Patent attributes
A retractable pipe structure may include an inner tube, an outer tube, two connectors and two locking rings. In one embodiment, the inner tube is cover by the outer tube and the connectors are disposed at both ends of the inner tube and connecting portions are inserted into both ends of the inner tube and the tightening unit is used to tighten and secure each end. When the inner tube along with the outer tube are connecting with the connecting portion of the connector and the tightening unit is disposed outside the outer tube, the restricting ring is disposed outside the outer tube and used to cover the connecting portion along with the locking ring. When a restricting ring is squeezed by the locking ring, an engaging unit is disposed outside the restricting ring to prevent the inner tube and outer tube from directly contacting with the engaging unit.
