HOSE FOR VACUUM CLEANER HAVING TIGHT STRUCTURE OF CONNECTING PORTION

摘要

PURPOSE: A hose for a vacuum cleaner is provided to prevent the leakage of sucked air by tightly closing a connecting portion between the hose and a connecting pipe in simple structure. CONSTITUTION: A connecting ring(1) is inserted in a hose(3) and a protrusion(2) is engaged with a hanging hole(6) formed on a coupling end(4a) of a hose connecting pipe(4). A front end connecting portion(3a) of the hose is inserted in an insertion hole(4c) formed by a connecting end(4b) integrally molded in the coupling end(4a) of the connection pipe. A protruded tooth portion(5) is integrally formed on the outer face of the front end connecting portion to close the insertion hole. Upon coupling the hose with the connecting pipe, the protruded portion is adhered to the insertion hole without a gap between the insertion hole and the front end connecting portion. Accordingly, upon actuating the vacuum cleaner, the sucked air in the hose is not leaked so that sucking forced is secured. Further, the effect of sucking the air of the vacuum cleaner is improved.