Transmission device of solid-sealed vacuum arc-extinguishing chamber

The utility model relates to the technical field of vacuum circuit breakers, in particular to a transmission device for a solid-sealed vacuum arc-extinguishing chamber, which comprises a support plate, an arc-extinguishing chamber over-travel pressure spring arranged on the support plate, a linear notch and an arc notch, the linear notch and the arc-shaped notch are formed in the supporting plate, the position of the linear notch is matched with the other end of the arc extinguish chamber overtravel pressure spring, and the arc-shaped notch is located above the linear notch; the circuit breaker further comprises a first arc extinguish chamber transmission connecting lever, a second arc extinguish chamber transmission connecting lever, a third arc extinguish chamber transmission connecting lever and a fourth arc extinguish chamber transmission connecting lever. Compared with the prior art, the utility model has the advantages that the multi-connecting-rod mechanism is adopted, so that the transmission is relia