Patent attributes
A coupling device includes a coupling seat unit connected pivotally to pivot portions of two rod members of a foldable frame such that an engaging end portion of each rod member extends into an accommodating space of the coupling seat unit when the rod members are aligned with each other in an extended position. A spring-loaded latch unit is mounted movably in the accommodating space and is operable from an engaging position for retaining the rod members in the extended position to a releasing position for permitting movement of the rod members to a folded position. An actuating member has a connecting portion extending into the accommodating space and mounted movably on the coupling seat unit, and an actuating portion operably externally of the accommodating space for moving the actuating portion so as to drive the latch unit to move from the engaging position to the releasing position.
