公开(公告)号：US08074734B2

公开(公告)日：2011-12-13

申请号：US12404381

申请日：2009-03-16

申请人： Rene Gumpert ,  Heinz-Werner Faatz

发明人： Rene Gumpert ,  Heinz-Werner Faatz

IPC分类号： B25D17/24

CPC分类号： B25D17/24 ,  B25D2211/068 ,  B25D2217/0076 ,  B25D2217/0092 ,  B25D2250/141 ,  B25D2250/221

摘要： A powered hammer is described comprising a housing, a tool holder mounted on the housing, a percussion mechanism arranged within the housing which mechanism includes a ram reciprocating in a longitudinal direction and being adapted to apply impacts on a tool bit supported in the tool holder, a dampening mass which is slidably mounted in the longitudinal direction within the housing, wherein the dampening mass is biased towards a neutral position by a biasing element and wherein the dampening mass may be deflected from the neutral position against the biasing force of the biasing element. The dampening mass is formed of a ferromagnetic or paramagnetic material or comprises a permanent magnet and a solenoid is arranged within housing adjacent to the dampening mass such that the solenoid applies a force in the longitudinal direction on the dampening mass when being in the neutral position if a current is flowing through the solenoid.

摘要翻译： 描述了一种动力锤，其包括壳体，安装在壳体上的工具夹具，布置在壳体内的冲击机构，该机构包括沿纵向方向往复运动的冲头，并且适于对支撑在工具夹具中的工具头施加冲击， 阻尼物质，其沿纵向方向可滑动地安装在壳体内，其中所述阻尼物质通过偏压元件偏压到中立位置，并且其中所述阻尼物质可以克服所述偏置元件的偏置力而从所述中立位置偏转。 阻尼物质由铁磁性或顺磁性材料形成或包括永磁体，并且螺线管布置在与阻尼物质相邻的壳体内，使得当处于中间位置时，螺线管在纵向上施加在阻尼物质上的力，如果 电流正在流过螺线管。

公开(公告)号：US20240149419A1

公开(公告)日：2024-05-09

申请号：US18380429

申请日：2023-10-16

申请人： MAKITA CORPORATION

发明人： Yoshitaka MACHIDA ,  Yusuke TAKANO ,  Makoto CHIKARAISHI

IPC分类号： B25D11/06 ,  B25D11/04 ,  B25D17/20 ,  B25F5/00

CPC分类号： B25D11/064 ,  B25D11/04 ,  B25D17/20 ,  B25F5/006 ,  B25D2211/003 ,  B25D2217/0076 ,  B25D2250/005 ,  B25D2250/121 ,  B25D2250/365 ,  B25D2250/375

摘要： A reciprocating tool includes a motor, a motion converting mechanism, a body housing, an inner housing, a support body, and a counterweight. The motion converting mechanism is operably coupled to a motor shaft and is configured to convert rotation into a linear reciprocating motion along a driving axis. The inner housing is within the body housing and houses at least a portion of the motion converting mechanism. The support body is originally separate from the inner housing and is attached to the inner housing in the body housing. The counterweight is operably coupled to the motion converting mechanism and is configured to be driven by the motion converting mechanism. The counterweight is supported by the support body to be pivotable around a pivot axis that extends in a direction orthogonal to the driving axis. At least a portion of the counterweight is housed in the inner housing.

公开(公告)号：US11642769B2

公开(公告)日：2023-05-09

申请号：US17668036

申请日：2022-02-09

申请人： MAKITA CORPORATION

发明人： Kiyonobu Yoshikane ,  Yoshitaka Machida ,  Taro Hisano ,  Kazuki Nakagawa

IPC分类号： B25D16/00 ,  B25F5/02 ,  B25D17/24 ,  B25F5/00 ,  B25D17/00

CPC分类号： B25D16/00 ,  B25D17/24 ,  B25F5/02 ,  B25D17/00 ,  B25D2211/003 ,  B25D2211/006 ,  B25D2211/061 ,  B25D2211/068 ,  B25D2216/0023 ,  B25D2217/0073 ,  B25D2217/0076 ,  B25D2217/0092 ,  B25D2250/121 ,  B25D2250/245 ,  B25D2250/331 ,  B25F5/006

摘要： A movable support at least partially supports a final output shaft and a driving mechanism, and is integrally movable relative to a housing in an axial direction of a driving axis. A biasing member biases the movable support toward a front side in the axial direction. A first guide shaft extends in the axial direction and slidably guides the movement of the movable support in the axial direction. At least one intermediate shaft rotates in response to rotation of a motor shaft and transmit power of the motor to the driving mechanism. At least one bearing supports an end portion of the at least one intermediate shaft is located in the front side in the axial direction. A single metal support is immovable relative to the housing and supports the at least one bearing. The single metal support has a first hole for partially receiving the first guide shaft.

公开(公告)号：US20090236113A1

公开(公告)日：2009-09-24

申请号：US12404381

申请日：2009-03-16

申请人： Rene GUMPERT ,  Heinz-Werner FAATZ

发明人： Rene GUMPERT ,  Heinz-Werner FAATZ

IPC分类号： B25D17/24

CPC分类号： B25D17/24 ,  B25D2211/068 ,  B25D2217/0076 ,  B25D2217/0092 ,  B25D2250/141 ,  B25D2250/221

摘要： A powered hammer is described comprising a housing, a tool holder mounted on the housing, a percussion mechanism arranged within the housing which mechanism includes a ram reciprocating in a longitudinal direction and being adapted to apply impacts on a tool bit supported in the tool holder, a dampening mass which is slidably mounted in the longitudinal direction within the housing, wherein the dampening mass is biased towards a neutral position by a biasing element and wherein the dampening mass may be deflected from the neutral position against the biasing force of the biasing element. The dampening mass is formed of a ferromagnetic or paramagnetic material or comprises a permanent magnet and a solenoid is arranged within housing adjacent to the dampening mass such that the solenoid applies a force in the longitudinal direction on the dampening mass when being in the neutral position if a current is flowing through the solenoid.

摘要翻译： 描述了一种动力锤，其包括壳体，安装在壳体上的工具夹具，布置在壳体内的冲击机构，该机构包括沿纵向方向往复运动的冲头，并且适于对支撑在工具夹具中的工具头施加冲击， 阻尼物质，其沿纵向方向可滑动地安装在壳体内，其中所述阻尼物质通过偏压元件偏压到中立位置，并且其中所述阻尼物质可以克服所述偏置元件的偏置力而从所述中立位置偏转。 阻尼物质由铁磁性或顺磁性材料形成或包括永磁体，并且螺线管布置在与阻尼物质相邻的壳体内，使得当处于中间位置时，螺线管在纵向上施加在阻尼物质上的力，如果 电流正在流过螺线管。