Abstract: An engaging member is provided for engaging two cross rods consisting of a first rod and a second rod. The engaging member includes an inverted U-shaped section having two ends. Each end of the inverted U-shaped section extends in a direction transverse to a plane on which the inverted U-shaped section locates, thereby forming an upwardly facing receiving section through which the second rod is extended. The receiving sections are parallel to each other and respectively joined with a first inclined section and a second inclined section. The first inclined section has a distal end extending across the second inclined section, thereby forming a first inverted U-shaped retaining section that is located above the first inclined section and the second inclined section. The second inclined section has a distal end extending across the first inclined section and, thereby forming a second inverted U-shaped retaining section that is located above the first inclined section and the second inclined section.