Door actuator

摘要

A power boost assembly is disclosed that can be used with a door actuator, such as a door closer. The power boost assembly is structured to store an energy during a first movement of a door and release the stored energy during a second movement of the door. In one form the power boost assembly can be structured as a module that can be added to an existing door and door closer installation. In one form the power boost assembly is used to increase a closing force imparted to a door to ensure a latching event.

主权项

1. An apparatus comprising:
a power boost package configured to be coupled with a door pinion of a door, the power boost package structured as an attachable module for use with a spring-damper door actuator that itself is coupled to and used to move a door through a coupled relationship with the door pinion, the power boost package including a chassis and having a portion configured to be in power communication with the spring-damper door actuator for supplemental power boost movement of the door to aid the door spring-damper door actuator when the door is closed, the chassis of the power boost package forming a structure to which is coupled:
an actuation member structured to contribute a power in the movement of the door; andan energy storage device capable of being energized by movement of the actuation member, the energy storage device operable to store a boost energy as a result of a first movement of the actuation member, and configured to release the boost energy at a release position of the actuation member, the boost energy is released through the actuation member as a result of a second movement of the actuation member.