Nozzle for cleaner

Abstract

A nozzle of a cleaner includes a nozzle housing having a first flow path extending in a left-right direction of the nozzle and a second flow path extending in a front-rear direction of the nozzle; first and second rotation cleaning units disposed behind the first flow path and spaced apart from each other in the left-right direction, the second flow path being positioned between the first and second rotation cleaning units, first and second driving motors disposed on opposing sides with respect to a centerline of the second flow path to rotate the first and second rotation cleaning units; mops attached to each of the first and second rotation cleaning units and an axis of the first driving motor and an axis of the second driving motor extend in a non-parallel angle with respect to the centerline of the second flow path.

What is claimed is: 
     
         1 . A nozzle for a cleaner, the nozzle comprising:
 a nozzle housing having a first flow path extending in a left-right direction of the nozzle and a second flow path extending in a front-rear direction of the nozzle;   a first rotation cleaning unit and a second rotation cleaning unit disposed on a lower surface of the nozzle housing behind the first flow path, the first rotation cleaning unit being spaced apart from the second rotation cleaning unit in the left-right direction, the second flow path being positioned between the first rotation cleaning unit and the second rotation cleaning unit;   a first driving motor disposed on a first side of the second flow path with respect to a centerline of the second flow path, the first driving motor being configured to rotate the first rotation cleaning unit;   a second driving motor disposed on a second side of the second flow path with respect to the centerline of the second flow path, the second driving motor being configured to rotate the second rotation cleaning unit, the second side being opposite to the first side; and   a first mop attached to the first rotation cleaning unit and a second mop attached to the second rotation cleaning unit to be rotated, each of the first mop and the second mop being configured to be rotated by a respective one of the first driving motor and the second driving motor,   wherein an axis of rotation of the first driving motor and an axis of rotation of the second driving motor extend at a non-parallel angle with respect to the centerline of the second flow path.   
     
     
         2 . The nozzle of  claim 1 , wherein the first flow path and the second flow path include openings provided in the lower surface of the nozzle housing,
 wherein the second flow path extends in a rearward direction from a center area of the first flow path, and   wherein the centerline of the second flow path intersects a centerline of the first flow path.   
     
     
         3 . The nozzle of  claim 1 , wherein the centerline of the second flow path is disposed between a first rotation center of the first rotation cleaning unit and a second rotation center of the second rotation cleaning unit. 
     
     
         4 . The nozzle of  claim 3 , wherein the nozzle housing includes:
 a first driving unit cover covering the first driving motor, the first driving unit cover having a center disposed between the axis of rotation of the first driving motor and the rotation center of the first rotation cleaning unit; and   a second driving unit cover covering the second driving motor, the second driving unit cover including a center disposed between the axis of rotation of the second driving motor and the rotation center of the second rotation cleaning unit.   
     
     
         5 . The nozzle of  claim 4 , wherein the axis of rotation of the first driving motor and the axis of rotation of the second driving motor are symmetrical with respect to the centerline of the second flow path. 
     
     
         6 . The nozzle of  claim 1 , wherein the axis of rotation of the first driving motor and the axis of rotation of the second driving motor are angled towards the centerline of the second flow path as viewed moving in a frontward direction, and
 wherein the second flow path extends from the first flow path in a rearward direction, the rearward direction being opposite to the frontward direction.   
     
     
         7 . The nozzle of  claim 1 , wherein a width of the second flow path is smaller than a distance between the first driving motor and the second driving motor. 
     
     
         8 . The nozzle of  claim 1 , wherein the nozzle housing includes:
 a nozzle base on which the first driving motor and the second driving motor are seated; and   a nozzle cover coupled to an upper side of the nozzle base, the nozzle cover covering the first driving motor and the second driving motor.   
     
     
         9 . The nozzle of  claim 8 , wherein the first driving motor includes a first transmission shaft passing through the nozzle base, the first transmission shaft being connected to the first rotation cleaning unit, and
 wherein the second driving motor includes a second transmission shaft passing through the nozzle base, the second transmission shaft being connected to the second rotation cleaning unit.   
     
     
         10 . The nozzle of  claim 1 , further comprising a water tank mounted on an upper portion of the nozzle housing,
 wherein the water tank is symmetrically disposed with respect to the centerline of the second flow path, and   wherein the water tank is configured to supply water to the first mop and to the second mop.   
     
     
         11 . A nozzle for a cleaner, the nozzle comprising:
 a nozzle housing having a first flow path extending in a left-right direction of the nozzle and a second flow path extending in a front-rear direction of the nozzle from the first flow path;   a first rotation plate and a second rotation plate disposed behind the first flow path and below the nozzle housing, the first rotation plate and the second rotation plate being spaced apart from each other in the left-right direction with respect to the second flow path;   a first driving motor disposed on a first side of the second flow path to rotate the first rotation plate; and   a second driving motor disposed on a second side of the second flow path to rotate the second rotation plate, the second side being opposite to the first side,   wherein the first driving motor and the second driving motor are disposed on opposing sides of the second flow path,   wherein an axis of rotation of the first driving motor and an axis of rotation of the second driving motor are disposed in a first direction, and   wherein a rotation axis of the first rotation plate and a rotation axis of the second rotation plate are disposed in a second direction different from the first direction.   
     
     
         12 . The nozzle of  claim 11 , wherein the nozzle housing includes:
 a nozzle base through which the rotation axis of the first rotation plate and the rotation axis of the second rotation plate pass; and   a nozzle cover coupled to an upper portion of the nozzle base to cover the first driving motor and the second driving motor.   
     
     
         13 . The nozzle of  claim 12 , wherein the first driving motor and the second driving motor are seated on the nozzle base and are spaced apart from each other in the left-right direction, and
 wherein an imaginary line connecting the axis of rotation of the first driving motor and the axis of rotation of the second driving motor overlaps the second flow path in the front-rear direction.   
     
     
         14 . The nozzle of  claim 11 , further comprising a water tank symmetrically disposed with respect to a centerline of the second flow path,
 wherein the water tank is configured to supply water to the first rotation plate and the second rotation plate, and   wherein each of the first rotation plate and the second rotation plate include a mop for wiping a floor and for receiving water from the water tank via the first rotation plate and the second rotation plate, respectively.   
     
     
         15 . The nozzle of  claim 11 , wherein the axis of rotation of the first driving motor and the axis of rotation of the second driving motor are symmetrically disposed with respect to the second flow path. 
     
     
         16 . The nozzle of  claim 15 , wherein the axis of rotation of the first driving motor and the axis of rotation of the second driving motor extend at a non-parallel angle with respect to the centerline of the second flow path to intersect with a centerline of the second flow path. 
     
     
         17 . The nozzle of  claim 11 , wherein the first driving motor overlaps at least a portion of the first rotation plate in a vertical direction,
 wherein the second driving motor overlaps at least a portion of the second rotation plate in the vertical direction, and   wherein the first rotation plate and the second rotation plate are symmetrically disposed with respect to the second flow path.   
     
     
         18 . The nozzle of  claim 17 , wherein the first direction is perpendicular to the second direction. 
     
     
         19 . The nozzle of  claim 18 , wherein the first direction is defined as the front-rear direction of the nozzle housing, and
 wherein the second direction is defined as a vertical direction of the nozzle housing.   
     
     
         20 . The nozzle of  claim 19 , wherein at least a portion of the first driving motor overlaps the first rotation plate in the vertical direction,
 wherein at least a portion of the second driving motor overlaps the second rotation plate in the vertical direction, and   wherein the first driving motor and the second driving motor are positioned behind the first flow path.   
     
     
         21 . The nozzle of  claim 11 , wherein the nozzle housing further includes a flow path forming portion covering at least one of the first flow path and the second flow path, the flow path forming portion partitioning a space in which the first driving motor and the second driving motor are positioned and a flow path space in which air flows. 
     
     
         22 . The nozzle of  claim 21 , wherein the second flow path extends in a rearward direction from a central area of the first flow path, and
 wherein the flow path forming portion extends along the second flow path.   
     
     
         23 . The nozzle of  claim 11 , further comprising:
 a first transmission gear disposed in an area between the axis of rotation of the first driving motor and the rotation axis of the first rotation plate, the first transmission gear being configured to transmit power of the first driving motor to the first rotation plate; and   a second transmission gear disposed in an area between the axis of rotation of the second driving motor and the rotation axis of the second rotation plate, the second transmission gear being configured to transmit power of the second driving motor to the second rotation plate.