Automatically extensible telescopic apparatus

摘要

An automatically extensible telescopic apparatus includes a first tube inserted in a second tube. A positioning unit includes a ferrule, two fins, a shaft, a toothed wheel and a first detent. The ferrule is provided on the second tube. The fins extend from the ferrule. The shaft is supported on the fins. The toothed wheel is supported on the shaft and includes teeth for insertion in recesses defined in the first tube. The first detent is supported on the fins for engagement with the toothed wheel. A handle includes two blades and a second detent. The blades are placed between the fins and supported on the shaft. The second detent is supported on the blades for engagement with the toothed wheel. An elastic element compressed between the first and second tubes for extending the first tube from the second tube.

主权项

1. An automatically extensible telescopic apparatus including:
a first tube including recesses defined therein, a slender section, a wide section and a transient section extending from the slender section to the wide section; a second tube for containing the first tube, wherein the second tube includes a slender section, a wide section and a transient section extending from the thin section to the wide section thereof, wherein the transient section of the first tube can be placed against the transient section of the second tube to keep the first tube partially in the second tube; a positioning unit including:
a ferrule provided on the second tube;two fins formed on the ferrule;a shaft rotationally supported on the fins and formed with an axis;a toothed wheel supported on the shaft and formed with teeth for insertion in the recesses; anda first detent movably supported on the fins for engagement with the toothed wheel; a handle including:
two blades placed between the fins and supported on the shaft; anda second detent movably supported on the blades for engagement with the toothed wheel; and an elastic element compressed between a portion of the first tube and a portion of the second tube for extending the first tube from the second tube.