Belt sander

A belt sander comprising:

• a motor driven by power supplied from a battery;
• a battery mounting portion to which the battery is removably mountable;
• a belt driving portion including (i) a drive roller to be rotated by a driving force of the motor, (ii) a driven roller, and (iii) a belt stretched over the drive roller and the driven roller and having a polishing surface for polishing a workpiece;
• a housing including (i) a bottom portion on which the belt driving portion is disposed, (ii) an upper surface portion on an opposite side from the bottom portion, (iii) a first side surface portion positioned between the bottom portion and the upper surface portion, (iv) a second side surface portion on an opposite side from the first side surface portion, and (v) a motor housing portion housing the motor;
• a handle including (i) a first extension portion coupled to the first side surface portion, (ii) a second extension portion coupled to the second side surface portion, and (iii) a grip portion connecting the first extension portion and the second extension portion;
• and
• a drive transmitting portion that is provided at the first side surface portion and that transmits the driving force of the motor to the drive roller, wherein
• the handle is disposed to surround at least a part of the battery mounted to the battery mounting portion, and
• a cross-sectional width of the second extension portion is narrower than a cross-sectional width of the first extension portion.

A belt sander comprising:

• a motor driven by power supplied from a battery;
• a battery mounting portion to which the battery is removably mountable;
• a first handle;
• a second handle disposed to surround at least a part of the battery mounted to the battery mounting portion;
• a belt driving portion including (i) a drive roller to be rotated by a driving force of the motor, (ii) a driven roller, and (iii) a belt stretched over the drive roller and the driven roller and having as a polishing surface for polishing a workpiece;
• and
• a housing including (i) a motor housing portion housing the motor, (ii) a bottom portion on which the belt driving portion is disposed, (iii) an upper surface portion on an opposite side from the bottom portion, (iv) and a back surface portion on an opposite side from the second handle with the motor housing portion interposed therebetween, wherein
• the first handle includes (i) an upper base connected at a position, of the rear surface portion, close to the upper surface portion, (ii) a lower base connected at a position, of the rear surface portion, close to the belt driving portion, and (iii) a first grip portion extending between and connecting the upper base and the lower base,
• in a side view of the belt sander, an extending direction of the first grip portion is inclined at a predetermined inclination angle with respect to the polishing surface, in a manner that an upper side of the first grip portion is closer to the rear surface portion than a lower side of the first grip portion, and
• the inclination angle is in a range from 30 degrees to 50 degrees.

A belt sander comprising:

• a motor driven by power supplied from a battery;
• a battery mounting portion to which the battery is removably mountable;
• a first handle;
• a second handle disposed to surround at least a part of the battery mounted to the battery mounting portion;
• a belt driving portion including (i) a drive roller to be rotated by a driving force of the motor, (ii) a driven roller, and (iii) a belt stretched over the drive roller and the driven roller and functioning as a polishing surface for polishing a workpiece;
• and
• a housing including (i) a motor housing portion housing the motor, (ii) a bottom portion on which the belt driving portion is disposed, (iii) an upper surface portion on an opposite side from the bottom portion, and (iv) a back surface portion on an opposite side from the second handle with the motor housing portion interposed therebetween, wherein
• the first handle includes (i) an upper base connected at a position, of the rear surface portion, close to the upper surface portion, (ii) a lower base connected at a position, of the rear surface portion, close to the belt driving portion, (iii) a first grip portion extending between and connecting the upper base and the lower base, and (iv) a switch trigger to be manually operated for switching the motor on and off, the switch trigger being provided at a position, of the first grip portion, facing the rear surface portion, and
• in a side view of the belt sander, a normal line with respect to an extending direction of the first grip portion passes through a position (i) on an opposite side, of the first grip portion, from the switch trigger, and (ii) between a rotational axis of the drive roller and a rotational axis of the driven roller.