Patent ID: 8201846

Claim:
A backrest recline adjustment device adapted for connecting rotatably a backrest unit to a stroller frame of a stroller, said backrest recline adjustment device comprising a backrest recline adjustment assembly that includes: a stationary seat adapted to be connected fixedly to the stroller frame, and having a connecting surface that is provided with a first positioning unit; a rotary seat adapted to be connected fixedly to the backrest unit, and having a coupling surface that confronts said connecting surface of said stationary seat, that is provided with a second positioning unit corresponding in position to said first positioning unit, and that is formed with a groove, said rotary seat further having a first cam surface that is formed in said groove, said rotary seat being movable relative to said stationary seat between a releasing position, where said rotary seat is rotatable relative to said stationary seat, and a securing position, where said first positioning unit engages said second positioning unit for positioning said rotary seat relative to said stationary seat; a resilient component disposed for biasing said rotary seat toward said stationary seat; and a driving component disposed slidably in said groove of said rotary seat and provided with a second cam surface that abuts slidably against said first cam surface; wherein said driving component is movable relative to said rotary seat to drive movement of said second cam surface relative to said first cam surface, thereby moving said rotary seat from the securing position to the releasing position against biasing action of said resilient component.