1. Latch with inviolable sentence, comprising a tubular guide (2) in which a pin (1) is housed, with possibility of sliding, which is integral with a movable sentence along a groove (10) provided in the tubular guide (2) to allow sliding of the pin (1), having at least the ends of the groove (10) with respective branches (11 and 12) on both sides to define properties of the sentence in the extreme positions, in the pin (1) is housed in the hole or pocket floor to hold the sheet (7) of the door in the closed position or hold the pin released from said groove to allow opening of the sheet (7); It characterized in that the sentence (3) has a configuration in "U" one of whose lateral branches (5) is fixed to the pin (1) and the other lateral branch (6) is housed in at least one receptacle provided in the leaves ( 7) of the door, by positioning the pin (1) in the pocket and turning it until the central branch (6) of the sentence (3) contact the edge of the sheet (7) to allow closing the other sheet (8) of the door and prevent opening of the latch.
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