Hidden supporting wall type half-surrounded sleeping berth for railway vehicle

The hidden supporting wall type semi-surrounding sleeping berth for the railway vehicle comprises a berth cushion, an upper mask, a sleeping berth framework, an armrest outer frame, an armrest framework, an installation corner connector, a lower mask and a buckling cover, the sleeping berth framework is of an integrated welding structure and is of a ship-shaped structure, one face of the sleeping berth framework is open, the other three faces of the sleeping berth framework are provided with vertical surrounding plates, and the vertical surrounding plates are connected with the lower mask. Compared with the prior art, the sleeping berth framework has the advantages that sound insulation and noise reduction can be conducted on the head position of a passenger through the vertical coaming and the upper mask and the lower mask which are bonded, and the temperature difference of the body contact portion of the passenger is reduced; according to the bed board structure, six connecting holes are formed in a vertica