FIELD: construction.
SUBSTANCE: flap turning angle limiter with the reference hole in the right slider and the other reference hole in the left cover relates to bolts and other locking devices for the flaps, in particular to devices for limiting the opening of doors and windows in buildings and for fixing them in the open position by means of the movable elements located on a frame and a flap, to be hitched and unhitched. The limiter comprises the hinged plate with a groove, the bolt with a handle and a hitch, the guiding housing, which accommodates the bolt and in which a winding slot is made, consisting of the transverse bore and the initial bore and the fixing bore connected with its ends, made longitudinal and arranged in opposite directions from the transverse bore with the possibility of moving the bolt handle along them. On the plate side facing the guiding housing at least one longitudinal projection is made with the height not exceeding the maximum possible movement path length of the bolt handle in the fixing bore. The right slider with a reference hole is put on the plate with the possibility of moving along it. A rack ratchet mechanism is arranged on the plate, comprising a rack made in one of the groove longitudinal edges, and an arresting device equipped with an adjustment handle. The arresting device is located in the groove between the right slider and the left cover placed on the plate overlapping with the both longitudinal groove edges and connected to the right slider with the possibility of moving together with the arresting device along the groove. The auxiliary opening is made in the left cover, through which the adjustment handle is moved out, as well as the other reference hole with the possibility for the hitch to pass sequentially through it, through the longitudinal groove and the reference hole in the right slider. The arresting device may be spring-loaded or made springy.
EFFECT: provision of further opening only in case the flap is closed.
3 cl, 19 dwg
