Baby stroller and lateral seat cover portion thereof

A lateral seat cover portion of a baby stroller, comprising:

• a fabric bag comprising an inner side fabric and an outer side fabric opposite to each other;
• a foldable plate wrapped in the fabric bag and located between the inner side fabric and the outer side fabric, wherein the foldable plate comprises a first plate and a second plate pivotally connected to the first plate, and when a frame of the baby stroller in an unfolded state, the foldable plate is in an unfolded state;
• and
• an auxiliary device, wherein when the frame of the baby stroller is folded, the auxiliary device enables an outer side of the first plate and an outer side of the second plate to approach each other, thereby switching the foldable plate from the unfolded state to a folded state,
• wherein the auxiliary device comprises an elastic member, a first end of the elastic member is connected to the outer side of the first plate, and a second end of the elastic member is connected to the outer side of the second plate.

A lateral seat cover portion of a baby stroller, comprising:

• a fabric bag comprising an inner side fabric and an outer side fabric opposite to each other;
• a foldable plate wrapped in the fabric bag and located between the inner side fabric and the outer side fabric, wherein the foldable plate comprises a first plate and a second plate pivotally connected to the first plate, and when a frame of the baby stroller in an unfolded state, the foldable plate is in an unfolded state;
• an auxiliary device, wherein when the frame of the baby stroller is folded, the auxiliary device enables an outer side of the first plate and an outer side of the second plate to approach each other, thereby switching the foldable plate from the unfolded state to a folded state;
• and
• a pivot shaft, wherein the first plate and the second plate are connected through the pivot shaft, the auxiliary device comprises a torsion spring sleeved on the pivot shaft, and two spring arms of the torsion spring are connected to the first plate and the second plate, respectively.