| 摘要 |
PROBLEM TO BE SOLVED: To provide an indication mechanism convenient to handle for locking/ unlocking indication in letters and free from lower strength and rigidity of a bag lock. SOLUTION: An indicator 2 for serially declaring a pair of indications showing the locked/unlocked condition of a bag lock in the cross direction of a lever is guided to be movable to the direction of declaration inside a slender indication window 6 opening to the lever in its longitudinal direction and an engagement protrusion 16 is provided on the lower face of the indicator 2. In the normal condition that no outer force operates on the indicator 2, the indicator is energized so that the indication showing the unlocked condition of the bag appears on the indication window, while an indicator slide hole 18 which is inclined to the longitudinal direction of a strike and engaged with the engagement protrusion in a slidable manner is opened to the other end of the strike to move the indicator in the cross direction of the lever with wedge operation between the indicator slide hole 18 and the engagement protrusion 16 during locking/unlocking.
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