# US 12,604,128 B2 · Open earphones with two pressure relief holes

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- Number: US 12,604,128 B2
- Document ID: US12604128B2
- Status: Granted
- Kind: B2
- Application number: 18/360,779
- Filed: 2023-07-27
- Published: 2024-05-02
- Granted: 2026-04-14
- Earliest claimed: 2022-10-28
- Assignees: Shenzhen Shokz Co., Ltd.
- Applicants: Shenzhen Shokz Co., Ltd.
- Inventors: Lei Zhang; Peigeng Tong; Guolin Xie; Yongjian Li; Jiang Xu; Tao Zhao; Duoduo Wu; Ao Ji; Xin Qi
- Web page: https://patentgrep.com/patent/US12604128B2

## CPC

- H04R 1/1008: {Earpieces of the supra-aural or circum-aural type}
- H04R 1/347: {for obtaining a phase-shift between the front and back acoustic wave}
- H04R 1/025: {Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture}
- H04R 1/10: Earpieces; Attachments therefor {; Earphones; Monophonic headphones (H04R1/28 takes precedence; stereophonic headphones H04R5/033)}
- H04R 1/1016: {Earpieces of the intra-aural type}
- H04R 1/105: {Earpiece supports, e.g. ear hooks (for stereophonic headphones H04R5/0335)}
- H04R 1/1066: {Constructional aspects of the interconnection between earpiece and earpiece support (earpiece support for monophonic headphones H04R1/105; earpiece support for stereophonic headphones H04R5/0335)}
- H04R 1/1075: {Mountings of transducers in earphones or headphones}
- H04R 1/2826: {for loudspeaker transducers}
- H04R 1/2873: {for loudspeaker transducers}
- H04R 7/06: comprising a plurality of sections or layers
- H04R 7/127: {dome-shaped}
- H04R 7/18: at the periphery
- H04R 9/02: Details
- H04R 9/025: {Magnetic circuit}
- H04R 9/045: {Mounting (H04R9/043 takes precedence)}
- H04R 9/06: Loudspeakers
- H04R 2460/09: Non-occlusive ear tips, i.e. leaving the ear canal open, for both custom and non-custom tips (H04R2460/11 takes precedence)
- H04R 2460/11: Aspects relating to vents, e.g. shape, orientation, acoustic properties in ear tips of hearing devices to prevent occlusion
- H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K)

## Abstract

The present disclosure provides an open earphone comprising a sound production component and an ear hook. In a wearing state, a first portion of the ear hook is hung between user's auricle and head, and a second portion of the ear hook extends towards a side of the auricle away from the head and connects to the sound production component to place the sound production component in a position near an ear canal but not blocking the ear canal. An inner side surface of the housing facing the auricle is provided with a sound outlet, one or more other side walls of the housing are provided with at least two pressure relief holes including a first pressure relief hole and a second pressure relief hole. A distance between centers of the first pressure relief hole and the second pressure relief hole is between 13.0 mm and 15.2 mm.

## Claims

### Claim 1

An open earphone, comprising:
a sound production component including a transducer and a housing accommodating the transducer, the transducer including a diaphragm;
an ear hook, wherein in a wearing state, a first portion of the ear hook is hung between an auricle and a head of a user, and a second portion of the ear hook extends towards a side of the auricle away from the head and connects to the sound production component to place the sound production component in a position near an ear canal but not blocking the ear canal, wherein
an inner side surface of the housing facing the auricle is provided with a sound outlet for guiding a sound generated at a front side of the diaphragm out and to the ear canal, one or more other side walls of the housing are provided with at least two pressure relief holes for guiding a sound generated at a rear side of the diaphragm out, the at least two pressure relief holes includes a first pressure relief hole and a second pressure relief hole, and a distance between a center of the first pressure relief hole and a center of the second pressure relief hole is in a range of 13.0 mm to 15.2 mm; and
wherein a distance from a center of the sound outlet to a mid-perpendicular plane of a connection line between the center of the first pressure relief hole and the center of the second pressure relief hole is in a range of 0 mm to 2 mm.

### Claim 2 (depends on 1)

The open earphone of claim 1, wherein the first pressure relief hole is provided on an upper side surface of the housing, and the second pressure relief hole is provided on a lower side surface of the housing.

### Claim 3 (depends on 2)

The open earphone of claim 2, wherein in the wearing state, the housing is at least partially inserted into an inferior concha, a distance from the center of the second pressure relief hole to a rear side surface of the housing is greater than a distance from the center of the first pressure relief hole to the rear side surface of the housing.

### Claim 4 (depends on 3)

The open earphone of claim 3, wherein a distance from the center of the first pressure relief hole to the inner side surface of the housing towards the auricle is in a range of 4.24 mm to 6.38 mm, or a distance from the center of the first pressure relief hole to the rear side surface is in a range of 10.44 mm to 15.68 mm.

### Claim 5 (depends on 3)

The open earphone of claim 3, wherein a distance from the center of the second pressure relief hole to the inner side surface of the housing towards the auricle is in a range of 4.24 mm to 6.36 mm, or a distance from the center of the second pressure relief hole to the rear side surface is in a range of 13.51 mm to 20.27 mm.

### Claim 6 (depends on 2)

The open earphone of claim 2, wherein in the wearing state, the housing is at least partially inserted into an inferior concha, and an area of the second pressure relief hole is smaller than an area of the first pressure relief hole.

### Claim 7 (depends on 6)

The open earphone of claim 6, wherein the area of the first pressure relief hole is in a range of 3.78 mm2 to 22.07 mm2, and the area of the second pressure relief hole is in a range of 2.78 mm2 to 16.07 mm2.

### Claim 8 (depends on 6)

The open earphone of claim 6, wherein the transducer includes a magnetic circuit assembly, the magnetic circuit assembly is used to provide a magnetic field, and an overlapping area of projections of the first pressure relief hole and the second pressure relief hole on a long-axis center plane of the magnetic circuit assembly is not larger than 10.77 mm2.

### Claim 9 (depends on 8)

The open earphone of claim 8, wherein a length of a connection line of projection points of the center of the first pressure relief hole and the center of the second pressure relief hole on a plane where a bottom surface of the magnetic circuit assembly is located is in a range of 8.51 mm to 15.81 mm.

### Claim 10 (depends on 2)

The open earphone of claim 2, wherein a distance between a projection point of the center of the first pressure relief hole on a sagittal plane and a projection point of a midpoint of an upper boundary of the inner side surface on the sagittal plane is not larger than 2 mm.

### Claim 11 (depends on 10)

The open earphone of claim 10, wherein a distance between the projection point of the midpoint of the upper boundary of the inner side surface on the sagittal plane and a projection point of a center of an ear canal opening of the ear canal on the sagittal plane is in a range of 12 mm to 18 mm.

### Claim 12 (depends on 10)

The open earphone of claim 10, wherein a distance between the projection point of the center of the first pressure relief hole on the sagittal plane and a projection point of a center of an ear canal opening of the ear canal on the sagittal plane is in a range of 12 mm to 18 mm.

### Claim 13 (depends on 10)

The open earphone of claim 10, wherein a distance between a projection point of the center of the second pressure relief hole on the sagittal plane and a projection point of a center of an ear canal opening of the ear canal on the sagittal plane is in a range of 6.88 mm to 10.32 mm.

### Claim 14 (depends on 10)

The open earphone of claim 10, wherein a distance between a projection point of the center of the second pressure relief hole on the sagittal plane and the projection point of the midpoint of the upper boundary of the inner side surface on the sagittal plane is in a range of 14.4 mm to 21.6 mm.

### Claim 15 (depends on 2)

The open earphone of claim 2, wherein a distance between a projection point of the center of the first pressure relief hole on a sagittal plane and a projection point of a ⅓ point of a lower boundary of the inner side surface on the sagittal plane is in a range of 13.76 mm to 20.64 mm.

### Claim 16 (depends on 15)

The open earphone of claim 15, wherein a distance between a projection point of the center of the second pressure relief hole on the sagittal plane and the projection point of the ⅓ point of the lower boundary of the inner side surface on the sagittal plane is in a range of 8.16 mm to 12.24 mm.

### Claim 17 (depends on 16)

The open earphone of claim 16, wherein a distance between the projection point of the ⅓ point of the lower boundary of the inner side surface on the sagittal plane and a projection point of a center of an ear canal opening of the ear canal on the sagittal plane is in a range of 1.76 mm to 2.64 mm.