A stroller includes a texture carrier, a wheel set and a vehicle frame. The wheel set includes a front wheel and a rear wheel. The vehicle frame includes a first tube, a second tube, a third tube, a fourth tube and a first pivot unit. The front wheel is disposed on the first tube. The rear wheel is disposed on the second tube. The third tube includes a front section and a rear section connected to each other. The fourth tube is pivoted between the first tube and the second tube. The first pivot unit is disposed between the second tube and the fourth tube. The first pivot unit switched into an unfolded mode can stabilize the first tube and the fourth tube at the same direction. The pivot unit switched into a folded mode can rotate the fourth tube relative to the first tube and the second tube.

A stroller includes a texture carrier, a wheel set and a vehicle frame. The wheel set includes a front wheel and a rear wheel. The vehicle frame includes a first tube, a second tube, a third tube, a fourth tube and a first pivot unit. The front wheel is disposed on the first tube. The rear wheel is disposed on the second tube. The third tube includes a front section and a rear section connected to each other. The fourth tube is pivoted between the first tube and the second tube. The first pivot unit is disposed between the second tube and the fourth tube. The first pivot unit switched into an unfolded mode can stabilize the first tube and the fourth tube at the same direction. The pivot unit switched into a folded mode can rotate the fourth tube relative to the first tube and the second tube.

A baby carriage includes a handle, a first fixing member, a second fixing member, a rear leg, a front leg, an unlock member, a first lock member, a rotating member and a pulling member. The first lock member engages with the first fixing member and the second fixing member to lock the handle, the rear leg and the front leg at a first unfolded position. When the unlock member pulls the pulling member, the pulling member drives the rotating member to rotate, a first inclined driving surface of the first fixing member pushes the rotating member toward the first lock member, and the rotating member pushes the first lock member toward the second fixing member to disengage the first lock member from the first fixing member.

A baby carriage includes a handle, a first fixing member, a second fixing member, a rear leg, a front leg, an unlock member, a first lock member, a rotating member and a pulling member. The first lock member engages with the first fixing member and the second fixing member to lock the handle, the rear leg and the front leg at a first unfolded position. When the unlock member pulls the pulling member, the pulling member drives the rotating member to rotate, a first inclined driving surface of the first fixing member pushes the rotating member toward the first lock member, and the rotating member pushes the first lock member toward the second fixing member to disengage the first lock member from the first fixing member.

A child carrier is provided and includes a frame, a seat and a folding device installed between the frame and the seat. The frame includes a handle, a front leg pivotally connected to the handle and a rear leg pivoted to the handle. The folding device includes a sliding structure and a linking component. The sliding structure is fixedly disposed on the handle. The seat is slidably coupled to the sliding structure. The linking component includes a first end and a second end. The first end is pivotally coupled to the seat. The second end is pivotally connected to the rear leg. The linking component is driven to drive the seat to slide along the handle when the handle pivots relative to the rear leg.

A child carrier is provided and includes a frame, a seat and a folding device installed between the frame and the seat. The frame includes a handle, a front leg pivotally connected to the handle and a rear leg pivoted to the handle. The folding device includes a sliding structure and a linking component. The sliding structure is fixedly disposed on the handle. The seat is slidably coupled to the sliding structure. The linking component includes a first end and a second end. The first end is pivotally coupled to the seat. The second end is pivotally connected to the rear leg. The linking component is driven to drive the seat to slide along the handle when the handle pivots relative to the rear leg.

A foldable car seat carriage includes a frame unit and an engagement unit. The frame unit includes two leg frames. Each of the leg frames includes two legs pivotable relative to each other, and a driving mechanism. The driving mechanism has opposite ends connected pivotally to the legs at first and second intersections. The engagement unit includes two bayonets. Each of the bayonets has a linking portion connected pivotally to the driving mechanism of a respective one of the leg frames. For each of the leg frames, change of a distance between the first and second intersections of the driving mechanism and the legs during pivot action of the legs converts a position of the engagement unit relative to the legs.

A foldable locking mechanism (300,500) adapted for a frame body (400) includes a first mounting seat (1), a second mounting seat (2), a third mounting seat (4), a first locking component (3) and a driving component (1a,2a). The second mounting seat (2) is pivotally connected to the first mounting seat (1) and the third mounting seat (4). The first locking component (3) is at least partially disposed between the second mounting seat (2) and the third mounting seat (4) and movable between a first releasing position and a first locking position for allowing or restraining a relative pivotal movement of the second mounting seat (2) and the third mounting seat (4). The driving component (1a,2a) is disposed on the first mounting seat (1) and abuts against the first locking component (3). The driving component (1a,2a) is configured to drive the first locking component (3) to move to the first releasing position to allow a folding operation of the foldable locking mechanism (300,500) for allowing a folding operation of the frame body (400).

A foldable locking mechanism (300,500) adapted for a frame body (400) includes a first mounting seat (1), a second mounting seat (2), a third mounting seat (4), a first locking component (3) and a driving component (1a,2a). The second mounting seat (2) is pivotally connected to the first mounting seat (1) and the third mounting seat (4). The first locking component (3) is at least partially disposed between the second mounting seat (2) and the third mounting seat (4) and movable between a first releasing position and a first locking position for allowing or restraining a relative pivotal movement of the second mounting seat (2) and the third mounting seat (4). The driving component (1a,2a) is disposed on the first mounting seat (1) and abuts against the first locking component (3). The driving component (1a,2a) is configured to drive the first locking component (3) to move to the first releasing position to allow a folding operation of the foldable locking mechanism (300,500) for allowing a folding operation of the frame body (400).

A pram may be used to transport babies and relatively young infants, and may provide a relatively horizontal surface for the baby or infant to be transported upon in a flat lying position. A pram may also be used to transport relatively older infants, and may provide a seat arrangement for the infant to be transported in a sitting position. However, babies and infants grow quickly and may outgrow conventional prams within a year or two years. Therefore, a parent or guardian must typically provide several prams for their child. Furthermore, a pram offering optimal comfort or safety may not be convenient when travelling or for city living. An aspect of the present disclosure includes a child transportation system comprising a frame 100, wherein the frame 100 is width adjustable between a relatively narrow compact arrangement and a relatively wide comfort arrangement. The frame 100 also includes an infant carrier attachment mechanism 500 configured and arranged to permit, in use, a seat 200 or an infant carrier module 300 to be releasably attached to the frame 100.