公开(公告)号：US20120137802A1

公开(公告)日：2012-06-07

申请号：US13312599

申请日：2011-12-06

申请人： Gerard BALDUCCI ,  Marc QUENERCH'DU

发明人： Gerard BALDUCCI ,  Marc QUENERCH'DU

IPC分类号： F16H25/12

CPC分类号： B64C25/24 ,  F16H25/2021 ,  Y10T74/18576 ,  Y10T74/18672 ,  Y10T74/18688 ,  Y10T74/18696 ,  Y10T74/18728

摘要： The invention relates to a telescopic actuator comprising: a cylinder having means for coupling it to a first external element; a rod mounted to slide telescopically in the cylinder along a sliding axis and including means for coupling it to a second external element; a lead screw mounted to rotate in the cylinder about the sliding axis and extending inside the rod to co-operate with a nut secured to the rod, such that rotating the lead screw causes the rod to slide; drive means for driving the lead screw in rotation; and retention means for axially retaining the lead screw, which means hold a bearing of the lead screw captive in an axial direction; wherein the retention means are arranged to retain the bearing of the lead screw with axial clearance suitable for absorbing movements imparted to the rod relative to the cylinder.

摘要翻译： 本发明涉及一种伸缩式致动器，其包括：具有用于将其联接到第一外部元件的装置的气缸; 杆，其安装成沿着滑动轴线可伸缩地在所述气缸内滑动，并且包括用于将其联接到第二外部元件的装置; 螺杆，其被安装成围绕滑动轴线旋转并且在所述杆内延伸以与固定到所述杆的螺母配合，使得旋转所述导螺杆导致所述杆滑动; 用于驱动导螺杆旋转的驱动装置; 以及用于轴向保持所述导螺杆的保持装置，所述保持装置将所述导螺杆的轴承沿轴向夹持; 其中所述保持装置被布置成保持所述导螺杆的轴承具有适于吸收相对于所述气缸的所述杆的运动的轴向间隙。