Working machine

Abstract

Example embodiments of the present invention include a machine body including a frame, an operator's seat supported by the frame, a prime mover room to house a prime mover supported by the frame, the prime mover room and the operator's seat being arranged in a first direction, a unit room to house an electronic control unit to control the prime mover, the unit room and the prime mover room being arranged in a second direction intersecting the first direction, a first partition wall to divide a space above the frame into the prime mover room and an operator's seat-side space on the same side of the prime mover room as the operator's seat such that they are arranged in the first direction, and a second partition wall, including an edge portion in close contact with the first partition wall, to separate the prime mover room from the unit room.

What is claimed is: 
     
         1 . A working machine comprising:
 a machine body including a frame;   an operator's seat supported by the frame;   a prime mover room to house a prime mover supported by the frame, the prime mover room and the operator's seat being arranged in a first direction;   a unit room to house an electronic control unit to control the prime mover, the unit room and the prime mover room being arranged in a second direction which intersects the first direction;   a first partition wall to divide a space above the frame into the prime mover room and an operator's seat-side space on the same side of the prime mover room as the operator's seat such that the prime mover room and the operator's seat-side space are arranged in the first direction; and   a second partition wall, including an edge portion in close contact with the first partition wall, to separate the prime mover room from the unit room.   
     
     
         2 . The working machine according to  claim 1 , further comprising:
 a partition wall body including the second partition wall; wherein   the partition wall body includes a bottom wall which extends from a lower edge portion of the second partition wall toward the unit room and which is in close contact with the first partition wall at a side where the operator's seat is present.   
     
     
         3 . The working machine according to  claim 2 , further comprising:
 an exterior body to cover a machine room including the prime mover room and the unit room; and   a separation wall portion which is in close contact with an edge portion of the second partition wall that is different from the edge portion of the second partition wall in close contact with the first partition wall and the lower edge portion of the second partition wall and which extends in the same direction as the bottom wall; wherein   the exterior body includes a first exterior cover which is located on one of opposite sides in the second direction of the second partition wall, which faces the second partition wall with a space therebetween, which covers the electronic control unit in the unit room at the one of the opposite sides in the second direction of the electronic control unit, and which is configured to be in close contact with the separation wall portion.   
     
     
         4 . The working machine according to  claim 1 , wherein the electronic control unit is fixed to the second partition wall. 
     
     
         5 . The working machine according to  claim 1 , wherein the second partition wall includes a metal plate. 
     
     
         6 . The working machine according to  claim 3 , wherein
 the exterior body includes a second exterior cover to cover equipment on the frame from the other of the opposite sides in the second direction of the equipment at the opposite side of the equipment from the first exterior cover in the second direction; and   the second exterior cover includes an air intake hole to allow outside air to enter the prime mover room therethrough.   
     
     
         7 . The working machine according to  claim 1 , wherein
 the frame includes a base plate to support the operator's seat and the prime mover; and   the base plate includes an air exhaust hole to allow air in the prime mover room to be discharged therethrough.   
     
     
         8 . The working machine according to  claim 6 , further comprising:
 a forced-air-cooled radiator provided in the prime mover room to cool the prime mover; wherein   the forced-air-cooled radiator is provided on the same side of the prime mover as the second exterior cover.   
     
     
         9 . The working machine according to  claim 1 , further comprising a heat insulation body on a surface of the second partition wall that faces toward the prime mover room, the heat insulation body being configured to prevent or reduce heat transfer from the prime mover room toward the unit room. 
     
     
         10 . The working machine according to  claim 9 , wherein
 the electronic control unit is fixed to the second partition wall; and   the heat insulation body is provided at least in a region of the second partition wall that overlaps the electronic control unit.   
     
     
         11 . The working machine according to  claim 1 , wherein the second partition wall includes a wire hole to allow a wire connecting the prime mover and the electronic control unit to extend therethrough between the prime mover room and the unit room, and includes a sealing body to seal a gap between an outer periphery of the wire and an inner periphery of the wire hole. 
     
     
         12 . The working machine according to  claim 11 , wherein
 the sealing body includes:
 a cover body to cover a side of the wire hole that faces the unit room, the cover body including a wire insertion portion to allow the wire to extend outward therethrough in a direction perpendicular to the second direction; and 
 a grommet fitted to the wire insertion portion and configured to allow the wire to be inserted therethrough.