Diaphragm including a first vibrating part of a dome shape or flat shape and a second vibrating part of an annular shape and a loudspeaker using the diaphragm
First Claim
1. A diaphragm based on a film base of polyethylene terephthalate resin film, the diaphragm comprising:
- a first vibrating part of a dome shape, the first vibrating part including;
a central portion of the film base, being of a dome shape and made of polyethylene terephthalate resin,a thermosensitive adhesive resin film, provided only on the central portion, anda fiber sheet, being of a dome shape and made of a woven fabric using carbon fiber or an embossed nonwoven fabric, the fiber sheet being provided only on thermosensitive adhesive resin film; and
a second vibrating part of an annular shape, being made of polyethylene terephthalate resin and including a peripheral portion of the film base provided around the central portion of the film base,wherein a boundary between the central portion and the peripheral portion of the film base forms a valley.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provides a dome-shaped diaphragm fabricated based on a film base of polyethylene terephthalate resin film. The diaphragm includes a first vibrating part of a dome shape or a flat shape, and a second vibrating part of an annular shape. The second vibrating part includes a peripheral portion of the film base provided around a central portion of the film base. The first vibrating part includes the central portion of the film base, a thermosensitive adhesive resin film, provided on the central portion, and a fiber sheet made of a woven fabric using carbon fiber or an embossed nonwoven fabric. The fiber sheet is layered over the central portion with the thermosensitive adhesive resin film interposed therebetween.
-
Citations
10 Claims
-
1. A diaphragm based on a film base of polyethylene terephthalate resin film, the diaphragm comprising:
-
a first vibrating part of a dome shape, the first vibrating part including; a central portion of the film base, being of a dome shape and made of polyethylene terephthalate resin, a thermosensitive adhesive resin film, provided only on the central portion, and a fiber sheet, being of a dome shape and made of a woven fabric using carbon fiber or an embossed nonwoven fabric, the fiber sheet being provided only on thermosensitive adhesive resin film; and a second vibrating part of an annular shape, being made of polyethylene terephthalate resin and including a peripheral portion of the film base provided around the central portion of the film base, wherein a boundary between the central portion and the peripheral portion of the film base forms a valley. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification