# US 11,445,293 B2 · Earphones

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- Number: US 11,445,293 B2
- Document ID: US11445293B2
- Status: Granted
- Kind: B2
- Application number: 17/293,912
- Filed: 2018-11-25
- Published: 2022-01-20
- Granted: 2022-09-13
- Earliest claimed: 2018-11-25
- Assignees: Move, Inc.
- Applicants: Move Company Limited
- Inventors: Akihiko Hosaka
- Web page: https://patentgrep.com/patent/US11445293B2

## CPC

- H04R 1/1058: {Manufacture or assembly}
- H04R 1/345: {for loudspeakers}
- H04R 1/1016: {Earpieces of the intra-aural type}
- H04R 2420/07: Applications of wireless loudspeakers or wireless microphones
- 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

An earphone includes a sound guide tube extending in a uniaxial direction; a speaker offset to one side of a direction orthogonal to the uniaxial direction and on side of a base end of the sound guide tube; a wireless communication board on side of a back face of the speaker with respect to the sound guide tube; and a housing including a front part and rear part, the front part supporting the base end of the sound guide tube and expanding from the base end to the one side via an inclined surface inclining to the uniaxial direction, to accommodate the speaker, and the rear part expanding from the base end to other side of the orthogonal direction to accommodate the wireless communication board, and a distance between central axes of the speaker and the sound guide tube is smaller than an internal radius of the sound guide tube.

## Claims

### Claim 1

An earphone comprising:
a sound guide tube extending in a uniaxial direction;
a speaker offset to one side of a direction orthogonal to the uniaxial direction and disposed on side of a base end of the sound guide tube, the speaker outputting sounds to the uniaxial direction;
a wireless communication board disposed on side of a back face of the speaker with respect to the sound guide tube; and
a housing including a front part and rear part, the front part supporting the base end of the sound guide tube and expanding from the base end to the one side via an inclined surface that inclines to the uniaxial direction, to accommodate the speaker, and the rear part expanding from the base end to other side of the orthogonal direction to accommodate the wireless communication board,
wherein
a separation distance between a central axis of the speaker and a central axis of the sound guide tube is smaller than an internal radius of the sound guide tube.

### Claim 2 (depends on 1)

The earphone according to claim 1, wherein
the inclined surface inclines at an angle of 25 to 35 degrees to the orthogonal direction and is formed in a recessed shape.

### Claim 3 (depends on 1)

The earphone according to claim 1, wherein
the front part has a shape decentered from the base end of the sound guide tube to one side of the direction orthogonal to the uniaxial direction when seen from the one side to the other side of the uniaxial direction, and
the rear part has a shape having, as a long axis direction, the direction orthogonal to the uniaxial direction, when seen from the one side to the other side of the uniaxial direction.

### Claim 4 (depends on 1)

The earphone according to claim 1, wherein the rear part accommodates a power supply between the speaker and the wireless communication board, the power supply supplying electric power to the speaker and the wireless communication board.

### Claim 5 (depends on 1)

The earphone according to claim 1, wherein the rear part includes an operation screen on side of a back face with respect to the sound guide tube.

### Claim 6

An earphone, comprising:
a sound guide tube extending in a uniaxial direction;
a speaker offset to one side of a direction orthogonal to the uniaxial direction and disposed on side of a base end of the sound guide tube, the speaker outputting sounds to the uniaxial direction;
a wireless communication board disposed on side of a back face of the speaker with respect to the sound guide tube; and
a housing including a front part and a rear part, the front part supporting the base end of the sound guide tube and expanding from the base end to the one side via an inclined surface that inclines to the uniaxial direction, to accommodate the speaker, and the rear part expanding from the base end to other side of the orthogonal direction to accommodate the wireless communication board,
wherein
the rear part includes an operation screen on a back face with respect to the sound guide tube.