公开(公告)号：US3732881A

公开(公告)日：1973-05-15

申请号：US3732881D

申请日：1970-02-16

申请人： ASAHI KOGYO CO LTD

发明人： HIRAI M

IPC分类号： A45B25/06 ,  A45B25/16

CPC分类号： A45B25/16

摘要： A self-opening umbrella utilizing tension springs for selfopening operation is disclosed and comprises a rod or stick with a crown secured on the top thereof, a plurality of roof ribs having their respective base ends thereof pivotably mounted to the periphery of the crown, a slider member roof rib, each slider member being slidable along its associated roof rib, a lower sliding sleeve slidably mounted around the rod or stick and including connection means for connecting the end of an associated tension spring, an upper sliding sleeve slidably mounted around the rod or stick and above the lower sliding sleeve, a brace member associated with each roof rib and pivotably connected at one end thereof to the slider member and having its otherwise free end pivotably connected to the upper sliding sleeve, and an axial compression spring disposed between the upper sliding sleeve and the connection means of the lower sliding member, the tension spring being connected at its otherwise free end to an associated brace and at a point near the associated slider member, whereby maintaining the umbrella in an open condition is attained utilizing little force and, hence, the force necessary for closing the umbrella is reduced.

摘要翻译： 公开了一种利用拉伸弹簧进行自开操作的自开式伞，其中包括具有固定在其顶部上的冠部的杆或杆，多个顶肋，其各自的基端可枢转地安装在冠部的周边上， 滑动构件屋顶肋，每个滑动构件可沿其相关联的车顶肋滑动;下滑动套筒，可滑动地安装在所述杆或杆周围，并且包括用于连接相关联的拉伸弹簧的端部的连接装置， 杆或杆和下滑动套管上方的支撑构件，与每个屋顶肋相关联并且在其一端可枢转地连接到滑动构件并具有可枢转地连接到上滑动套筒的其它自由端的支撑构件，以及设置在 上部滑动套筒和下部滑动构件的连接装置，拉伸弹簧在其另外的自由端连接 到相关联的支架并且在相关联的滑动构件附近的点处，由此利用很小的力来实现将伞保持在打开状态，因此减小了关闭伞所需的力。