Title:
SHEET METAL, METHOD OF MANUFACTURING THREE-DIMENSIONAL STRUCTURE, THREE-DIMENSIONAL STRUCTURE, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2001/097997
Kind Code:
A1
Abstract:
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.
Inventors:
ENMOTO KAZUO (JP)
ITOU MASANORI (JP)
IRIGUCHI AKIHIRO (JP)
MORI HIROKI (JP)
ITOU MASANORI (JP)
IRIGUCHI AKIHIRO (JP)
MORI HIROKI (JP)
Application Number:
PCT/JP2000/004072
Publication Date:
December 27, 2001
Filing Date:
June 21, 2000
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
ENMOTO KAZUO (JP)
ITO MASANORI (JP)
IRIGUCHI AKIHIRO (JP)
MORI HIROKI (JP)
ENMOTO KAZUO (JP)
ITO MASANORI (JP)
IRIGUCHI AKIHIRO (JP)
MORI HIROKI (JP)
International Classes:
B21D31/04; H05K5/04; H05K9/00; (IPC1-7): B21D31/04; H05K9/00
Foreign References:
| JPS5615160B2 | 1981-04-08 | |||
| JPS5913529A | 1984-01-24 | |||
| US4221032A | 1980-09-09 |
Other References:
See also references of EP 1293272A4
Attorney, Agent or Firm:
Yoshida, Shigeaki (Shiromi 1-chome Chuo-ku, Osaka-shi Osaka, JP)
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