FIELD: construction.
SUBSTANCE: flap turning angle limiter with a right slider and a hook on the left cover relates to bolts and other locking devices for flaps, in particular to devices limiting the opening angle of doors and windows in buildings and for their locking in the open position by means of movable elements arranged on the frame and the flap and coupled and uncoupled to allow further opening only in case the flap is closed. The limiter comprises of a hinged plate which has a slot, a bolt with a handle and hook, a guiding housing which accommodates the bolt and has a twisting notch, consisting of a transverse bore, of an initial bore and a locking bore connected with its ends and designed longitudinal and arranged in opposite directions from the transverse bore for moving the bolt handle along them. Longitudinal projections are made on the plate side facing the guiding housing. The right slider sits on the plate. A rack ratchet mechanism is mounted on the plate and comprises of a rack gear made in one of the slot longitudinal edges, and a pawl equipped with a release handle. The pawl is placed in the slot between the right slider and left cover located on the plate and overlapping both slot longitudinal edges and connected to the right slider to travel together with it and the pawl along the longitudinal slot. The left cover has a hook which can engage the bracket rigidly fixed on the bolt guiding housing. There is an auxiliary opening made in the left cover. A release handle comes out through it. The pawl may be spring-loaded and made springy of a resilient material.
EFFECT: increased reliability.
3 cl, 19 dwg
