EXPANDABLE METAL MEMBRANE WITH ORTHOGONALLY ISOTROPIC BEHAVIOR

摘要

PURPOSE: An expandable metal membrane with orthogonally isotropic behavior is provided to facilitate clamping steadily and improve durability and the air-tightness by making bi-directional surface stiffness the same despite reducing surface stiffness. CONSTITUTION: An expandable metal membrane with orthogonally isotropic behavior comprises the followings. In a bidirectional expansion portion(140), wrinkles are formed to be expandable in the longitudinal direction and the traverse direction. The bidirectional expansion portion has a protruded pyramid shape and first groove portions(121,131) which are pitted in the edge connected to the side. A second groove portion(142) is formed in the upper part of the connection part with the bidirectional expansion portion. A clamping portion(150) is protruded on the both sides of the wrinkle end connected to the bidirectional expansion portion, so a clamping unit is clamped.