| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent an unintended spacing gear change.SOLUTION: When arranging a spacing gear change lever 35 having an opening 44b at a floor step 44 of a drive part 41 and protruding from the opening 44b at its tip side, the spacing gear change lever 35 comprises a lever pivot arm 45 which forms a base end side of the lever, and can freely oscillate, an operation lever 46 which is slidably supported to a lever telescopic direction by the lever pivot arm 45, and a spring 47 which energizes the operation lever 46 to a contraction direction. At a normal time, an oscillation operation of the spacing gear change lever 35 is regulated by the engagement of an engagement pin 49 arranged at the operation lever 46 with a detent groove 50a of a regulation guide 50 arranged at a fixed side, and when the operation lever 46 is slide-operated in an elongation direction while withstanding an energization force of the spring 47, the engagement pin 49 is released from the detent groove 50a of the regulation guide 50, and the oscillation operation of the spacing gear change lever 35 is permitted.</p> |
