Patent ID: 8109571

Claim:
A child safety seat comprising: a seat body; a backrest connected to the seat body, a hole being formed on the backrest and a first slot being formed on a first side of the backrest; a first side wing movably disposed through the first slot; and an adjusting mechanism movably disposed in the hole of the backrest and movably connected to the first side wing, the adjusting mechanism having an actuating part comprising an engaging part and a spring, the adjusting mechanism comprising: a fixing base disposed on the backrest and forming a containing space with the hole together, the engaging part movably sheathing a first positioning pillar of the fixing base, the spring being disposed between the engaging part and the first positioning pillar; and a driving part movably disposed in the containing space, protrusively disposed on the backrest, and movably connected to the first side wing, the driving part comprising a first hole; wherein the actuating part is operable for driving the first side wing to move relative to the first slot telescopically, and the spring is used for providing the engaging part with elastic force to make the engaging part be engaged with the first hole so as to constrain rotation of the driving part relative to the backrest.