Abstract: A playpen includes a frame, a cloth enclosure mounted on the frame and having a movement space, and a protective cushion mounted in the movement space of the cloth enclosure. The protective cushion includes at least one upper covering layer secured on the cloth enclosure, and a cushion body mounted between the at least one upper covering layer and the cloth enclosure. A receiving space is defined between the at least one upper covering layer and the cloth enclosure to receive the cushion body. Thus, when the baby is stepping and moving on the protective cushion, the at least one upper covering layer of the protective cushion will not slip on the cloth enclosure, thereby preventing the baby from falling down.

Abstract: A travel cot includes a frame unit, and two articulation units. The frame unit includes four corner blocks, four support legs, four elastic plates, two first connecting bars, and four second connecting bars. Each of the articulation units includes a positioning plate, a clamping plate, a movable plate, at least one positioning ball, at least one compression spring, a pivot shaft, and a hooked piece. Thus, the hooked piece of each of the articulation units is hooked on the clamping plate and the movable plate to limit the bending direction of the second connecting bars, so that the second connecting bars can only be pivoted upward and cannot be pivoted downward by limit of the hooked piece to prevent the second connecting bars from being bent downward and injuring the infant or baby.

Abstract: A block assembly includes at least two blocks detachably connected with each other. Each of the blocks includes a main body having a bottom provided with a receiving space, at least one connecting knob formed on a top of the main body, a plurality of positioning rails formed on a peripheral wall of the receiving space, and at least one positioning piece located in the receiving space. The positioning piece has a periphery provided with at least four arcuate positioning faces. Thus, when the connecting knob of the first one of the blocks is inserted between the positioning piece and the positioning rails of the second one of the blocks, one of the positioning faces of the positioning piece covers and presses the periphery of the connecting knob of the first one of the blocks.