| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems that a conventional continuously variable transmission constituted by a disc wheel applying friction force, a belt, and a conical friction wheel has the possibility of slip and a limited speed ratio to reduce a variable speed range, and so it requires superior wear resistant materials for maintaining friction force, and also requires maintenance at all times and replacement of worn components and materials. SOLUTION: A gear mechanism constituted only by gears solves the above problems. The gear mechanism has a main driving shaft 1 connected to a main power machine, a driven shaft 16 connected to a load, and a rotating shaft 8 for external rotation operation, these shafts being linked with the plurality of gears. The rotating shaft 8 is externally operated to rotate the driven shaft 16 at a selectively variable speed higher or lower than the main driving shaft 1. The mechanism constituted only by the gears has no possibility of slip as in the conventional continuously variable transmission and a great advantage in maintenance, and increases a variable speed range as well as a service range with the positive/reverse rotation of the driven shaft relative to the main driving shaft. COPYRIGHT: (C)2008,JPO&INPIT
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