公开(公告)号：US4697302A

公开(公告)日：1987-10-06

申请号：US846746

申请日：1986-04-01

Applicant: Sun Yuenian

Inventor： Sun Yuenian

IPC: E05F1/06 ,  E05F1/12 ,  E05F3/10 ,  E05F3/12 ,  E05F3/14

CPC classification number: E05F3/10 ,  E05F1/1223 ,  E05F3/12 ,  E05F1/066 ,  E05Y2201/638 ,  E05Y2201/696 ,  E05Y2900/132 ,  E05Y2900/148 ,  Y10S16/09 ,  Y10T16/2766 ,  Y10T16/2774 ,  Y10T16/2788 ,  Y10T16/61

Abstract: An automatic door/window closing device has a center shaft provided with V-shaped spiral channels to a base such as its surface and secured to a base such as the ground, a floating piston which forms a screw pair with the shaft by engagement of steel balls in the spiral channels, a housing with a flange which is secured to the door or window, a spring for providing the force to automatically close the door, and a cover. This device has a simple structure and is very light and which permits a door to be opened in both directions. After opening, the door will automatically close, and it can be also be damped for slowly closing the door. The door will rest when it opens to 90.degree..

Abstract translation: 自动门/关闭装置具有中心轴，其具有V形螺旋通道，其基部如其表面并且固定到诸如地面的基座，浮动活塞，其通过钢的接合与轴形成螺杆对 螺旋通道中的球，具有固定到门或窗口的凸缘的壳体，用于提供力以自动关闭门的弹簧和盖。 该装置具有简单的结构，并且非常轻，并且允许门在两个方向上打开。 打开后，门将自动关闭，也可以缓慢关闭门。 当门打开90度时，门就会休息。