| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve a manual opening device for an elevator landing door, with which the landing door allowed to be opened with operation of a key rod can be opened simply by manual operation, and workload is remarkably reduced. <P>SOLUTION: An endless cogged belt 10 is hanged over a pair of a driven pulleys 9, arranged separately in a width direction at the lower side of a casing 2, and a drive pulley 7, arranged at the upper side of the casing 2. A pulley carriage 11, supporting the pair of driven pulleys 9 rotatably, is mounted on the casing 2 movably in a vertical direction, is lowered by engaging an eccentric cam 19 connected to a lever 18 with a cam receiver 15, and is held at a position where the lower end of a driven pulley 9 is extended to a specific distance from the casing 2. A fork 25 is mounted to the casing 2, in a manner extending the tip end side from the lower end of the casing 2 to the back side, and the first hand turning handle 21 is connected so that the drive pulley 7 can perform rotation driving. <P>COPYRIGHT: (C)2012,JPO&INPIT |
