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公开(公告)号：US10821589B2
公开(公告)日：2020-11-03
申请号：US16061377
申请日：2016-12-06
摘要： A percussion mechanism contains a guide tube, an exciter piston, a hammer, a pneumatic chamber for coupling the hammer to the motion of the exciter piston, a striker, and a seat for the striker. The hammer has a striking point, defined by a striking surface of the striker when the striker lies against the seat. A check valve has an outlet opening and a closing mechanism for closing the check valve against an air flow from the interior of the guide tube. The outlet opening is arranged in such a way that the outlet opening is closed by the hammer during striking operation and otherwise is open.
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公开(公告)号：US20130277077A1
公开(公告)日：2013-10-24
申请号：US13865729
申请日：2013-04-18
发明人： Markus Hartmann , Eduard Pfeiffer
CPC分类号： B25D17/245 , B25D9/06 , B25D17/06 , B25D17/24 , B25D2211/068 , B25D2217/0019 , B25D2217/0023 , B25D2250/185 , B25D2250/345
摘要： A hand-held machine tool includes a tool accept for mounting a chiseling tool on an operating axis. A pneumatic hammer mechanism includes a hammer mobile on an operating axis, an exciter, and a pneumatic chamber sealed by an exciter and the hammer, which couples the movement of the exciter to the hammer. The exciter is driven by a motor and moves back and forth between a frontal dead point distant from the tool and a dead point near the tool. A damper device includes a supercharger and a controlled outlet valve. The controlled outlet valve allows air to flow from the supercharger into the pneumatic chamber when the exciter is in the proximity of the dead point distant from the tool.
摘要翻译： 手持式机床包括用于在操作轴上安装凿子工具的工具。 气动锤机构包括在操作轴上移动的锤，激励器和由激励器和锤密封的气动室，其将激励器的运动耦合到锤。 励磁机由电动机驱动，并在远离工具的正面死点和工具附近的死点之间来回移动。 阻尼器装置包括增压器和受控出口阀。 当激励器处于远离工具的死点附近时，受控的出口阀允许空气从增压器流入气动室。
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公开(公告)号：US11123853B2
公开(公告)日：2021-09-21
申请号：US16324233
申请日：2017-07-31
摘要： The A hand-held power tool includes a tool holder 2 for holding a tool and a pneumatic striking mechanism for periodically generating impacts on the tool held in the tool holder. The striking mechanism includes a guiding tube, an exciter piston, a striker, a pneumatic chamber closed by the exciter piston and the striker in the guiding tube, and a compensating opening in the guiding tube for ventilating the pneumatic chamber. A cap covers the compensating opening on an outside of the guiding tube. The cap is open in an opening direction which is largely tangential to the guiding tube.
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公开(公告)号：US20130284473A1
公开(公告)日：2013-10-31
申请号：US13865747
申请日：2013-04-18
发明人： Markus Hartmann , Eduard Pfeiffer
IPC分类号： B25D17/24
CPC分类号： B25D17/245 , B25D11/125 , B25D2211/068 , B25D2250/195 , B25D2250/221
摘要： A hand-held machine tool includes a tool accept for mounting a chiseling tool on an operating axis. A pneumatic hammer mechanism includes an exciter, driven back and forth by a motor about a stroke between a dead point distant from the tool and a dead point near the tool, a hammer moved back and forth on the operating axis between a reversal point distant from the tool and a point of impact, and a pneumatic chamber sealed by the exciter and the hammer, which couples the movement of the hammer to the movement of the exciter. A damping device increases the pressure in the pneumatic chamber when the exciter during its motion in the direction to the dead point distant from the tool has approached to less than half the stroke to the dead point distant from the tool.
摘要翻译： 手持式机床包括用于在操作轴上安装凿子工具的工具。 气动锤机构包括一个激励器，由马达围绕在远离工具的死点与工具附近的死点之间的行程来回驱动，锤在操作轴上来回移动， 工具和冲击点，以及由激励器和锤子密封的气动室，其将锤的运动耦合到激励器的运动。 当激励器在其远离工具的死点的方向运动时，减震装置增加了气动室中的压力，其距离工具远离死点的行程的不到一半。
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公开(公告)号：US20160311103A1
公开(公告)日：2016-10-27
申请号：US15105199
申请日：2014-12-09
CPC分类号： B25D17/06 , B25D16/00 , B25D17/24 , B25D17/245 , B25D2217/0015 , B25D2217/0019 , B25D2250/225
摘要： The handheld power tool has a tool receptacle for accommodating a tool on a working axis (11) and an electric motor (5). A pneumatic percussion mechanism (6) has an exciter, which is moved back-and-forth by the motor (5) periodically in parallel to the working axis (11), a striker (14), which is movable on the working axis (11) and is coupled via a pneumatic spring (18) to the exciter, and an anvil (19), which is situated movably on the working axis (11) and is situated downstream from the striker (14) in the percussion direction (12). The anvil (19) has a cylindrical anvil section (22) having a diameter and multiple channels (30) extending over the entire length (31) of the anvil section (22). A cross-sectional area of the anvil section (22) is at most 5% less than a circular area defined by the diameter.
摘要翻译： 手持式电动工具具有用于在工作轴线（11）和电动机（5）上容纳工具的工具插座。 气动冲击机构（6）具有激励器，其通过电动机（5）周期性地平行于工作轴线（11）前后移动，可在工作轴线上移动的撞针（14） 11），并且经由气动弹簧（18）耦合到激励器，以及砧座（19），其被可移动地设置在工作轴线（11）上并且位于冲击方向（12）的下游 ）。 砧座（19）具有圆柱形砧部（22），其具有在砧部（22）的整个长度（31）上延伸的直径和多个通道（30）。 砧部（22）的横截面积比由直径限定的圆形区域少5％以下。
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公开(公告)号：US20130277080A1
公开(公告)日：2013-10-24
申请号：US13864829
申请日：2013-04-17
发明人： Markus Hartmann , Eduard Pfeiffer
IPC分类号： B25D17/24
CPC分类号： B25D17/245 , B25D11/125 , B25D2250/185 , B25D2250/375
摘要： A hand-held power tool has a pneumatic striking mechanism (6). The striking mechanism (6) has a motor-driven exciter (12), a striker (13) and a pneumatic chamber (15) arranged along a working axis (10) between the exciter (12) and the striker (13). At least 20% of the volume of the pneumatic chamber (15) is filled with a monoatomic gas.
摘要翻译： 手持电动工具具有气动打击机构（6）。 打击机构（6）具有电机驱动的激励器（12），沿着激励器（12）和撞针（13）之间的工作轴线（10）设置的撞针（13）和气动室（15）。 至少20％的气动室（15）的体积被单原子气体填充。
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公开(公告)号：US10391621B2
公开(公告)日：2019-08-27
申请号：US15105199
申请日：2014-12-09
摘要： The handheld power tool has a tool receptacle for accommodating a tool on a working axis (11) and an electric motor (5). A pneumatic percussion mechanism (6) has an exciter, which is moved back-and-forth by the motor (5) periodically in parallel to the working axis (11), a striker (14), which is movable on the working axis (11) and is coupled via a pneumatic spring (18) to the exciter, and an anvil (19), which is situated movably on the working axis (11) and is situated downstream from the striker (14) in the percussion direction (12). The anvil (19) has a cylindrical anvil section (22) having a diameter and multiple channels (30) extending over the entire length (31) of the anvil section (22). A cross-sectional area of the anvil section (22) is at most 5% less than a circular area defined by the diameter.
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