ENERGY-STORING MECHANISM WITH FORCING MECHANISM, AND ON-LOAD TAP CHANGING DEVICE

摘要

There are provided an energy-storing unit with a forcing mechanism and an on-load tap changing device provided with the same which employ an inexpensive and simple structure and which can suppress a loading torque to operate stably. A forcing mechanism built in an energy-storing unit includes a protrusion 8, a bearing 9, and a loading cam 17. Among those components, the protrusion 8 is attached to the bottom face of an eccentric cam 2, and the bearing 9 is attached to the tip of the protrusion 8. The loading cam 17 is an isosceles triangle having a vertex that is substantially 90 degrees, and is attached to the top face of an energy-storing case 5. The loading cam 17 becoming in contact with the bearing 9 causes a crank 6 to rotate through the energy-storing case 5, and feeds a catch 7 to a standby position.