| 摘要 |
A modular tube assembly includes first and second upright tubes (21, 22) and at least one connecting rod unit (40). The at least one connecting rod unit (40) includes a connecting rod (4) and at least one spring-loaded pin (5). The connecting rod (4) interconnects the first and second upright tubes (21, 22), and has a first end corresponding in position to at least one engaging hole (211) of the first upright tube (21), and a second end corresponding in position to at least one engaging hole (221) of the second upright tube (22). The at least one spring-loaded pin (5) has a securing portion (51) secured to one of the first and second ends of the connecting rod (4), and a movable portion (52) movable resiliently relative to the securing portion (51) and engaging removably the at least one engaging hole (211, 221) of a respective one of the first and second upright tubes (21, 22).
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