公开(公告)号：US20030227213A1

公开(公告)日：2003-12-11

申请号：US10331008

申请日：2002-12-26

Applicant: NHK Spring Co., Ltd.

Inventor： Hiroyoshi Yamaguchi ,  Hajime Shono

IPC: A47C031/00

CPC classification number: B60N2/4279 ,  B60N2/4221 ,  B60N2/42718 ,  B60N2/42763 ,  B60N2/42781 ,  B60R22/1951 ,  B60R22/1955 ,  B60R22/26 ,  B60R2022/1806

Abstract: Provided is a compact power actuator which is simple in structure, reliable in operation, and easy to install. The power actuator comprises a piston assembly which is received in a fixed cylinder for either directly or indirectly engaging a driven member, and a propellant for rapidly increasing the inner pressure of the cylinder to push the piston assembly outward so that the driven member may be instantaneously driven. A spring is interposed between the piston assembly and the propellant to urge the piston assembly in the projecting direction. The front end of the propellant fits into the central opening so that the available space may be filly utilized. Therefore, the size of the power actuator can be reduced, and the required amount of the pyrotechnic material for the propellant can be reduced due to the reduced initial volume of the chamber for the expansion of the generated gas.

Abstract translation: 提供一种结构简单，操作可靠，易于安装的紧凑型动力执行机构。 动力致动器包括活塞组件，其被容纳在用于直接或间接接合从动构件的固定气缸中，以及用于快速增加气缸的内部压力以推动活塞组件向外的推进剂，使得从动构件可以瞬时 驱动。 在活塞组件和推进剂之间插入弹簧以沿着突出方向推动活塞组件。 推进剂的前端装入中央开口，以便可利用空间。 因此，可以减小功率致动器的尺寸，并且由于用于膨胀所产生的气体的室的初始容积减小，可以减少用于推进剂的所需量的烟火材料。