主权项 |
1. A shrinkable load supporter of a pushcart, said shrinkable load supporter comprising:
a front base and a rear base respectively provided with plural through holes and grooves corresponding to each other, a threaded hole located outside each said groove at a proper position; a telescopic pole set installed in said through holes of said front base and said rear base and including plural outer tubes and plural inner tubes correspondingly inserted in said outer tubes, each said inner tube having one end inserted through said through hole and fitted and positioned in said groove, each said outer tube having one end inserted through said through hole and fitted in said groove and another end bored with a positioning tube; and a pressing rod provided on said front base and said rear base respectively to press on said outer tubes and said inner tubes, said pressing rod provided with plural through holes corresponding to said threaded holes of said front base and said rear base so that screws can be inserted through said through holes of said pressing rods to threadably engage with said threaded holes to make said load supporter firmly assembled. |