Active torque anti-loose nut

Abstract

The invention discloses an active torque anti-loose nut. The active torque anti-loose nut is characterized by comprising a locking nut (1), a screw sleeve (25) is mounted on the locking nut (1), one end of the screw sleeve (25) is connected with one end of an elastic anti-loose body, and the other end of the screw sleeve (25) is connected with an elastic tension body; the other end of the elastic anti-loose body is connected with an anti-loose head (21); and in the work process, when normal-state tightening force is larger than loosening force and friction force borne by the locking nut, the locking nut moves in the tightening direction, and therefore reduction of the nut to the axial clamping force of a workpiece is achieved, and loosening is prevented.

Description

technical field [0001] The invention relates to a lock nut. Background technique [0002] At present, more and more fasteners are used in various industries. For some fasteners that are exposed to shock, vibration, and variable loads for a long time, the anti-loosening of nuts is especially important. At present, the known anti-loosening methods include frictional anti-loosening, mechanical anti-loosening and permanent anti-loosening. The mechanism of action is based on trying to keep the nut in a locked position, relative to the movement of the screw without loosening. When the nut has a tendency to loosen, a A force to prevent loosening is used to achieve the purpose of anti-loosening, but for loosening caused by the creep of the screw thread and the plastic annular depression of the supporting surface of the connected part, the essence is that there is no relative movement between the internal and external threads In the case of reduced axial clamping force, the current ...

AI Technical Summary

Problems solved by technology

At present, the known anti-loosening methods include frictional anti-loosening, mechanical anti-loosening and permanent anti-loosening. The mechanism of action is based on trying to keep the nut in a locked position, relative to the movement of the screw without loosening. When the nut has a tendency to loosen, a A force to prevent loosening is used to achieve the purpose of anti-loosening, but for loosening caused by the creep of the screw thread and the plastic annular depression of the supporting surface of the connected part, the essence is that there is no relative movement between the internal and external threads In the case of reduced axial clamping force, the current locknut is helpless

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