一种塑壳断路器多片式动触头及触头系统

本发明公开了一种塑壳断路器多片式动触头，由触头架、支架、触指、上触头弹簧、下触头弹簧、第一圆柱、第二圆柱、隔板、第一滑动轴承、第一卡簧、转轴、第二卡簧和第二滑动轴承等组成，转轴通过第一轴承和第二轴承安装在触头架上，多片触指并列安装在转轴上，每片触指与触头架之间安装上触头弹簧和下触头弹簧用于提供触头压力；本发明专利的多片式动触头通过在每片触指上直接安装压簧提供触头压力，无需中间转换机构，不仅保证了触头压力，还大大提高了空间利用率，在有限空间里可以尽可能安装多片触指，降低了动触头Holm力，提高了触头的短时耐受能力，而且增大了触头的有效接触面积，降低了触头的接触电阻从而提高了触头系统的通流能力。 The invention discloses a multi-piece moving contact of a molded case circuit breaker. The contact is composed of a contact frame, a support, contact fingers, an upper contact spring, a lower contactspring, a first cylinder, a second cylinder, a partition plate, a first sliding bearing, a first snap spring, a rotating shaft, a second snap spring, a second sliding bearing and the like. The rotating shaft is arranged on the contact frame through a first bearing and a second bearing, the plurality of contact fingers are arranged on the rotating shaft in parallel, and the upper contact spring andthe lower contact spring are arranged between each contact finger and the contact frame and are used for providing contact pr