| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a screwing tool for preventing any damage due to any external impact or ultraviolet ray when a data carrier is set to a screwing tool such as a bolt, a nut, and a washer, and furthermore any damage when it is screwed. <P>SOLUTION: A data carrier 6 is set to a recess 5 formed on the bottom face 4 of a head 3 of a metallic bolt 1, and the data carrier 6 is configured to perform electromagnetic communication with the outside by using a leakage magnetic flux passing through a magnetic leakage path 19 constituted of a fine clearance formed between the bottom face 4 of the head 3 of the volt 1 and a metallic member 12 in a status that the volt 1 is fixed to the metallic member 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
