Controlling mechanism for activation of an air pump to be implemented in an inflatable object

摘要

A controlling mechanism for an inflatable object has a valve controlling assembly for opening/closing operation of the valve, a pressure controlling assembly for sensing pressure difference to selectively activate operation of the valve and a linkage assembly interactively arranged between the valve controlling assembly and the pressure controlling assembly to sense operation of the pressure controlling assembly and consequently operate movement of the valve controlling assembly.

主权项

1. A controlling mechanism for an inflatable object having an air pump selectively operable to deflate and inflate the inflatable object, the controlling mechanism comprising:
a valve controlling assembly comprising a valve shaft and a valve formed on a distal end thereof, the valve shaft movable between a first position in which the valve is closed so as to block fluid communication between the air pump and the inflatable object and a second position in which the valve is open so as to allow fluid communication between the air pump and the inflatable object; a pressure controlling assembly in fluid communication with the inflatable object and comprising a controlling shaft driven to move by air pressure in the inflatable object; and a linkage assembly arranged to lock the valve shaft into position when the valve shaft is driven into the second position; wherein the pressure controlling assembly is configured such that when air pressure inside the inflatable object reaches a predetermined high pressure and the valve shaft is locked into position by the linkage assembly, movement of the controlling shaft drives the linkage assembly to release the valve shaft.