EP1374653A1 - Ansteuereinrichtung für einen elektromotor - Google Patents
Ansteuereinrichtung für einen elektromotorInfo
- Publication number
- EP1374653A1 EP1374653A1 EP02735012A EP02735012A EP1374653A1 EP 1374653 A1 EP1374653 A1 EP 1374653A1 EP 02735012 A EP02735012 A EP 02735012A EP 02735012 A EP02735012 A EP 02735012A EP 1374653 A1 EP1374653 A1 EP 1374653A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric motor
- power semiconductor
- carrier plate
- controlling
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004065 semiconductor Substances 0.000 claims abstract description 64
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 claims description 9
- 241000722921 Tulipa gesneriana Species 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/008—Cooling means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S388/00—Electricity: motor control systems
- Y10S388/935—Specific application:
- Y10S388/937—Hand tool
Definitions
- the invention relates to a device for controlling an electric motor.
- Such a device is mainly used in a power tool.
- it can be a cordless power tool with a brushless DC motor.
- control circuit In the case of power tools, it is known to arrange the control circuit on a circuit board in the housing of the power tool. In the handle shell of the housing there is also an electrical switch for manual operation of the power tool. Finally, the power semiconductors used to supply voltage to the electric motor are also accommodated in the housing. The control electronics, the switch and the power semiconductors are connected to one another and to the electric motor and, if appropriate, to the battery by means of electrical lines.
- the outlay associated with the cabling has proven to be disadvantageous. Due to the limited installation space in the housing of the power tool, it is often difficult to accommodate the device. Furthermore, the lines can also falsify the motor current switched by means of the power semiconductors, so that the electric motor is operated incorrectly, which can ultimately cause damage and failure of the power tool.
- the invention has for its object to provide a device for controlling an electric motor, which is compact and thus also in limited Installation spaces can be accommodated.
- the control device is to permit reliable control of the electric motor.
- the control device has a carrier plate, which can be, for example, a printed circuit board, at least part of the control circuit, in particular electrical and / or electronic components, and the conductor tracks of the control circuit connecting the electrical and / or electronic components, is arranged on the carrier plate.
- the power semiconductor is arranged on the carrier plate and / or on a carrier element fastened on the carrier plate, with which the control device is suitable for limited installation spaces.
- the control device has a carrier plate, at least part of the control circuit, in particular electrical and / or electronic components and the conductor tracks of the control circuit connecting the electrical and / or electronic components, being arranged on the carrier plate.
- the carrier plate consists of a metal part, the surface of which faces the components and the conductor tracks is provided with an insulating coating, such that the components, the conductor tracks or the like are in turn located on the coating.
- the metal part also serves as a heat sink, so that the heat loss can be safely dissipated even at high outputs.
- the power semiconductor can be arranged on the coating of the metal part.
- the coating contains a recess and that the power semiconductor at the recess directly on the Metal part is attached, for example by soldering. This ensures that the high heat loss generated in the power semiconductor is dissipated in an efficient manner and the power semiconductor is thus protected against premature failure.
- the power semiconductors can also be arranged on a carrier element in the second embodiment, the carrier element being fastened on the carrier plate. This results in a further compactification of the control device.
- a plurality of power semiconductors can be arranged on the carrier element or on the carrier plate for particularly high currents.
- several MOSFETs are then generally used as power semiconductors.
- a control circuit for a cordless power tool can have six MOS-FETs.
- the carrier element for the power semiconductor is designed as a heat sink. This ensures that, above all, the higher heat loss that arises at the power semiconductor is safely dissipated and that the control circuit cannot be influenced by this heat loss. It is advisable that the carrier element is arranged to protrude approximately vertically from the carrier plate. The carrier element can in turn be pressed and / or soldered into the carrier plate.
- a battery is expediently used to supply the electric motor with voltage. It is then appropriate to simplify the current supply that the carrier plate is arranged in the vicinity of the battery, preferably in such a way that the power semiconductor and / or the carrier element with the power semiconductor faces the battery.
- a pluggable contacting of the battery is produced in a simple manner in that plug contacts, which are designed in particular in the form of contact clips, for example , ulpen , 'clips , are arranged on the carrier plate.
- a further simplification can be achieved in that the plug contacts can be plugged and / or snapped onto the carrier plate. There is an adapter for this.
- the power semiconductor and / or the carrier element for the power semiconductor is arranged directly on the edge of the carrier plate facing the battery. Then the power semiconductor and / or the carrier element can be in direct electrical contact with the plug contacts for the battery. To simplify production, the plug contacts are integrated in one piece in the carrier plate and / or the carrier element.
- the capacitors of the control circuit are soldered directly to the plug contact in a compact arrangement. Furthermore, the capacitors of the control circuit can be arranged on the carrier plate, specifically between the power semiconductor and / or the carrier element for the power semiconductor and the plug contacts.
- the control circuit is supplied with a setpoint for setting an assigned speed for the electric motor.
- a sensor element such as a potentiometer, a Hall element, a magnetoresistive element or another element, is located on the carrier plate to generate the setpoint.
- the sensor element it can be arranged in a housing, the housing of an electrical switch expediently being suitable for this purpose.
- the switch then has an actuating member, in particular in the form of a pusher, for actuating the sensor element, the actuating member being arranged on the housing of the switch.
- a contact system which serves to switch the voltage supply of the electric motor and, if appropriate, the control circuit can be arranged in the electrical switch.
- the contact system can also be actuated by means of the actuating member.
- the carrier plate serves to receive and fasten the electrical switch at the same time.
- a further electrical switch for switching between clockwise / counterclockwise rotation of the electric motor is then also arranged on the carrier plate.
- This further switch can be a microswitch and / or snap switch, with an actuating element acting, for example, in the manner of a slide, acting on the further switch.
- the control device according to the invention is advantageously to be used in the grip shell of a power tool in the manner of a prefabricated module, the actuating element then protruding from the grip shell for manual actuation.
- Such a control device can alternatively also be arranged in the battery of the power tool, so that after the battery is inserted into the handle of the power tool, the actuating member protrudes from the handle.
- the actuating element already in the grip shell can just as well be articulated to the control device.
- control device is of compact design and can therefore also be accommodated in narrow installation spaces of the grip shell of power tools.
- control device is of compact design and can therefore also be accommodated in narrow installation spaces of the grip shell of power tools.
- control device has greater operational reliability than previous devices, so that damage to the power tool in this regard is effectively prevented.
- FIG. 3 shows the control device from FIG. 2 in a side view
- 4 the carrier element with power semiconductor as a single part in a side view
- Fig. 5 shows the carrier element with power semiconductor as an individual part in a further side view
- Fig. 6 shows the control device as in Fig. 2 according to a second embodiment.
- the control device 1 shows an electric tool 22 with a device 1 for controlling an electric motor 23.
- the electric motor 23 can be a brushless DC motor in a cordless power tool.
- the control device 1 shown in FIGS. 2 and 3 as an individual part has at least one power semiconductor 3 for controllably applying an electrical voltage to the electric motor 23 and a control circuit 4 for controlling the power semiconductor 3.
- the control circuit 4 comprises electrical and / or electronic components 5 and the these connecting conductor tracks 6.
- the control device 1 has a carrier plate 2, at least part of the control circuit 4 being arranged on the carrier plate 2.
- the power semiconductor 3 is arranged on a carrier element 7.
- the carrier element 7 is in turn fastened to the carrier plate 2, as can be seen from FIG. 4, with which a particular flexibility in the arrangement of the power semiconductor 3 is achieved with a small space requirement on the carrier plate 2.
- the carrier plate 2 can be, for example, a printed circuit board.
- the power semiconductor 3 can also be arranged directly on the carrier plate 2 if the space available there is sufficient.
- the carrier plate 2 consists of a metal part 9, the surface of which faces the components 5 and the conductor tracks 6 is provided with an electrically insulating coating 8.
- the components 5, the conductor tracks 6 or the like are in turn on the coating 8.
- the metal part 9 also serves as a heat sink, making a heat sink separately attached to the control device 1 superfluous.
- the power semiconductor 3 can also be arranged on a carrier element 7 corresponding to FIG. 2, the carrier element 7 then being fastened to the carrier plate 2.
- the carrier element 7 can also be dispensed with here, which is shown in FIG. 6.
- the power semiconductor 3 can be arranged on the coating 8 of the metal part 9.
- the coating 8 may just as well contain a cutout 10 to which the power semiconductor is fastened directly on the metal part 9, as is illustrated by the two power semiconductors 3 ′ located on the left.
- the power semiconductor 3, 3 ' is attached, for example, by soldering.
- a plurality of power semiconductors 3 can be arranged on the carrier element 7 or also on the carrier plate 2. As can be seen from a comparison of FIGS. 4 and 5, in a brushless DC motor, for example, six power semiconductors 3 can be located in the control device 1, this being MOS-FET as a power semiconductor. Furthermore, the carrier element 7 for the power semiconductor 3 can be designed as a heat sink. The heat sink is arranged approximately vertically projecting from the carrier plate 2, as can be seen in more detail in FIG. 4. The carrier element 7 is preferably pressed and / or soldered into the carrier plate 2.
- a rechargeable battery which is inserted into the electrical tool 22 at an insertion opening 24 visible in FIG. 1, serves to supply voltage to the electric motor 23, then the carrier plate 2 is arranged in the vicinity of the rechargeable battery in such a way that the carrier element 7 with the power semiconductor 3 and / or the power semiconductor 3 itself the battery is facing.
- 2 plug contacts 11 are arranged on the carrier plate.
- the plug contacts 11 are designed in the manner of contact clips, for example as “tulip” clips.
- the plug contacts 11 can be plugged onto and / or snapped onto the carrier plate 2, for which purpose an adapter 12 is attached to the plug contact 11.
- FIG. 2 What can be seen in more detail in FIG. 2 is to arrange the carrier element 7 for the power semiconductor 3 and / or the power semiconductor 3 directly on the edge 13 of the carrier plate 2 facing the battery.
- the carrier element 7 and / or the power semiconductor 3 are then expediently in direct electrical contact with the plug contacts 11 for the battery.
- the plug contacts 11 can also be integrated in one piece into the carrier plate 2 and / or the carrier element 7.
- capacitors 14 of the control circuit 4 are arranged on the carrier plate 2, namely the capacitors 14 are located between the carrier element 7 for the power semiconductor 3 and / or the power semiconductor 3 and the plug contacts 11.
- the capacitors 14 of the control circuit 4 can be connected directly to the plug connection 11 be soldered, but this is not shown further.
- potentiometer 15 on the carrier plate 2, as indicated schematically in FIG. 2.
- another sensor element 15 such as a Hall element, a magnetoresistive element or the like, can also be used.
- a desired value is generated, which in turn is fed to the control circuit 4 for setting the assigned speed for the electric motor 23.
- the potentiometer 15 or the sensor element 15 is arranged in a housing 17 of an electrical switch 16.
- An actuator 18 designed in the manner of a pusher is arranged on the housing 17 of the switch 16.
- the actuating member 18 then acts on the potentiometer 15 or the sensor element 15 in order to output the corresponding desired value.
- a contact system 19 again only indicated schematically, which can also be actuated manually by the user by means of the actuating member 18.
- the contact system 19 serves to switch the voltage supply of the electric motor 23. If necessary, the voltage supply of the control circuit 4 can also be switched on and off by means of the contact system 19.
- a further electrical switch 20 which is in particular a microswitch and / or snap switch, can be arranged on the carrier plate 2.
- An actuating element 21 acts on the further switch 20 for manual actuation by the user.
- the actuating element 21 is designed, for example, in the manner of a slide and is used for switching over for the clockwise / counterclockwise rotation of the electric motor 23.
- the control device 1 is preferably intended for an electric tool 22.
- the power tool 22 is equipped with a grip shell 25 on which the user holds the power tool 22. It then makes sense to arrange the control device 1 in the grip shell 25, which can be seen from FIG. 1. This arrangement can be carried out in such a way that the actuating member 18 and optionally the actuating element 21 protrude from the handle shell 25 for manual actuation.
- the control device 1 can be arranged in the battery, but this is not shown further. After the battery has been inserted into the grip shell 25 of the power tool 22, the actuating member 18 and possibly the actuating element 21 protrude from the grip shell 25. When inserting the rechargeable battery, the actuating element 18 already located in the grip shell 25 and optionally the actuating element 21 can just as well be articulated to the control device 1.
- control device 1 can thus not only be used in power tools 22, but can also be used in others Electrical devices, such as household electrical appliances, electrical garden devices, machine tools, control devices or the like, are advantageously used.
- control device for controlling an electric motor
- control device carrier plate, 3 ': line semiconductor: control circuit: component (of the control circuit): conductor track: carrier element: (insulating) coating: metal part 0: recess 1: plug contact 2: adapter (on plug contact) 3 : Edge (of the support plate) 4: capacitor 5: sensor element / potentiometer 6: electrical switch 7: housing (from switch) 8: actuator 9: contact system (in switch) 0: (further) switch 1: actuating element (from further switch) 2: power tool 3: electric motor 4: insertion opening (for battery) 5: grip (from power tool)
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10114574 | 2001-03-24 | ||
DE10114574 | 2001-03-24 | ||
PCT/DE2002/001059 WO2002078416A1 (de) | 2001-03-24 | 2002-03-22 | Ansteuereinrichtung für einen elektromotor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1374653A1 true EP1374653A1 (de) | 2004-01-02 |
EP1374653B1 EP1374653B1 (de) | 2005-04-20 |
Family
ID=7678918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02735012A Expired - Lifetime EP1374653B1 (de) | 2001-03-24 | 2002-03-22 | Ansteuereinrichtung für einen elektromotor |
Country Status (4)
Country | Link |
---|---|
US (1) | US7359628B2 (de) |
EP (1) | EP1374653B1 (de) |
DE (2) | DE10212721A1 (de) |
WO (1) | WO2002078416A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9450471B2 (en) | 2012-05-24 | 2016-09-20 | Milwaukee Electric Tool Corporation | Brushless DC motor power tool with combined PCB design |
US9787159B2 (en) | 2013-06-06 | 2017-10-10 | Milwaukee Electric Tool Corporation | Brushless DC motor configuration for a power tool |
US9812930B2 (en) | 2010-06-14 | 2017-11-07 | Black & Decker Inc. | Control unit for a power tool |
US11047528B2 (en) | 2016-02-12 | 2021-06-29 | Black & Decker Inc. | Electronic braking for a power tool having a brushless motor |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
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DE10246761A1 (de) * | 2002-10-07 | 2004-04-15 | Hilti Ag | Batteriebetriebene Elektrohandwerkzeugmaschine |
US20050194166A1 (en) * | 2003-06-10 | 2005-09-08 | Goodti Industrial Co., Ltd. | High torque electromotive tool |
DE20321117U1 (de) * | 2003-09-29 | 2005-12-22 | Robert Bosch Gmbh | Akkuschrauber |
US7414337B2 (en) * | 2005-03-14 | 2008-08-19 | Black & Decker Inc. | Scrubber |
SE529217C2 (sv) * | 2005-05-20 | 2007-06-05 | Atlas Copco Tools Ab | Momentberoende utlösningskoppling för en skruvdragare |
WO2007012311A1 (de) * | 2005-07-27 | 2007-02-01 | Marquardt Gmbh | Elektrowerkzeug, insbesondere akkubetriebene gewindeschneidmaschine |
US8657031B2 (en) * | 2005-10-12 | 2014-02-25 | Black & Decker Inc. | Universal control module |
DE102008003246B4 (de) | 2007-01-13 | 2023-09-21 | Marquardt Gmbh | Ansteuereinrichtung für einen Elektromotor |
DE102008029552A1 (de) * | 2007-06-27 | 2009-01-08 | Marquardt Gmbh | Elektrowerkzeug, insbesondere Akku-Elektrowerkzeug |
DE102009027705A1 (de) | 2009-07-15 | 2011-01-20 | Robert Bosch Gmbh | Handgeführtes Elektrowerkzeug |
DE202009010557U1 (de) | 2009-08-05 | 2010-12-16 | Makita Corp., Anjo | Vormontierte Vorrichtung |
DE102010029267A1 (de) * | 2010-05-25 | 2011-12-01 | Robert Bosch Gmbh | Elektrowerkzeug, insbesondere Bohrschrauber |
US8254125B2 (en) * | 2010-09-27 | 2012-08-28 | X'pole Precision Tools Inc. | Machine tool with a heat conduction structure |
WO2012126517A1 (en) * | 2011-03-22 | 2012-09-27 | Juken Swiss Technology Ag | Adapter plate with surface mount contacts |
EP2689517B1 (de) * | 2011-03-22 | 2015-05-27 | Juken Swiss Technology AG | Kupplungselement mit einpresskontakten |
US8786233B2 (en) | 2011-04-27 | 2014-07-22 | Medtronic Xomed, Inc. | Electric ratchet for a powered screwdriver |
EP2524773B1 (de) | 2011-05-19 | 2017-06-21 | Black & Decker Inc. | Elektronische Energievorrichtung für ein Elektrowerkzeug |
US8493172B2 (en) | 2011-09-30 | 2013-07-23 | Snap-On Incorporated | Variable speed toggle trigger |
WO2014031539A1 (en) * | 2012-08-20 | 2014-02-27 | Milwaukee Electric Tool Corporation | Brushless dc motor power tool with combined pcb design |
US10821591B2 (en) | 2012-11-13 | 2020-11-03 | Milwaukee Electric Tool Corporation | High-power cordless, hand-held power tool including a brushless direct current motor |
JP6085225B2 (ja) | 2013-06-27 | 2017-02-22 | 株式会社マキタ | ネジ締め電動工具 |
US20150280515A1 (en) | 2014-03-28 | 2015-10-01 | Black & Decker Inc. | Integrated Electronic Switch and Control Module for a Power Tool |
US10693344B2 (en) | 2014-12-18 | 2020-06-23 | Black & Decker Inc. | Packaging of a control module for a brushless motor |
CN105848404B (zh) * | 2015-01-14 | 2019-04-19 | 南京德朔实业有限公司 | 电动工具及其电路板 |
US10441483B2 (en) * | 2016-07-20 | 2019-10-15 | Stryker Corporation | Emergency patient motion system |
US10541588B2 (en) | 2017-05-24 | 2020-01-21 | Black & Decker Inc. | Electronic power module for a power tool having an integrated heat sink |
WO2019094247A1 (en) | 2017-11-07 | 2019-05-16 | Milwaukee Electric Tool Corporation | Non-contact speed selector swtich in rotary power tool |
US11890741B2 (en) | 2019-05-13 | 2024-02-06 | Milwaukee Electric Tool Corporation | Contactless trigger with rotational magnetic sensor for a power tool |
CN217608150U (zh) | 2019-06-24 | 2022-10-18 | 米沃奇电动工具公司 | 电动工具 |
DE102021201620A1 (de) | 2021-02-19 | 2022-08-25 | Robert Bosch Gesellschaft mit beschränkter Haftung | Elektrisches Bearbeitungsgerät zum wahlweisen Betrieb mit zumindest zwei unterschiedlichen Versorgungsspannungen |
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-
2002
- 2002-03-21 DE DE10212721A patent/DE10212721A1/de not_active Withdrawn
- 2002-03-22 DE DE50202845T patent/DE50202845D1/de not_active Expired - Lifetime
- 2002-03-22 US US10/472,691 patent/US7359628B2/en not_active Expired - Lifetime
- 2002-03-22 WO PCT/DE2002/001059 patent/WO2002078416A1/de not_active Application Discontinuation
- 2002-03-22 EP EP02735012A patent/EP1374653B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9812930B2 (en) | 2010-06-14 | 2017-11-07 | Black & Decker Inc. | Control unit for a power tool |
US9450471B2 (en) | 2012-05-24 | 2016-09-20 | Milwaukee Electric Tool Corporation | Brushless DC motor power tool with combined PCB design |
US11923752B2 (en) | 2012-05-24 | 2024-03-05 | Milwaukee Electric Tool Corporation | Brushless DC motor power tool with combined PCB design |
US9960656B2 (en) | 2012-05-24 | 2018-05-01 | Milwaukee Electric Tool Corporation | Brushless DC motor power tool with combined PCB design |
US11031843B2 (en) | 2012-05-24 | 2021-06-08 | Milwaukee Electric Tool Corporation | Brushless DC motor power tool with combined PCB design |
US10530220B2 (en) | 2012-05-24 | 2020-01-07 | Milwaukee Electric Tool Corporation | Brushless DC motor power tool with combined PCB design |
US10693345B2 (en) | 2013-06-06 | 2020-06-23 | Milwaukee Electric Tool Corporation | Brushless DC motor configuration for a power tool |
US10978933B2 (en) | 2013-06-06 | 2021-04-13 | Milwaukee Electric Tool Corporation | Brushless DC motor configuration for a power tool |
US10348159B2 (en) | 2013-06-06 | 2019-07-09 | Milwaukee Electric Tool Corporation | Brushless DC motor configuration for a power tool |
US11777369B2 (en) | 2013-06-06 | 2023-10-03 | Milwaukee Electric Tool Corporation | Brushless dc motor configuration for a power tool |
US9787159B2 (en) | 2013-06-06 | 2017-10-10 | Milwaukee Electric Tool Corporation | Brushless DC motor configuration for a power tool |
US12081104B2 (en) | 2013-06-06 | 2024-09-03 | Milwaukee Electric Tool Corporation | Brushless DC motor configuration for a power tool |
US11047528B2 (en) | 2016-02-12 | 2021-06-29 | Black & Decker Inc. | Electronic braking for a power tool having a brushless motor |
Also Published As
Publication number | Publication date |
---|---|
US7359628B2 (en) | 2008-04-15 |
WO2002078416A1 (de) | 2002-10-03 |
DE50202845D1 (de) | 2005-05-25 |
US20040112616A1 (en) | 2004-06-17 |
EP1374653B1 (de) | 2005-04-20 |
DE10212721A1 (de) | 2002-09-26 |
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