| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve further safety by reducing reclosing after blocking and also enable to be easily attached to an existing breaker. <P>SOLUTION: When a blocking fixture 10 is used, a lever holding part 12 is covered on a lever 22 of a breaker 20. When an intense shake occurs by an earthquake, a spindle 16 pushes down the lever 22 downward through a connection part 14 by the principle of leverage. With this, a status of the lever 22 is changed from "ON" to "OFF", so that electricity is blocked. And also, when the lever 22 is moved downward, the blocking fixture 10 comes off and is dropped from the lever 22 of the breaker 20. Therefore, the lever 22 is well prevented from being reverted from the "OFF" status to the "ON" status. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
