| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent disengagement of an intermediate gear from a driven gear by the reaction force from the driven gear without increasing the angle of arrangement. <P>SOLUTION: A face for receiving the load on a rotary shaft 102c of a second groove 110a for bearing formed on a second gear part 102b side to be engaged with a driven gear 103, in other words, a second receiving face 110b in contact with the rotary shaft 102c of the second groove 110a forms an inclined receiving part 110c in which the distance R2 from the center O1 of rotation of a driving gear 101 is increased as being separated from the driven gear 103 (toward the left side of the figure). The inclined receiving part 110c applies the force in the direction reverse to the direction separating an intermediate gear 102 from the driven gear 103, in other words, the force 22 including the component in the direction for bringing the intermediate gear 102 close to the driven gear 103 is applied to the rotary shaft 102c as the counteraction of the force F2 applied to the rotary shaft 102c, and the intermediate gear 102 is not separated from the driven gear 103. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
