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公开(公告)号：EP0008574B1
公开(公告)日：1983-04-06
申请号：EP79900045.0
申请日：1979-01-10
申请人： NILSSON, Göran , EDSTRÖM, Kjell , WIKLUND, Henry
发明人： NILSSON, Göran , EDSTRÖM, Kjell , WIKLUND, Henry
摘要： An impact element having the effect of elongating the pulse of force in impact tools and devices for chipping, hammering and similar operations, consisting of an element (8) which, for generating the striking motion, is axially moveable as a whole and comprises a driving mass (16) intended to be actuated by a propelling force, and a striking mass (17) located in front thereof relative to the direction of striking, which masses possess a limited freedom of axial movement with respect to each other in that they are coupled together by a stiff spring arrangement, e.g. cup washers (15), extremely hard plastics or gas cushions.
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公开(公告)号：EP0668812A1
公开(公告)日：1995-08-30
申请号：EP94901100.0
申请日：1993-11-09
申请人： NILSSON, Göran , BERG, Roland , EDSTRÖM, Kjell
发明人： NILSSON, Göran , BERG, Roland , EDSTRÖM, Kjell
IPC分类号： B23D51
CPC分类号： B23D51/18
摘要： A pressure medium operated reciprocating impact mechanism has at least one working member (7) and at least one stop member (15), which are axially movable with respect to each other, and a working chamber (22) for pressure medium is arranged in at least one of them and is opened towards the other member. One of said members has an opening (39) emerging into the working chamber for feeding pressure medium to the working chamber. The impact mechanism comprises an arrangement (21) for sealing the working chamber in the position in which said members are brought most together and allow pressure medium to escape out of the working chamber when a predetermined relative position of said members is reached during their movement apart. Furthermore, the impact mechanism comprises means (34, 35, 36) adapted to be actuated by the relative movement of the stop member and the working member and by this actuation during the movement of these members apart arrive to a state in which they obstruct the supply of compressed medium to the chamber and allow said supply during the movement of these members towards each other.
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