| 摘要 |
PROBLEM TO BE SOLVED: To provide a door opening/closing device for a refrigerator which enables a user to open or close a door with a small force even during power failure.SOLUTION: In a door opening/closing device for a refrigerator, a drive part 20 has: a motor 50; a first gear 52 rotationally driven by the motor 50; and a second gear 53 to which rotation of the first gear 52 is transmitted through a planetary gear mechanism 6. The planetary gear mechanism 6 has: a sun gear 61 configured to engage with the first gear 52; a holder 66 which may rotate around a rotation center axis of the sun gear 61; and a planetary gear 67 which is supported by the holder 66 so as to automatically rotate. The planetary gear 67 revolves around the sun gear 61 to move between an engagement position, at which the planetary gear 67 engages with the second gear 53, and a disengagement position, at which the planetary gear 67 is disengaged from the second gear 53.SELECTED DRAWING: Figure 5 |
