Frame of double-person baby carriage and frame folding mechanism thereof

A frame folding mechanism comprising an extended position and a folded position, wherein the frame folding mechanism further comprises:

• an upper link and a lower link, the upper link and the lower link are arranged in parallel in a horizontal direction and spaced apart in a vertical direction;
• a middle upright rod vertically connected between the upper link and the lower link;
• an upper supporting rod, a first end of the upper supporting rod being pivotally connected to the upper link;
• a lower supporting rod, a first end of the lower supporting rod being pivotally connected to the lower link;
• a foot frame arranged in a vertical direction, a top end of the foot frame being pivotally connected to a second end of the upper supporting rod, and a bottom end of the foot frame being pivotally connected to a second end of the lower supporting rod;
• and
• a first positioning member which selectively resists below the upper link, the first positioning member includes a slider and two linkage rods, the slider is slidably disposed on the middle upright rod, one end of the two linkage rods are pivotally connected to the slider, and the other end of the two linkage rods are pivotally connected to the lower supporting rods,
• wherein the first positioning member includes a slider and two linkage rods, the slider is slidably disposed on the middle upright rod, one end of the two linkage rods are pivotally connected to the slider, and the other end of the two linkage rods are pivotally connected to a first lower supporting rod and a second lower supporting rod, respectively,
• wherein the slider has a locating position in respect to the middle upright rod, when the slider is located at the locating position, the slider resists below the upper link, and when the slider moves away from the locating position, vertical movement of the slider brings the linkage rods to pivot, and
• wherein when the slider is located at the locating position, the slider is further locked and connected to the upper link.

A frame of a double-person baby carriage comprising an extended position and a folded position, wherein the frame of the double-person baby carriage further comprises:

• an upper link and a lower link, the upper link and the lower link are arranged in parallel in a horizontal direction and spaced apart in a vertical direction;
• a middle upright rod is vertically connected between the upper link and the lower link;
• an upper supporting rod, a first end of the upper supporting rod being pivotally connected to the upper link;
• a lower supporting rod, a first end of the lower supporting rod being pivotally connected to the lower link;
• a foot frame arranged in a vertical direction, a top end of the foot frame being pivotally connected to a second end of the upper supporting rod, and a bottom end of the foot frame being pivotally connected to a second end of the lower supporting rod;
• and
• a handle, wherein a head end of the handle extends into the lower supporting rod, a tail end of the handle is pivotally connected to the lower supporting rod, a sliding sleeve is sleeved on the handle and is slidably disposed on the handle, and the sliding sleeve is further pivotally connected to the upper supporting rod.

A frame of a double-person baby carriage comprising an extended position and a folded position, wherein the frame of the double-person baby carriage further comprising:

• an upper link and a lower link, the upper link and the lower link are arranged in parallel in a horizontal direction and spaced apart in a vertical direction;
• a middle upright rod is vertically connected between the upper link and the lower link;
• an upper supporting rod, a first end of the upper supporting rod being pivotally connected to the upper link;
• a lower supporting rod, a first end of the lower supporting rod being pivotally connected to the lower link;
• a foot frame arranged in a vertical direction, a top end of the foot frame being pivotally connected to a second end of the upper supporting rod, and a bottom end of the foot frame being pivotally connected to a second end of the lower supporting rod;
• and
• a handle and a handle adjustment mechanism for locking or unlocking a position of the handle,
• wherein the handle adjustment mechanism includes a first joint, a second joint, and a driving member, the first joint is pivotally connected to the second joint via a pivot, the second joint is axially movable in respect to the first joint to lock or unlock the first joint, the driving member is sleeved on the pivot and located between the first joint and the second joint, the driving member is rotatable in respect to the pivot, rotating of the driving member links the second joint to move in respect to the first joint, so as to lock or unlock the first joint, the first joint is fixedly connected to the upper supporting rod and/or the first connecting rod, and the second joint is fixedly connected to the handle.