Abstract: A structure for connecting a handle to the push rods of a baby carriage is located between the push rods of a pair of push rods (1) and the handle for allowing the widening and narrowing of the distance between the push rods (1) in response to opening or closing the baby carriage. The distance between the push rods (1) in the open state, is firmly maintained in that the connecting sections between the push rods (1) and the push rod-connecting rod (2) are locked. This locking of each connecting section is achieved when a locking sleeve (10) is displaced downwardly by the force of a spring (15), whereas it is canceled when the locking sleeve (10) is displaced upwardly against the force of the spring (15).

Abstract: A self-locking hinge is disclosed for pivotally attaching a door to a frame member. The hinge includes first and second hinge members which are pivotally joined together by a pin. A socket is formed in the first hinge member which is designed to receive a detent mechanism. The detent mechanism has at least one tooth formed on its lower surface which will engage a complimentary notch formed on the upper surface of the second hinge member upon rotation of the first hinge member relative to the second hinge member. The tooth and notch are so configured as to permit rotation of the first hinge member in one direction but will prevent its rotation in an opposite direction once the tooth has engaged the notch. A spring is positioned located within the socket of the first hinge member so as to bias the detent downward towards the second hinge member.