Portable machining device

Abstract

A communication adapter 31 for conducting radio communication between a portable machining device 1 and a dust collector 40, such that the dust collector 40 may operate synchronously with the portable machining device 1 with respect to a start/stop operation when performing a cutting task is detachably incorporated in a handle 20 of the portable machining device 1. Because of this arrangement, a high level of dust-proof ability as well as ease of maneuverability in attaching and detaching the communication adapter 31 can be achieved.

1 .- 20 . (canceled) 
     
     
         21 . A portable machining device, comprising:
 a base having a lower surface configured to contact a material to be cut;   a machining device main body which is supported above the base;   an electric motor in the machining device main body;   a rotary cutting blade rotated by the electric motor, the rotary cutting blade selectively protruding below the lower surface of the base;   a handle arranged in parallel to the rotary cutting blade; and   an adapter device (1) configured to communicate with an incidental device and (2) that is detachably received in an interior of the handle.   
     
     
         22 . The portable machining device of  claim 21 , further comprising a support portion configured to support the machining device main body and the rotary cutting blade with respect to the base in a tilt angle adjustable manner such that the rotary cutting blade can move between an erect position in which the rotary cutting blade is substantially perpendicular to the base and a tilted position in which the rotary cutting blade is at an angle other than 90° with respect to the base;
 wherein the adapter device, when received in the interior of the handle, moves upward with respect to the base when the rotary cutting blade is moved from the erect position to the tilted position. 
 
     
     
         23 . The portable machining device of  claim 21 , wherein the adapter device, when received in the interior of the handle, is closer to the rotary cutting blade than to the electric motor. 
     
     
         24 . The portable machining device of  claim 21 , wherein:
 the rotary cutting blade is rotated about a blade rotation axis;   the blade rotation axis intersects the electric motor; and   the blade rotation axis is located closer to the base than the adapter device when the adapter device is received in the interior of the handle.   
     
     
         25 . The portable machining device of  claim 21 , wherein:
 the rotary cutting blade is rotated about a blade rotation axis;   a dust collection port is located at a trailing side of the blade rotation axis; and   the adapter device is disposed on a side of the blade rotation axis opposite the trailing side when the adapter device is received in the interior of the handle.   
     
     
         26 . The portable machining device of  claim 21 , wherein:
 the handle includes a recess that receives the adapter device; and   the recess has an opening in a direction facing away from the rotary cutting blade through which the adapter can pass when the adapter is inserted into and removed from the recess.   
     
     
         27 . The portable machining device of  claim 26 , wherein:
 the rotary cutting blade is on a first side of the handle;   the opening is a second side of the handle; and   the second side is opposite the first side such that the handle is between the opening and the rotary cutting blade.   
     
     
         28 . The portable machining device of  claim 21 , wherein:
 the handle comprises a front grip; and   the adapter device is in the front grip of the handle when the adapter device is received in the interior of the handle.   
     
     
         29 . The portable machining device of  claim 21 , wherein:
 the adapter device is electrically connected to a controller; and   the controller is positioned substantially perpendicular to the base.   
     
     
         30 . The portable machining device of  claim 21 , wherein the adapter device, when received in the interior of the handle, is above the electric motor. 
     
     
         31 . A portable machining device, comprising:
 a base having a lower surface configured to contact a material to be cut;   a machining device main body which is supported above the base;   an electric motor in a motor case portion of the machining device main body;   a rotary cutting blade rotated around a rotational axis by the electric motor, the rotary cutting blade selectively protruding below the lower surface of the base; and   an adapter device (1) configured to communicate with an incidental device and (2) that is detachably received in the motor case portion.   
     
     
         32 . The portable machining device of  claim 31 , further comprising a support portion configured to support the machining device main body and the rotary cutting blade with respect to the base in a tilt angle adjustable manner such that the rotary cutting blade can move between an erect position in which the rotary cutting blade is substantially perpendicular to the base and a tilted position in which the rotary cutting blade is at an angle other than 90° with the base;
 wherein the adapter device, when received in the motor case portion, moves upward with respect to the base when the rotary cutting blade is moved from the erect position to the tilted position. 
 
     
     
         33 . The portable machining device of  claim 31 , wherein:
 the motor casing portion includes an aperture configured such that the adapter device can pass through the aperture; and   the aperture is located in a surface of the motor casing portion that faces away from the rotary cutting blade.   
     
     
         34 . The portable machining device of  claim 31 , wherein:
 the adapter device is electrically connected to a controller; and   the controller is arranged so as to be tilted in a direction parallel to the rotational axis of the of the rotary cutting blade.   
     
     
         35 . The portable machining device of  claim 31 , wherein:
 the adapter is electrically connected to a controller; and   the controller is arranged so that an upper portion thereof is closer to the rotary cutting blade than a lower portion thereof.