KRB-5404
33
4-1-5. Motion of operation mechanisms
Figs. 24 - 27 illustrate the motion of the charging and ON-OFF mechanisms.
For manual closing operation, ON button
◯
1
rotates
counterclockwise. For electrical closing operation,
push rod
◯
1
' protrudes downward from the latch
release coil (LRC) and charge latch trigger
◯
2
rotates
clockwise. This rotates closing trigger shaft
◯
3
clockwise and closing release lever
◯
4
disengages
from a semicircular pawl and rotates clockwise. And
charging cam
◯
5
rotates counterclockwise, so that
charging lever
◯
7
disengages from closing spring
◯
6
and rotates counterclockwise. Closing cam
◯
8
is
pushed up by charging lever
◯
7
and rotates clockwise.
At this time, each component is positioned as shown in
Fig. 26. Continued to Fig. 25.
Fig. 24 Closing motion 1 (discharge motion)
Closing cam
◯
8
rotating clockwise causes closing link
and top link
◯
9
to be pushed straight. This rotates
closing toggle cam
◯
10
connected with closing link
◯
9
counterclockwise, so that crossbar
◯
11
rotates clockwise
and thus moving contact
◯
12
comes in contact with
stationary contact
◯
13
. At this time, each component is
positioned as shown in Fig. 27.
Fig. 25 Closing motion 2
◯
1
'
◯
2
◯
1
◯
4
◯
5
◯
6
◯
7
◯
8
◯
3
◯
10
◯
11
◯
12
◯
9
◯
8
◯
13
◯
13