Dust collection device for electric power tool, electric power tool, and dust collection system

Abstract

A dust collection device for an electric power tool includes a main body case that includes an air exhaust port and is attachable to a hammer drill, a dust box provided therein with a filter, and a tubular sliding portion that has a base end connected to a connection port provided on the main body case, that includes a suction port at its front end, and that is slidable in a front-rear direction, and includes therein a dust collection path formed to pass from the suction port through the filter to the air exhaust port. The connection port is provided on a side surface of the main body case, and connected to a flexible hose serving as a base end of the sliding portion, and a side surface of the dust box is provided with an inlet port communicating with the connection port.

What is claimed is: 
     
         1 . A dust collection device for an electric power tool comprising:
 a main body case that (1) includes an air exhaust port, (2) is attachable to the electric power tool, (3) houses a motor, a dust collection fan and wiring for the motor, (4) has a connection port, (5) includes a motor chamber, and (6) has an internal partition;   a dust box that houses a filter; and   a tubular sliding portion that (1) has a base end and a front end, (2) is slidable in a front-rear direction, and (3) includes a suction port at the front end; wherein:   the base end is connected to the connection port;   the motor is housed in the motor chamber;   a dust collection route is internally formed in the dust collection device such that the dust collection route starts at the suction port, passes through the filter, passes through the motor chamber after passing through the filter, and ends at the air exhaust port; and   the internal partition is positioned to inhibit air in the dust collection route from contacting the wiring.   
     
     
         2 . The dust collection device for an electric power tool according to  claim 1 ,
 wherein the motor includes an output shaft and the motor is positioned in the main body case such that the output shaft extends in the front-rear direction.   
     
     
         3 . The dust collection device for an electric power tool according to  claim 1 , wherein:
 the dust box is below the main body case; and   the motor is above the dust box.   
     
     
         4 . The dust collection device for an electric power tool according to  claim 2 , wherein:
 the dust box is below the main body case; and   the motor is above the dust box.   
     
     
         5 . The dust collection device for an electric power tool according to  claim 1 , wherein:
 the main body case is comprised of right and left half-split cases having ribs inside the cases; and   the internal partition is formed by butting the ribs.   
     
     
         6 . The dust collection device for an electric power tool according to  claim 2 , wherein:
 the main body case is comprised of right and left half-split cases having ribs inside the cases; and   the internal partition is formed by butting the ribs.   
     
     
         7 . The dust collection device for an electric power tool according to  claim 4 , wherein:
 the main body case is comprised of right and left half-split cases having ribs inside the cases; and   the internal partition is formed by butting the ribs.   
     
     
         8 . The dust collection device for an electric power tool according to  claim 1 , further comprising a controller that (1) controls the motor and (2) is located behind the motor. 
     
     
         9 . The dust collection device for an electric power tool according to  claim 2 , further comprising a controller that (1) controls the motor and (2) is located behind the motor. 
     
     
         10 . An electric power tool comprising
 the dust collection device for an electric power tool according to  claim 1 .