Diaphragm-edge integral moldings for speakers and acoustic transducers comprising same

A diaphragm for speakers which comprises a self-supporting, shaped body including a tightly woven synthetic polymer fiber cloth substrate which has, at least, a diaphragm portion and an edge portion shaped integrally with and extending from said diaphragm portion wherein said diaphragm portion of said cloth substrate has a polymer resin at least partially impregnated thereto in order to impart stiffness to said diaphragm portion and said edge portion has a flexible polymer material at least partially impregnated therein so that said edge portion is lower in stiffness than said diaphragm portion,

• wherein said cloth substrate is made of fibers individually coated with a thermoplastic polymer when spun.

A diaphragm for closed speakers which comprises self-supporting, shaped body including a tightly woven synthetic polymer fiber cloth substrate which has, at least, a diaphragm portion and an edge portion shaped integrally with and extending from said diaphragm portion wherein said diaphragm and edge portion of said cloth substrate each have a thermoplastic polymer resin at least partially, uniformly impregnated therein in a respective amount sufficient to control a high-cut frequency at a predetermined level,

• wherein said cloth substrate has a weave structure which consists of fine fibers and thick fibers, said thick fibers being woven in said cloth substrate at intervals in vertical and horizontal directions to impart appropriate stiffness to said cloth substrate.

A diaphragm for speakers which comprises:

• a self-supporting, shaped body including a tightly woven cloth substrate which is made of synthetic fibers selected from the group consisting of polyester fibers and polyamide fibers and has, at least, a diaphragm portion and an edge portion shaded integrally with and extending from said diaphragm portion;
• wherein said diaphragm portion of said cloth substrate has a polymer resin at least partially impregnated therein in order to impart stiffness to said diaphragm portion, said polymer resins selected from the group consisting of epoxy resins, acrylic resins and urethane, resins, and said edge portion has a rubber material at least partially impregnated therein so that said edge portion is lower in stiffness than said diaphragm portion,
• wherein said cloth substrate has a weave structure which consists of fine fibers and thick fibers, said thick fibers being woven in said cloth substrate at intervals in vertical and horizontal directions to impart appropriate stiffness to said cloth substrate.