Patent attributes
A storage shelf coupling sleeves each having symmetrically arranged engagement slots formed thereon to be convergent, through sloping, in a downward direction. The coupling sleeves are respectively mounted to fixed rods. A support frame has retention plates respectively fit to the coupling sleeves by being received in one of the engagement slots of each coupling sleeve. Another engagement slot of each of the coupling sleeves may receive a retention plate of another support frame to fit therein so that a number of support frames can be connected in a side-by-side manner thereby making assembly and expansion of the storage shelf easy and the expanded arrangement tidy and organized. The coupling sleeve is of a hollow cylindrical configuration. The support frame has corners each comprising one retention plate attached thereto. The retention plate is made convergent, through sloping, in the downward direction to facilitate fitting thereof into the coupling sleeve.
