公开(公告)号：US4515303A

公开(公告)日：1985-05-07

申请号：US503176

申请日：1983-06-10

申请人： Fritz Schadlich ,  Werner Rieker ,  Rainer Thaler ,  Klaus Klingenstein

发明人： Fritz Schadlich ,  Werner Rieker ,  Rainer Thaler ,  Klaus Klingenstein

IPC分类号： B25C1/06 ,  B25C1/00 ,  B25C5/02 ,  B25C5/06

CPC分类号： B25C1/06

摘要： To prevent bounce of a hammer or plunger element coupled to an insertion blade of a stapling or nailing gun upon return of the plunger element to rest position by a spring (11), the plunger element (4) is in cup shape, sliding about a hollow cylinder (6) which is vented to ambient air (8) at one end, but closed at its other end by a flap-type check valve (9). Upon downward movement of the plunger element, for example under electromagnetic force of a solenoid (2), air can flow freely from the vent opening (8) into the hollow interior and through the then open check valve (9); upon return movement under force of a spring (11), the flap valve (9) will close, however, thus forming an air cushion or air damper and preventing rapid, uncontrolled return of the plunger element to rest position, due to an air throttling path (19) between the outside of the hollow cylinder and the inner surface of the plunger element (4), said air throttling path being defined by the operating clearance between the plunger (4) and the hollow cylinder (6). The hollow cylinder (6) may be constructed as a guide element, unitary with the valve, and made of plastic, the valve being secured by a living hinge to the remainder of the hollow cylinder.

摘要翻译： 为了防止当弹簧（11）将柱塞元件返回到静止位置时，联接到装订或钉枪的插入刀片的锤或柱塞元件的弹跳，柱塞元件（4）处于杯状， 中空圆筒（6），其在一端被排放到环境空气（8），但在其另一端通过翼片式止回阀（9）封闭。 当柱塞元件向下移动时，例如在螺线管（2）的电磁力作用下，空气可以从通气孔（8）自由地流入中空的内部并通过打开的止回阀（9）。 然而，在弹簧（11）的作用下的返回运动时，瓣阀（9）将闭合，从而形成气垫或空气阻尼器，并且防止柱塞元件由于空气节流而快速，不受控制地返回到静止位置 在空心圆筒的外侧和柱塞元件（4）的内表面之间的路径（19），所述空气节流路径由柱塞（4）和中空圆柱体（6）之间的操作间隙限定。 中空圆柱体（6）可以构造为与阀一体并且由塑料制成的引导元件，阀由活动铰链固定到中空圆柱体的其余部分。