Invention Grant
- Patent Title: Speaker unit and acoustic device
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Application No.: US16091211Application Date: 2017-03-16
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Publication No.: US10674273B2Publication Date: 2020-06-02
- Inventor: Katsuya Endo , Yoshiyuki Kaku , Terutaka Yana
- Applicant: SONY CORPORATION
- Applicant Address: JP Tokyo
- Assignee: SONY CORPORATION
- Current Assignee: SONY CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Chip Law Group
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@117c1176
- International Application: PCT/JP2017/010683 WO 20170316
- International Announcement: WO2017/183370 WO 20171026
- Main IPC: H04R9/02
- IPC: H04R9/02 ; H04R1/34 ; H04R1/02 ; H04R1/24 ; H04R9/06 ; H04R1/26

Abstract:
A good output state of sound is ensured without a cost increase. A speaker unit includes: a vibration plate; a magnetic circuit; a bobbin to which an inner peripheral portion of the vibration plate is attached and which is varied in an axial direction by the magnetic circuit; and a cap attached to the vibration plate and located to face the bobbin in the axial direction of the bobbin, in which a center axis of the bobbin is arranged in a state of being inclined with respect to a horizontal plane or a vertical plane, and the cap is formed in a shape eccentric to the center axis of the bobbin. Thus, since the cap is eccentric to the center axis in a state in which the center axis of the bobbin is inclined with respect to the horizontal plane or the vertical plane, it is possible to freely control a pointing direction in an inclined direction, good directivity characteristics can be obtained, and a good output state of sound can be ensured without a cost increase.
Public/Granted literature
- US20190116425A1 SPEAKER UNIT AND ACOUSTIC DEVICE Public/Granted day:2019-04-18
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