| 摘要 |
PROBLEM TO BE SOLVED: To provide a door opening and closing device for an elevator, which enables a door to be automatically opened when a passenger becomes confined in a car while the car is located in a door opening and closing zone.SOLUTION: According to the present invention, a central control section 1 performing the overall control of an elevator has a function for specifying a plurality of causes of a door opening abnormality as abnormal modes different from each other, for example, abnormal modes No. 0 to 5. Upon the occurrence of the door opening abnormality, a door control section 2 controlling a door motor 5 in response to a signal output from the central control section 1 determines whether an abnormal mode specified by the central control section 1 is an abnormal mode No. 0, 1, or 2 enabling the opening of a door, when a car position detection device 12 detects that a car is located in a prescribed door opening and closing zone, and when a load sensor 11 detects that a passenger is present in the car. When determining that the specified abnormal mode is the abnormal mode enabling the opening of the door, the door control section 2 controls the door motor 5 to open the door. |
