Shelf structure

Abstract

A shelf structure may include 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 enable an additional shelf board to be directly assembled and extended from a side of the shelf when cooperating with additional vertical posts.

1 . A shelf structure comprising:
 four vertical posts; each of the vertical posts having a plurality of peripheral grooves separated with the same interval and sequentially formed on a surface thereof;   a plurality of spacers; each of the spacers comprising two arc pieces which are configured to fit together to secure the spacer on the vertical post, and an inner surface of the arc piece having a rib which is adapted to be received in and engaged with the peripheral groove;   a plurality of connecting tubes; each of the connecting tubes, which is configured to couple around an outer periphery of the spacer, having two engaging slots at two corresponding sides thereof; and   at least two shelf boards; each shelf board secured by at least two arc panels which are evenly located at two parallel edges thereof and enable the shelf board to be horizontally positioned between the four vertical posts, wherein the two arc panels on one edge of the shelf board are located at positions corresponding to the two arc panels at another edge thereof; each of the arc panels comprising two engaging notches upwardly formed from a bottom edge thereof, and an engaging member, which is formed between the two engaging notches, configured to engage with the engaging slot of the connecting tube,   wherein an upper portion of the arc panel comprises a plurality of substantially triangular engaging points which are configured to couple with an outer surface of the connecting tube to tightly assemble the arc panel with the connecting tube.   
     
     
         2 . The shelf structure of  claim 1 , wherein the spacers and the connecting tubes are formed in a tapered-drum shape.