| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the rotational balance of a three dimensional crank mechanism by providing a balance weight. SOLUTION: Drive shafts 23, 24 are supported on support walls 35, 36 via bearing members 33, 34. On the outside of the support walls 35, 36, the drive shafts 23, 24 are fixed with driven gears 25, 26. On the side of the driven gears 25, 26 that are applied with drive force via the driving gears 27, 28, inclined cranks 37, 38 are integrally formed. On the side of the driven gears 25, 26, a balance weight 252 each is integrally formed on the opposite side from the cranks 37, 38 on both sides of the rotational center of the crank 37, 38.</p> |
