公开(公告)号：US11904449B2

公开(公告)日：2024-02-20

申请号：US17366159

申请日：2021-07-02

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka Machida ,  Taro Hisano

IPC: B25D17/24 ,  B25D16/00

CPC classification number: B25D17/24 ,  B25D16/006 ,  B25D2216/0084 ,  B25D2250/121 ,  B25D2250/201 ,  B25D2250/221 ,  B25D2250/265 ,  B25D2250/371

Abstract: A work tool includes a motor, a driving mechanism, a body housing and a handle. The driving mechanism is configured to perform an operation of linearly reciprocating the tool accessory along a driving axis extending in a front-rear direction. The handle includes a grip part extending substantially in an up-down direction, and a battery-mounting part provided on a lower side of the grip part. An upper end portion of the handle is connected to a rear end portion of the body housing via an elastic member so as to be movable relative to the body housing. A lower end portion of the handle is connected to the rear end portion of the body housing so as to be rotatable relative to the body housing, around a rotation axis extending in a left-right direction. The rotation axis is located on a lower side of the battery-mounting part.

公开(公告)号：US11648655B2

公开(公告)日：2023-05-16

申请号：US17346800

申请日：2021-06-14

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Jonathan E. Abbott ,  Timothy R. Obermann ,  John S. Dey, IV ,  Benjamin R. Suhr ,  Richard A. Ryer ,  Maxwell L. Merget ,  Douglas R. Fieldbinder

IPC: B25D16/00 ,  H02K11/21 ,  B25F5/00 ,  B25F5/02 ,  H02K7/14 ,  H02K7/00 ,  B25B21/02

CPC classification number: B25F5/001 ,  B25B21/02 ,  B25D16/00 ,  B25F5/00 ,  B25F5/02 ,  H02K7/003 ,  H02K7/145 ,  H02K11/21 ,  B25D2250/201 ,  B25D2250/205 ,  B25D2250/221 ,  B25D2250/265

Abstract: Kickback control methods for power tools. One power tool includes a movement sensor configured to measure an angular velocity of the housing of the power tool, and an orientation sensor configured to measure an orientation of the housing. The power tool includes an electronic processor coupled to a switching network and a trigger. To implement the kickback control, the electronic processor is configured to receive measurements of the angular velocity of the housing, receive measurements of the orientation of the housing, determine a binding condition of the power tool based on the measurements of the angular velocity and the measurements of orientation, and control the switching network to cease driving of the brushless DC motor.

公开(公告)号：US20180001462A1

公开(公告)日：2018-01-04

申请号：US15532632

申请日：2015-12-01

Applicant: Hilti Aktiengesellschaft

Inventor： Rainer ONTL ,  Frank KOHLSCHMIED ,  Christoph DIEING

IPC: B25D17/24 ,  B25D16/00

CPC classification number: B25D17/24 ,  B25D11/125 ,  B25D16/00 ,  B25D2211/068 ,  B25D2217/0092 ,  B25D2250/005 ,  B25D2250/175 ,  B25D2250/201 ,  B25D2250/221 ,  F16F7/1005 ,  F16F7/104

Abstract: A hand-held power tool has a tool holder for holding a tool along a working axis. A hammer mechanism has a striker that is moved periodically at an impact rate along the working axis between a turning point in the proximity of the tool and a turning point remote from the tool. A drive control of the hammer mechanism sets the impact rate to a set point value. A vibration absorber has an oscillator that moves along the working axis about a resting position and one or multiple springs that drive the oscillator back into the resting position. A first sensor is used to determine a phase of the motion of the striker. A sensor is used to determine a first phase of a compression point of the hammer mechanism. Another sensor is used to determine a second phase of a turning point in the proximity of the tool, of the hammer mechanism. A damping controller adapts the set point value in such a way that a phase difference between the first phase and the second phase is less than a threshold value.

公开(公告)号：US20170320205A1

公开(公告)日：2017-11-09

申请号：US15528216

申请日：2015-11-17

Applicant: Hilti Aktiengesellschaft

Inventor： Roland Schaer ,  Antonios Draganis ,  Peter Hricko ,  Franz Moessnang ,  Erwin Manschitz

IPC: B25D16/00

CPC classification number: B25D16/00 ,  B23Q11/0092 ,  B23Q11/04 ,  B23Q17/22 ,  B25D11/005 ,  B25D16/006 ,  B25D2211/068 ,  B25D2250/035 ,  B25D2250/165 ,  B25D2250/201 ,  B25D2250/221 ,  B25F5/001

Abstract: The control method for a hammer drill (1) provides the following steps. During basic operation, the motor (5) rotates at an operating speed for the drilling operation with chiseling action in order to rotationally drive the tool holder (2) and to drive the hammer mechanism (6) with a nominal striking power. The torque coupling (21) is monitored with the aid of a sensor (26). If a disengagement of the torque coupling (21) occurs, the striking power of the hammer mechanism (6) is reduced to below 10% of the nominal striking power during a disengagement of the torque coupling (21), and the torque coupling (21) is driven. When the disengagement of the torque coupling (21) ends, the striking power of the hammer mechanism (6) is increased to the nominal striking power and the torque coupling (21) is driven at the operating speed for the drilling operation with chiseling action.

公开(公告)号：US20150202758A1

公开(公告)日：2015-07-23

申请号：US14403724

申请日：2013-05-06

Applicant: Rainer Nitsche ,  Christian Bertsch ,  Carsten Diem ,  Achim Duesselberg ,  Matthias Tauber ,  Helge Sprenger

Inventor： Rainer Nitsche ,  Christian Bertsch ,  Carsten Diem ,  Achim Duesselberg ,  Matthias Tauber ,  Helge Sprenger

IPC: B25D11/00 ,  B25D11/12 ,  B25D16/00

CPC classification number: B25D11/005 ,  B25D11/125 ,  B25D16/006 ,  B25D2211/003 ,  B25D2211/068 ,  B25D2250/131 ,  B25D2250/145 ,  B25D2250/201 ,  B25D2250/221

Abstract: A percussion unit, especially for a rotary hammer and/or percussion hammer, includes a control unit that is configured for open-loop and/or closed loop control of a drive unit and/or a pneumatic percussion mechanism. The percussion unit further includes a pressure sensor unit that is configured to measure a pressure curve in order to detect at least one state of the percussion mechanism.

Abstract translation: 特别是用于旋转锤和/或敲击锤的冲击单元包括被配置为用于驱动单元和/或气动冲击机构的开环和/或闭环控制的控制单元。 冲击单元还包括压力传感器单元，其被配置为测量压力曲线以便检测冲击机构的至少一个状态。

公开(公告)号：US08430180B2

公开(公告)日：2013-04-30

申请号：US12358761

申请日：2009-01-23

Applicant: Rene Gumpert ,  Horst Grossman ,  Bruno Ruethers

Inventor： Rene Gumpert ,  Horst Grossman ,  Bruno Ruethers

IPC: E02D3/068

CPC classification number: B25D16/006 ,  B25D16/003 ,  B25D17/043 ,  B25D17/24 ,  B25D2211/061 ,  B25D2250/065 ,  B25D2250/155 ,  B25D2250/165 ,  B25D2250/201 ,  B25F5/001 ,  B25F5/006 ,  B25F5/026 ,  H01C10/14

Abstract: A speed adjustment mechanism for a power tool is disclosed. The mechanism includes a support, a first toothed gear for rotation by means of an adjustment dial, and a second toothed gear rotatable by means of the first toothed gear and connected to a potentiometer which is connected to a speed control circuit. Limited movement of the first and second toothed gears relative to each other is possible to reduce transmission of impacts from the adjustment dial to the speed control circuit.

Abstract translation: 公开了一种用于电动工具的速度调节机构。 该机构包括支撑件，用于通过调节转盘旋转的第一齿轮和通过第一齿轮可旋转并连接到连接到速度控制电路的电位器的第二齿轮。 第一齿轮和第二齿轮相对于彼此的有限运动可以减小从调节转盘到速度控制电路的冲击传递。

公开(公告)号：US20110284255A1

公开(公告)日：2011-11-24

申请号：US13147492

申请日：2010-02-01

Applicant: Takahiro Ookubo ,  Kazutaka Iwata

Inventor： Takahiro Ookubo ,  Kazutaka Iwata

IPC: B25D11/00 ,  B23B45/02

CPC classification number: B23B45/02 ,  B25D16/006 ,  B25D2211/061 ,  B25D2222/72 ,  B25D2250/055 ,  B25D2250/095 ,  B25D2250/201 ,  B25D2250/221 ,  B25D2250/255 ,  H02P6/06 ,  H02P23/03 ,  H02P27/08 ,  Y02P70/173

Abstract: An electric boring tool comprises an electric motor, a switch trigger, a tip tool driven by driving force of the electric motor, a power transmission mechanism for transmitting the driving force of the electric motor to the tip tool as rotational force and/or hammer force, and a motor control unit for controlling speed of the electric motor in response to an extent of pulling of the switch trigger. The motor control unit subjects the electric motor to low speed control after the electric motor is started up, and controls the speed of the electric motor in response to the extent of pulling of the switch trigger when the load current of the electric motor is set value or greater during the low speed control.

Abstract translation: 一种电钻具，包括电动机，开关扳机，由电动机的驱动力驱动的尖端工具，用于将电动机的驱动力传递到尖端工具的动力传递机构，作为旋转力和/或锤力 以及电动机控制单元，用于响应于开关触发器的拉动程度来控制电动机的速度。 电动机控制单元在电动机起动之后使电动机进行低速控制，并且当电动机的负载电流设定值时响应于开关触发器的拉动程度来控制电动机的速度 或更高。

公开(公告)号：US07204322B2

公开(公告)日：2007-04-17

申请号：US10902717

申请日：2004-07-29

Applicant: Mitsunori Sakai

Inventor： Mitsunori Sakai

IPC: B25D9/00

CPC classification number: B25D11/125 ,  B25D17/24 ,  B25D2211/003 ,  B25D2250/201 ,  B25D2250/221 ,  Y10T74/2131

Abstract: It is an object of the present invention to provide a vibration reducing technique caused by air pressure fluctuations within a power tool. According to the present invention, a representative power tool may comprise a driving motor, a driver and a tool bit. The driving motor drives the driver to cyclically reciprocate. The tool bit is linearly driven by utilizing the pressure of air within the power tool. The air may be compressed by the reciprocating movement of the driver. The power tool changes the rotational speed of the driving motor in the cycle of the reciprocating movement of the driver so that vibration caused in the power tool can be alleviated.

Abstract translation: 本发明的目的是提供由电动工具内的气压波动引起的减振技术。 根据本发明，代表性的电动工具可以包括驱动电机，驱动器和工具钻头。 驱动电机驱动驱动器循环往复运动。 利用电动工具内的空气压力将工具头线性地驱动。 可以通过驾驶员的往复运动来压缩空气。 电动工具在驾驶员的往复运动的循环中改变驱动电动机的转速，从而可以减轻在电动工具中引起的振动。

公开(公告)号：US20060196683A1

公开(公告)日：2006-09-07

申请号：US10553300

申请日：2004-10-27

Applicant: Gerhard Meixner ,  Juergen Lennartz

Inventor： Gerhard Meixner ,  Juergen Lennartz

IPC: E02D7/02

CPC classification number: B25D11/005 ,  B25D9/26 ,  B25D2250/195 ,  B25D2250/201 ,  B25D2250/351

Abstract: A percussion mechanism for a repetitively hammering hand power tool, whose striking frequency and striking intensity are controllable independently of one another, has a striker (2), movable axially forward and backward in a guide barrel (1), and a device (5) exerting pressure on the striker (2), as a result of which the striker can be set into a forward motion in the direction of a tool bit (4) that is insertable into the hand power tool. A blocking element (10) is also provided, with which the striker (2) is blockable in its forward motion, and the striking frequency of the striker (2) is adjustable by controlling the blocking time of the blocking element (10).

Abstract translation: 一种用于重复敲击的手动电动工具的冲击机构，其冲击频率和冲击强度彼此独立地控制，具有在引导筒（1）中可轴向前后移动的撞针（2），以及装置（5） 在撞击器（2）上施加压力，由此可以将撞针沿可插入手动工具的工具头（4）的方向上向前运动。 还提供了阻挡元件（10），撞击器（2）在其向前运动中可阻挡，并且撞击器（2）的击打频率可通过控制阻挡元件（10）的阻挡时间来调节。

公开(公告)号：US20050194164A1

公开(公告)日：2005-09-08

申请号：US11070163

申请日：2005-03-03

Applicant: Takuma Saito ,  Shinki Ohtsu ,  Hideki Watanabe ,  Junichi Toukairin

Inventor： Takuma Saito ,  Shinki Ohtsu ,  Hideki Watanabe ,  Junichi Toukairin

IPC: B23B45/16 ,  B25D11/00 ,  B25D11/10 ,  B25D16/00 ,  B25D17/24 ,  B25F5/00 ,  B28D1/14 ,  B28D1/26 ,  E02D7/02

CPC classification number: B25D11/106 ,  B25D11/005 ,  B25D16/003 ,  B25D16/006 ,  B25D2216/0023 ,  B25D2216/0038 ,  B25D2250/021 ,  B25D2250/095 ,  B25D2250/201 ,  B25D2250/321 ,  B25D2250/371 ,  B25F5/001

Abstract: An impact drill includes a first ratchet rotating along with a spindle and movable in an axial direction, a second ratchet engaged with the first ratchet and movable in a axial direction but unrotatable, and a spring provided between the second ratchet and a partial member of a housing. An amount of movement of the spindle in the axial direction is regulated, so that the pressing force is too excessive, the restoring force of the spring urging the second ratchet is controlled to maintain a state of generating a set stroke force.

Abstract translation: 冲击钻包括与主轴一起旋转并可沿轴向移动的第一棘轮，与第一棘轮接合并可在轴向方向上可移动但不可旋转的第二棘轮，以及设置在第二棘轮与第二棘轮之间的弹簧 住房。 调节主轴在轴向的移动量，使得按压力过大，从而控制推动第二棘轮的弹簧的恢复力，以保持产生设定冲程力的状态。