Quick Lock Coupling Guide Groove Prevents Unintentional Unlocking

The patent transforms the unlocking mechanism from a single axial movement to a two-dimensional operation requiring both axial movement and rotational movement. The guide groove with its first axial section and second oblique section forces the guide pin to undergo both axial and rotational displacement, preventing unintentional unlocking while maintaining operational simplicity

The patent applies preliminary anti-action by designing the guide groove structure to prevent the harmful effect of spring failure before it can cause unintentional unlocking. The oblique second section of the guide groove creates a mechanical constraint that prevents rotational movement unless deliberately initiated, counteracting the potential harmful effect of spring failure

The patent merges the guide groove structure directly into the unlocking sleeve, combining the safety function with the existing unlocking component. This integration approach adds the necessary rotational constraint without requiring separate guide structures, thereby limiting the increase in device complexity