Patent ID: 7128326

Claim:
A backrest tilting adjusting device of a stroller comprising: two supporting straps for supporting a backrest of the stroller, each supporting strap having a fixed end attached to a frame of the stroller and a free end; a strap direction guiding unit having an elongate opening formed therein to allow the free end of each of the straps passing through; and an adjusting assembly comprising: a base member attached to an upper portion of the backrest and having a bottom portion, a strap inlet end through which the free ends of the supporting straps enter the adjusting assembly, and a strap outlet end through which the free ends of the supporting straps exit the adjusting assembly, and a strap inserting direction being defined as the direction from strap inlet end to the strap outlet end; a one-way locking member pivotally coupled to the base member and arranged such that the straps entering the adjusting assembly pass between the base member and one-way locking member, and having an operating portion and a cam effecting portion for increasingly exerting a locking force to the straps; and a biasing member coupled to the base member and the one-way locking member for pivoting the one-way locking member toward the base member such that the cam effecting portion of the one-way locking member may engage with the straps and press them firmly against the base member, and wherein the pivoting direction of the one-way locking member is opposite to the strap inserting direction, and the cam effecting portion of the one-way locking member is adapted such that the locking force exerted by the cam effecting portion to the supporting straps against the base member will increase as the pivoted angle of the one-way locking member increase and eventually reach a level large enough to prevent the supporting straps from moving.