公开(公告)号：US3729771A

公开(公告)日：1973-05-01

申请号：US3729771D

申请日：1972-03-01

Applicant: RIXSON FIREMARK

Inventor： CRANE B ,  D HOOGE R ,  ROBERTS F

IPC: E05F3/22

CPC classification number: E05F3/222 ,  E05F2003/228 ,  E05Y2201/462 ,  E05Y2201/474 ,  E05Y2900/132 ,  Y10T16/22 ,  Y10T16/2799 ,  Y10T292/1082

Abstract: An improved latching lever assembly for use in an electromechanical door holder-closer having a closer spring, a dashpot, and an electromagnet. The electromagnet actuates the lever assembly to latch the spring-dashpot combination to effect a desired door hold open position. The lever assembly comprises a lever, a fulcrum at one end of the lever, and an armature located generally at the other end of the lever and electromagnetically coupled to the electromagnet. A latching detent is located on the lever intermediate the fulcrum and armature to latch a camming roller to arrest the spring-dashpot combination when the electromagnet is energized. An armature-lever coupling spring resiliently couples the armature to the lever to enable the lever to pivot about its fulcrum during manual override of the door holder-closer without a corresponding movement of the armature relative the energized electromagnet, thereby eliminating armature release noises.

Abstract translation: 一种用于具有更靠近的弹簧，缓冲器和电磁体的电动机门闭合器中的改进的闭锁杆组件。 电磁铁驱动杠杆组件以将弹簧缓冲器组合锁定以实现期望的门保持打开位置。 杠杆组件包括杠杆，杠杆的一端处的支点和大体位于杆的另一端处的电枢，并且电磁耦合到电磁体。 当电磁铁通电时，闩锁棘爪位于支杆和电枢之间的杠杆上，以锁定凸轮辊以阻止弹簧缓冲器组合。 电枢杆联接弹簧将电枢弹性地耦合到杠杆，以使得在门保持器 - 关闭器的手动超驰期间，杠杆能够绕其支点枢转，而不会相对于通电电磁体相应地移动电枢，从而消除电枢释放噪声。