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    • 1. 发明授权
    • Circuit interrupter with covered accessory case with accessory having
lock-in feature and pull tab
    • 电路断路器带有带附件的带盖的附件盒,带有锁定功能和拉片
    • US5921380A
    • 1999-07-13
    • US994633
    • 1997-12-19
    • H. Richard BeckMichael A. BrownTrent A. ChontasLance GulaWilliam D. MunschKaren L. PanianRobert M. PomayboEdward M. Roberts
    • H. Richard BeckMichael A. BrownTrent A. ChontasLance GulaWilliam D. MunschKaren L. PanianRobert M. PomayboEdward M. Roberts
    • H01H71/02H01H9/02H01H13/04
    • H01H71/0228
    • A molded case circuit breaker is taught with a housing base and a primary cover disposed on the housing base. The primary cover has a recess therein for an auxiliary module which is disposed in the recess. A secondary cover is disposed on the primary cover for covering the recess when the auxiliary module is disposed therein. In order to secure the auxiliary module underneath the secondary cover in the recess of the primary cover, the module has deposed thereon a locking protrusion which is complimentary with a locking opening in the primary cover. The locking protrusion is flexible and has a longitudinal central bulge so that as the protrusion is pressed inwardly into the opening, the bulge causes the flexible protrusion to reduce diameter due to the presents of longitudinal slots therein until the bulge has passed the opening in which case it springs outwardly toward its normal position thus securing the protrusion in the base. A flexible pull tab is provided for displacement under the auxiliary or secondary cover so that when the auxiliary or secondary cover is removed the pull tab may be tugged upon to remove the module from the primary cover by providing the reverse operation to the insertion operation previously described.
    • 教导了一种模制外壳断路器,其具有壳体基座和设置在壳体基座上的主盖。 主盖在其中具有用于辅助模块的凹部,该辅助模块设置在凹部中。 辅助盖设置在主盖上,用于当辅助模块设置在其中时覆盖凹部。 为了将辅助模块固定在主盖的凹部中的辅助盖下方,模块已经在其上放置了与主盖中的锁定开口互补的锁定突起。 锁定突起是柔性的并且具有纵向中心凸起,使得当突起被向内压入开口时,凸起导致柔性突起由于其中存在纵向狭槽而减小直径,直到凸起已经通过开口,在这种情况下 它向外弹簧朝向其正常位置,从而将突起固定在基座中。 提供了一种柔性拉片,用于在辅助或辅助盖子下方移位,使得当辅助或二次盖子被移除时,拉片可以被拉紧,以便通过提供与先前描述的插入操作相反的操作来从主盖子移除模块 。