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    • 1. 发明授权
    • Pneumatically operated screw driver
    • 气动螺丝刀
    • US5231902A
    • 1993-08-03
    • US893000
    • 1992-06-03
    • Akira UnoYasuyuki HiranoSatoshi KunoIsamu TanjiYasuki Ohmori
    • Akira UnoYasuyuki HiranoSatoshi KunoIsamu TanjiYasuki Ohmori
    • B25B21/00B25B23/04
    • B25B21/00B25B23/045
    • A pneumatically operated screw driver having a pneumatically operated rotor rotatably supported in an outer frame. The rotor is only rotatable about its axis. A moving unit is slidably disposed within the rotor. The moving unit has an upper piston and is axially movable upon application of pneumatic pressure to the upper piston. The moving unit is also rotatable about its axis because of spline connection with the rotor. A valve is disposed for selectively applying the pneumatic pressure to the piston and to the rotor. Upon application of the pneumatic pressure, the moving unit is moved downwardly, and the pneumatic pressure is then introduced into the rotor for rotating the same. The rotation of the rotor is transmitted to the moving unit. The valve closes a fluid passage directing to the piston and to the rotor when the moving unit has the lowermost position.
    • 一种气动螺丝刀,其具有可旋转地支撑在外框架中的气动转子。 转子只能围绕其轴线旋转。 移动单元可滑动地设置在转子内。 移动单元具有上活塞并且当向上活塞施加气动压力时可轴向移动。 由于与转子的花键连接,移动单元也可围绕其轴线旋转。 阀被设置用于选择性地将气动压力施加到活塞和转子。 在施加气动压力时,移动单元向下运动,然后气动压力被引入转子以使其旋转。 转子的旋转传递到移动单元。 当移动单元具有最低位置时,阀关闭指向活塞和转子的流体通道。
    • 3. 发明授权
    • Pneumatic fastener driving tool
    • 气动紧固件驱动工具
    • US5135152A
    • 1992-08-04
    • US447495
    • 1989-12-07
    • Akira UnoIsamu TanjiKaoru IchikawaSueji Tachihara
    • Akira UnoIsamu TanjiKaoru IchikawaSueji Tachihara
    • B25C1/00B25C1/04
    • B25C1/005B25C1/045
    • A pneumatic fastener driving tool includes a main valve operable to cause compressed air to be alternately introduced into and discharged from the upper piston chamber, a first passage leading the compressed air into the main valve chamber, a repeat valve disposed in the first passage for opening and closing the same, and a second passage extending between the lower piston chamber and a repeat valve chamber in which the repeat valve is reciprocably received. With this construction, the repeat valve is reciprocally movable in response to a change of pressure in the lower piston chamber to cause the main valve to reciprocate, thereby reciprocating the piston repeatedly. Since the reciprocating fastener driving movement of the piston is directly related to the reciprocating movement of the repeat valve, the fastener driving work can be achieved reliably without causing any operational failure such as a non-load striking.
    • 气动紧固件驱动工具包括主阀,可操作以使压缩空气交替地引入上活塞室和从上活塞室排出,第一通道将压缩空气引导到主阀室中,重复阀设置在第一通道中用于打开 并且关闭其,并且在下活塞室和重复阀室之间延伸的第二通道,其中重复阀可往复运动地接收。 利用这种结构,响应于下活塞室中的压力变化,重复阀可以往复运动,以使主阀往复运动,从而使活塞反复往复运动。 由于活塞的往复式紧固件驱动运动与重复阀的往复运动直接相关,所以可以可靠地实现紧固件驱动作业,而不会引起诸如无负载冲击的任何操作故障。
    • 5. 发明授权
    • Pneumatically operated screw driver
    • 气动螺丝刀
    • US6026713A
    • 2000-02-22
    • US106713
    • 1998-06-29
    • Yasuki OhmoriYasuo SasakiMitsuo OguraMichio WakabayashiAkira UnoHiroyasu Ishikawa
    • Yasuki OhmoriYasuo SasakiMitsuo OguraMichio WakabayashiAkira UnoHiroyasu Ishikawa
    • B25B21/02B25B17/00
    • B25B21/023
    • An air motor has a rotor rotatable in response to the pressure of pressurized air. A cylindrical rotary member is connected to the air motor for causing a rotation in synchronism with the rotation of the rotor. A rotary slider is slidable in the axial direction along the inner cylindrical wall of the rotary member. A rotational force transmitting mechanism is provided for transmitting the rotation of the rotary member to the rotary slider. A shaft has one end fixed to the rotary slider and the other end equipped with a piston and a driver bit holder. The rotational and axial motion of the rotary slider is transmitted to a driver bit held in the driver bit holder. And, a cylinder guides the axial slide movement of the piston responsive to the pressure of pressurized air applied on a pressure-receiving surface of the piston.
    • 空气马达具有响应于加压空气的压力而可旋转的转子。 圆柱形旋转构件连接到气动马达,用于与转子的旋转同步地旋转。 旋转滑块可沿旋转构件的内圆筒壁沿轴向滑动。 旋转力传递机构用于将旋转构件的旋转传递到旋转滑块。 轴具有固定到旋转滑块的一端,另一端配备有活塞和驾驶员座架。 旋转滑动件的旋转和轴向运动被传递到保持在驱动器钻头保持器中的驱动器钻头。 并且,气缸响应于施加在活塞的压力接收表面上的加压空气的压力来引导活塞的轴向滑动运动。
    • 7. 发明授权
    • Pneumatically operated screw driver
    • 气动螺丝刀
    • US07370559B2
    • 2008-05-13
    • US10933326
    • 2004-09-03
    • Takeshi KamoAkira UnoMichio WakabayashiHaruhiko OouchiYasuo Sasaki
    • Takeshi KamoAkira UnoMichio WakabayashiHaruhiko OouchiYasuo Sasaki
    • B25B13/00
    • B25B21/023
    • A pneumatically operated screw driver ensuring a complete return of a piston to its top dead center. The screw driver has a compressed air return chamber for returning the piston to its top dead center by applying a compressed air in the return chamber to the piston. The piston includes a main piston and an auxiliary piston. The main piston is first reaches its bottom dead center, and then the auxiliary piston reaches its bottom dead center whereupon screw driving is terminated. Before the auxiliary piston reaches its bottom dead center, and after the main piston moves past a predetermined position, a compressed air is introduced into the return chamber. After the main piston reaches the bottom dead center, application of the compressed air pressure in the return chamber to the auxiliary piston is prevented.
    • 一种气动螺丝刀,确保活塞完全返回到其上止点。 螺杆驱动器具有压缩空气返回室,用于通过将返回室中的压缩空气施加到活塞将活塞返回到其上止点。 活塞包括主活塞和辅助活塞。 主活塞首先到达其下死点,然后辅助活塞到达其下死点,随后螺丝驱动终止。 在辅助活塞到达其下死点之前,并且在主活塞移动超过预定位置之后,压缩空气被引入到返回室中。 在主活塞到达下死点之后,防止将返回室中的压缩空气压力施加到辅助活塞。