Film Accommodating Cassette for Waste Disposal Apparatus

Abstract

A film accommodating cassette is detachably attached to a film attachment portion formed in an upper region of a waste disposal apparatus for accommodating a waste material, and includes only: a cylindrical tubular core that forms a waste inlet at its upper end; a lower flange that extends radially outward from a lower end of the tubular core; and an upper flange that extends radially outward from the upper end of the tubular core. The lower flange has a cassette-side latching portion that engages with the film attachment portion to couple the film accommodating cassette with the film attachment portion.

What is claimed is: 
     
         1 . A film accommodating cassette that is detachably attached to a film attachment portion formed in an upper region of a waste disposal apparatus for accommodating a waste material, comprising only:
 a cylindrical tubular core that forms a waste inlet at its upper end;   a lower flange that extends radially outward from a lower end of said tubular core; and   an upper flange that extends radially outward from said upper end of said tubular core, accommodates a film in a compressed state between said upper flange and said lower flange, and allows said film to be pulled out beyond an outer edge of said upper flange into said tubular core, wherein   said lower flange has a cassette-side latching portion that engages with said film attachment portion to couple said film accommodating cassette with said film attachment portion.   
     
     
         2 . The film accommodating cassette according to  claim 1 , wherein
 said cassette-side latching portion includes a protruding portion, which is part of said lower flange and protrudes radially outward.   
     
     
         3 . The film accommodating cassette according to  claim 1 , wherein
 said cassette-side latching portion includes a cutout that is recessed radially inward from an outer edge of said lower flange.   
     
     
         4 . The film accommodating cassette according to  claim 3 , wherein
 said protruding portion or said cutout is provided at a plurality of positions at regular intervals in a circumferential direction based on a central axis of said tubular core.   
     
     
         5 . The film accommodating cassette according to  claim 3 , wherein
 said cassette-side latching portion further includes an engagement rib formed on an upper surface of said lower flange so as to extend radially inward from said outer edge of said lower flange.   
     
     
         6 . The film accommodating cassette according to  claim 5 , wherein
 said engagement rib is formed by a first engagement rib positioned at an end located on one circumferential side of said cutout, and a second engagement rib positioned at a predetermined distance from said first engagement rib toward the other circumferential side.   
     
     
         7 . The film accommodating cassette according to  claim 5 , wherein
 said upper surface of said lower flange is provided with an annular rib and a plurality of radial ribs,   said annular rib is formed at a predetermined position radially inside said outer edge of said lower flange so as to extend continuously in said circumferential direction about said central axis, and connects to said engagement rib, and   said plurality of radial ribs extend radially from said tubular core to said annular rib.