Back delivery system and vehicle seat

The utility model relates to a back delivery system and vehicle seat. The utility model provides a breech lock can release that is used for the back delivery system of seat, but the seat has seat bottom pivot back and be used for making the back to lock bottom the seat. this system includes that the mountable arrives the bearing structure's of back first portion. The first portion includes the bracket and keeps the ware, keeps ware attachable to bracket for but keep the ware for the bracket pivot. In addition, keep ware joinable to breech lock. This system still includes the second portion, and this second portion is including lid and handle, and the lid mountable is on the backplate of back, and the handle is constructed into pivot ground and is attached to receive and cover. The second portion is constructed to attach before fixing a position the backplate on back bearing structure and is connect to the backplate to the second portion can be aimed at with the first portion, makes thehandle attachable to kee