Abstract: A collapsible stroller frame assembly which is selectively configurable in an unfolded configuration for carrying a child or infant, and a folded configuration for compact storage or transport in a vehicle, the frame assembly comprising: a front wheel frame with a front wheel assembly; a rear wheel frame with a rear wheel assembly; a lower hinge connecting the front wheel frame to the rear wheel frame in articulated manner, a seat frame hingedly connected to the lower hinge; an upper hinge connected to the seat frame at a position spaced from the lower hinge; a handle frame connected to the upper hinge, a manual release for user actuation; and a mechanical link between the upper and lower hinges; wherein the lower hinge is lockable to hold the seat frame, the front wheel frame and the rear wheel frame in the unfolded configuration, and unlockable to allow relative rotation of the seat frame, the front wheel frame and the rear wheel frame into the folded configuration; and the upper hinge is lockable to hold t

Abstract: A coupling device is provided with one end secured to the front end of a skate board and the other end secured to the rear axle of a baby carriage. The coupling device includes a coupler, a belt, a buckle article and a mounting block. The coupler is divided into two halves. Both ends of each half are provided with screwing holes. Two halves of the coupler are screwed to the rear axle of a baby carriage, the mounting block is screwed to the front end of a skate board, and one end of the belt is connected with the buckle article. After being penetrated through the buckle ring of the mounting block and encircling the center of the coupler, the other end of the belt is penetrated through the buckle article and fastened by the pressing piece of the buckle article.

Abstract: A coupling device is provided with one end secured to the front end of a skate board and the other end secured to the rear axle of a baby carriage. The coupling device includes a coupler, a belt, a buckle article and a mounting block. The coupler is divided into two halves. Both ends of each half are provided with screwing holes. Two halves of the coupler are screwed to the rear axle of a baby carriage, the mounting block is screwed to the front end of a skate board, and one end of the belt is connected with the buckle article. After being penetrated through the buckle ring of the mounting block and encircling the center of the coupler, the other end of the belt is penetrated through the buckle article and fastened by the pressing piece of the buckle article.

Abstract: A safety-control device of height adjustment for a baby walker includes two opposite planks, a main body and a pressing board. The main body is provided with a lateral opening in the front wall for receiving an elastic article and a stopping button. In the top of the main body is provided with an upper room for the elastic article and the stopping button and an operating block to be placed in. The lower section of the operating block is placed in the hollow of the stopping button, and a fixing pin is used to penetrate through the passing holes of the main body and the long hole of the operating block so as to make the operating block be pivotally assembled with the main body.

Abstract: A fixing safety-control device for a collapsible child walker is composed by a pressing article and an integral stopping board. On one reinforcing rib near the end of the sliding groove in the base member is provided with a crooked groove. The inserting strip provided on one end of the stopping board is inserted into the crooked groove to be fixed, and then the pressing article is penetrated through the sliding groove of the base member to let the front head be inserted into the hole of the stopping board so as to be in a fixed position. When the seat structure being collapsed, the sliding article of the connection structure will be stopped against the stopping surface of the stopping board and fixed so as to keep a safe distance from the base member to prevent a user's hands from being clamped. At last, the pressing article is pressed to let the stopping board separate from the sliding article, and by the elasticity of the hook, the child walker can be collapsed successfully and safely.

Abstract: A reverse-prevent structure for a baby walker includes several slide-preventing strips, a moving wheel and a reverse-preventing wheel. The characteristic of the present invention lies in the reverse-preventing wheel, which is composed by an inner tray and an outer casing. The inner tray is fixed and has an inwardly protrudent annulus. The annulus is provided with a angle-shaped hollow for a movable catch block to be placed in. The movable catch block is provided to interact with the ratchets encircling the inner wall of the outer casing. When the outer casing is rolling forward, the ratchets successively slide over the movable catch block, and the outer casing can advance smoothly. If the outer casing rolls in the reverse direction, one of the ratchets will be stopped by the movable catch block immediately, and the catch portion of the movable catch block will be caught in the notch between two ratchets.

Abstract: A collapsible infant bathtub in the present invention is made of a base, a headrest, a footrest and pressing devices. On each end of the headrest and footrest is respectively provided with a slider to receive each head end and foot end of the base. When being pulled outward along each skirt of the base, each slider will touch the slant surface of the button of each pressing device to force each button to shrink inside for each slider to pass on, and then each button will protrude outward the hole of each slider and stop each slider so as to prevent the headrest and footrest from being wholly pulled outward. On the bottom of each slider is provided with a catching member so as to stop against each stopping block of the base to firmly secure the headrest and footrest. After each button being pressed to shrink inward, each slider can be pushed inward along each skirt of the base to a secured position so as to collapse the infant bathtub for storage or carriage.