Universal security device intended to conveniently replace internal mechanisms presently used in mechanical locks

摘要

The invention relates to a security device whose internal simple mechanism is comprised of two adjacent, rectangular, equal and similarly perforated plates (11) which are interconnected by means of positioning pivots (12) which maintain them spaced apart and parallel. Between the plates of the mechanism, which are conditioned by the arrangement, shape and size of perforations (13-15), the movable parts comprised of flexure springs (16), security schackles (18) and bolts (21) are provided. The bolts are biased towards the central area of the mechanism by the permanent action of the springs (16), adapting themselves simultaneously to the depressions (29) existing at the edges of the key (Fig. 4) when the latter, due to its pointed configuration, penetrates the mechanism through the balls. Thus, the operation conditions of the security device are created; in this position, the perforations (19) of the security shackles are positioned facing the perforations (14) of the plates; thereby providing for the retraction of the pins and, consequently, the housing of the bolt in the device.