Wireless tag

Abstract

A wireless tag includes a circuit module having an electromagnetic induction unit for generating an electromotive force by an electromagnetic wave of the outside and an information storing unit for storing information and outputting the information by the electromotive force, a base part on which the circuit module is disposed and which is foldable, and a locking member provided in the base part which electrically cuts off the electromagnetic induction unit in case that the base part is folded and locks the base part in the folded state. Further, the wireless tag includes a belt for attaching the circuit module to an object. The base part is folded with the belt disposed between its both sides and thus the belt becomes a ring shape. In addition, the locking member of the wireless tag is disposed near the information storing unit and has a projection part projecting from the base part and a base side insertion part into which the projection unit is inserted, and the belt has a hole into which the locking member is inserted in case of being disposed between both sides of the base part.

1 . A wireless tag comprising: 
 a main and a subsidiary electromagnetic induction units each of which generates an electromotive force by an electromagnetic wave of the outside; and    an information storing unit for storing information and outputting the information by the electromotive force,    wherein said subsidiary electromagnetic induction unit can be bent from its initial position where it is coplanar with said main electromagnetic induction unit to its layered position where it is layered on said main electromagnetic induction unit.    
   
   
       2 . A wireless tag as claimed in  claim 1 , wherein the direction of an electromotive force generated by said subsidiary electromagnetic induction unit with respect to said information storing unit is the same as that of an electromotive force of said main electromagnetic induction unit in the initial position, and the direction of an electromotive force generated by said subsidiary electromagnetic induction unit with respect to said information storing unit is the inverse of that of an electromotive force of said main electromagnetic induction unit in the layered position.  
   
   
       3 . A wireless tag as claimed in  claim 2 , wherein said information storing unit has a threshold voltage which makes the information output, and the threshold voltage is lower than voltage generated at both ends of said information storing unit by said main electromagnetic induction unit for an electromagnetic wave of a predetermined intensity of the outside and higher than voltage generated at both ends of said information storing unit by said main and subsidiary electromagnetic induction units for an electromagnetic wave of the predetermined intensity in the layered position.  
   
   
       4 . A wireless tag as claimed in  claim 3 , further comprising a cut part for electrically cutting off said subsidiary electromagnetic induction unit in case said subsidiary electromagnetic induction unit moves to the layered position, 
 wherein said subsidiary electromagnetic induction unit is electrically connected with said main electromagnetic induction unit in series.    
   
   
       5 . A wireless tag as claimed in  claim 1 , wherein the direction of an electromotive force generated by said subsidiary electromagnetic induction unit with respect to said information storing unit is the inverse of that of an electromotive force of said main electromagnetic induction unit in the initial position, and the direction of an electromotive force generated by said subsidiary electromagnetic induction unit with respect to said information storing unit is the same as that of an electromotive force of said main electromagnetic induction unit in the layered position.  
   
   
       6 . A wireless tag according to  claim 1 , further comprising: 
 a base part on which said electromagnetic induction units and said information storing unit are disposed, and which is foldable; and    a locking member provided in said base part which electrically cuts off at least one of said electromagnetic induction units when said base part is folded, and which locks said base part in the folded state.    
   
   
       7 . A wireless tag according to  claim 6 , further comprising: 
 an open cut part for electrically cutting off at least a part of at least one said magnetic induction unit when said base part is opened from its folded state.    
   
   
       8 . A wireless tag according to  claim 1 , further comprising: 
 a base part on which said electromagnetic induction units and said information storing unit are disposed, and which is foldable;    a locking member for locking said base part in its folded state; and    an open cut part for electrically cutting off at least a part of at least one said circuit magnetic induction unit when said base is opened from its folded state.    
   
   
       9 . A wireless tag according to  claim 8 , 
 wherein the locking member electrically cuts off at least one said electromagnetic induction unit when said base part is folded, and which locks said base part in the folded state.