发明名称 |
SHEET METAL AND METHOD OF MANUFACTURING THREE-DIMENSIONAL STRUCTURE FROM THIS SHEET METAL |
摘要 |
The present invention belongs to a technical field for manufacturing a three-dimensional structure for an electronic device such as a radio wave shielding member through extension working of a metal plate having cuts. In conventional three-dimensional working of a metal plate, there is a problem in that a non-extension portion is wrinkled depending on extension of a cut. In the present invention, a connecting portion (3) extended in a second direction (D2) is provided at an equal pitch (p) in a first direction (D1) through an opening (4) having a rectangular cross-section in an intermediate portion (PB) between a cut forming portion (PC) having cuts (2) provided like a zigzag in the first direction (D1) and a non-extension portion (PA) having no cut in a metal plate (1). Consequently, even if the cut forming portion (PC) is extended, the connecting portion (3) is simply squashed and contracted and a boundary line (BL) portion is not deformed. <IMAGE> |
申请公布号 |
EP1293272(B1) |
申请公布日期 |
2007.08.01 |
申请号 |
EP20000940792 |
申请日期 |
2000.06.21 |
申请人 |
NEC-MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION |
发明人 |
ENMOTO, KAZUO;ITOU, MASANORI;IRIGUCHI, AKIHIRO;MORI, HIROKI |
分类号 |
B21D31/04;H05K5/04;H05K9/00 |
主分类号 |
B21D31/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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