| 摘要 |
PURPOSE:To release an opening to a satisfactry degree according to the purpose when the opening is to be opened and shut with a door and to lessen the amount of the door hopping out ahead as much as possible at the time of opening and closing. CONSTITUTION:One-side ends of cranks 2, 3 which belong to the first parallel crank mechanism are coupled with the refrigerator 1 side on both sides of a door 7, and the cranks 3 left and right are consolidated with legs on both sides of a commonly used U-shaped coupling frame 18. A link 4 is coupled with the other ends of the cranks 2, 3, and other cranks 5, 6 belonging to the second parallel crank mechanism are coupled therewith, and the door 7 is coupled with the other ends of these cranks 5, 6. A gear 8 is fitted on a shaft 4b and secured to the link 4 while another gear 9 is fitted on a shaft 4c and fixed to the crank 6 while meshing with the gear 8. A motor rotates a drive arm 12, and this rotating motion is converted into a swing motion round the shaft 3a of the crank 3, and the door 7 makes parallel movement at two steps so as to open and close the opening 1a. |
