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公开(公告)号：US10350742B2
公开(公告)日：2019-07-16
申请号：US14403199
申请日：2013-04-24
申请人： Robert Bosch GmbH
发明人： Rainer Nitsche , Antoine Vandamme , Thomas Winkler , Helge Sprenger , Haris Hamedovic , Wolfgang Fischer , Christian Bertsch , Mario Eduardo Vega Zavala , Ulli Hoffmann , Thilo Henke , Achim Duesselberg
摘要： Percussion unit, especially for a rotary hammer and/or percussion hammer, comprising a control unit which is designed for controlling a pneumatic percussion mechanism. According to the disclosure, the control unit comprises at least one load estimation device.
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公开(公告)号：US10328560B2
公开(公告)日：2019-06-25
申请号：US15050844
申请日：2016-02-23
申请人： Brian Romagnoli
发明人： Brian Romagnoli
摘要： The present invention provides a multi-mode drive mechanism. The multi-mode drive mechanism may be employed, for example, in a power tool, for driving a chuck supporting an end effector, such as a drill bit or spiral cut bit, for acting on a work surface. For example, when employed in a power tool, the mechanism can generate rotating, reciprocating, or simultaneous rotating and reciprocating motion. Cutting with simultaneous rotational and reciprocating motion lessens the potential for undesired walking or wandering of the cutting bit by actively removing debris from the cut. Additionally, multi-mode drive mechanisms provide increased functionality in a single tool to accommodate a variety of situations and materials. One aspect of the invention provides a multi-mode drive mechanism including: an input shaft, a reciprocating assembly, an output shaft, a reciprocating block, and a shift collar. The input shaft terminates in an input external spur gear.
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公开(公告)号：US10328559B2
公开(公告)日：2019-06-25
申请号：US14959371
申请日：2015-12-04
申请人： BLACK & DECKER INC.
发明人： Markus Rompel , Rafael Glottschling
摘要： A drill includes a housing and a motor having a drive spindle. An output spindle is capable of being rotationally driven by the drive spindle via a torque clutch. The drill further includes a tangential impact mechanism for superimposing tangential impacts onto the output spindle when activated. The tangential impact mechanism includes a sleeve rotatably mounted on the output spindle, and an anvil rotatably mounted onto the output spindle. The sleeve is rotationally driven by the drive spindle via a gear system at a first rotational rate when the torque clutch is not slipping and at a second rotational rate when the torque clutch is slipping.
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公开(公告)号：US20190091819A1
公开(公告)日：2019-03-28
申请号：US16133887
申请日：2018-09-18
申请人： MAKITA CORPORATION
发明人： Keita MORI , Kiyonobu YOSHIKANE
摘要： A dust collector includes a body configured to be removably attached to a lower side of a tool body of a drilling tool, a dust storing part to be disposed on a lower side of the body, a sliding part having a suction port and held by the body so as to be slidable in a front-rear direction, a dust transfer passage extending within the sliding part and connecting the suction port and an inlet of the dust storing part, and a tool connection passage disposed within an internal space of the body and configured to connect an outlet of the dust storing part and an inlet of the tool body of the drilling tool. The dust storing part includes the inlet, a filter, a dust storing space and the outlet. The filter is disposed forward of the inlet of the dust storing part.
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公开(公告)号：US20190070719A1
公开(公告)日：2019-03-07
申请号：US16121981
申请日：2018-10-18
摘要： An electric hammer comprising an electric motor, a spindle coupled to the electric motor and adapted to be driven by the electric motor, an impacting member adapted to be coupled to the spindle and driven by the spindle, and a direction changing device adapted to be coupled with the impacting member. The direction changing device changes the direction of movement of the impacting member such that the kinetic energy of the impacting member is provided to an energy storage device for accumulation after the change in the direction of movement. The energy storage device is adapted to return the accumulated energy to the impacting member such that the latter generates an impacting force to an output member.
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公开(公告)号：US20190061131A1
公开(公告)日：2019-02-28
申请号：US16057411
申请日：2018-08-07
发明人： Markus Bindhammer
摘要： A hand-held electric hammer includes a handle arrangement on a tool carrier shank in which a striking mechanism actuated by an electric motor is accommodated and at the lower end of which a tool holder is arranged, which is suitable for receiving a tool attachment in the form of a spade blade, a demolition chisel, or a PVC scraper. The handle arrangement is designed as a T-shaped T-handle seated on the tool carrier shank, so that on both sides of the tool carrier shank there are two handles for both a left and a right hand of a user, whereby in the lower half of the tool carrier shank an additional handle stub is attached protruding in parallel with the T-handle from the tool carrier shank, which allows the electric hammer to be gripped with one hand on the T-handle and with the other hand on the additional handle stub.
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公开(公告)号：US10195755B2
公开(公告)日：2019-02-05
申请号：US14921474
申请日：2015-10-23
发明人： James O. Myrhum, Jr. , Troy C. Thorson , Jeremy R. Ebner , Sean T. Kehoe , Joseph H. Ellice , Jeffrey S. Holly
IPC分类号： B26F1/34 , B26D5/12 , B25B27/14 , B21D28/34 , B21D28/00 , B25B27/10 , B25B21/00 , B21J15/20 , B25D16/00 , B25F5/00 , B21D28/24 , B25B7/12 , F15B15/18
摘要： A hand-held knockout driver includes a main housing having a handle portion, a motor positioned within the main housing, a hydraulic assembly driven by the motor and including a reservoir containing hydraulic fluid, a secondary housing coupled to the main housing and defining a bore therein, a working piston moveable within the bore between a rest position and an actuated position, and a work zone defined between the secondary housing and the working piston into which pressurized hydraulic fluid discharged from the hydraulic assembly is received. One unit of fluid is added to the work zone to move the working piston from the rest position to the actuated position. The reservoir has a fill capacity no greater than about 1.5 units of fluid.
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公开(公告)号：US10183391B2
公开(公告)日：2019-01-22
申请号：US14993251
申请日：2016-01-12
申请人： Robert Bosch GmbH
发明人： Joachim Hecht , Heiko Roehm , Tobias Herr
摘要： A hand-held power tool, in particular an impact drill driver, has a gearbox assemblage, a hammer impact mechanism, and a tool spindle. The hammer impact mechanism includes a striker that at least partly surrounds the tool spindle in at least one plane.
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公开(公告)号：US20180361554A1
公开(公告)日：2018-12-20
申请号：US16062903
申请日：2016-12-08
申请人： Robert Bosch GmbH
发明人： Andre Ullrich , Christian Lang , Andreas Schlegel
摘要： A portable machine tool, particularly a hammer drill and/or chisel hammer, has a length, a width, a height and a mass. The portable machine tool has at least one energy storage unit that has a charge carrier capacity and a quick-change tool holder for quick-change tools with a shaft diameter of less than 12 mm. A product formed from the length, the width, the height, the mass and the inverse of the charge carrier capacity is less than 1301 cm3 kg A h−1.
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公开(公告)号：US20180361553A1
公开(公告)日：2018-12-20
申请号：US15781812
申请日：2016-12-08
申请人： Robert Bosch GmbH
发明人： Thomas Brinkmann , Lars Schmid , Pascal Schmitz , Hardy Schmid , Patrick Heinen , Jan Koalick , Daniel Hinz
摘要： A hand-held power tool device, in particular a hammer drill and/or chisel hammer device, includes at least one operating element and at least one locking unit. The at least one locking unit includes at least one locking element and at least one controllable actuator element. The at least one locking element can be moved from at least one storage position into at least one locking position, and vice versa, and locks the operating element in at least one operating state in the locking position. The at least one controllable actuator element influences motion of the locking element.
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