| 摘要 |
PROBLEM TO BE SOLVED: To provides a magic box which is introduced at a home party etc. inviting guests. SOLUTION: This magic box presents an arbitrary appearance of a jewel box etc. and composed of a main body part and a cover part capable of being opened/closed with respect to the main body. A hidden door part is equipped on a part of an arbitrary outside face of the magic box so as to normally rotate toward an open side around a shaft as the center. An engaging groove is set on the bottom end face and a polarizing spring plate with a tip end engaging part engaged therewith is set in a hollow part constructed in the main body part. The polarizing spring plate is attracted and rotated by an approaching magnet to release the tip end engaging part from the engaging groove of the hidden door part to open the hidden openable door. COPYRIGHT: (C)2004,JPO&NCIPI
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