Child safety seat and related spin lock mechanism

A child safety seat comprising:

• a base installed on a seat of a vehicle;
• a seat body movably disposed on the base and for accommodating a child, the seat body being switchable relative to the base between a first position and a second position;
• a spin lock mechanism for allowing and restraining switching movement of the seat body relative to the base, the spin lock mechanism comprising:
• a pivoting component coupled to one of the base and the seat body, the pivoting component including a first portion and a second portion, the second portion extending at an angle from the first portion, the first portion of the pivoting component being pivotally mounted to the one of the base and the seat body;
• and
• a locking component for engaging with and disengaging from another one of the base and the seat body, the locking component movably coupled to the second portion of the pivoting component such that a first end of the locking component is arranged at a first side of the pivoting component and a second end of the locking component is arranged at a second side of the pivoting component;
• wherein rotation of the pivoting component transforms the locking component from a locking position to a releasing position, and in the releasing position, the second end of the locking component is disengaged from a positioning slot formed in the another one of the base and the seat body and the seat body is rotatable relative to the base.