an ear hook. The ear hook has a symmetry plane along a length direction of the ear hook. The abutment unit includes a first housing and a first microphone. The sound generating unit includes a second housing and a second microphone. The earphone further includes a processing circuit configured to perform noise reduction processing based on a first sound and a second sound. The earphone further includes a first reference plane located below the symmetry plane and parallel to the symmetry plane in a wearing state. A distance from the first reference plane to the symmetry plane is less than or equal to 5 mm. A first sound inlet includes a sound inlet end located on an outer wall surface of the first housing. The sound inlet end is entirely located on a side of the first reference plane facing the symmetry plane.

Inventors

ZHAO, TAO
TONG, Peigeng
LIU, HAOCHEN
XU, JIANG
ZHONG, LEI

Assignees

Shenzhen Shokz Co., Ltd.

Dates

Publication Date: 20260506
Application Date: 20240531

Claims (13)

An earphone, comprising: a sound generating unit, an abutment unit, and an ear hook, wherein the ear hook connects the sound generating unit and the abutment unit; in a wearing state, the sound generating unit and the abutment unit form a clamping state on two sides of an auricle, and the sound generating unit is located in a concha cavity; the ear hook has a symmetry plane along a length direction of the ear hook; the abutment unit includes a first housing and a first microphone disposed in the first housing, the first microphone collecting a first sound via a first sound inlet on the first housing; the sound generating unit includes a second housing and a second microphone disposed in the second housing, the second microphone collecting a second sound via a second sound inlet on the second housing; the earphone further comprises a processing circuit configured to perform noise reduction processing based on the first sound and the second sound; the earphone has a first reference plane located below the symmetry plane and parallel to the symmetry plane in the wearing state, wherein a distance from the first reference plane to the symmetry plane is less than or equal to 5 mm; the first sound inlet includes a sound inlet end located on an outer wall surface of the first housing; and the sound inlet end is entirely located on a side of the first reference plane facing the symmetry plane.
The earphone of claim 1, wherein at least a portion of the sound inlet end of the first sound inlet is located on a side of the symmetry plane facing the first reference plane, and a maximum linear distance from a hole edge of the sound inlet end of the first sound inlet located on the side of the symmetry plane facing the first reference planes to the symmetry plane is less than or equal to 4 mm.
The earphone of claim 1, wherein the earphone is set to support a left ear wearing state and a right ear wearing state; a count of the first reference planes is two, and the two first reference planes are symmetrically disposed on two sides of the symmetry plane, wherein one of the two first reference planes is located below the symmetry plane when the earphone is in the left ear wearing state, and the other one of the two first reference planes is located below the symmetry plane when the earphone is in the right ear wearing state; and the sound inlet end of the first sound inlet is entirely located between the two first reference planes.
The earphone of claim 3, wherein a count of the first sound inlets is two, the sound inlet ends of the two first sound inlets are arranged on two sides of the symmetry plane and are both entirely located between the two first reference planes.
The earphone of claim 4, wherein the sound inlet ends of the two first sound inlets are symmetrically arranged relative to the symmetry plane.
The earphone of claim 4, wherein a count of the first microphones is one, wherein the first microphone collects the first sound via the two first sound inlets; the sound inlet ends of the two first sound inlets are spaced apart from each other; and the two first sound inlets are in communication with each other.
The earphone of claim 1, wherein the sound inlet end of the first sound inlet is entirely located on a side of the symmetry plane away from the first reference plane.
The earphone of claim 7, wherein a minimum linear distance from the hole edge of the sound inlet end of the first sound inlet to the symmetry plane is greater than or equal to 5 mm.
The earphone of claim 1, wherein the second sound inlet includes a sound inlet end located on an outer wall surface of the second housing, and a minimum linear distance between a hole edge of the sound inlet end of the second sound inlet and a hole edge of the sound inlet end of the first sound inlet is greater than or equal to 15 mm.
The earphone of claim 9, wherein along a width direction of the ear hook, the sound inlet end of the first sound inlet and the sound inlet end of the second sound inlet are at least partially overlapped with the ear hook, respectively.
The earphone of claim 10, wherein the first sound inlet has a first axial direction pointing to an outside of the first housing; the second sound inlet has a second axial direction pointing to an outside of the second housing; and an angle between an orthogonal projection of the first axial direction on the symmetry plane and an orthogonal projection of the second axial direction on the symmetry plane is greater than or equal to 115 degrees.
The earphone of claim 1, wherein the first housing includes a main body and a transition unit, wherein the transition unit is disposed on an outer circumferential surface of the main body and is connected to the ear hook; the transition unit is arranged to be tapered in a direction away from the main body, to make the ear hook and the outer surface of the main body be connected smoothly; the first microphone is disposed in the transition unit; and the first sound inlet is disposed on the transition unit.
The earphone of claim 1, wherein the processing circuit is further configured to perform a wind noise detection based on the first sound and/or the second sound, and control the first microphone to be in an operating state and the second microphone to be in a non-operating state when a wind noise is detected to be greater than or equal to a preset threshold.

Description

TECHNICAL FIELD The present disclosure generally relates to the technical field of electronic devices, and in particular, to an earphone. BACKGROUND Earphones have been widely used in people's daily lives and may be used with electronic devices such as a mobile phone and a computer to provide a sound playback function for a user. An ear-clip earphone, usually small in size, is a new type of earphone and may be used by being clipped to an auricle of a wearer. Further, as the ear-clip earphone does not block an ear canal, the ear-clip earphone not only ensures safety in outdoor scenarios but also provides better wearing comfort compared with an in-earphone. However, sound reception effects of current ear-clip earphones are difficult to meet requirements. SUMMARY One or more embodiments of the present disclosure provide an earphone. The earphone includes a sound generating unit, an abutment unit, and an ear hook. The ear hook connects the sound generating unit and the abutment unit. In a wearing state, the sound generating unit and the abutment unit form a clamping state on two sides of an auricle, and the sound generating unit is located in a concha cavity. The ear hook has a symmetry plane along a length direction of the ear hook. The abutment unit includes a first housing and a first microphone disposed in the first housing, the first microphone collecting a first sound via a first sound inlet on the first housing. The sound generating unit includes a second housing and a second microphone disposed in the second housing, the second microphone collecting a second sound via a second sound inlet on the second housing. The earphone further includes a processing circuit configured to perform noise reduction processing based on the first sound and the second sound. The earphone has a first reference plane located below the symmetry plane and parallel to the symmetry plane in the wearing state. A distance from the first reference plane to the symmetry plane is less than or equal to 5 mm. The first sound inlet includes a sound inlet end located on an outer wall surface of the first housing; and the sound inlet end is entirely located on a side of the first reference plane facing the symmetry plane. In some embodiments, at least a portion of the sound inlet end of the first sound inlet is located on a side of the symmetry plane facing the first reference plane, and a maximum linear distance from a hole edge of the sound inlet end of the first sound inlet located on the side of the symmetry plane facing the first reference planes to the symmetry plane is less than or equal to 4 mm. In some embodiments, the earphone is set to support a left ear wearing state and a right ear wearing state. A count of the first reference planes is two, and the two first reference planes are symmetrically disposed on two sides of the symmetry plane. One of the two first reference planes is located below the symmetry plane when the earphone is in the left ear wearing state, and the other one of the two first reference planes is located below the symmetry plane when the earphone is in the right ear wearing state. And the sound inlet end of the first sound inlet is entirely located between the two first reference planes. In some embodiments, a count of the first sound inlets is two, the sound inlet ends of the two first sound inlets are arranged on two sides of the symmetry plane and are both entirely located between the two first reference planes. In some embodiments, the sound inlet ends of the two first sound inlets are symmetrically arranged relative to the symmetry plane. In some embodiments, a count of the first microphones is one. The first microphone collects the first sound via the two first sound inlets; the sound inlet ends of the two first sound inlets are spaced apart from each other; and the two first sound inlets are in communication with each other. In some embodiments, the sound inlet end of the first sound inlet is entirely located on a side of the symmetry plane away from the first reference plane. In some embodiments, a minimum linear distance from the hole edge of the sound inlet end of the first sound inlet to the symmetry plane is greater than or equal to 5 mm. In some embodiments, the second sound inlet includes a sound inlet end located on an outer wall surface of the second housing, and a minimum linear distance between a hole edge of the sound inlet end of the second sound inlet and a hole edge of the sound inlet end of the first sound inlet is greater than or equal to 15 mm. In some embodiments, along a width direction of the ear hook, the sound inlet end of the first sound inlet and the sound inlet end of the second sound inlet are at least partially overlapped with the ear hook, respectively. In some embodiments, the first sound inlet has a first axial direction pointing to an outside of the first housing; the second sound inlet has a second axial direction pointing to an outside of the second housing; and an a