Variable-airflow cloth, sound absorbing material, and vehicular part
First Claim
1. Cloth in which air permeability is variable by energization, the cloth comprising:
- a fibrous object comprising composite fibers, the composite fibers comprising;
an electrical-conductive polymeric material formed of a polymer which is electrically conductive; and
a material different from the electrical-conductive polymeric material, the different material being in direct contact with the electrical-conductive polymeric material;
electrodes which are attached to the fibrous object, and through which an electric current flows to the electrical-conductive polymeric material; and
a power supply which applies the electric current to the electrical-conductive polymeric material through the electrodes,wherein the composite fibers have a structure in which the material different from the electrical-conductive polymeric material is stacked on at least a part of a surface of the electrical-conductive polymeric material, or a structure in which either one of the electrical-conductive polymeric material and the material different from the electrical-conductive polymeric material penetrates the other material in a longitudinal direction,wherein when the power supply applies the electric current to the electrical-conductive polymeric material, the electrical-conductive polymeric material shrinks, and the electrical-conductive polymeric material causes a length difference from the material different from the electrical-conductive polymeric material, andwherein the composite fibers are arranged such that an air permeability or a sound absorption of the cloth is changed when the power supply applies the electric current.
1 Assignment
0 Petitions
Accused Products
Abstract
Cloth, in which air permeability is variable by energization, includes: a fibrous object composed of composite fibers, each of the composite fibers including: an electrical-conductive polymeric material; and a material different from the electrical-conductive polymeric material, the different material being directly stacked on the electrical-conductive polymeric material; and electrodes which are attached to the fibrous object, and energize the electrical-conductive polymeric material. Each of the composite fibers has a structure in which the material different from the electrical-conductive polymeric material is stacked on at least a part of a surface of the electrical-conductive polymeric material, or a structure in which either one of the electrical-conductive polymeric material and the material different from the electrical-conductive polymeric material penetrates the other material in a longitudinal direction. The cloth is capable of controlling the air permeability by a control factor enabling weight reduction and space saving.
12 Citations
18 Claims
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1. Cloth in which air permeability is variable by energization, the cloth comprising:
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a fibrous object comprising composite fibers, the composite fibers comprising;
an electrical-conductive polymeric material formed of a polymer which is electrically conductive; and
a material different from the electrical-conductive polymeric material, the different material being in direct contact with the electrical-conductive polymeric material;electrodes which are attached to the fibrous object, and through which an electric current flows to the electrical-conductive polymeric material; and a power supply which applies the electric current to the electrical-conductive polymeric material through the electrodes, wherein the composite fibers have a structure in which the material different from the electrical-conductive polymeric material is stacked on at least a part of a surface of the electrical-conductive polymeric material, or a structure in which either one of the electrical-conductive polymeric material and the material different from the electrical-conductive polymeric material penetrates the other material in a longitudinal direction, wherein when the power supply applies the electric current to the electrical-conductive polymeric material, the electrical-conductive polymeric material shrinks, and the electrical-conductive polymeric material causes a length difference from the material different from the electrical-conductive polymeric material, and wherein the composite fibers are arranged such that an air permeability or a sound absorption of the cloth is changed when the power supply applies the electric current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. Cloth in which air permeability is variable by energization, the cloth comprising:
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a fibrous object comprising composite fibers, the composite fibers comprising;
an electrical-conductive polymeric fiber formed of an electrical-conductive polymeric material; and
a polymeric fiber formed of a material different from the electrical-conductive polymeric material, the polymeric fiber being in direct contact with and formed on a surface of the electrical-conductive polymeric fiber, wherein the fibrous object is allowed to shrink in response to an electrical current supplied through the electrical-conductive polymeric fiber;electrodes which are attached to the fibrous object, and through which an electric current flows to the electrical-conductive polymeric fiber; and a power supply which applies the electric current to the electrical-conductive polymeric fiber through the electrodes, wherein the composite fibers have a structure in which the polymeric fiber is stacked on at least a part of a surface of the electrical-conductive polymeric fiber, or a structure in which either one of the electrical-conductive polymeric fiber and the polymeric fiber penetrates the other fiber in a longitudinal direction, wherein when the power supply applies the electric current to the electrical-conductive polymeric fiber, the electrical-conductive polymeric fiber shrinks, and the electrical-conductive polymeric fiber causes a length difference from the polymeric fiber, and wherein the composite fibers are arranged such that an air permeability or a sound absorption of the cloth is changed when the power supply applies the electric current.
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Specification