| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bush cutter capable of using a bearing for the same lifetime as a standard by sealing a lower surface and a top surface of the bearing, which is rotatably provided with a guide part for an inside case, with inexpensive lower and upper sealing parts. <P>SOLUTION: The bush cutter includes: a bush cutting blade 9 provided at the tip of a handle shaft and mounted to a rotary shaft 13 which is rotary driven; the inside case 15 provided for the rotary shaft 13; the guide part 10 arranged on a lower surface side of the brush cutting blade 9, rotatably provided outside the inside case 15 in the radial direction through the bearing 19, and projecting on a side toward a ground surface than a rotation driving side part 11 including the bush cutting blade 9; the annular lower sealing part 61 provided for the guide part 10 and sealing the lower surface 19a on a side of the bearing 19 toward the ground surface; and the annular upper sealing part 62 supported on the inside case 15 side, and sealing the top surface 19b on the side toward the bush cutting blade 9 of the bearing 19. <P>COPYRIGHT: (C)2012,JPO&INPIT |
