EP3296065A1 - Machine-outil portative à entraînement électromotorique en tant qu'entraînement direct - Google Patents

Machine-outil portative à entraînement électromotorique en tant qu'entraînement direct Download PDF

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Publication number
EP3296065A1
EP3296065A1 EP17195361.5A EP17195361A EP3296065A1 EP 3296065 A1 EP3296065 A1 EP 3296065A1 EP 17195361 A EP17195361 A EP 17195361A EP 3296065 A1 EP3296065 A1 EP 3296065A1
Authority
EP
European Patent Office
Prior art keywords
tool
hand tool
housing part
drive
length
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
Application number
EP17195361.5A
Other languages
German (de)
English (en)
Other versions
EP3296065B1 (fr
Inventor
Johannes WOLPERDING
Joachim Schadow
Florian Esenwein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to PL17195361T priority Critical patent/PL3296065T3/pl
Priority to PL20159673T priority patent/PL3689553T3/pl
Priority to EP21189051.2A priority patent/EP3936284A1/fr
Priority to EP20159673.1A priority patent/EP3689553B1/fr
Publication of EP3296065A1 publication Critical patent/EP3296065A1/fr
Application granted granted Critical
Publication of EP3296065B1 publication Critical patent/EP3296065B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/028—Angle tools
    • 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

Definitions

  • the invention relates to a hand tool with an electromotive direct drive.
  • a first housing of the power tool advantageously has a first housing part and a second housing part.
  • the first housing part and the second housing part are to be understood here in particular as theoretical constructions that do not exist in practice. This means that the first housing part and the second housing part are not component units that can be assembled and / or disassembled. But it is also conceivable that the first housing part and the second housing part are designed as separate component units.
  • the second housing part is as a handle educated.
  • the term "handle" is intended to mean a component around which at least one hand of an operator can be placed to guide the power tool 10.
  • the ratio of a length of the power tool to a height of the first housing part should be between 1.6 and 2.8, but preferably be 2.25. As a result, a particularly good handling is achieved.
  • the height h is to be understood here as the geometric dimension of the first housing part in the y direction.
  • the length l of the power tool should be understood to mean the dimension of the power tool in the x direction.
  • the length l includes an externally visible, on an upper edge of the power tool extending length l 1 of the rechargeable battery.
  • At least one rechargeable battery as an energy source for the handheld power tool.
  • energy source is understood here to mean a component which provides the electrical energy for the electromotive drive.
  • the electromotive drive forms a first common axis with the first housing.
  • the first axis is coaxial with a motor axis.
  • the height h of the first housing is at least between 70 mm and 90 mm, but is preferably 80 mm.
  • the height h is defined here along the first axis.
  • At least one electronics is provided for energizing the electromotive drive.
  • the electronics are at least partially received by the second housing.
  • the rechargeable battery with the second housing part forms a second common axis, which penetrates the rechargeable battery.
  • the length l of the portable power tool is between 150 mm and 200 mm, but is preferably 180 mm.
  • the length l is defined along the second axis.
  • the length l of the power tool includes a length l 1 of the rechargeable battery. Without the length l 1 of the rechargeable battery, the length l of the portable power tool is preferably between 130 mm and 170 mm. However, the length l of the handheld power tool without the length l 1 of the rechargeable battery is particularly preferably 150 mm.
  • a particularly ergonomic hand tool machine results if the ratio of the length l of the hand tool to a circumference U of the second housing part is between 0.8 and 1.8, in particular between 1.0 and 1.6, but preferably between 1.0 and 1, 3 is located.
  • the circumference U of the second housing part is between 110 and 200 mm, in particular between 125 and 185 mm, but preferably between 150 and 175 mm.
  • the hand tool is ergonomically good to use in one-handed operation.
  • the electric motor drive operates as a direct drive.
  • a "direct drive” is to be understood that the electronically commutated motor is connected to a tool spindle without the interposition of a transmission.
  • the electromotive Anstrieb an electronically commutated electric motor. It is particularly advantageous if the electronically commutated electric motor is an internal rotor motor. As a result, high speeds and high power density can be achieved. In a further advantageous embodiment, the electronically commutated electric motor is an external rotor motor. If the electronically commutated electric motor is an external rotor motor, the electromotive drive is robust designed and can deliver high torques from the state out. Such a drive is therefore particularly suitable for applications in which high torques are required.
  • the speed at the tool spindle is greater than 12 000 min -1 .
  • At least one fan is arranged in the first housing.
  • the fan between the electric motor drive and a receptacle for a machining tool is integrated.
  • an effective cooling is guaranteed.
  • a weight of the portable power tool is between 0.5 and 1.0 kg.
  • the weight of the portable power tool is between 0.6 and 0.7 kg.
  • a processing tool for the hand tool has a diameter d which is between 60 and 100 mm, especially between 70 and 90 mm, but preferably between 75 and 80 mm.
  • a ratio of the diameter d of the machining tool to the diameter d 1 of the electromotive drive which is between 1.5 and 2.6, especially between 1.8 and 2.4, but preferably between 1.9 and 2.1.
  • a cutting depth of the machining tool is between 20 and 25 mm, preferably between 15 and 20.
  • At least one lighting device is provided to illuminate a working field or the like.
  • the illumination device can also project optical information onto the processing tool and / or into the environment.
  • FIG. 1 a trained as angle grinder hand tool 10 is shown in a schematic representation.
  • a first housing 12 consists of a first housing half shell 13 and a second housing half shell 15. The parting plane between the two housing half shells is in this case in the image plane of a viewer.
  • the first housing 12 also includes a first housing part 14 and a second housing part 16.
  • the first housing part 14 and the second housing part 16 are separated by an imaginary dividing line 17.
  • the two housing parts 14, 16 are theoretically illustrated housing parts to illustrate the structure of the power tool 10. However, they are not mountable and / or removable housing parts.
  • the dividing line 17 extends perpendicularly in the y direction (s. FIG. 1 ) and thereby crosses an axis of a sleeve-shaped portion 19.
  • the axis of the sleeve-shaped portion 19 lies here in the viewing direction of the observer.
  • an electric motor drive 18 is arranged in the first housing part 14.
  • the electromotive drive 18 is preferably designed as an electronically commutated motor 20.
  • the electric motor drive 18 drives a in FIG. 1 Tool spindle 22 not shown.
  • the second housing part 16 is designed as a handle 24.
  • the term "handle" is intended to mean a component around which at least one hand of an operator can be placed to guide the power tool 10.
  • a rechargeable battery 26 serves as an energy source for the electric motor drive 18.
  • FIG. 2 the hand tool 10 according to the invention is shown schematically in partial view.
  • a geometric extent of the first housing part 14 is defined by its height h.
  • the height h is the geometric dimension of the first housing part 14 in the y-direction.
  • a geometric extension of the power tool 10 is defined by a length l.
  • the length l here is the geometric dimension of the power tool 10 in the x direction.
  • the length l is defined herein including an externally visible geometric dimension l 1 of the rechargeable battery 26.
  • the length l 1 of the rechargeable battery 26 extends in this case at an upper edge 21 of the power tool 10.
  • the ratio of the length l of the portable power tool 10 to the height h of the first housing part 14 is between 1.5 and 2.8.
  • the ratio of the length l of the power tool 10 to the height h of the first housing part 14 is 2.25.
  • the electromotive drive 18 forms with the first housing part 14 a first common axis 28.
  • the first common axis 28 is coaxial with a motor shaft 30 of the electromotor drive 18.
  • the motor shaft 30 continues in the exemplary embodiment in the tool spindle 22.
  • the height h of the first housing part is along the first axis 28 at least between 70 mm and 100 mm.
  • the height h is preferably 80 mm. This information does not include possible, but to be considered deviations that may be due to manufacturing tolerances.
  • An electronics 32 is provided to energize the electric motor drive 18.
  • the electronics 32 is arranged in the second housing part. But it is also conceivable to integrate the electronics 32, for example in the electric motor drive 18 or run separately.
  • the electronics are provided for controlling and / or regulating the electromotive drive 18 of the handheld power tool 10 as a function of a parameter concerning the handheld power tool 10.
  • the second axis penetrates the rechargeable battery 26 and advantageously extends along the second housing part 16 in an axial direction of the second housing part 16 is defined along the second axis 34.
  • the two axes 28, 34 are at an angle a to each other, which is between 60 ° and 120 °, especially between 80 ° and 100 °, but preferably about 90 °.
  • the angle specification does not take into account manufacturing tolerances.
  • the length l of the power tool 10 along the second axis 34 is at least between 150 mm and 200 mm. Preferably, the length l is 180 mm.
  • the length l of the hand tool 10 includes a length l 1 of the rechargeable battery 26 with a. This information does not take into account possible manufacturing tolerances. Without the length l 1 of the rechargeable battery 26, the length l of the power take-off machine 10 is between 130 mm and 170 mm, but is preferably 150 mm.
  • the ratio of the length l of the second housing part 16 to the circumference U of the second housing part 16 is optimally designed.
  • the optimum ratio of the length l of the second housing part 16 to the circumference U of the second housing part 16 should be at least between 0.8 and 1.8, especially between 1.0 and 1.6, but preferably between 1.0 and 1.3 ,
  • the circumference U of the second housing part 16 in this case defines the gripping circumference of the handle 24.
  • a particularly ergonomic embodiment of the power tool 10 is achieved by an optimal circumference U of the second housing part 16.
  • the gripping circumference of the handle 24 is between 110 and 200 mm, especially between 125 and 185 mm, but preferably between 150 and 175 mm. If the grip circumference of the handle 24 is within this range of values, the handheld power tool 10 can be guided in any working position of an operator with one hand. These specifications take no account of deviations that can occur due to manufacturing tolerances.
  • the electronically commutated electric motor 20 drives the tool spindle 22 directly.
  • direct is to be understood that the electronically commutated electric motor 20 is connected to the tool spindle 22 without the interposition of a conventional transmission.
  • the electronically commutated electric motor 20 is an internal rotor motor.
  • a stator 36 which carries the current-carrying windings 38, on a motor housing 40.
  • a rotor 42 which carries the permanent magnets 44 is connected to the motor shaft 30.
  • FIG. 3 Another embodiment of the hand tool 10 according to the invention is shown in FIG. 3 shown.
  • the electronically commutated electric motor 20 is an external rotor motor.
  • the stator 36 which carries the windings 38, is enclosed by the rotor 42.
  • the magnetic field is generated by permanent magnets 44, which are arranged in the rotor 42.
  • the rotor 42 is usually attached to the motor shaft 30 while the stator is mounted on a stator. Possible advantages of these motors are the high torques to be achieved.
  • the speed at the tool spindle is at least 12 000 min -1 .
  • the speed can be increased up to 20 000 min -1 .
  • the cooling can be passive or active. In passive cooling, the removal of thermal energy by convection takes place. With active cooling, the thermal energy of the component to be cooled is removed by means of a cooling system.
  • the cooling system is a fan 46.
  • the fan 46 is integrated in the first housing part 14. It is particularly advantageous if the fan 46 is integrated between the electromotive drive 18 and a receptacle for a machining tool 48.
  • other cooling systems such as Peltier elements, closed cooling circuits or the like are used.
  • the weight of the hand tool 10 is between 0.5 and 1.0 kg.
  • the weight of the power tool 10 is between 0.6 and 0.7 kg.
  • the weight includes a weight of the rechargeable battery 26 and a weight of the machining tool 48.
  • the machining tool 48 of the power tool 10 is for example a grinding, cutting or grinding disc.
  • the machining tool 48 has a diameter d which is between 60 and 100 mm, but especially between 70 and 90 mm.
  • the diameter d of the Machining tool between 75 and 80 mm.
  • Another measure of the compactness of the processing tool and the performance of the electric motor drive 18 is a ratio of the diameter d of the machining tool 48 18 to the diameter d 1 of the electromotive drive, in the preferred embodiment, the ratio of the diameter d of the machining tool 48 to the diameter d 1 of the electromotive drive 18 between 1.5 and 2.6, but especially between 1.8 and 2.4.
  • the ratio of the diameter d of the machining tool 48 to the diameter d 1 of the electromotive drive 18 is preferably between 1.9 and 2.1.
  • a cutting depth of the machining tool 48 is reached, which is between 20 and 25 mm, but preferably between 15 and 20 mm.
  • a protective hood 49 axially covers a circumferential region of the machining tool 48 in the radial direction and a radially extending end region 50 of the portable power tool 10.
  • the hand tool 10 is designed as a battery-operated hand tool 10. As in FIG. 1 it can be seen on a rear side 52, the rechargeable battery 26 is connected.
  • the battery voltage is in a range between 3.6 and 36 V, especially between 7.2 and 14.4 V, but is preferably 10.8V.
  • the values of Battery voltage does not take into account possible battery voltage fluctuations.
  • the rechargeable battery 26 consists in particular of lithium ion battery cells.
  • the rechargeable battery 26 includes one or more rows of battery cells, which in turn are connected in parallel with each other.
  • Each individual cell has a length of about 65 mm and a diameter of about 18 mm. But it is also conceivable that a cell has a length of 65 to 70 mm and a diameter of 14 mm to about 20 mm.
  • Lithium ion batteries are characterized by a high energy density and thermal stability even at high loads, which means high performance. Another big advantage is the low self-discharge, which also means that the batteries are ready for use even with longer service lives. From these advantages, the advantages of the application according to the invention, in particular that the battery-powered router 10 on the one hand small and compact can be on the one hand and on the other hand brings high performance results.
  • the rechargeable battery 26 consists of lithium-air cells, lithium-sulfur cells, lithium polymer cells or the like. Furthermore, the rechargeable battery 26 may be realized in a different geometric embodiment than shown, such as a square design.
  • a battery voltage indicator 54 is integrated in the second housing half shell 15.
  • the battery voltage indicator 54 is provided to optically indicate a level of the battery voltage. This can be done with the help of colored LED, flashing LED, digital display elements, LCD and the like.
  • a sensor device may be arranged in the second housing part 16, which may include a damaged and / or incorrectly mounted machining tool and / or jamming of the machining tool and / or the bursting of the machining tool 48 during operation of the power tool 10 detected.
  • the blocking device can be designed as a slide, pin or lever.
  • the spindle lock can be positive and / or non-positive. It is conceivable that 30 elements, such as locking or friction plates are applied to the output shaft.
  • the blocking device can be designed as a separate component. However, it is also conceivable that the blocking device is integrated in an existing component or combined with this. Such a component may be a switching element, an actuating element or the like.
  • the spindle lock can be done automatically. But it is also conceivable that the spindle lock is to be operated manually.
  • the handheld power tool 10 can be operated both in a power-saving mode and in a boost mode.
  • a lighting device 70 is arranged.
  • the lighting device 70 can also be arranged on the second housing part 16.
  • the illumination device 70 can illuminate a working field, but also project optical information onto a workpiece and / or an environment.
  • the lighting device 70 may have both a single LED, as well as a plurality of LEDs.
  • the LEDs can be provided in various designs and sizes.
  • the illumination device 70 can also be designed as a punctiform light source. But it is also conceivable that the lighting device 70 is designed as a projection device.
  • the lighting device 70 may have lighting elements which may be arranged in different shapes on the first housing part 14 and / or on the second housing part 16.
EP17195361.5A 2013-08-09 2014-06-23 Machine-outil portative à entraînement électromotorique en tant qu'entraînement direct Active EP3296065B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL17195361T PL3296065T3 (pl) 2013-08-09 2014-06-23 Obrabiarka ręczna o napędzie silnikiem elektrycznym jako napędzie bezpośrednim
PL20159673T PL3689553T3 (pl) 2013-08-09 2014-06-23 Obrabiarka ręczna o napędzie silnikiem elektrycznym
EP21189051.2A EP3936284A1 (fr) 2013-08-09 2014-06-23 Machine-outil portative dotée d'un entraînement électromoteur en tant qu'entraînement direct
EP20159673.1A EP3689553B1 (fr) 2013-08-09 2014-06-23 Machine-outil portative à entraînement électromotorique

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102013215821.1A DE102013215821A1 (de) 2013-08-09 2013-08-09 Handwerkzeugmaschine mit einem elektromotorischen Antrieb als Direktantrieb
EP14734767.8A EP3030383B1 (fr) 2013-08-09 2014-06-23 Meuleuse d'angle à entraînement direct par moteur électrique
PCT/EP2014/063099 WO2015018557A1 (fr) 2013-08-09 2014-06-23 Machine-outil portative à entraînement direct par moteur électrique

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP14734767.8A Division EP3030383B1 (fr) 2013-08-09 2014-06-23 Meuleuse d'angle à entraînement direct par moteur électrique
EP14734767.8A Division-Into EP3030383B1 (fr) 2013-08-09 2014-06-23 Meuleuse d'angle à entraînement direct par moteur électrique

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP21189051.2A Division EP3936284A1 (fr) 2013-08-09 2014-06-23 Machine-outil portative dotée d'un entraînement électromoteur en tant qu'entraînement direct
EP20159673.1A Division EP3689553B1 (fr) 2013-08-09 2014-06-23 Machine-outil portative à entraînement électromotorique

Publications (2)

Publication Number Publication Date
EP3296065A1 true EP3296065A1 (fr) 2018-03-21
EP3296065B1 EP3296065B1 (fr) 2020-03-25

Family

ID=51062789

Family Applications (4)

Application Number Title Priority Date Filing Date
EP14734767.8A Active EP3030383B1 (fr) 2013-08-09 2014-06-23 Meuleuse d'angle à entraînement direct par moteur électrique
EP17195361.5A Active EP3296065B1 (fr) 2013-08-09 2014-06-23 Machine-outil portative à entraînement électromotorique en tant qu'entraînement direct
EP20159673.1A Active EP3689553B1 (fr) 2013-08-09 2014-06-23 Machine-outil portative à entraînement électromotorique
EP21189051.2A Pending EP3936284A1 (fr) 2013-08-09 2014-06-23 Machine-outil portative dotée d'un entraînement électromoteur en tant qu'entraînement direct

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP14734767.8A Active EP3030383B1 (fr) 2013-08-09 2014-06-23 Meuleuse d'angle à entraînement direct par moteur électrique

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP20159673.1A Active EP3689553B1 (fr) 2013-08-09 2014-06-23 Machine-outil portative à entraînement électromotorique
EP21189051.2A Pending EP3936284A1 (fr) 2013-08-09 2014-06-23 Machine-outil portative dotée d'un entraînement électromoteur en tant qu'entraînement direct

Country Status (7)

Country Link
US (3) US10730175B2 (fr)
EP (4) EP3030383B1 (fr)
CN (2) CN105451947A (fr)
DE (1) DE102013215821A1 (fr)
ES (3) ES2792039T3 (fr)
PL (3) PL3689553T3 (fr)
WO (1) WO2015018557A1 (fr)

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US20200246959A1 (en) 2020-08-06
ES2792039T3 (es) 2020-11-06
WO2015018557A1 (fr) 2015-02-12
ES2899436T3 (es) 2022-03-11
EP3296065B1 (fr) 2020-03-25
CN105451947A (zh) 2016-03-30
EP3689553B1 (fr) 2021-09-01
EP3689553A1 (fr) 2020-08-05
US10730175B2 (en) 2020-08-04
EP3936284A1 (fr) 2022-01-12
PL3689553T3 (pl) 2021-12-13
ES2760025T3 (es) 2020-05-12
US20160199958A1 (en) 2016-07-14
PL3030383T3 (pl) 2020-03-31
CN114211367A (zh) 2022-03-22
US20230067184A1 (en) 2023-03-02
PL3296065T3 (pl) 2020-09-21
US11518019B2 (en) 2022-12-06
US11938611B2 (en) 2024-03-26
EP3030383B1 (fr) 2019-09-04
DE102013215821A1 (de) 2015-02-12
EP3030383A1 (fr) 2016-06-15

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