Patent attributes
A shelf structure may comprise four vertical posts, a plurality of spacers, a plurality of connecting tubes and at least two shelf boards. Each of the vertical posts has a plurality of peripheral grooves separated with the same interval and sequentially formed on a surface thereof, and each of spacers comprises two arc pieces which are configured to fit together to secure the spacer on the vertical post. When an additional shelf board is needed, a user can directly mount the spacers and connecting tubes respectively on the four vertical posts to enable the additional shelf board to be assembled between the vertical posts, thereby achieving the quick-assembly effect. Moreover, the connecting tube has two engaging slots which enables an additional shelf board to be directly assembled and extended from a side of the shelf when cooperating with additional vertical posts.
