Height-adjustable upright tube-cage unit

A height-adjustable upright tube-cage unit comprising:

• a telescopic cage which comprises an inner cage and an outer cage;
• and
• a telescopic upright tube which comprises an inner upright tube and
• an outer upright tube and is accommodated in the telescopic cage,
• wherein the inner cage, outer cage, inner upright tube, and outer upright tube can be connected to each other via a shared, telescopic scaffolding, wherein the scaffolding is adjustable between a first detent position and a second detent position,
• wherein, in the first detent position, the inner cage is latched with the outer cage and the inner upright tube is latched with the outer upright tube, and wherein the upright tube is longitudinally displaceable within the cage, and in which in the second detent position, an upper cage part is latched with an upper upright tube part, and a lower cage part is latched with a lower upright tube part.