LATCH-LOCK Russian patent published in 2016 - IPC F16B5/06 F16L59/12 

FIELD: construction.

SUBSTANCE: invention relates to latches-locks, which are used for mutual detachable connection of panels from detachable heat insulation with a protruding edge of side walls and used for heat insulation of power equipment, mostly, NPP equipment. The latch-lock has four identical hooks and a grip, including an attachment and a spring ring. The attachment is made of n angular components symmetrically arranged relative to the vertical axis of the attachment and meeting the condition $$\underset{n}{\Sigma }\theta \le {360}^{\circ },$$ at the same time n angular components are fixed to each other by m elastic wire rings, where m=1-5. Each angular component of the attachment is made in the form of an extended plate with parallel longitudinal sides, bent in half along the transverse bending line with formation of transverse sides in the form of ribs with the bending angle θ 0°<θ≤180°. On each transverse side of the extended plate symmetrically to the bending line there is a triangular ledge with upper and lower sides, crossing of which forms a top of the appropriate triangular ledge. The lower edge of each triangular ledge is arranged at the distance H from the upper longitudinal side of the extended plate, crossing of which with the upper side of the triangular ledge forms its upper edge, the distance between which and the bending line is less than the distance between the lower edge of the triangular ledge and the bending line by value W. Each extended plate is made with depth of more than H, but less than its transverse dimension, in each rib there is a longitudinal slot for placement of one of specified wire rings with the possibility to change the wire ring diameter in the range determined by slot length during latch-lock opening-closing. The edge of slots facing the axis of the attachment is located from the axis of the attachment at the distance equal to half of the inner minimum diameter of the wire ring, when it interacts with upper edges of triangular ledges, and at the distance T=H-Wctgγ from the bottom of the attachment, where γ - angle between each slot and axis of the attachment, placed in the above slots, and is capable of limited deviation from the axis of the attachment due to increased diameter of the elastic wire ring, and upper and lower edges of ribs of each composite part from the start of the bending line at both sides are processed along radius R and bent along radius r for free engagement of the hooks along radius r, and also for smooth rotation of each angular component along radius R during its diversion from the central axis of the attachment and to perceive loads in process of latch-lock operation.

EFFECT: invention provides for reduction of time spent for assembly and disassembly of blocks of unified detachable heat insulation panels.

3 cl, 14 dwg