Cleaning machine

Abstract

A cleaning machine may include: a first brush including a first brush shaft and a first brush body held by the first brush shaft; a second brush including a second brush shaft and a second brush body held on the second brush shaft; a first brush attaching member having a first shape, wherein one end of the first brush shaft is detachably attached to the first brush attaching member; and a second brush attaching member having a second shape, wherein one end of the second brush shaft is detachably attached to the second brush attaching member. The one end of the first brush shaft may have a first corresponding shape that corresponds to the first shape. The one end of the second brush shaft may have a second corresponding shape that corresponds to the second shape. Other end of the first brush shaft may have the second corresponding shape.

What is claimed is: 
     
         1 . A cleaning machine comprising:
 a first brush comprising a first brush shaft extending in a left-right direction and a first brush body held by the first brush shaft;   a second brush comprising a second brush shaft extending in the left-right direction and a second brush body held by the second brush shaft;   a first brush attaching member having a first shape, wherein one end of the first brush shaft is detachably attached to the first brush attaching member; and   a second brush attaching member having a second shape, wherein one end of the second brush shaft is detachably attached to the second brush attaching member,   wherein   the one end of the first brush shaft has a first corresponding shape that corresponds to the first shape,   the one end of the second brush shaft has a second corresponding shape that corresponds to the second shape, and   other end of the first brush shaft has the second corresponding shape.   
     
     
         2 . The cleaning machine according to  claim 1 , wherein
 one of the first shape and the first corresponding shape comprises a first convex shape,   other of the first shape and the first corresponding shape comprises a first concave shape that fits the first convex shape,   one of the second shape and the second corresponding shape comprises a second convex shape, and   other of the second shape and the second corresponding shape comprises a second concave shape that fits the second convex shape.   
     
     
         3 . The cleaning machine according to  claim 2 , wherein
 the first shape comprises the first convex shape,   the first corresponding shape comprises the first concave shape,   the second shape comprises the second convex shape, and   the second corresponding shape comprises the second concave shape.   
     
     
         4 . The cleaning machine according to  claim 2 , wherein
 the first convex shape comprises a linear first rib shape extending radially, and   the second convex shape comprises a plurality of linear second rib shapes each extending radially and arranged at an angle.   
     
     
         5 . The cleaning machine according to  claim 4 , wherein a rib width of the first rib shape is greater than a rib width of the second rib shapes. 
     
     
         6 . The cleaning machine according to  claim 1 , wherein the first brush further comprises a first brush cap covering the other end of the first brush shaft. 
     
     
         7 . The cleaning machine according to  claim 1 , further comprising:
 a first plunger being movable in the left-right direction, wherein the other end of the first brush shaft is attached to the first plunger; and   a second plunger being movable in the left-right direction, wherein the other end of the second brush shaft is attached to the second plunger.   
     
     
         8 . The cleaning machine according to  claim 1 , wherein
 the first brush body comprises first brush bristles, wherein the first brush bristles are implanted in a surface of the first brush shaft in a spiral shape that spirals in a first direction in an area of the surface from the one end of the first brush shaft toward a center of the first brush shaft and in a spiral shape that spirals in a second direction opposite to the first direction in an area of the surface from the other end of the first brush shaft toward the center of the first brush shaft, and   the second brush body comprises second brush bristles, wherein the second brush bristles are implanted in a surface of the second brush shaft in a spiral shape that spirals in the second direction in an area of the surface from the one end of the second brush shaft toward a center of the second brush shaft and in a spiral shape that spirals in the first direction in an area of the surface from the other end of the second brush shaft toward the center of the second brush shaft.   
     
     
         9 . The cleaning machine according to  claim 1 , further comprising:
 a drive shaft;   a first rotation transmitting mechanism configured to transmit rotation of the drive shaft to the first brush attaching member; and   a second rotation transmitting mechanism configured to transmit the rotation of the drive shaft to the second brush attaching member,   wherein the first brush attaching member and the second brush attaching member rotate in opposite directions to each other when the drive shaft rotates.   
     
     
         10 . The cleaning machine according to  claim 1 , further comprising:
 a wheel; and   a chassis supported by the wheel.   
     
     
         11 . The cleaning machine according to  claim 10 , further comprising a handle extending rearward and upward from the chassis and configured to be gripped by a user. 
     
     
         12 . The cleaning machine according to  claim 3 , wherein
 the first convex shape comprises a linear first rib shape extending radially,   the second convex shape comprises a plurality of linear second rib shapes each extending radially and arranged at an angle,   a rib width of the first rib shape is greater than a rib width of the second rib shapes,   the first brush further comprises a first brush cap covering the other end of the first brush shaft,   the cleaning machine further comprises:
 a first plunger being movable in the left-right direction, wherein the other end of the first brush shaft is attached to the first plunger; and 
 a second plunger being movable in the left-right direction, wherein the other end of the second brush shaft is attached to the second plunger, 
   the first brush body comprises first brush bristles, wherein the first brush bristles are implanted in a surface of the first brush shaft in a spiral shape that spirals in a first direction in an area of the surface from the one end of the first brush shaft toward a center of the first brush shaft and in a spiral shape that spirals in a second direction opposite to the first direction in an area of the surface from the other end of the first brush shaft toward the center of the first brush shaft,   the second brush body comprises second brush bristles, wherein the second brush bristles are implanted in a surface of the second brush shaft in a spiral shape that spirals in the second direction in an area of the surface from the one end of the second brush shaft toward a center of the second brush shaft and in a spiral shape that spirals in the first direction in an area of the surface from the other end of the second brush shaft toward the center of the second brush shaft,   the cleaning machine comprising:
 a drive shaft; 
 a first rotation transmitting mechanism configured to transmit rotation of the drive shaft to the first brush attaching member; and 
 a second rotation transmitting mechanism configured to transmit the rotation of the drive shaft to the second brush attaching member, 
   the first brush attaching member and the second brush attaching member rotate in opposite directions to each other when the drive shaft rotates, and   the cleaning machine further comprises:
 a wheel; and 
 a chassis supported by the wheel; and 
 a handle extending rearward and upward from the chassis and configured to be gripped by a user.