Cap of a garbage can

Abstract

A cap of a garbage can includes a cap body, a shutter device, a shutter base and a press device. The shutter device is controlled by the press device to open or close. When the press device is pressed down, the shutter members are actuated to retreat to one side or expand out to open or close the opening of the cap body, easy to be operated and impossible to make noises.

1 . A cap of a garbage can comprising: 
 a cap body having a center hole, an annular accommodating chamber formed in its underside, said accommodating chamber provided therein with a plurality of positioning posts spaced apart equidistantly, said cap body having one outer side provided with a fit protruding member;    a shutter device fixed in said accommodating chamber of said cap body, said shutter device composed of a plurality of arc-shaped shutter members and a rotary ring, said rotary ring having an insert member formed to extend down from a certain location of the outer circumference, said insert member provided thereon with two slidable position posts spaced apart;    a shutter base assembled at the lower side of said shutter device, said shutter base having its circumferential inner side formed with an annular accommodating groove, said shutter base further having protruding-out combining base on an outer surface;    a press device fitted on said combining base of said shutter base, said press device composed of a main body, a press plate, a swing-and-press member and two control blocks, said swing-and-press member positioned on said two control blocks, said two control blocks respectively fitted with said two slidable position posts of said rotary ring of said shutter blade device;    said opening of said cap body able to be opened or closed by pressing said press plate of said press device manually, with said shutter members retreated to one side or expanded out for opening closing said opening of said cap body, without necessity of lifting or removing said cap body manually.    
   
   
       2 . A cap of a garbage can comprising: 
 a cap body having a center opening in its center and an annular accommodating chamber formed in its underside, said accommodating chamber provided therein with a plurality of positioning lugs, said cap body having a fit protruding member formed on an outer surface;    a shutter base fitted under a shutter device, said base bored with an annular accommodating groove, said shutter base having a protruding-out combining base on an outer surface; and,    characterized by said shutter device and a press device positioned between said cap body and said shutter base, said press device provided with a swing-and-press member and two control blocks, said swing-and-press member and said two control blocks controlling said shutter device to open or close;    said center opening of said cap body closed and opened by retreating and expanding of plural shutter members of said shutter device effected by said press device without necessity of lifting or removing said cap body manually.    
   
   
       3 . The upper cover of a garbage can as claimed in claims  1  and  2 , wherein two slidable position posts of said insert member of said shutter device are respectively inserted in two oblique slide grooves of said control blocks of said press device so that said rotary ring of said shutter device can be controlled to rotate leftward or rightward and actuate said arc-shaped shutter members to retreat to one side or expand out for opening or closing said center opening of said cap body.