Invention Grant
US08855357B2 Speaker diaphragm and speaker using same, and electronic equipment and device using said speaker, and speaker diaphragm manufacturing method
有权
扬声器隔膜和扬声器使用相同，以及电子设备和使用扬声器的设备，以及扬声器隔膜制造方法
- Patent Title: Speaker diaphragm and speaker using same, and electronic equipment and device using said speaker, and speaker diaphragm manufacturing method
- Patent Title (中): 扬声器隔膜和扬声器使用相同，以及电子设备和使用扬声器的设备，以及扬声器隔膜制造方法
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Application No.: US13511160Application Date: 2011-01-12
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Publication No.: US08855357B2Publication Date: 2014-10-07
- Inventor: Yoshimichi Kajihara , Yohei Jin , Toru Fujii
- Applicant: Yoshimichi Kajihara , Yohei Jin , Toru Fujii
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: RatnerPrestia
- Priority: JP2010-014964 20100127
- International Application: PCT/JP2011/000081 WO 20110112
- International Announcement: WO2011/093008 WO 20110804
- Main IPC: H04R1/00
- IPC: H04R1/00 ; H04R31/00 ; H04R7/12
Abstract:
A diaphragm is formed of paper manufactured from a first fiber material and a second fiber material. The first fiber material is beaten to have a given freeness, and the second fiber material is made by carbonizing bamboo fiber that has been fibrillated into a microfibril state. This structure allows the second fiber material to increase a rigidity of the diaphragm and also increase an internal loss, so that sound quality of the speaker that employs this diaphragm can be improved.
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