| 摘要 |
PROBLEM TO BE SOLVED: To steplessly regulate mowing height by steplessly adjusting the height position of wheels from a lawn mower main body by one operation. SOLUTION: When a rotator 24 is rotated by rotating and operating an operation knob part 25, a vertical moving body 27 having a female screw part 27a screwed to a male screw part 26 is moved in the vertical direction. The intermediate shaft part 31a of a crank shaft 31 is interlocked with the vertical movement of the vertical moving body 27 and moved in the longitudinal direction in a gap 29 while moving in the vertical direction. Since the movement of the intermediate shaft part 31a is a rotational motion around the bearing part of the frame 14 of the crank shaft 31, the crank shaft 31 is rotated around the bearing part of the frame 14. Since a wheel fixing plate 32 is rotated by the rotation of the crank shaft 31 and the wheels 1a in which the other end of the wheel fixing plate 32 is a rotation center is rotated around the end part of the crank shaft 31 as the rotation center, the relative vertical height position of wheels 1a from the lawn mower main body 3 is regulated. COPYRIGHT: (C)2007,JPO&INPIT
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