A baby crib, comprising: - an upper frame, which is configured to support an enclosure for receiving a baby, the upper frame comprising two half-parts that are pivotally articulated to each other at two junction devices, each junction device of the upper frame comprising a first lock mechanism, which is configured to prevent the half-parts of the upper frame from pivoting relative to each other, - two support structures, which are configured to hold the upper frame raised relative to a bearing surface, each support structure being pivotally articulated to a respective half-part of the upper frame, - a release actuator for each junction device, wherein: - the crib is adapted to switch between an open configuration in which the support structures are spaced apart and a closed configuration in which the support structures are close together, - the half-parts of the upper frame are configured to pivot relative and toward each other and to pivot toward their respective support structures during transition from the open configuration to the closed configuration, - the distance between said junction devices remains substantially constant during the transition from the open configuration to the closed configuration, - the release actuators of the junction devices are operable to release the first lock mechanism and allow transition to the closed configuration, - each half-part of the upper frame comprises a second lock mechanism which is configured to prevent the half-part from pivoting relative to its respective support structure, characterized in that - the release actuators of the junction devices are configured to simultaneously release the first lock mechanisms and the second lock mechanisms and thereby allow transition to the closed configuration. - an upper frame, which is configured to support an enclosure for receiving a baby, the upper frame comprising two half-parts that are pivotally articulated to each other at two junction devices, each junction device of the upper frame comprising a first lock mechanism, which is configured to prevent the half-parts of the upper frame from pivoting relative to each other, - two support structures, which are configured to hold the upper frame raised relative to a bearing surface, each support structure being pivotally articulated to a respective half-part of the upper frame, - a release actuator for each junction device, - the crib is adapted to switch between an open configuration in which the support structures are spaced apart and a closed configuration in which the support structures are close together, - the half-parts of the upper frame are configured to pivot relative and toward each other and to pivot toward their respective support structures during transition from the open configuration to the closed configuration, - the distance between said junction devices remains substantially constant during the transition from the open configuration to the closed configuration, - the release actuators of the junction devices are operable to release the first lock mechanism and allow transition to the closed configuration, - each half-part of the upper frame comprises a second lock mechanism which is configured to prevent the half-part from pivoting relative to its respective support structure, characterized in that - the release actuators of the junction devices are configured to simultaneously release the first lock mechanisms and the second lock mechanisms and thereby allow transition to the closed configuration.