SHEET METAL, METHOD OF MANUFACTURING THREE-DIMENSIONAL STRUCTURE, THREE-DIMENSIONAL STRUCTURE, AND ELECTRONIC DEVICE

摘要

A method of manufacturing a three-dimensional structure for electronic device such as radio wave shield body by the drawing of a sheet metal having notches capable of preventing a non-drawn portion from being wrinkled according to the elongation of the notches, wherein joint portions (3) extending along a second direction (D2) are disposed, in a sheet metal (1), in an intermediate portion (PB) between a notch forming portion (PC) having the notches (2) disposed in staggered form along a first direction (D1) and a non-drawn portion (PA) without notches through opening parts (4) rectangular in cross-section, whereby, even if the notch forming portion (PC) is drawn, merely the joint portion (3) is collapsed and contracted, and a boundary line (BL) portion is not deformed.