Vacuum cleaner nozzle and vacuum apparatus

Abstract

The invention offers a vacuum cleaner nozzle and vacuum apparatus which can ensure air tightness and prevent vacuum mouth from tilting up. The vacuum cleaner nozzle offered is to be matched with air duct connecting portion of vacuum apparatus, which includes a connecting duct connected to air duct connecting portion; a nozzle main body, having exhaust port which corresponds to air duct connecting portion and is rotatably connected to the other end of connecting duct; a hollow accommodating part which is located in front of exhaust port as well as vacuum mouth which is provided on hollow accommodating part and directed toward surface to be cleaned; a flexible hose, locating between connecting duct and exhaust port with leak-proof fitting; a resilient component butted separately to connecting duct and nozzle main body, for keeping included angle between axis of connecting duct and support surface at predetermined angle.

1 . A vacuum cleaner nozzle, for working with an air duct connecting portion of a vacuum cleaner to clean dust on surfaces to be cleaned, comprising:
 a connecting duct, one end is for connecting to the air duct connecting portion;   a nozzle main body, comprising:
 an exhaust port which corresponds to the air duct connecting portion and is rotatably connected to the other end of the connecting duct; 
 a hollow accommodating part which is located in front of the exhaust port as well as a vacuum mouth which is provided on the hollow accommodating part and directed toward a surface to be cleaned, wherein the vacuum mouth comprises a support surface that is in contact with the surface to be cleaned; 
   a flexible hose, locates between the connecting duct and the exhaust port and intercocnnects both for leakproof;   a resilient component, which separately butts against the connecting duct and the nozzle main body for keeping included angle as predetermined between an axis of the connecting duct that leads to the air duct connecting portion and the support surface.   
     
     
         2 . The vacuum cleaner nozzle of  claim 1 , wherein the hollow accommodating part, the vacuum mouth and the exhaust port are integrally molded. 
     
     
         3 . The vacuum cleaner nozzle of  claim 1 , wherein the front bottom end of the connecting duct is equipped with an under shed, wherein a supporting mechanism is provided between the connecting duct and the vacuum mouth,
 wherein when the vacuum cleaner nozzle is in free state on a level surface, an edge of the under shed is butted to the supporting mechanism, an included angle between an axis of the connecting duct that leads to the air duct connecting portion and the surface to be cleaned is greater than zero,   wherein when the connecting duct turns toward direction that deviates from the supporting mechanism, the resilient component drives the supporting mechanism to rotate to the connecting duct.   
     
     
         4 . The vacuum cleaner nozzle of  claim 3 , wherein the resilient component is a torsion spring, comprising a primary torque arm which is installed on the connecting duct and synchronous rotation with the connecting duct, and a secondary torque arm which is butted to the nozzle main body. 
     
     
         5 . The vacuum cleaner nozzle of  claim 4 , wherein the hollow accommodating part comprises a hollow case and a mounting unit, and the mounting unit is fixed on the hollow case, comprising: a mounting ear, a mounting hole on the mounting ear, and a reset rib which is fixed in the mounting ear, and the reset rib is set on the opposite direction of outer surface of the hollow case, and in combination forming a clamp butting part that clamps the secondary torque arm and butted against the secondary torque arm, wherein the connecting duct comprises an erection column rotatably set in the mounting hole with a mounting groove in the erection column for installing the primary torque arm. 
     
     
         6 . The vacuum cleaner nozzle of  claim 4 , further comprising:
 a roller brush component, rotatably installed in the hollow accommodating part; and   a motor for driving the roller brush component to rotate.   
     
     
         7 . The vacuum cleaner nozzle of  claim 6 , wherein the nozzle main body further comprises a motor mounting portion which is set on a back side of the hollow accommodating part for accommodating and mounting the motor;
 wherein the vacuum mouth comprises: a dust inlet formed on the hollow accommodating part, and a front base plate and a rear base plate set at a perimeter of the dust inlet, wherein the motor mounting portion locates above the rear base plate.   
     
     
         8 . The vacuum cleaner nozzle of  claim 7 , wherein the motor mounting portion is used as the supporting mechanism, wherein a shape of the under shed corresponds to that of the motor mounting portion,
 wherein when an edge of the under shed contacts with the motor mounting portion, an elastic force exerted by the resilient component on the nozzle main body is the weakest.   
     
     
         9 . The vacuum cleaner nozzle of  claim 8 , wherein when the edge of the under shed contacts with the motor mounting portion, a predetermined angle is 15°-45°. 
     
     
         10 . A vacuum apparatus, for working with an air duct connecting portion of a vacuum cleaner to clean dust on surfaces to be cleaned, comprising:
 a connecting duct, one end is for connecting to the air duct connecting portion;   a nozzle main body, comprising an exhaust port which corresponds to the air duct connecting portion and is rotatably connected to another end of the connecting duct, a hollow accommodating part which is located in front of the exhaust port as well as a vacuum mouth which is provided on the hollow accommodating part and directed toward the surface to be cleaned, the vacuum mouth comprises a support surface that is in contact with the surface to be cleaned;   a flexible hose, locating between the connecting duct and the exhaust port and intercocnnecting both for a leakproof;   a resilient component, located between the connecting duct and the nozzle main body for preventing changing of an angle between an axis of the connecting duct that leads to the air duct connecting portion and the support surface.   
     
     
         11 . A vacuum apparatus, comprising:
 a vacuum cleaner main body comprises an air duct connecting portion; and   a vacuum cleaner nozzle according to  claim 1 , for matching with the air duct connecting portion.