Abstract: A swivel locking device for stroller wheel, comprising: a seat, a wheel bearing assembly, a locking pin, a biasing member, and an operating member. The seat and the wheel bearing assembly are coupled so as to rotate with respect to each other. The locking pin may move between a first position where the seat is coupled to suppress rotation between the seat and the wheel bearing assembly and a second position where the seat is decoupled to allow the rotation between the seat and the wheel bearing assembly. Normally, the biasing member biases the locking pin to the first position. The operating member moves between a locked position and a unlocked position. Movement of the operating member toward the locked position causes the locking pin to move toward the first position. The movement of operating member toward the unlocked position causes the locking pin to move toward the second position.

Abstract: A frame assembly for a double-seat baby stroller is provided. The frame assembly comprises: a first frame including a first main post, plural first bars, plural second bars, plural third bar, a central post and a first folding device pivotally connected to one another; and a second frame including a second main post, plural fourth bars, plural fifth bars, plural sixth bar, the central post and a second folding device pivotally connected to one another. The frame assembly is characterized by further comprising a linking mechanism connecting one of the bars of the first frame and one of the bars of the second frame, wherein when the second main post of the second frame and the central post become close to each other, the one of the bars of the first frame is driven to move via the linking mechanism by the one of the bars of the second frame, so that the first main post of the first frame and the central post become close to each other.

Abstract: A frame assembly for a double-seat baby stroller is provided. The frame assembly comprises: a first frame including a first main post, plural first bars, plural second bars, plural third bar, a central post and a first folding device pivotally connected to one another; and a second frame including a second main post, plural fourth bars, plural fifth bars, plural sixth bar, the central post and a second folding device pivotally connected to one another. The frame assembly is characterized by further comprising a linking mechanism connecting one of the bars of the first frame and one of the bars of the second frame, wherein when the second main post of the second frame and the central post become close to each other, the one of the bars of the first frame is driven to move via the linking mechanism by the one of the bars of the second frame, so that the first main post of the first frame and the central post become close to each other.

Abstract: A swivel locking device for stroller wheel, comprising: a seat, a wheel bearing assembly, a locking pin, a biasing member, and an operating member. The seat and the wheel bearing assembly are coupled so as to rotate with respect to each other. The locking pin may move between a first position where the seat is coupled to suppress rotation between the seat and the wheel bearing assembly and a second position where the seat is decoupled to allow the rotation between the seat and the wheel bearing assembly. Normally, the biasing member biases the locking pin to the first position. The operating member moves between a locked position and a unlocked position. Movement of the operating member toward the locked position causes the locking pin to move toward the first position. The movement of operating member toward the unlocked position causes the locking pin to move toward the second position.