| 摘要 |
PROBLEM TO BE SOLVED: To solve problems in a conventional detection structure for detecting an impact such as falling by means of an electric circuit using an impact sensor that it is hard to surely detect the impact since the impact can not be detected when a failure occurs in an electric circuit system and that a mounting area for the impact sensor, etc. is necessary. SOLUTION: A layered structure is provided comprising tapes 8a (8b) in a space originally having existed in an enclosure, support bodies (pressure-sensitive paper) 6a (6b) having a color former layer, and support bodies (pressure-sensitive paper) 7a (7b) having a color developer layer. By using a weight 4a of an existing vibration motor 4, when an impact exceeding a fixed value is imposed thereon, the weight 4a is brought into contact with the layered structure, causing the color of the support body (pressure-sensitive paper) 7a or 7b having the developer layer to change into the color of the support body (pressure-sensitive paper) 6a or 6b having the former layer. Thereby, imposition of an impact exceeding a fixed value can be determined more reliably by a short time analysis neither by changing an existing mounting space nor by using any electric circuit. COPYRIGHT: (C)2004,JPO&NCIPI
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