| 摘要 |
PROBLEM TO BE SOLVED: To provide a planetary gear mechanism capable of obtaining a complicated motion by one motor.SOLUTION: A planetary gear mechanism includes: a toggle mechanism 102 for alternatively energizing a lever body 101 toward stop positions on both sides in a rocking direction; a sun gear 105 arranged in a drive shaft 104; a plate body 107 for supporting a planetary gear 106; a cylindrical body 108 having inner teeth 108a; a revolution transmission shaft 109 arranged in the plate body; a ring cam 110 for operating the lever body; and means 114 for stopping the reverse rotation of the revolution transmission shaft. When the lever body is at one stop position, the lever body is engaged with a revolution transmission shaft side by irregular fitting. When the lever body is at the other stop position, the lever body is engaged with a cylindrical body side by irregular fitting. When the drive shaft is normally rotated, the revolution transmission shaft is normally rotated when the lever body is moved to the other stop position. When the drive shaft is reversely rotated, the lever body is moved to the one stop position when the reverse rotation of the revolution transmission shaft is stopped. |
