ATTACHMENT POINT OF TWO OBJECTS Russian patent published in 2014 - IPC F16B35/04 

FIELD: machine building.

SUBSTANCE: invention refers to attachment points of structural components, and is intended mainly for attachment of space objects at out-of-vehicle activity and is aimed at elimination of losses of fasteners, as well as locking of a fastener at dynamic loads, and at comfortable grab of a thread and tightening. The attachment point of two objects, which is installed in a through channel of one object, includes a pin with a screw thread on one end and a limit stop on the other end. The pin is equipped with a compression spring, and on it there are n longitudinal slots (n=1, 2…) between the limit stop and the thread, as well as a spring-loaded retainer in the form of a ball is introduced, which is installed in a cylindrical cavity made in the wall of the through channel of one object, at some distance from an inlet opening of the channel of that object, which exceeds sum of distance from the limit stop to the beginning of longitudinal slots of the pin and the ball radius, but is less than difference of distance from the limit stop to the end of longitudinal slots of the pin and radius of the ball interacting with one of the pin slots. On the pin, on the thread side there is an annular groove made at some distance from the pin face, which is less than distance from connection plane of objects to a cylindrical cavity, as well as there is a mating thread in the housing of the other object.

EFFECT: excluding losses of fasteners, as well as providing locking of the fastener at dynamic loads and comfortable grab of the thread and tightening.

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