A manual device opening and closing a lock of a door or window has a control rod; a supporting body having a cavity for the control rod; a manual gripping member having a housing; and an adapter interconnecting the gripping member and the supporting body. The adapter arranged in the housing provided in said gripping member and in turn having a housing for the supporting body. An elastic axial extraction block of the supporting body from the control rod. A block between the adapter element and the supporting body and between the adapter element and the manual gripping member. A supporting plate of the supporting body fixed to the door or window and has a hole for an end of the supporting body to rotatably engage and extends outside the adapter element. A braking and stabilizing member for inserting of the control rod in the cavity of the supporting body.

The manual control device to open and close the lock of a door or window has a support body having a longitudinal cavity; a rotatable manual gripping member having a housing; a control rod engaged in the cavity of the support body; at least one quick blocking element of the axial extraction of the support body from the control rod, the support body having an end in the manual gripping member rigidly engaged in the housing and an end external of the gripping member. A support plate of the support body fixable to the door or window and having a hole to rotatably engage the external end of the support body. An angular position indexer of the manual gripping member, the indexer having a blocking seat and a one snap-fitting member engaged in the blocking seat, the blocking seat or snap-fitting member being formed integrally with the support body.

An anti-tilting transmission mechanism for doors and windows includes a first fixed plate, a second fixed plate, a transmission gear located between the first fixed plate and the second fixed plate, and a transmission rack, wherein: two guide though-holes are respectively provided on two ends of the second fixed plate; two threaded columns, which are capable of moving back and forth, are respectively located within the guide though-holes; two limit ribs are respectively located at an outer edge of a rear end of the threaded columns; two compression springs are respectively located between the first fixed plate and the threaded columns; each of the threaded columns has a threaded hole axially provided thereon, so that after passing through a door and window profile, screws are respectively tightened with the threaded holes on the threaded columns, so as to fix the transmission mechanism onto the door and window profile.

The invention concerns a closing system for doors and/or windows. The system comprises a first male element (20), also commonly called quadrello in Italian, intended to move a bolt by rotating it, and a second female element (10) suited to be operated in such a way as to set the male element or quadrello (20) rotating. The male element and the female element (20, 10) are suited, when in use and/or when applied, for example, to a door and/or window, to be mutually fixed in a configuration of use, wherein in the configuration of use or operation an end portion of the male element (20) is housed in a first corresponding seat (14) created in the female element (10). The system comprises a closing element (12) suited to mutually lock the male and female elements (20, 10) in the configuration of use or operation. The closing element (12) is housed in a second corresponding seat (11) created in the female element (10) and is configured in such a way that it can be switched in a locked position in which it is engaged with the male element or quadrello (20) through the insertion of the end portion of the male element or quadrello (20) in the first corresponding seat (14) created in the female element (10).