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    • 4. 发明申请
    • ONE-SIDED PNEUMATIC IMPACT TOOL WITH IDLING POSITION
    • 闲置状态双面空气弹簧SCHLAGWERK
    • WO1998058773A2
    • 1998-12-30
    • PCT/EP1998003633
    • 1998-06-16
    • WACKER-WERKE GMBH & CO. KGSCHMID, Wolfgang
    • WACKER-WERKE GMBH & CO. KG
    • B25D00/00
    • B25D11/125B25D11/005
    • The invention relates to a one-sided pneumatic impact tool in which a percussion piston (11) is guided inside a hollow driving piston (8), which in turn can be axially displaced in an impact tool housing (7). A volume of air enclosed by the driving piston (8) and the percussion piston (11) can be brought into connection with a crank chamber (7a) and an impacting chamber (7b) via idling openings (14), a recess (15) and longitudinal channels (16). This equalizes the pressure so that the impact tool shifts into an idling position. The timing of the shift into the idling position and the resumption of impaction can be precisely set by means of a control edge (17) fixed to the housing. The impact tool provided for by the invention is characterized by good starting characteristics and reliable change-over to idling.
    • 在单面空气弹簧冲击机构,冲击活塞(11)在一个中空活塞传动(8)被执行时,(7)再次处于冲击机构壳体沿轴向移动。 一驱动活塞(8)和所述冲击活塞(11)封闭的空气体积可以空闲开口(14),凹部(15)和纵向通道(16)被带到与一个曲柄室(7a)的通信和一个吹腔室(7b)中,由此 压力平衡发生并通过在怠速运转的冲击机构。 由壳体固定的控制边缘的装置(17)是过渡到空闲和恢复打击操作的可精确地设定时间,从而,本发明的冲击机构是由良好的启动动作和安全过渡到空闲区分。