Patent attributes
An indoor maintenance cover of a bus includes: a frame mounted on a maintenance hole; a first door and a second door in which respective both ends are connected to the frame by a hinge pin to open/close the maintenance hole; an interlocking device configured to join a hinge pin connected to one end of the first door and a hinge pin connected to one end of the second door, the interlocking device facing the hinge pin so that the first door and the second door rotate while interlocking with each other; and a fastener fastening the first door and the second door while the first door and the second door are closed. The maintenance cover can be installed to prevent accidents while increasing operability for easily opening or closing the maintenance hole in the bus.
