| 摘要 |
PROBLEM TO BE SOLVED: To provide a hinge structure which can not reduce strength on a hinge portion and has a good-looking character and has a simple structure of a forming mold and has a superior strength and does not generate any burr. SOLUTION: A container body 1 and a cover 2 are connected in the hinge structure via an elastic connection plate 11, and a first straight thin-walled connection portion 12 between the container body 1 and the elastic connection plate 11 and a second straight thin-walled connection portion 13 between the cover 2 and the elastic connection plate 11 are set to be in a foldable state. Folding portions 15 and 16, in which the second straight thin-walled connection portion 13 is the top and one side of the folding portions is extended to the cover 2 and the other side is extended to the elastic connection plate 11 as a thin-walled portion, are formed on both right and left sides of the second straight thin-walled connection portion 13. The folding portions 15 and 16 are reversed to a back side around the center of the second straight thin-walled connection portion 13 on the way when pushing the elastic connection plate 11 from a falling attitude of the cover 2 at a right angle to a plane surface prepared by the container body 1 and the elastic connection plate 11 in a direction of the cover 2, and the cover 2 stands up around the center of the second straight thin-walled connection portion 13 by means of its reversing force. COPYRIGHT: (C)2006,JPO&NCIPI
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