| 主权项 |
1. A rack shelving unit comprising:
a front beam; a rear beam spaced rearward of the front beam; a tie bar extending between the front and rear beams to form a shelf frame with the front and rear beams, wherein the tie bar has an inverted U-shaped body comprising a first sidewall, a second sidewall, and a bight connecting the first and second sidewalls, wherein the first sidewall and second sidewall are flexible; compression retainers coupling the tie bar to the front and rear beams with a compressive force, the compression retainers having a protruding element provided on each of the first and second sidewalls and keyhole slots provided on each of the front and rear beams; and a shelf resting upon the front beam and the rear beam; wherein the tie bar has an unassembled state and an assembled state; wherein the tie bar is prevented from being fastened to the front and rear beams in the unassembled state and is configured to be coupled to the front and rear beams when the first and second sidewalls are compressed by enabling the protruding elements to be inserted within the respective keyhole slots; wherein the tie bar is prevented from being removed from the front and rear beams in the assembled state wherein the protruding elements can not be removed from the respective keyhole slots; and the tie bar is configured to be removed from the front and rear beams when the first and second sidewalls are compressed by enabling the protruding elements to be removed from the respective keyhole slots; and wherein in the assembled state, the first and second sidewall are configured to flex laterally away from each other as the shelf is loaded to increase the compression of the protruding elements and respective keyhole slots into each other and increase the compressive force of the compression retainers. |
