| 摘要 |
PURPOSE: A multipurpose supporting pipe with an improved structure is provided to facilitate the adjustment of the pipe without using an adjustment device and thus, to simplify an outer structure of the supporting pipe. CONSTITUTION: The multipurpose supporting pipe(1) includes an outer pipe(10) with a greater diameter and an inner pipe(20). The outer pipe(10) is composed of an introrse fastening protrusion(11) whose thickness increases gradually at a certain angle in the inward direction, and the inner pipe(20) includes an extrorse fastening protrusion(21) whose thickness increases gradually at a certain angle in the outward direction. The inner pipe(20) is inserted into the outer pipe(10) in such a manner that the extrorse fastening protrusion(21) of the inner pipe(20) goes to the opposite or other direction of the introrse fastening protrusion(11) of the outer pipe(10). By rotating one pipe while holding the other pipe, the extrorse fastening protrusion(21) and the introrse fastening protrusion(11) get interlocked with each other.
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