Cleaning apparatus with wheel adjusting mechanism

Abstract

A cleaning apparatus includes a top cover and a seat that together form a main body of the apparatus, and a wheel adjusting mechanism mounted between the top cover and the seat. The wheel adjusting mechanism includes a lifting gear, a braking gear, and a pair of wheels connected to two ends of an axle. When the lifting gear is downward pushed to press against the axle and a catch provided on the lifting gear is engaged with a hooking portion on the braking gear, the cleaning apparatus is lifted by a predetermined distance. When the braking gear is forward pushed and the hooking portion is disengaged from the catch on the lifting gear, the cleaning apparatus is lowered to an initial position thereof.

What is claimed is:  
     
         1 . A cleaning apparatus with wheel adjusting mechanism, said wheel adjusting mechanism comprising: 
 a lifting gear having a catch provided therewith;    a braking gear having a hooking portion provided therewith for engaging with said catch on said lifting gear, and an elastic element disposed thereon; and    a pair of wheels connected to two ends of an axle;    whereby when said lifting gear is downward pushed to press against said axle with said catch engaged with said hooking portion on said braking gear, said cleaning apparatus is lifted by a predetermined distance from a ground surface to be cleaned; and when said braking gear is forward pushed to disengage said hooking portion from said catch on said lifting gear, said cleaning apparatus is lowered to an initial position thereof.    
     
     
         2 . The cleaning apparatus with wheel adjusting mechanism as claimed in  claim 1 , wherein said lifting gear includes a lifter and a pair of lifter supports, said lifter being provided at an end with a control arm, said lifter supports being fixedly mounted on said cleaning apparatus at predetermined positions, and said lifter being pivotally connected to said lifter supports.  
     
     
         3 . The cleaning apparatus with wheel adjusting mechanism as claimed in  claim 2 , wherein said control arm is provided at a free end with an end cap.  
     
     
         4 . The cleaning apparatus with wheel adjusting mechanism as claimed in  claim 1 , wherein said braking gear includes a lifter switch and a sliding guide, and said sliding guide being provided with a sliding channel for said lifter switch to slide therein.  
     
     
         5 . The cleaning apparatus with wheel adjusting mechanism as claimed in  claim 1 , wherein said cleaning apparatus is provided at a bottom with front wheels.