Long rod polishing device

Abstract

A long rod polishing device includes a prismatic or columnar battery, a battery mounting portion, an electric motor, a pad, and a rod portion. The battery is mountable to the battery mounting portion. The electric motor is driven by an electric power from the battery. The pad has a polishing surface and moves by a driving force from the electric motor. The rod portion has an end portion to which the pad is coupled. The battery mounted to the battery mounting portion has a longest side. The longest side has a direction so as to form an angle with respect to a second imaginary straight line. The second imaginary straight line is perpendicular to both of a center axis of the rod portion and a first imaginary straight line. The first imaginary straight line is perpendicular to the center axis and parallel to the polishing surface of the pad.

What is claimed is: 
     
         1 . A long rod polishing device comprising:
 a prismatic or columnar battery;   a battery mounting portion to which the battery is mountable;   an electric motor driven by an electric power from the battery;   a pad having a polishing surface, the pad moving by a driving force from the electric motor; and   a rod portion having an end portion to which the pad is coupled, wherein   the battery mounted to the battery mounting portion has a longest side, the longest side has a direction so as to form an angle with respect to a second imaginary straight line, the second imaginary straight line is perpendicular to both of a center axis of the rod portion and a first imaginary straight line, and the first imaginary straight line is perpendicular to the center axis and parallel to the polishing surface of the pad.   
     
     
         2 . The long rod polishing device according to  claim 1 , wherein
 the longest side of the battery mounted to the battery mounting portion has the direction identical to a direction of the first imaginary straight line.   
     
     
         3 . The long rod polishing device according to  claim 1 , wherein
 the battery mounted to the battery mounting portion has a center in the a second imaginary straight line direction on the center axis of the rod portion viewed from the first imaginary straight line direction.   
     
     
         4 . The long rod polishing device according to  claim 1 , further comprising
 a handle portion mounted to an end portion of the rod portion on a side opposite to the pad, wherein   the handle portion includes a grip portion and a dust collection hose coupling portion, the grip portion is configured to be gripped by a user, and a dust collection hose is couplable to the dust collection hose coupling portion, and   the battery mounted to the battery mounting portion is located between the grip portion and the dust collection hose coupling portion in the second imaginary straight line direction.   
     
     
         5 . The long rod polishing device according to  claim 1 , wherein
 the longest side of the battery mounted to the battery mounting portion has the direction so as to form an angle with respect to the center axis of the rod portion.   
     
     
         6 . The long rod polishing device according to  claim 1 , wherein
 a plurality of the batteries are mountable to the battery mounting portions.   
     
     
         7 . The long rod polishing device according to  claim 6 , wherein
 a plurality of the battery mounting portions are disposed such that the rod portion is sandwiched between the plurality of battery mounting portions,   a part of the plurality of batteries is mounted to a part of the battery mounting portions, and   another part of the plurality of batteries is mounted to another part of the battery mounting portions.   
     
     
         8 . The long rod polishing device according to  claim 1 , wherein
 the longest side of the battery mounted to the battery mounting portion has the direction identical to a direction of the center axis of the rod portion.   
     
     
         9 . The long rod polishing device according to  claim 1 , wherein
 the electric motor and the pad are held to a head portion housing, and   the battery mounting portion is located at the head portion housing.   
     
     
         10 . The long rod polishing device according to  claim 9 , wherein
 the battery mounting portion is located on a top of the head portion housing.   
     
     
         11 . The long rod polishing device according to  claim 9 , wherein
 the battery mounting portion is located on a side portion of the head portion housing.   
     
     
         12 . The long rod polishing device according to  claim 1 , further comprising
 a handle portion mounted to an end portion of the rod portion on a side opposite to the pad, wherein   the handle portion includes a dust collection hose coupling portion to which a dust collection hose is couplable, and   the battery mounting portion is located at a part close to the pad with respect to the dust collection hose coupling portion in the handle portion.   
     
     
         13 . The long rod polishing device according to  claim 1 , wherein
 the battery is slid to be mounted to the battery mounting portion.   
     
     
         14 . The long rod polishing device according to  claim 1 , wherein
 the battery is a lithium-ion battery.