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公开(公告)号：US20230072710A1
公开(公告)日：2023-03-09
申请号：US17799667
申请日：2021-01-26
申请人： Robert Bosch GmbH
发明人： Markus Leupert , Achim Wurst
IPC分类号： B25B23/14 , B25B23/147 , B25F5/00
摘要： A hand-held power tool, in particular a screwdriver, includes a housing, in which at least one drive unit for driving a tool holder is arranged, the tool holder being designed to hold an insertion tool. The hand-held power tool further includes a torque setting device for setting a specified torque at least within specified limits. The torque setting device has a screw thread region and a spring-loaded setting unit for setting the specified torque. The setting unit is operatively connected to the screw thread region. The torque setting device is assigned a compression spring which is coaxial to the screw thread region. The compression spring is arranged such that the screw thread region surrounds the compression spring at least partly with respect to the axial direction of the drive unit.
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公开(公告)号：US20230033932A1
公开(公告)日：2023-02-02
申请号：US17961029
申请日：2022-10-06
发明人： Alex Huber , Matthew Wycklendt , Matthew Mergener , Cole Conrad , Wing Fung Yip
IPC分类号： B25B23/147 , B25B21/02 , B25B23/18
摘要： A power tool and method of detecting impacts of a power tool that includes a motor driving a hammer to impact an anvil. A motor control unit is configured to determine a motor characteristic indicative of a speed of the motor. When the motor characteristic indicates that the speed of the motor is below a speed threshold, the motor control unit employs an acceleration-based technique to detect a first impact based on a change in motor acceleration and generate a first impact indication in response to detecting the first impact. When the motor characteristic indicates that the speed is above the speed threshold, the motor control unit employs a time-based technique to detect a second impact based on an elapsed time and generates a second impact indication in response to detecting the second impact.
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公开(公告)号：US11548123B2
公开(公告)日：2023-01-10
申请号：US16606709
申请日：2018-04-05
发明人： Adam Klotblixt
IPC分类号： B25B21/02 , B25B23/147 , H02K7/14 , H02P8/10
摘要： An electric pulse tool is configured to deliver torque in pulses on an output shaft thereof and includes an electric motor to drive the output shaft. The electric pulse tool is configured to, for each period, provide a current pulse to the electric motor during a current-on time interval, pause a current feed to the electric motor after the current-on time interval until an end of a torque pulse, determine a width of the torque pulse, and continue pausing the current feed to the electric motor during a pause interval from the end of the torque pulse. The pause interval is determined based on the width of the torque pulse such that a wider torque pulse results in a wider pause interval and a narrower torque pulse results in a shorter pause interval.
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公开(公告)号：US20220410360A1
公开(公告)日：2022-12-29
申请号：US17754679
申请日：2020-09-23
申请人： Robert Bosch GmbH
发明人： Simon Erbele , Wolfgang Herberger
IPC分类号： B25F5/00 , B25B21/00 , B25B23/147
摘要： A method is for operating a hand-held power tool that includes an electric motor. The method includes determining a signal of an operating parameter of the electric motor; determining an application class at least partly on the basis of the signal of the operating parameter; and providing comparative information at least partly on the basis of the application class including (i) providing at least one model-signal form, and (ii) providing a threshold value for correspondence. The model-signal form can be assigned to an established state in the progress of the work performed by the hand-held power tool. The method further includes comparing the signal of the operating parameter with the model-signal form and determining a correspondence evaluation from the comparison. The correspondence evaluation is at least partly based on the threshold value for correspondence.
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公开(公告)号：US11484999B2
公开(公告)日：2022-11-01
申请号：US16785823
申请日：2020-02-10
IPC分类号： B25B23/00 , B25B23/147 , B25B21/02 , G01D5/20
摘要： A power tool including a motor and an impact mechanism. The impact mechanism is coupled to the motor and includes a hammer driven by the motor, and an anvil positioned at a nose of the power tool, and configured to receive an impact from the hammer. The power tool also includes a sensor assembly positioned at the nose of the power tool, and an electronic processor. The sensor assembly includes an output position sensor configured to generate an output signal indicative of a position of the hammer or the anvil. The electronic processor is coupled to the output position sensor and to the motor, and is configured to operate the motor based on the output signal from the output position sensor.
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公开(公告)号：US11478909B2
公开(公告)日：2022-10-25
申请号：US17035540
申请日：2020-09-28
申请人： Shih-Hao Lai
发明人： Shih-Hao Lai
IPC分类号： B25B23/14 , B25B23/00 , B25B23/147 , B25B23/145 , B25B23/142
摘要： An extensive shaft assembly includes a casing, an extensive shaft, a sensor, a warning apparatus, and a connecting apparatus. The extensive shaft extends throughout the casing. The sensor is connected to the extensive shaft. The warning apparatus includes an LED module and a light-guiding ring. The light-guiding ring includes a slit. The LED module is electrically connected to the sensor and located in the slit of the LED module. The connecting apparatus connects the light-guiding ring to the casing so that an external annular portion of the light-guiding ring is visible through a gap between the casing and the connecting apparatus.
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公开(公告)号：US20220266429A1
公开(公告)日：2022-08-25
申请号：US17754380
申请日：2020-09-23
申请人： Robert Bosch GmbH
发明人： Simon Erbele , Wolfgang Herberger
IPC分类号： B25B23/147 , G05B13/02 , B25F5/00 , G05B13/04
摘要： The disclosure relates to a method for operating a handheld power tool comprising an electric motor and the method comprising: S1 providing comparative information, comprising: S1a providing at least one model signal shape, the model signal shape being assignable to progress of work of the handheld power tool; S1b providing a threshold value of correspondence; S2 ascertaining a signal of an operating variable of the electric motor; S3 comparing the signal of the operating variable with the model signal shape and ascertaining assessment of correspondence from the comparison, the assessment of correspondence at least partially taking place on the basis of the threshold value of correspondence; S4 detecting the progress of work at least partially on the basis of the assessment of correspondence ascertained in method step S3; the providing of the comparative information at least partially taking place on the basis of a learning process.
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公开(公告)号：US20220241943A1
公开(公告)日：2022-08-04
申请号：US17624525
申请日：2020-05-27
IPC分类号： B25B23/147 , G05B19/18
摘要： An electric tool system includes an electric tool and an inspection device. The electric tool includes: a tightening unit configured to tighten a workpiece onto an attaching target by driving force of a drive source; and a sensor configured to measure a tightening torque provided by the tightening unit. The inspection device includes a measuring unit configured to measure tightening force applied from the tightening unit. The electric tool system further includes an association processor configured to associate a first torque measured value with a second torque measured value. The first torque measured value corresponds to a measurement result by the sensor. The second torque measured value corresponds to a measurement result by the measuring unit.
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公开(公告)号：US20220241935A1
公开(公告)日：2022-08-04
申请号：US17576002
申请日：2022-01-14
申请人： AIMCO
发明人： Christopher Landon , Johann Sonntag , Benjamin Belli , Michael Juliano , Thomas Burnett , Kenneth Arnell , Len Demchak
IPC分类号： B25B21/00 , B25B23/16 , B25B23/147
摘要： An apparatus for precisely measuring and applying torque and angle of rotation to tighten screwed fasteners. The apparatus includes a drive motor for generating a rotation, a pair of spaced triggers for activating the operation of the drive motor, and a controller for precisely measuring the torque to be applied and angle of rotation to be achieved by the apparatus, the controller not permitting the motor to be activated without both of the triggers being activated. A reduction gear system is also provided for reducing a rate of rotation generated by the motor, the reduction gear system outputting a rotational drive torque for driving the screwed fastener.
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公开(公告)号：US20220193867A1
公开(公告)日：2022-06-23
申请号：US17604894
申请日：2020-01-30
IPC分类号： B25B21/02 , B25B23/147
摘要： An electric power tool includes an electric motor (AC motor), an impact mechanism, an impact detecting unit, and a measuring unit. The impact mechanism performs an impact operation that generates impacting force by receiving motive power from the electric motor. The impact detecting unit determines whether or not the impact operation is being performed. The measuring unit measures at least one of a d-axis current or a q-axis current, each of which is supplied to the electric motor. The impact detecting unit determines, based on at least one of a measured value (current measured value) of the d-axis current or a measured value (current measured value) of the q-axis current, whether or not the impact operation is being performed. The measured values (current measured values) of the d-axis current and the q-axis current have been obtained by the measuring unit.
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