| 摘要 |
PROBLEM TO BE SOLVED: To provide a door opening device capable of saving a space in installation by thinning a driving mechanism.SOLUTION: A door opening device 24 includes a motor 37, a rotary member 36 rotated by rotation of the motor 37, a driving shaft 32 connected to the rotary member 36 to rotate the same, and a connecting member 29 converting a rotating motion of the rotary member 36 into a linear motion. The door opening device further includes an output gear 67 having a second sliding face 84 sliding to a first sliding face 83 when an outer periphery at a side opposite to the rotary member 36, of the driving shaft 32 is regarded as the first sliding face 83, and a relationship of a>b is satisfied when a distance from a center of the rotation of the driving shaft 32 to a sliding position of the first sliding face 83 and the second sliding face 84 is a, and a distance from the sliding position of the first sliding face 83 and the second sliding face 84 to a tooth tip of the output gear 67 is b. |
