Patent ID: 6824162
Filing Date: 2004-11-30
Classification: B62B

Abstract:
A backrest structure for a collapsible stroller which has a frame movable between a sitting position and a collapsed position, and a loading rack mounted on the frame having an anchor section which has a portion for seating a passenger, comprising:a backrest adjusting means pivotally mounting on the anchor section; a movable backrest pivotally engaging with the backrest adjusting means and being movable between a first position and a second position when the frame is at the sitting position, the backrest being substantially erected upwards at the first position to allow the passenger leaning thereon, the backrest being located at the second position when the frame is at the collapsed position; and a linkage bar having a first end pivotally engaging with the frame and a second end pivotally engaging with the backrest adjusting means, the linkage bar supporting the backrest adjusting means and the backrest at the first position when the frame is at the sitting position, the frame driving the linkage bar and moving the backrest adjusting means to turn the backrest synchronously with the frame to the second position for folding when the frame is moved from the sitting position to the collapsed position; wherein the frame includes: a latch means for latching the frame on the sitting position and releasing the frame from the sitting position; a first rack having a first end connecting to a handle and a second end pivotally engaging with the latch means; a second rack having a first end fastened to the latch means, a second end pivotally engaging with a plurality of front wheels, and a pivotal point located between the first end and the second end thereof to pivotally engage with one end of the anchor section of the loading rack; and a third rack having one end pivotally engaging with the latch means, a second end pivotally engaging with a plurality of rear wheels, and a pivotally point located between the first end and the second end thereof to pivotally engage with another end of the anchor section of the loading rack.