Buffering mechanism for gas circuit breaker

A gas circuit breaker comprising:

• a barrel;
• a Y-shaped link mechanism located in the barrel and cooperated with two links, the Y-shaped link mechanism including an upright member and two inclined members which are pivotably connected to a top of the upright member, the two links pivotably connected to the two inclined members respectively;
• a buffering mechanism located inside the gas circuit breaker and including
• a center piece having two protrusions extending from each of two ends thereof and two match surfaces defined in two opposite sides thereof;
• two side boards each having a pivot hole and a slot defined therethrough, the two protrusions of each end of the center piece pivotably engaged with the pivot hole and the slot respectively, each slot being sized such that the protrusion is movable therein, and
• a plurality of impact plates engaged with the two match surfaces of the center piece wherein the Y-shaped link mechanism engages with the impact plates.